From 822e8620d40597a3388f75fc098712903400128a Mon Sep 17 00:00:00 2001 From: Síle Ekaterin Liszka Date: Sat, 25 Mar 2023 17:34:30 +0000 Subject: user/lua-socket: upgrade to 3.1.0 --- ...et-on-first-sendto-if-family-agnostic-udp.patch | 49 - user/lua-socket/APKBUILD | 35 +- user/lua-socket/git.patch | 6609 -------------------- user/lua-socket/lua-cflags.patch | 22 - 4 files changed, 15 insertions(+), 6700 deletions(-) delete mode 100644 user/lua-socket/0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch delete mode 100644 user/lua-socket/git.patch delete mode 100644 user/lua-socket/lua-cflags.patch (limited to 'user/lua-socket') diff --git a/user/lua-socket/0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch b/user/lua-socket/0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch deleted file mode 100644 index 61bae6fbf..000000000 --- a/user/lua-socket/0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch +++ /dev/null @@ -1,49 +0,0 @@ -From 3041a808c3797e3c87272d71666e7b2f7c7a9f46 Mon Sep 17 00:00:00 2001 -From: Natanael Copa -Date: Wed, 25 Jan 2017 12:43:29 +0100 -Subject: [PATCH] Create socket on first sendto if family agnostic udp() was - used - -Create socket and set family on first sendto() if udp() was created -without address family. - -Signed-off-by: Natanael Copa ---- - src/udp.c | 21 +++++++++++++++++++++ - 1 file changed, 21 insertions(+) - -diff --git a/src/udp.c b/src/udp.c -index ec97252..605c195 100644 ---- a/src/udp.c -+++ b/src/udp.c -@@ -189,6 +189,27 @@ static int meth_sendto(lua_State *L) { - lua_pushstring(L, gai_strerror(err)); - return 2; - } -+ -+ /* create socket if on first sendto if AF_UNSPEC was set */ -+ if (udp->family == AF_UNSPEC && udp->sock == SOCKET_INVALID) { -+ struct addrinfo *ap; -+ const char *errstr = NULL; -+ for (ap = ai; ap != NULL; ap = ap->ai_next) { -+ errstr = inet_trycreate(&udp->sock, ap->ai_family, SOCK_DGRAM, 0); -+ if (errstr == NULL) { -+ socket_setnonblocking(&udp->sock); -+ udp->family = ap->ai_family; -+ break; -+ } -+ } -+ if (errstr != NULL) { -+ lua_pushnil(L); -+ lua_pushstring(L, errstr); -+ freeaddrinfo(ai); -+ return 2; -+ } -+ } -+ - timeout_markstart(tm); - err = socket_sendto(&udp->sock, data, count, &sent, ai->ai_addr, - (socklen_t) ai->ai_addrlen, tm); --- -2.11.0 - diff --git a/user/lua-socket/APKBUILD b/user/lua-socket/APKBUILD index e2235310d..a9c0f7af0 100644 --- a/user/lua-socket/APKBUILD +++ b/user/lua-socket/APKBUILD @@ -1,38 +1,33 @@ # Contributor: Mika Havela # Maintainer: Síle Ekaterin Liszka pkgname=lua-socket -_name=luasocket -pkgver=3.0_rc1_git20160306 +_pkgname=luasocket +pkgver=3.1.0 pkgrel=0 -_ver=${pkgver%_git*} -_ver=$(printf '%s' "$_ver" | sed 's/_rc/-rc/') +_luaver=5.3 +_socketver=3.0.0 +_mimever=1.0.3 pkgdesc="Networking library for Lua" -url="http://luaforge.net/projects/luasocket/" +url="https://lunarmodules.github.io/luasocket/" arch="all" license="MIT" -depends="lua5.3" -makedepends="lua5.3-dev" -source="luasocket-$_ver.tar.gz::https://github.com/diegonehab/luasocket/archive/v$_ver.tar.gz - git.patch - lua-cflags.patch - 0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch" -builddir="$srcdir/$_name-$_ver" +depends="lua$_luaver" +makedepends="lua$_luaver-dev" +source="$pkgname-$pkgver.tar.gz::https://github.com/lunarmodules/luasocket/archive/refs/tags/v$pkgver.tar.gz" +builddir="$srcdir/$_pkgname-$pkgver" build() { - make LUAV="" + make linux prefix=/usr LUAV="$_luaver" } check() { - mkdir -p src/socket && cp src/socket-$_ver.so src/socket/core.so - mkdir -p src/mime && cp src/mime-1.0.3.so src/mime/core.so + cp src/socket-$_socketver.so src/socket.so + cp src/mime-$_mimever.so src/mime.so LUA_CPATH=./src/?.so LUA_PATH="./src/?.lua;;" lua test/hello.lua } package() { - make prefix=/usr DESTDIR="$pkgdir" LUAV="5.3" install-unix + make prefix=/usr DESTDIR="$pkgdir" LUAV="$_luaver" install-unix } -sha512sums="f6efce259aaacaa11472911471f8a13b118fe009b8953a82c6aa18b9ec829cd1293180904e56935cb130d36d267e3f27c91db2d78e03f7488f3e100571ed0540 luasocket-3.0-rc1.tar.gz -45c80e488fedc879f0217bc8a654d80da003039f5d1ff21b0dea0eb769151787dbe793e44a3dfd72cb07ff2697eceaf4fc7b55b4634cd170fa71281f19f025a5 git.patch -61c15238a2f116b7239fdbdb8f617c82dbbecd0117c6e8389b12015bf07f3978299a8e8995e93a45a23530c747662b08d161073cdb6a8e07c4f449e45856e8cb lua-cflags.patch -c45a12e17771a1b3b71154b5415421f524cd10b7969b4649a5f37b652cdc826721e117edb8fe64758d3520e59946e2f755b814f72cbb39ff42bf59bbcf9a64e9 0001-Create-socket-on-first-sendto-if-family-agnostic-udp.patch" +sha512sums="1e9e98484740ec6538fe3d2b0dab74d31f052956ecf9ee3b60e229f2d0b13fcc6d4aaf74cd2a3e2ee330333dabb316fe6a43c60baaea26f0cc01069b6aa4519b lua-socket-3.1.0.tar.gz" diff --git a/user/lua-socket/git.patch b/user/lua-socket/git.patch deleted file mode 100644 index d665fc232..000000000 --- a/user/lua-socket/git.patch +++ /dev/null @@ -1,6609 +0,0 @@ -diff --git a/doc/http.html b/doc/http.html -index cd41c0d..3b7a8b1 100644 ---- a/doc/http.html -+++ b/doc/http.html -@@ -112,12 +112,15 @@ the HTTP module: -

- -
    --
  • PORT: default port used for connections; --
  • PROXY: default proxy used for connections; -+
  • PROXY: default proxy used for connections; -
  • TIMEOUT: sets the timeout for all I/O operations; -
  • USERAGENT: default user agent reported to server. -
- -+

-+Note: These constants are global. Changing them will also -+change the behavior other code that might be using LuaSocket. -+

- - - -diff --git a/doc/mime.html b/doc/mime.html -index ae136fd..8cb3507 100644 ---- a/doc/mime.html -+++ b/doc/mime.html -@@ -72,34 +72,6 @@ local mime = require("mime") - -

High-level filters

- -- -- --

--mime.normalize([marker]) --

-- --

--Converts most common end-of-line markers to a specific given marker. --

-- --

--Marker is the new marker. It defaults to CRLF, the canonic --end-of-line marker defined by the MIME standard. --

-- --

--The function returns a filter that performs the conversion. --

-- --

--Note: There is no perfect solution to this problem. Different end-of-line --markers are an evil that will probably plague developers forever. --This function, however, will work perfectly for text created with any of --the most common end-of-line markers, i.e. the Mac OS (CR), the Unix (LF), --or the DOS (CRLF) conventions. Even if the data has mixed end-of-line --markers, the function will still work well, although it doesn't --guarantee that the number of empty lines will be correct. --

- - - -@@ -159,6 +131,35 @@ base64 = ltn12.filter.chain( - ) - - -+ -+ -+

-+mime.normalize([marker]) -+

-+ -+

-+Converts most common end-of-line markers to a specific given marker. -+

-+ -+

-+Marker is the new marker. It defaults to CRLF, the canonic -+end-of-line marker defined by the MIME standard. -+

-+ -+

-+The function returns a filter that performs the conversion. -+

-+ -+

-+Note: There is no perfect solution to this problem. Different end-of-line -+markers are an evil that will probably plague developers forever. -+This function, however, will work perfectly for text created with any of -+the most common end-of-line markers, i.e. the Mac OS (CR), the Unix (LF), -+or the DOS (CRLF) conventions. Even if the data has mixed end-of-line -+markers, the function will still work well, although it doesn't -+guarantee that the number of empty lines will be correct. -+

-+ - - -

-@@ -466,7 +467,7 @@ marker. -

- - Last modified by Diego Nehab on
--Thu Apr 20 00:25:44 EDT 2006 -+Fri Mar 4 15:19:17 BRT 2016 - -

- -diff --git a/doc/reference.css b/doc/reference.css -index b1dd25d..04e38cf 100644 ---- a/doc/reference.css -+++ b/doc/reference.css -@@ -2,6 +2,7 @@ body { - margin-left: 1em; - margin-right: 1em; - font-family: "Verdana", sans-serif; -+ background: #ffffff; - } - - tt { -diff --git a/doc/reference.html b/doc/reference.html -index e9bb5eb..287dc19 100644 ---- a/doc/reference.html -+++ b/doc/reference.html -@@ -147,6 +147,7 @@ Support, Manual"> - connect, - connect4, - connect6, -+_DATAGRAMSIZE, - _DEBUG, - dns, - gettime, -@@ -158,11 +159,14 @@ Support, Manual"> - skip, - sleep, - _SETSIZE, -+_SOCKETINVALID, - source, - tcp, -+tcp4, - tcp6, - try, - udp, -+udp4, - udp6, - _VERSION. - -@@ -183,6 +187,7 @@ Support, Manual"> - getpeername, - getsockname, - getstats, -+gettimeout, - listen, - receive, - send, -@@ -203,6 +208,7 @@ Support, Manual"> - getoption, - getpeername, - getsockname, -+gettimeout, - receive, - receivefrom, - send, -diff --git a/doc/smtp.html b/doc/smtp.html -index bbbff80..600ec37 100644 ---- a/doc/smtp.html -+++ b/doc/smtp.html -@@ -114,6 +114,124 @@ the SMTP module: -
  • ZONE: default time zone. - - -+ -+ -+

    -+smtp.message(mesgt) -+

    -+ -+

    -+Returns a simple -+LTN12 source that sends an SMTP message body, possibly multipart (arbitrarily deep). -+

    -+ -+

    -+The only parameter of the function is a table describing the message. -+Mesgt has the following form (notice the recursive structure): -+

    -+ -+
    -+ -+ -+
    -+mesgt = {
    -+  headers = header-table,
    -+  body = LTN12 source or string or -+multipart-mesgt
    -+}
    -+ 
    -+multipart-mesgt = {
    -+  [preamble = string,]
    -+  [1] = mesgt,
    -+  [2] = mesgt,
    -+  ...
    -+  [n] = mesgt,
    -+  [epilogue = string,]
    -+}
    -+
    -+
    -+ -+

    -+For a simple message, all that is needed is a set of headers -+and the body. The message body can be given as a string -+or as a simple -+LTN12 -+source. For multipart messages, the body is a table that -+recursively defines each part as an independent message, plus an optional -+preamble and epilogue. -+

    -+ -+

    -+The function returns a simple -+LTN12 -+source that produces the -+message contents as defined by mesgt, chunk by chunk. -+Hopefully, the following -+example will make things clear. When in doubt, refer to the appropriate RFC -+as listed in the introduction.

    -+ -+
    -+-- load the smtp support and its friends
-+local smtp = require("socket.smtp")
-+local mime = require("mime")
-+local ltn12 = require("ltn12")
-+
-+-- creates a source to send a message with two parts. The first part is 
-+-- plain text, the second part is a PNG image, encoded as base64.
-+source = smtp.message{
-+  headers = {
-+     -- Remember that headers are *ignored* by smtp.send. 
-+     from = "Sicrano de Oliveira <sicrano@example.com>",
-+     to = "Fulano da Silva <fulano@example.com>",
-+     subject = "Here is a message with attachments"
-+  },
-+  body = {
-+    preamble = "If your client doesn't understand attachments, \r\n" ..
-+               "it will still display the preamble and the epilogue.\r\n" ..
-+               "Preamble will probably appear even in a MIME enabled client.",
-+    -- first part: no headers means plain text, us-ascii.
-+    -- The mime.eol low-level filter normalizes end-of-line markers.
-+    [1] = { 
-+      body = mime.eol(0, [[
-+        Lines in a message body should always end with CRLF. 
-+        The smtp module will *NOT* perform translation. However, the 
-+        send function *DOES* perform SMTP stuffing, whereas the message
-+        function does *NOT*.
-+      ]])
-+    },
-+    -- second part: headers describe content to be a png image, 
-+    -- sent under the base64 transfer content encoding.
-+    -- notice that nothing happens until the message is actually sent. 
-+    -- small chunks are loaded into memory right before transmission and 
-+    -- translation happens on the fly.
-+    [2] = { 
-+      headers = {
-+        ["content-type"] = 'image/png; name="image.png"',
-+        ["content-disposition"] = 'attachment; filename="image.png"',
-+        ["content-description"] = 'a beautiful image',
-+        ["content-transfer-encoding"] = "BASE64"
-+      },
-+      body = ltn12.source.chain(
-+        ltn12.source.file(io.open("image.png", "rb")),
-+        ltn12.filter.chain(
-+          mime.encode("base64"),
-+          mime.wrap()
-+        )
-+      )
-+    },
-+    epilogue = "This might also show up, but after the attachments"
-+  }
-+}
-+
-+-- finally send it
-+r, e = smtp.send{
-+    from = "<sicrano@example.com>",
-+    rcpt = "<fulano@example.com>",
-+    source = source,
-+}
-+
    -+ -+ - - -

    -@@ -275,123 +393,6 @@ r, e = smtp.send{ - } - - -- -- --

    --smtp.message(mesgt) --

    -- --

    --Returns a simple --LTN12 source that sends an SMTP message body, possibly multipart (arbitrarily deep). --

    -- --

    --The only parameter of the function is a table describing the message. --Mesgt has the following form (notice the recursive structure): --

    -- --
    -- -- --
    --mesgt = {
    --  headers = header-table,
    --  body = LTN12 source or string or --multipart-mesgt
    --}
    -- 
    --multipart-mesgt = {
    --  [preamble = string,]
    --  [1] = mesgt,
    --  [2] = mesgt,
    --  ...
    --  [n] = mesgt,
    --  [epilogue = string,]
    --}
    --
    --
    -- --

    --For a simple message, all that is needed is a set of headers --and the body. The message body can be given as a string --or as a simple --LTN12 --source. For multipart messages, the body is a table that --recursively defines each part as an independent message, plus an optional --preamble and epilogue. --

    -- --

    --The function returns a simple --LTN12 --source that produces the --message contents as defined by mesgt, chunk by chunk. --Hopefully, the following --example will make things clear. When in doubt, refer to the appropriate RFC --as listed in the introduction.

    -- --
    ---- load the smtp support and its friends
--local smtp = require("socket.smtp")
--local mime = require("mime")
--local ltn12 = require("ltn12")
--
---- creates a source to send a message with two parts. The first part is 
---- plain text, the second part is a PNG image, encoded as base64.
--source = smtp.message{
--  headers = {
--     -- Remember that headers are *ignored* by smtp.send. 
--     from = "Sicrano de Oliveira <sicrano@example.com>",
--     to = "Fulano da Silva <fulano@example.com>",
--     subject = "Here is a message with attachments"
--  },
--  body = {
--    preamble = "If your client doesn't understand attachments, \r\n" ..
--               "it will still display the preamble and the epilogue.\r\n" ..
--               "Preamble will probably appear even in a MIME enabled client.",
--    -- first part: no headers means plain text, us-ascii.
--    -- The mime.eol low-level filter normalizes end-of-line markers.
--    [1] = { 
--      body = mime.eol(0, [[
--        Lines in a message body should always end with CRLF. 
--        The smtp module will *NOT* perform translation. However, the 
--        send function *DOES* perform SMTP stuffing, whereas the message
--        function does *NOT*.
--      ]])
--    },
--    -- second part: headers describe content to be a png image, 
--    -- sent under the base64 transfer content encoding.
--    -- notice that nothing happens until the message is actually sent. 
--    -- small chunks are loaded into memory right before transmission and 
--    -- translation happens on the fly.
--    [2] = { 
--      headers = {
--        ["content-type"] = 'image/png; name="image.png"',
--        ["content-disposition"] = 'attachment; filename="image.png"',
--        ["content-description"] = 'a beautiful image',
--        ["content-transfer-encoding"] = "BASE64"
--      },
--      body = ltn12.source.chain(
--        ltn12.source.file(io.open("image.png", "rb")),
--        ltn12.filter.chain(
--          mime.encode("base64"),
--          mime.wrap()
--        )
--      )
--    },
--    epilogue = "This might also show up, but after the attachments"
--  }
--}
--
---- finally send it
--r, e = smtp.send{
--    from = "<sicrano@example.com>",
--    rcpt = "<fulano@example.com>",
--    source = source,
--}
--
    -- - - -
    -diff --git a/doc/socket.html b/doc/socket.html -index b9303cb..35f8391 100644 ---- a/doc/socket.html -+++ b/doc/socket.html -@@ -51,6 +51,30 @@ To obtain the socket namespace, run: - local socket = require("socket") - - -+ -+ -+

    -+socket.headers.canonic

    -+ -+

    The socket.headers.canonic table -+is used by the HTTP and SMTP modules to translate from -+lowercase field names back into their canonic -+capitalization. When a lowercase field name exists as a key -+in this table, the associated value is substituted in -+whenever the field name is sent out. -+

    -+ -+

    -+You can obtain the headers namespace if case run-time -+modifications are required by running: -+

    -+ -+
    -+-- loads the headers module 
-+local headers = require("headers")
-+
    -+ -+ - - -

    -@@ -90,7 +114,7 @@ of connect are defined as simple helper functions that restrict the - - - --

    -+

    - socket._DEBUG -

    - -@@ -99,6 +123,19 @@ This constant is set to true if the library was compiled - with debug support. -

    - -+ -+ -+

    -+socket._DATAGRAMSIZE -+

    -+ -+

    -+Default datagram size used by calls to -+receive and -+receivefrom. -+(Unless changed in compile time, the value is 8192.) -+

    -+ - - -

    -@@ -106,8 +143,7 @@ socket.gettime() -

    - -

    --Returns the time in seconds, relative to the origin of the --universe. You should subtract the values returned by this function -+Returns the UNIX time in seconds. You should subtract the values returned by this function - to get meaningful values. -

    - -@@ -117,29 +153,6 @@ t = socket.gettime() - print(socket.gettime() - t .. " seconds elapsed") - - -- -- --

    --socket.headers.canonic

    -- --

    The socket.headers.canonic table --is used by the HTTP and SMTP modules to translate from --lowercase field names back into their canonic --capitalization. When a lowercase field name exists as a key --in this table, the associated value is substituted in --whenever the field name is sent out. --

    -- --

    --You can obtain the headers namespace if case run-time --modifications are required by running: --

    -- --
    ---- loads the headers module 
--local headers = require("headers")
--
    -- - - -

    -@@ -155,8 +168,7 @@ is raised. - -

    - Finalizer is a function that will be called before --try throws the exception. It will be called --in protected mode. -+try throws the exception. -

    - -

    -@@ -204,15 +216,9 @@ to throw exceptions. -

    - -

    --Returns an equivalent function that instead of throwing exceptions, --returns nil followed by an error message. --

    -- --

    --Note: Beware that if your function performs some illegal operation that --raises an error, the protected function will catch the error and return it --as a string. This is because the try function --uses errors as the mechanism to throw exceptions. -+Returns an equivalent function that instead of throwing exceptions in case of -+a failed try call, returns nil -+followed by an error message. -

    - - -@@ -238,7 +244,9 @@ non-numeric indices) in the arrays will be silently ignored. - -

    The function returns a list with the sockets ready for - reading, a list with the sockets ready for writing and an error message. --The error message is "timeout" if a timeout condition was met and -+The error message is "timeout" if a timeout -+condition was met, "select failed" if the call -+to select failed, and - nil otherwise. The returned tables are - doubly keyed both by integers and also by the sockets - themselves, to simplify the test if a specific socket has -@@ -246,7 +254,7 @@ changed status. -

    - -

    --Note: : select can monitor a limited number -+Note: select can monitor a limited number - of sockets, as defined by the constant socket._SETSIZE. This - number may be as high as 1024 or as low as 64 by default, - depending on the system. It is usually possible to change this -@@ -276,6 +284,18 @@ it to select, it will be ignored. - Using select with non-socket objects: Any object that implements getfd and dirty can be used with select, allowing objects from other libraries to be used within a socket.select driven loop. -

    - -+ -+ -+

    -+socket._SETSIZE -+

    -+ -+

    -+The maximum number of sockets that the select function can handle. -+

    -+ -+ - - -

    -@@ -383,15 +403,14 @@ side closes the connection. - The function returns a source with the appropriate behavior. -

    - -- -+ - --

    --socket._SETSIZE -+

    -+socket._SOCKETINVALID -

    - -

    --The maximum number of sockets that the select function can handle. -+The OS value for an invalid socket. -

    - - -@@ -401,9 +420,9 @@ socket.try(ret1 [, ret2 ... retN]) - -

    --Throws an exception in case of error. The exception can only be caught --by the protect function. It does not explode --into an error message. -+Throws an exception in case ret1 is falsy, using -+ret2 as the error message. The exception is supposed to be caught -+by a protected function only. -

    - -

    -@@ -414,7 +433,10 @@ nested with try. - -

    - The function returns ret1 to retN if --ret1 is not nil. Otherwise, it calls error passing ret2. -+ret1 is not nil or false. -+Otherwise, it calls error passing ret2 wrapped -+in a table with metatable used by protect to -+distinguish exceptions from runtime errors. -

    - - 
    -diff --git a/doc/tcp.html b/doc/tcp.html
-index 4226d78..c6c6eb2 100644
---- a/doc/tcp.html
-+++ b/doc/tcp.html
-@@ -1,10 +1,10 @@
--
- 
- 
- 
- 
-- 
-+
- LuaSocket: TCP/IP support
- 
- 
-@@ -28,7 +28,7 @@
- download ·
- installation ·
- introduction ·
--reference 
-+reference
- 
    
- 
- 
    
-@@ -36,56 +36,11 @@
- 
- 
- 
--
    TCP
     
--
--
--
--
     
--socket.tcp()
--
    
--
--
     
--Creates and returns an IPv4 TCP master object. A master object can
--be transformed into a server object with the method 
--listen (after a call to bind) or into a client object with 
--the method connect. The only other 
--method supported by a master object is the 
--close method.
    
--
--
    
--In case of success, a new master object is returned. In case of error,
--nil is returned, followed by an error message.
--
    
--
--
--
--
     
--socket.tcp6()
--
    
--
--
     
--Creates and returns an IPv6 TCP master object. A master object can
--be transformed into a server object with the method 
--listen (after a call to bind) or into a client object with 
--the method connect. The only other 
--method supported by a master object is the 
--close method.
    
--
--
    
--In case of success, a new master object is returned. In case of error,
--nil is returned, followed by an error message.
--
    
--
--
    
--Note: The TCP object returned will have the option
--"ipv6-v6only" set to true.
--
    
-+
    TCP
    
- 
- 
- 
--
     
-+
    
- server:accept()
- 
    
- 
-@@ -95,9 +50,9 @@ object and returns a client object representing that connection.
- 
    
- 
- 
    
--If a connection is successfully initiated, a client object is returned.  
-+If a connection is successfully initiated, a client object is returned.
- If a  timeout condition  is  met,  the method  returns nil
--followed by the error string 'timeout'. Other errors are 
-+followed by the error string 'timeout'. Other errors are
- reported by nil followed by a message describing the error.
- 
    
- 
-@@ -107,28 +62,28 @@ with   a  server   object   in
- the recvt  parameter  before  a   call  to  accept does
- not guarantee  accept will  return immediately.  Use the settimeout method or accept
--might block until another client shows up. 
-+might block until another client shows up.
- 
    
- 
- 
- 
--
     
-+
    
- master:bind(address, port)
- 
    
- 
- 
    
- Binds a master object to address and port on the
--local host. 
-+local host.
- 
- 
    
--Address can be an IP address or a host name. 
--Port must be an integer number in the range [0..64K). 
-+Address can be an IP address or a host name.
-+Port must be an integer number in the range [0..64K).
- If address
- is '*', the system binds to all local interfaces
- using the INADDR_ANY constant or
--IN6ADDR_ANY_INIT, according to the family. 
-+IN6ADDR_ANY_INIT, according to the family.
- If port is 0, the system automatically
--chooses an ephemeral port.  
-+chooses an ephemeral port.
- 
    
- 
- 
    
-@@ -137,13 +92,13 @@ method returns nil followed by an error message.
- 
    
- 
- 
    
--Note: The function socket.bind 
-+Note: The function socket.bind
- is available and is a shortcut for the creation of server sockets.
- 
    
- 
- 
- 
--
     
-+
    
- master:close()
    
- client:close()
    
- server:close()
-@@ -154,14 +109,14 @@ Closes  a TCP object. The internal socket used by the object is closed
- and the local  address   to  which the object was
- bound is made  available to other  applications. No further  operations
- (except  for  further calls  to the close method)  are allowed on
--a closed socket. 
-+a closed socket.
- 
    
- 
- 
    
- Note:  It is  important to  close all  used  sockets once  they are  not
- needed,  since, in  many systems,  each socket  uses a  file descriptor,
- which are limited system resources. Garbage-collected objects are
--automatically closed before destruction, though. 
-+automatically closed before destruction, though.
- 
    
- 
- 
-@@ -172,19 +127,19 @@ master:connect(address, port)
- 
- 
    
- Attempts to connect a master object to a remote host, transforming it into a
--client object. 
--Client objects support methods 
-+client object.
-+Client objects support methods
- send,
--receive, 
--getsockname, 
-+receive,
-+getsockname,
- getpeername,
--settimeout, 
-+settimeout,
- and close.
- 
    
- 
- 
    
--Address can be an IP address or a host name. 
--Port must be an integer number in the range [1..64K). 
-+Address can be an IP address or a host name.
-+Port must be an integer number in the range [1..64K).
- 
    
- 
- 
    
-@@ -193,14 +148,14 @@ describing the error. In case of success, the method returns 1.
- 
    
- 
- 
    
--Note: The function socket.connect 
-+Note: The function socket.connect
- is available and is a shortcut for the creation of client sockets.
- 
    
- 
- 
    
--Note: Starting with LuaSocket 2.0, 
-+Note: Starting with LuaSocket 2.0,
- the settimeout
--method affects the behavior of connect, causing it to return 
-+method affects the behavior of connect, causing it to return
- with an error in case of a timeout. If that happens, you can still call socket.select with the socket in the
- sendt table. The socket will be writable when the connection is
-@@ -209,13 +164,88 @@ established.
- 
- 
    
- Note: Starting with LuaSocket 3.0, the host name resolution
--depends on whether the socket was created by socket.tcp or socket.tcp6. Addresses from
--the appropriate family are tried in succession until the
--first success or until the last failure.
-+depends on whether the socket was created by
-+socket.tcp,
-+socket.tcp4 or
-+socket.tcp6. Addresses from
-+the appropriate family (or both) are tried in the order
-+returned by the resolver until the
-+first success or until the last failure. If the timeout was
-+set to zero, only the first address is tried.
-+
    
-+
-+
-+
-+
    
-+master:dirty()
    
-+client:dirty()
    
-+server:dirty()
-+
    
-+
-+
    
-+Check the read buffer status.
-+
    
-+
-+
    
-+Returns true if there is any data in the read buffer, false otherwise.
-+
    
-+
-+
    
-+Note: This is an internal method, use at your own risk.
-+
    
-+
-+
-+
-+
-+
    
-+master:getfd()
    
-+client:getfd()
    
-+server:getfd()
-+
    
-+
-+
    
-+Returns the underling socket descriptor or handle associated to the object.
-+
    
-+
-+
    
-+The descriptor or handle. In case the object has been closed, the return will be -1.
-+
    
-+
-+
    
-+Note: This is an internal method. Unlikely to be
-+portable. Use at your own risk. 
-+
    
-+
-+
-+
-+
-+
    
-+client:getoption(option)
    
-+server:getoption(option)
-+
    
-+
-+
    
-+Gets options for the TCP object.
-+See setoption for description of the
-+option names and values.
-+
    
-+
-+
    
-+Option is a string with the option name.
-+
      
-+
-+
    •  'keepalive'
-+
    •  'linger'
-+
    •  'reuseaddr'
-+
    •  'tcp-nodelay'
-+
    
-+
-+
    
-+The method returns the option value in case of success, or
-+nil followed by an error message otherwise.
- 
    
- 
-+
- 
- 
- 
    
-@@ -227,10 +257,10 @@ Returns information about the remote side of a connected client object.
- 
    
- 
- 
    
--Returns a string with the IP address of the peer, the 
--port number that peer is using for the connection, 
--and a string with the family ("inet" or "inet6"). 
--In case of error, the method returns nil. 
-+Returns a string with the IP address of the peer, the
-+port number that peer is using for the connection,
-+and a string with the family ("inet" or "inet6").
-+In case of error, the method returns nil.
- 
    
- 
- 
    
-@@ -246,13 +276,13 @@ server:getsockname()
- 
    
- 
- 
    
--Returns the local address information associated to the object. 
-+Returns the local address information associated to the object.
- 
    
- 
- 
    
--The method returns a string with local IP address, a number with 
--the local port, 
--and a string with the family ("inet" or "inet6"). 
-+The method returns a string with local IP address, a number with
-+the local port,
-+and a string with the family ("inet" or "inet6").
- In case of error, the method returns nil.
- 
    
- 
-@@ -266,32 +296,46 @@ server:getstats()
    
- 
- 
    
- Returns accounting information on the socket, useful for throttling
--of bandwidth. 
-+of bandwidth.
- 
    
- 
- 
    
- The method returns the number of bytes received, the number of bytes sent,
--and the age of the socket object in seconds. 
-+and the age of the socket object in seconds.
- 
    
- 
-+
-+
-+
    
-+master:gettimeout()
    
-+client:gettimeout()
    
-+server:gettimeout()
-+
    
-+
-+
    
-+Returns the current block timeout followed by the curent
-+total timeout.
-+
    
-+
-+
- 
- 
--
     
-+
    
- master:listen(backlog)
- 
    
- 
- 
    
- Specifies the socket is willing to receive connections, transforming the
--object into a server object.  Server objects support the 
--accept,  
--getsockname, 
--setoption, 
--settimeout, 
--and close methods.  
-+object into a server object.  Server objects support the
-+accept,
-+getsockname,
-+setoption,
-+settimeout,
-+and close methods.
- 
    
- 
- 
    
--The parameter backlog specifies the  number  of  client 
-+The parameter backlog specifies the  number  of  client
- connections that can
- be queued waiting for service. If the queue is full and another  client
- attempts connection,  the connection is  refused.
-@@ -310,11 +354,11 @@ client:receive([pattern [, prefix]])
- 
- 
    
- Reads data from a client object, according to the specified read
--pattern.  Patterns follow the Lua file I/O format, and the difference in performance between all patterns is negligible. 
-+pattern.  Patterns follow the Lua file I/O format, and the difference in performance between all patterns is negligible.
- 
    
- 
- 
    
--Pattern can be any of the following: 
-+Pattern can be any of the following:
- 
    
- 
- 
      
-@@ -325,7 +369,7 @@ terminated by a  LF character (ASCII 10), optionally  preceded by a
- CR character (ASCII 13). The CR and LF characters are not included in
- the returned line. In fact, all CR characters are
- ignored by the pattern. This is the default pattern;
--
    •  number:  causes the  method to read  a specified number 
-+
    •  number:  causes the  method to read  a specified number
- of bytes from the socket.
- 
    
- 
-@@ -347,10 +391,10 @@ closed  before  the transmission  was completed  or  the string
- 
    
- Important note: This function was changed severely. It used
- to support multiple patterns (but I have never seen this feature used) and
--now it doesn't anymore.  Partial results used to be returned in the same 
-+now it doesn't anymore.  Partial results used to be returned in the same
- way as successful results. This last feature violated the idea that all
- functions should return nil on error.  Thus it was changed
--too. 
-+too.
- 
    
- 
- 
-@@ -366,7 +410,7 @@ Sends data through client object.
- 
    
- Data is the string to be sent. The optional arguments
- i and j work exactly like the standard
--string.sub Lua function to allow the selection of a 
-+string.sub Lua function to allow the selection of a
- substring to be sent.
- 
    
- 
-@@ -385,10 +429,10 @@ there was  a  timeout  during  the operation.
- 
    
- 
- 
    
--Note: Output is not buffered. For small strings, 
--it is always better to concatenate them in Lua 
--(with the '..' operator) and send the result in one call 
--instead of calling the method several times. 
-+Note: Output is not buffered. For small strings,
-+it is always better to concatenate them in Lua
-+(with the '..' operator) and send the result in one call
-+instead of calling the method several times.
- 
    
- 
- 
-@@ -400,12 +444,12 @@ server:setoption(option [, value])
- 
- 
    
- Sets options for the TCP object. Options are only needed by low-level or
--time-critical applications. You should only modify an option if you 
--are sure you need it. 
-+time-critical applications. You should only modify an option if you
-+are sure you need it.
- 
    
- 
- 
    
--Option is a string with the option name, and value 
-+Option is a string with the option name, and value
- depends on the option being set:
- 
- 
      
-@@ -413,7 +457,7 @@ depends on the option being set:
- 
    •  'keepalive':  Setting this option to true enables
- the periodic transmission of messages on a connected socket. Should the
- connected party fail to respond to these messages, the connection is
--considered broken and processes using the socket are notified; 
-+considered broken and processes using the socket are notified;
- 
- 
    •  'linger': Controls the action taken when unsent data are
- queued on a socket and a close is performed.  The value is a table with a
-@@ -424,13 +468,13 @@ it is able to transmit the data or until 'timeout' has passed. If
- 'on' is false and a close is issued, the system will
- process the close in a manner that allows the process to continue as
- quickly as possible. I do not advise you to set this to anything other than
--zero; 
-+zero;
- 
- 
    •  'reuseaddr': Setting this option indicates that the rules
--used in validating addresses supplied in a call to 
-+used in validating addresses supplied in a call to
- bind should allow reuse of local addresses;
- 
--
    •  'tcp-nodelay': Setting this option to true 
-+
    •  'tcp-nodelay': Setting this option to true
- disables the Nagle's algorithm for the connection;
- 
- 
    •  'ipv6-v6only':
-@@ -447,34 +491,6 @@ followed by an error message otherwise.
- Note: The descriptions above come from the man pages.
- 
      
- 
--
--
--
      
--client:getoption(option)
      
--server:getoption(option)
--
      
--
--
      
--Gets options for the TCP object.
--See setoption for description of the
--option names and values.
--
      
--
--
      
--Option is a string with the option name.
--
        
--
--
      •  'keepalive'
--
      •  'linger'
--
      •  'reuseaddr'
--
      •  'tcp-nodelay'
--
      
--
--
      
--The method returns the option value in case of success, or
--nil followed by an error message otherwise.
--
      
--
- 
- 
- 
      
-@@ -485,7 +501,7 @@ server:setstats(received, sent, age)
      
- 
- 
      
- Resets accounting information on the socket, useful for throttling
--of bandwidth. 
-+of bandwidth.
- 
      
- 
- 
      
-@@ -495,7 +511,7 @@ of bandwidth.
- 
      
- 
- 
      
--The method returns 1 in case of success and nil otherwise. 
-+The method returns 1 in case of success and nil otherwise.
- 
      
- 
- 
-@@ -509,8 +525,8 @@ server:settimeout(value [, mode])
- 
      
- Changes the timeout  values for the object. By default,
- all I/O  operations are  blocking. That  is, any  call to  the methods
--send, 
--receive, and 
-+send,
-+receive, and
- accept
- will  block indefinitely,  until the operation completes.  The
- settimeout  method defines a  limit on the  amount  of   time  the
-@@ -521,7 +537,7 @@ time has elapsed, the affected methods give up and fail with an error code.
- 
      
- The amount of time to wait is specified  as  the
- value parameter, in seconds. There  are two timeout  modes and
--both can be used together for fine tuning: 
-+both can be used together for fine tuning:
- 
      
- 
- 
        
-@@ -532,7 +548,7 @@ default mode;
- 
- 
      •  't':  total timeout. Specifies the  upper limit on
- the amount of  time LuaSocket can block a Lua  script before returning from
--a call.
        •  
-+a call.
- 
      
- 
- 
      
-@@ -562,7 +578,7 @@ client:shutdown(mode)
      
- 
      
- 
- 
      
--Shuts down part of a full-duplex connection. 
-+Shuts down part of a full-duplex connection.
- 
      
- 
- 
      
-@@ -579,66 +595,107 @@ This is the default mode;
- This function returns 1.
- 
      
- 
--
-+
- 
--
      
--master:dirty()
      
--client:dirty()
      
--server:dirty()
-+
      
-+master:setfd(fd)
      
-+client:setfd(fd)
      
-+server:setfd(fd)
- 
      
- 
- 
      
--Check the read buffer status.
-+Sets the underling socket descriptor or handle associated to the object. The current one is simply replaced, not closed, and no other change to the object state is made.
- 
      
- 
- 
      
--Returns true if there is any data in the read buffer, false otherwise.
-+No return value.
- 
      
- 
- 
      
--Note: This is an internal method, any use is unlikely to be portable.
-+Note: This is an internal method. Unlikely to be
-+portable. Use at your own risk. 
- 
      
- 
--
-+
- 
--
      
--master:getfd()
      
--client:getfd()
      
--server:getfd()
-+
      
-+socket.tcp()
- 
      
- 
- 
      
--Returns the underling socket descriptor or handle associated to the object. 
--
      
-+Creates and returns an TCP master object. A master object can
-+be transformed into a server object with the method
-+listen (after a call to bind) or into a client object with
-+the method connect. The only other
-+method supported by a master object is the
-+close method.
      
- 
- 
      
--The descriptor or handle. In case the object has been closed, the return will be -1.
-+In case of success, a new master object is returned. In case of error,
-+nil is returned, followed by an error message.
- 
      
- 
- 
      
--Note: This is an internal method, any use is unlikely to be portable.
-+Note: The choice between IPv4 and IPv6 happens during a call to
-+bind or connect, depending on the address
-+family obtained from the resolver.
- 
      
- 
--
-+
      
-+Note: Before the choice between IPv4 and IPv6 happens,
-+the internal socket object is invalid and therefore setoption will fail.
-+
      
- 
--
      
--master:setfd(fd)
      
--client:setfd(fd)
      
--server:setfd(fd)
-+
-+
-+
      
-+socket.tcp4()
- 
      
- 
- 
      
--Sets the underling socket descriptor or handle associated to the object. The current one is simply replaced, not closed, and no other change to the object state is made.
-+Creates and returns an IPv4 TCP master object. A master object can
-+be transformed into a server object with the method
-+listen (after a call to bind) or into a client object with
-+the method connect. The only other
-+method supported by a master object is the
-+close method.
      
-+
-+
      
-+In case of success, a new master object is returned. In case of error,
-+nil is returned, followed by an error message.
-+
      
-+
-+
-+
-+
      
-+socket.tcp6()
- 
      
- 
-+
      
-+Creates and returns an IPv6 TCP master object. A master object can
-+be transformed into a server object with the method
-+listen (after a call to bind) or into a client object with
-+the method connect. The only other
-+method supported by a master object is the
-+close method.
      
-+
- 
      
--No return value.
-+In case of success, a new master object is returned. In case of error,
-+nil is returned, followed by an error message.
- 
      
- 
- 
      
--Note: This is an internal method, any use is unlikely to be portable.
-+Note: The TCP object returned will have the option
-+"ipv6-v6only" set to true.
- 
      
- 
-+
-+
- 
- 
- 
      
-diff --git a/doc/udp.html b/doc/udp.html
-index e5b0ad0..4618aad 100644
---- a/doc/udp.html
-+++ b/doc/udp.html
-@@ -4,7 +4,7 @@
- 
- 
- 
-- 
-+
- LuaSocket: UDP support
- 
- 
-@@ -28,7 +28,7 @@
- download ·
- installation ·
- introduction ·
--reference 
-+reference
- 
      
- 
- 
      
-@@ -37,74 +37,7 @@
- 
- 
- 
--
      UDP
       
--
--
--
--
      
--socket.udp()
--
      
--
--
      
--Creates and returns an unconnected IPv4 UDP object. 
--Unconnected objects support the 
--sendto, 
--receive, 
--receivefrom, 
--getoption, 
--getsockname, 
--setoption, 
--settimeout, 
--setpeername, 
--setsockname, and 
--close. 
--The setpeername 
--is used to connect the object.
--
      
--
--
      
--In case of success, a new unconnected UDP object
--returned. In case of error, nil is returned, followed by
--an error message.
--
      
--
--
--
--
      
--socket.udp6()
--
      
--
--
      
--Creates and returns an unconnected IPv6 UDP object. 
--Unconnected objects support the 
--sendto, 
--receive, 
--receivefrom, 
--getoption, 
--getsockname, 
--setoption, 
--settimeout, 
--setpeername, 
--setsockname, and 
--close. 
--The setpeername 
--is used to connect the object.
--
      
--
--
      
--In case of success, a new unconnected UDP object
--returned. In case of error, nil is returned, followed by
--an error message.
--
      
--
--
      
--Note: The TCP object returned will have the option
--"ipv6-v6only" set to true.
--
      
--
--
--
--
-+
      UDP
      
- 
- 
- 
-@@ -129,6 +62,40 @@ Garbage-collected objects are automatically closed before
- destruction, though.
- 
      
- 
-+
-+
-+
      
-+connected:getoption()
      
-+unconnected:getoption()
-+
      
-+
-+
      
-+Gets an option value from the UDP object.
-+See setoption for
-+description of the option names and values.
-+
      
-+
-+
      Option is a string with the option name.
-+
        
-+
      •  'dontroute'
-+
      •  'broadcast'
-+
      •  'reuseaddr'
-+
      •  'reuseport'
-+
      •  'ip-multicast-loop'
-+
      •  'ipv6-v6only'
-+
      •  'ip-multicast-if'
-+
      •  'ip-multicast-ttl'
-+
      •  'ip-add-membership'
-+
      •  'ip-drop-membership'
-+
      
-+
      
-+
-+
      
-+The method returns the option value in case of
-+success, or
-+nil followed by an error message otherwise.
-+
      
-+
- 
- 
- 
      
-@@ -142,10 +109,10 @@ associated with a connected UDP object.
- 
- 
- 
      
--Returns a string with the IP address of the peer, the 
--port number that peer is using for the connection, 
--and a string with the family ("inet" or "inet6"). 
--In case of error, the method returns nil. 
-+Returns a string with the IP address of the peer, the
-+port number that peer is using for the connection,
-+and a string with the family ("inet" or "inet6").
-+In case of error, the method returns nil.
- 
      
- 
- 
      
-@@ -165,9 +132,9 @@ Returns the local address information associated to the object.
- 
- 
- 
      
--The method returns a string with local IP address, a number with 
--the local port, 
--and a string with the family ("inet" or "inet6"). 
-+The method returns a string with local IP address, a number with
-+the local port,
-+and a string with the family ("inet" or "inet6").
- In case of error, the method returns nil.
- 
      
- 
-@@ -179,6 +146,18 @@ first time (in which case it is bound to an ephemeral port and the
- wild-card address).
- 
      
- 
-+
-+
-+
      
-+connected:settimeout(value)
      
-+unconnected:settimeout(value)
-+
      
-+
-+
      
-+Returns the current timeout value.
-+
      
-+
-+
- 
- 
- 
      
-@@ -199,9 +178,12 @@ specifies the maximum size of the datagram to be retrieved. If
- there are more than size bytes available in the datagram,
- the excess bytes are discarded. If there are less then
- size bytes available in the current datagram, the
--available bytes are returned. If size is omitted, the
--maximum datagram size is used (which is currently limited by the
--implementation to 8192 bytes).
-+available bytes are returned.
-+If size is omitted, the
-+compile-time constant socket._DATAGRAMSIZE is used
-+(it defaults to 8192 bytes). Larger sizes will cause a
-+temporary buffer to be allocated for the operation.
- 
      
- 
- 
      
-@@ -217,46 +199,12 @@ unconnected:receivefrom([size])
- 
      
- 
- 
      
--Works exactly as the receive 
-+Works exactly as the receive
- method, except it returns the IP
- address and port as extra return values (and is therefore slightly less
- efficient).
- 
      
- 
--
--
--
      
--connected:getoption()
      
--unconnected:getoption()
--
      
--
--
      
--Gets an option value from the UDP object.
--See setoption for
--description of the option names and values.
--
      
--
--
      Option is a string with the option name. 
--
        
--
      •  'dontroute'
--
      •  'broadcast'
--
      •  'reuseaddr'
--
      •  'reuseport'
--
      •  'ip-multicast-loop'
--
      •  'ipv6-v6only'
--
      •  'ip-multicast-if'
--
      •  'ip-multicast-ttl'
--
      •  'ip-add-membership' 
--
      •  'ip-drop-membership'
--
       
--
      
--
--
      
--The method returns the option value in case of
--success, or
--nil followed by an error message otherwise.
--
      
--
- 
- 
- 
      
-@@ -268,7 +216,7 @@ Sends a datagram to the UDP peer of a connected object.
- 
      
- 
- 
      
--Datagram is a string with the datagram contents. 
-+Datagram is a string with the datagram contents.
- The maximum datagram size for UDP is 64K minus IP layer overhead.
- However datagrams larger than the link layer packet size will be
- fragmented, which may deteriorate performance and/or reliability.
-@@ -298,11 +246,11 @@ Sends a datagram to the specified IP address and port number.
- 
- 
      
- Datagram is a string with the
--datagram contents. 
-+datagram contents.
- The maximum datagram size for UDP is 64K minus IP layer overhead.
- However datagrams larger than the link layer packet size will be
- fragmented, which may deteriorate performance and/or reliability.
--Ip is the IP address of the recipient. 
-+Ip is the IP address of the recipient.
- Host names are not allowed for performance reasons.
- 
- Port is the port number at the recipient.
-@@ -320,6 +268,75 @@ refuses to send a message to the specified address (i.e. no
- interface accepts the address).
- 
      
- 
-+
-+
-+
      
-+connected:setoption(option [, value])
      
-+unconnected:setoption(option [, value])
-+
      
-+
-+
      
-+Sets options for the UDP object. Options are
-+only needed by low-level or time-critical applications. You should
-+only modify an option if you are sure you need it.
      
-+
      Option is a string with the option
-+name, and value depends on the option being set:
-+
      
-+
-+
        
-+
      •  'dontroute': Indicates that outgoing
-+messages should bypass the standard routing facilities.
-+Receives a boolean value;
-+
      •  'broadcast': Requests permission to send
-+broadcast datagrams on the socket.
-+Receives a boolean value;
-+
      •  'reuseaddr': Indicates that the rules used in
-+validating addresses supplied in a bind() call
-+should allow reuse of local addresses.
-+Receives a boolean value;
-+
      •  'reuseport': Allows completely duplicate
-+bindings by multiple processes if they all set
-+'reuseport' before binding the port.
-+Receives a boolean value;
-+
      •  'ip-multicast-loop':
-+Specifies whether or not a copy of an outgoing multicast
-+datagram is delivered to the sending host as long as it is a
-+member of the multicast group.
-+Receives a boolean value;
-+
      •  'ipv6-v6only':
-+Specifies whether to restrict inet6 sockets to
-+sending and receiving only IPv6 packets.
-+Receive a boolean value;
-+
      •  'ip-multicast-if':
-+Sets the interface over which outgoing multicast datagrams
-+are sent.
-+Receives an IP address;
-+
      •  'ip-multicast-ttl':
-+Sets the Time To Live in the IP header for outgoing
-+multicast datagrams.
-+Receives a number;
-+
      •  'ip-add-membership':
-+Joins the multicast group specified.
-+Receives a table with fields
-+multiaddr and interface, each containing an
-+IP address;
-+
      •  'ip-drop-membership': Leaves the multicast
-+group specified.
-+Receives a table with fields
-+multiaddr and interface, each containing an
-+IP address.
-+
      
-+
-+
      
-+The method returns 1 in case of success, or
-+nil followed by an error message otherwise.
-+
      
-+
-+
      
-+Note: The descriptions above come from the man pages.
-+
      
-+
-+
- 
- 
- 
      
-@@ -337,9 +354,9 @@ object or vice versa.
- For connected objects, outgoing datagrams
- will be sent to the specified peer, and datagrams received from
- other peers will be discarded by the OS. Connected UDP objects must
--use the send and 
--receive methods instead of 
--sendto and 
-+use the send and
-+receive methods instead of
-+sendto and
- receivefrom.
- 
      
- 
-@@ -406,74 +423,6 @@ system or explicitly by setsockname, it cannot be
- changed.
- 
      
- 
--
--
--
      
--connected:setoption(option [, value])
      
--unconnected:setoption(option [, value])
--
      
--
--
      
--Sets options for the UDP object. Options are
--only needed by low-level or time-critical applications. You should
--only modify an option if you are sure you need it.
      
--
      Option is a string with the option
--name, and value depends on the option being set:
--
      
--
--
         
--
      •  'dontroute': Indicates that outgoing
--messages should bypass the standard routing facilities.
--Receives a boolean value;
--
      •  'broadcast': Requests permission to send 
--broadcast datagrams on the socket.
--Receives a boolean value;
--
      •  'reuseaddr': Indicates that the rules used in
--validating addresses supplied in a bind() call 
--should allow reuse of local addresses. 
--Receives a boolean value;
--
      •  'reuseport': Allows completely duplicate
--bindings by multiple processes if they all set
--'reuseport' before binding the port.
--Receives a boolean value;
--
      •  'ip-multicast-loop':
--Specifies whether or not a copy of an outgoing multicast
--datagram is delivered to the sending host as long as it is a
--member of the multicast group.
--Receives a boolean value;
--
      •  'ipv6-v6only':
--Specifies whether to restrict inet6 sockets to 
--sending and receiving only IPv6 packets.
--Receive a boolean value;
--
      •  'ip-multicast-if':
--Sets the interface over which outgoing multicast datagrams
--are sent.
--Receives an IP address;
--
      •  'ip-multicast-ttl':
--Sets the Time To Live in the IP header for outgoing
--multicast datagrams. 
--Receives a number;
--
      •  'ip-add-membership': 
--Joins the multicast group specified.
--Receives a table with fields
--multiaddr and interface, each containing an
--IP address;
--
      •  'ip-drop-membership': Leaves the multicast
--group specified.
--Receives a table with fields
--multiaddr and interface, each containing an
--IP address.
--
       
--
--
      
--The method returns 1 in case of success, or
--nil followed by an error message otherwise.
--
      
--
--
      
--Note: The descriptions above come from the man pages.
--
      
--
- 
- 
- 
      
-@@ -482,14 +431,14 @@ unconnected:settimeout(value)
- 
      
- 
- 
      
--Changes the timeout values for the object.  By default, the 
--receive and 
--receivefrom 
-+Changes the timeout values for the object.  By default, the
-+receive and
-+receivefrom
- operations are blocking. That is, any call to the methods will block
- indefinitely, until data arrives.  The settimeout function defines
- a limit on the amount of time the functions can block. When a timeout is
- set and the specified amount of time has elapsed, the affected methods
--give up and fail with an error code.  
-+give up and fail with an error code.
- 
      
- 
- 
      
-@@ -514,6 +463,114 @@ all other method names already contained verbs making their
- imperative nature obvious.
- 
      
- 
-+
-+
-+
      
-+socket.udp()
-+
      
-+
-+
      
-+Creates and returns an unconnected UDP object.
-+Unconnected objects support the
-+sendto,
-+receive,
-+receivefrom,
-+getoption,
-+getsockname,
-+setoption,
-+settimeout,
-+setpeername,
-+setsockname, and
-+close.
-+The setpeername
-+is used to connect the object.
-+
      
-+
-+
      
-+In case of success, a new unconnected UDP object
-+returned. In case of error, nil is returned, followed by
-+an error message.
-+
      
-+
-+
      
-+Note: The choice between IPv4 and IPv6 happens during a call to
-+sendto, setpeername, or sockname, depending on the address
-+family obtained from the resolver.
-+
      
-+
-+
      
-+Note: Before the choice between IPv4 and IPv6 happens,
-+the internal socket object is invalid and therefore setoption will fail.
-+
      
-+
-+
-+
-+
      
-+socket.udp4()
-+
      
-+
-+
      
-+Creates and returns an unconnected IPv4 UDP object.
-+Unconnected objects support the
-+sendto,
-+receive,
-+receivefrom,
-+getoption,
-+getsockname,
-+setoption,
-+settimeout,
-+setpeername,
-+setsockname, and
-+close.
-+The setpeername
-+is used to connect the object.
-+
      
-+
-+
      
-+In case of success, a new unconnected UDP object
-+returned. In case of error, nil is returned, followed by
-+an error message.
-+
      
-+
-+
-+
-+
      
-+socket.udp6()
-+
      
-+
-+
      
-+Creates and returns an unconnected IPv6 UDP object.
-+Unconnected objects support the
-+sendto,
-+receive,
-+receivefrom,
-+getoption,
-+getsockname,
-+setoption,
-+settimeout,
-+setpeername,
-+setsockname, and
-+close.
-+The setpeername
-+is used to connect the object.
-+
      
-+
-+
      
-+In case of success, a new unconnected UDP object
-+returned. In case of error, nil is returned, followed by
-+an error message.
-+
      
-+
-+
      
-+Note: The TCP object returned will have the option
-+"ipv6-v6only" set to true.
-+
      
-+
-+
-+
- 
- 
- 
      
-@@ -524,7 +581,7 @@ imperative nature obvious.
- download ·
- installation ·
- introduction ·
--reference 
-+reference
- 
      
- 
      
- 
-diff --git a/etc/dispatch.lua b/etc/dispatch.lua
-index cab7f59..2485415 100644
---- a/etc/dispatch.lua
-+++ b/etc/dispatch.lua
-@@ -5,6 +5,7 @@
- -----------------------------------------------------------------------------
- local base = _G
- local table = require("table")
-+local string = require("string")
- local socket = require("socket")
- local coroutine = require("coroutine")
- module("dispatch")
-@@ -43,26 +44,32 @@ end
- -----------------------------------------------------------------------------
- -- Mega hack. Don't try to do this at home.
- -----------------------------------------------------------------------------
---- we can't yield across calls to protect, so we rewrite it with coxpcall
-+-- we can't yield across calls to protect on Lua 5.1, so we rewrite it with
-+-- coroutines
- -- make sure you don't require any module that uses socket.protect before
- -- loading our hack
--function socket.protect(f)
--  return function(...)
--    local co = coroutine.create(f)
--    while true do
--      local results = {coroutine.resume(co, ...)}
--      local status = table.remove(results, 1)
--      if not status then
--        if base.type(results[1]) == 'table' then
--          return nil, results[1][1]
--        else base.error(results[1]) end
--      end
--      if coroutine.status(co) == "suspended" then
--        arg = {coroutine.yield(base.unpack(results))}
-+if string.sub(base._VERSION, -3) == "5.1" then
-+  local function _protect(co, status, ...)
-+    if not status then
-+      local msg = ...
-+      if base.type(msg) == 'table' then
-+        return nil, msg[1]
-       else
--        return base.unpack(results)
-+        base.error(msg, 0)
-       end
-     end
-+    if coroutine.status(co) == "suspended" then
-+      return _protect(co, coroutine.resume(co, coroutine.yield(...)))
-+    else
-+      return ...
-+    end
-+  end
-+
-+  function socket.protect(f)
-+    return function(...)
-+      local co = coroutine.create(f)
-+      return _protect(co, coroutine.resume(co, ...))
-+    end
-   end
- end
- 
-diff --git a/linux.cmd b/linux.cmd
-index bd59adc..6c6636b 100644
---- a/linux.cmd
-+++ b/linux.cmd
-@@ -1 +1 @@
--make PLAT=linux DEBUG=DEBUG LUAINC_linux_base=/home/diego/build/linux/include LUAPREFIX_linux=/home/diego/build/linux
-+make PLAT=linux DEBUG=DEBUG LUAINC_linux_base=/home/diego/build/ubuntu/include LUAPREFIX_linux=/home/diego/build/ubuntu
-diff --git a/luasocket-scm-0.rockspec b/luasocket-scm-0.rockspec
-index f86567b..352a497 100644
---- a/luasocket-scm-0.rockspec
-+++ b/luasocket-scm-0.rockspec
-@@ -50,13 +50,12 @@ local function make_plat(plat)
- 	}
- 	local modules = {
- 		["socket.core"] = {
--			sources = { "src/luasocket.c", "src/timeout.c", "src/buffer.c", "src/io.c", "src/auxiliar.c",
--						"src/options.c", "src/inet.c", "src/except.c", "src/select.c", "src/tcp.c", "src/udp.c" },
-+			sources = { "src/luasocket.c", "src/timeout.c", "src/buffer.c", "src/io.c", "src/auxiliar.c", "src/options.c", "src/inet.c", "src/except.c", "src/select.c", "src/tcp.c", "src/udp.c", "src/compat.c" },
- 			defines = defines[plat],
- 			incdir = "/src"
- 		},
--		["mime.core"] = { 
--			sources = { "src/mime.c" },
-+		["mime.core"] = {
-+			sources = { "src/mime.c", "src/compat.c" },
- 			defines = defines[plat],
- 			incdir = "/src"
- 		},
-@@ -73,14 +72,12 @@ local function make_plat(plat)
- 	if plat == "unix" or plat == "macosx" then
- 	    modules["socket.core"].sources[#modules["socket.core"].sources+1] = "src/usocket.c"
- 		modules["socket.unix"] = {
--		  sources = { "src/buffer.c", "src/auxiliar.c", "src/options.c", "src/timeout.c", "src/io.c", 
--					  "src/usocket.c", "src/unix.c" },
-+		  sources = { "src/buffer.c", "src/auxiliar.c", "src/options.c", "src/timeout.c", "src/io.c", "src/usocket.c", "src/unix.c" },
- 		  defines = defines[plat],
- 		  incdir = "/src"
- 		}
- 		modules["socket.serial"] = {
--		  sources = { "src/buffer.c", "src/auxiliar.c", "src/options.c", "src/timeout.c",
--					  "src/io.c", "src/usocket.c", "src/serial.c" },
-+		  sources = { "src/buffer.c", "src/auxiliar.c", "src/options.c", "src/timeout.c", "src/io.c", "src/usocket.c", "src/serial.c" },
- 		  defines = defines[plat],
- 		  incdir = "/src"
- 		}
-diff --git a/makefile b/makefile
-index 04cd894..cc15b4e 100644
---- a/makefile
-+++ b/makefile
-@@ -5,12 +5,12 @@
- # Targets:
- #   install            install system independent support
- #   install-unix           also install unix-only support
--#   install-both       install for both lua5.1 and lua5.2 
--#   install-both-unix      also install unix-only 
-+#   install-both       install for lua51 lua52 lua53
-+#   install-both-unix      also install unix-only
- #   print	           print the build settings
- 
- PLAT?= linux
--PLATS= macosx linux win32 mingw
-+PLATS= macosx linux win32 mingw freebsd solaris
- 
- all: $(PLAT)
- 
-@@ -24,20 +24,26 @@ test:
- 	lua test/hello.lua
- 
- install-both:
--	$(MAKE) clean 
-+	$(MAKE) clean
- 	@cd src; $(MAKE) $(PLAT) LUAV=5.1
- 	@cd src; $(MAKE) install LUAV=5.1
--	$(MAKE) clean 
-+	$(MAKE) clean
- 	@cd src; $(MAKE) $(PLAT) LUAV=5.2
- 	@cd src; $(MAKE) install LUAV=5.2
-+	$(MAKE) clean
-+	@cd src; $(MAKE) $(PLAT) LUAV=5.3
-+	@cd src; $(MAKE) install LUAV=5.3
- 
- install-both-unix:
--	$(MAKE) clean 
-+	$(MAKE) clean
- 	@cd src; $(MAKE) $(PLAT) LUAV=5.1
- 	@cd src; $(MAKE) install-unix LUAV=5.1
--	$(MAKE) clean 
-+	$(MAKE) clean
- 	@cd src; $(MAKE) $(PLAT) LUAV=5.2
- 	@cd src; $(MAKE) install-unix LUAV=5.2
-+	$(MAKE) clean
-+	@cd src; $(MAKE) $(PLAT) LUAV=5.3
-+	@cd src; $(MAKE) install-unix LUAV=5.3
- 
- .PHONY: test
- 
-diff --git a/src/auxiliar.c b/src/auxiliar.c
-index de625e9..18fa8e4 100644
---- a/src/auxiliar.c
-+++ b/src/auxiliar.c
-@@ -26,7 +26,7 @@ void auxiliar_newclass(lua_State *L, const char *classname, luaL_Reg *func) {
-     luaL_newmetatable(L, classname); /* mt */
-     /* create __index table to place methods */
-     lua_pushstring(L, "__index");    /* mt,"__index" */
--    lua_newtable(L);                 /* mt,"__index",it */ 
-+    lua_newtable(L);                 /* mt,"__index",it */
-     /* put class name into class metatable */
-     lua_pushstring(L, "class");      /* mt,"__index",it,"class" */
-     lua_pushstring(L, classname);    /* mt,"__index",it,"class",classname */
-@@ -84,7 +84,7 @@ int auxiliar_checkboolean(lua_State *L, int objidx) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Return userdata pointer if object belongs to a given class, abort with 
-+* Return userdata pointer if object belongs to a given class, abort with
- * error otherwise
- \*-------------------------------------------------------------------------*/
- void *auxiliar_checkclass(lua_State *L, const char *classname, int objidx) {
-@@ -98,7 +98,7 @@ void *auxiliar_checkclass(lua_State *L, const char *classname, int objidx) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Return userdata pointer if object belongs to a given group, abort with 
-+* Return userdata pointer if object belongs to a given group, abort with
- * error otherwise
- \*-------------------------------------------------------------------------*/
- void *auxiliar_checkgroup(lua_State *L, const char *groupname, int objidx) {
-@@ -121,7 +121,7 @@ void auxiliar_setclass(lua_State *L, const char *classname, int objidx) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Get a userdata pointer if object belongs to a given group. Return NULL 
-+* Get a userdata pointer if object belongs to a given group. Return NULL
- * otherwise
- \*-------------------------------------------------------------------------*/
- void *auxiliar_getgroupudata(lua_State *L, const char *groupname, int objidx) {
-@@ -139,7 +139,7 @@ void *auxiliar_getgroupudata(lua_State *L, const char *groupname, int objidx) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Get a userdata pointer if object belongs to a given class. Return NULL 
-+* Get a userdata pointer if object belongs to a given class. Return NULL
- * otherwise
- \*-------------------------------------------------------------------------*/
- void *auxiliar_getclassudata(lua_State *L, const char *classname, int objidx) {
-@@ -151,7 +151,7 @@ void *auxiliar_getclassudata(lua_State *L, const char *classname, int objidx) {
- * Used to be part of lauxlib in Lua 5.1, was dropped from 5.2.
- \*-------------------------------------------------------------------------*/
- int auxiliar_typeerror (lua_State *L, int narg, const char *tname) {
--  const char *msg = lua_pushfstring(L, "%s expected, got %s", tname, 
-+  const char *msg = lua_pushfstring(L, "%s expected, got %s", tname,
-       luaL_typename(L, narg));
-   return luaL_argerror(L, narg, msg);
- }
-diff --git a/src/auxiliar.h b/src/auxiliar.h
-index ea99013..65511d4 100644
---- a/src/auxiliar.h
-+++ b/src/auxiliar.h
-@@ -4,12 +4,12 @@
- * Auxiliar routines for class hierarchy manipulation
- * LuaSocket toolkit (but completely independent of other LuaSocket modules)
- *
--* A LuaSocket class is a name associated with Lua metatables. A LuaSocket 
--* group is a name associated with a class. A class can belong to any number 
-+* A LuaSocket class is a name associated with Lua metatables. A LuaSocket
-+* group is a name associated with a class. A class can belong to any number
- * of groups. This module provides the functionality to:
- *
--*   - create new classes 
--*   - add classes to groups 
-+*   - create new classes
-+*   - add classes to groups
- *   - set the class of objects
- *   - check if an object belongs to a given class or group
- *   - get the userdata associated to objects
-@@ -26,11 +26,12 @@
- * "class" with the class name.
- *
- * The mapping from class name to the corresponding metatable and the
--* reverse mapping are done using lauxlib. 
-+* reverse mapping are done using lauxlib.
- \*=========================================================================*/
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- int auxiliar_open(lua_State *L);
- void auxiliar_newclass(lua_State *L, const char *classname, luaL_Reg *func);
-diff --git a/src/buffer.c b/src/buffer.c
-index 4ef4e8e..fff1634 100644
---- a/src/buffer.c
-+++ b/src/buffer.c
-@@ -4,6 +4,7 @@
- \*=========================================================================*/
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "buffer.h"
- 
-@@ -37,7 +38,7 @@ int buffer_open(lua_State *L) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Initializes C structure 
-+* Initializes C structure
- \*-------------------------------------------------------------------------*/
- void buffer_init(p_buffer buf, p_io io, p_timeout tm) {
-     buf->first = buf->last = 0;
-@@ -61,8 +62,8 @@ int buffer_meth_getstats(lua_State *L, p_buffer buf) {
- * object:setstats() interface
- \*-------------------------------------------------------------------------*/
- int buffer_meth_setstats(lua_State *L, p_buffer buf) {
--    buf->received = (long) luaL_optnumber(L, 2, (lua_Number) buf->received); 
--    buf->sent = (long) luaL_optnumber(L, 3, (lua_Number) buf->sent); 
-+    buf->received = (long) luaL_optnumber(L, 2, (lua_Number) buf->received);
-+    buf->sent = (long) luaL_optnumber(L, 3, (lua_Number) buf->sent);
-     if (lua_isnumber(L, 4)) buf->birthday = timeout_gettime() - lua_tonumber(L, 4);
-     lua_pushnumber(L, 1);
-     return 1;
-@@ -78,9 +79,7 @@ int buffer_meth_send(lua_State *L, p_buffer buf) {
-     const char *data = luaL_checklstring(L, 2, &size);
-     long start = (long) luaL_optnumber(L, 3, 1);
-     long end = (long) luaL_optnumber(L, 4, -1);
--#ifdef LUASOCKET_DEBUG
--    p_timeout tm = timeout_markstart(buf->tm);
--#endif
-+    timeout_markstart(buf->tm);
-     if (start < 0) start = (long) (size+start+1);
-     if (end < 0) end = (long) (size+end+1);
-     if (start < 1) start = (long) 1;
-@@ -89,7 +88,7 @@ int buffer_meth_send(lua_State *L, p_buffer buf) {
-     /* check if there was an error */
-     if (err != IO_DONE) {
-         lua_pushnil(L);
--        lua_pushstring(L, buf->io->error(buf->io->ctx, err)); 
-+        lua_pushstring(L, buf->io->error(buf->io->ctx, err));
-         lua_pushnumber(L, (lua_Number) (sent+start-1));
-     } else {
-         lua_pushnumber(L, (lua_Number) (sent+start-1));
-@@ -98,7 +97,7 @@ int buffer_meth_send(lua_State *L, p_buffer buf) {
-     }
- #ifdef LUASOCKET_DEBUG
-     /* push time elapsed during operation as the last return value */
--    lua_pushnumber(L, timeout_gettime() - timeout_getstart(tm));
-+    lua_pushnumber(L, timeout_gettime() - timeout_getstart(buf->tm));
- #endif
-     return lua_gettop(L) - top;
- }
-@@ -111,10 +110,8 @@ int buffer_meth_receive(lua_State *L, p_buffer buf) {
-     luaL_Buffer b;
-     size_t size;
-     const char *part = luaL_optlstring(L, 3, "", &size);
--#ifdef LUASOCKET_DEBUG
--    p_timeout tm = timeout_markstart(buf->tm);
--#endif
--    /* initialize buffer with optional extra prefix 
-+    timeout_markstart(buf->tm);
-+    /* initialize buffer with optional extra prefix
-      * (useful for concatenating previous partial results) */
-     luaL_buffinit(L, &b);
-     luaL_addlstring(&b, part, size);
-@@ -122,12 +119,12 @@ int buffer_meth_receive(lua_State *L, p_buffer buf) {
-     if (!lua_isnumber(L, 2)) {
-         const char *p= luaL_optstring(L, 2, "*l");
-         if (p[0] == '*' && p[1] == 'l') err = recvline(buf, &b);
--        else if (p[0] == '*' && p[1] == 'a') err = recvall(buf, &b); 
-+        else if (p[0] == '*' && p[1] == 'a') err = recvall(buf, &b);
-         else luaL_argcheck(L, 0, 2, "invalid receive pattern");
--    /* get a fixed number of bytes (minus what was already partially 
-+    /* get a fixed number of bytes (minus what was already partially
-      * received) */
-     } else {
--        double n = lua_tonumber(L, 2); 
-+        double n = lua_tonumber(L, 2);
-         size_t wanted = (size_t) n;
-         luaL_argcheck(L, n >= 0, 2, "invalid receive pattern");
-         if (size == 0 || wanted > size)
-@@ -138,8 +135,8 @@ int buffer_meth_receive(lua_State *L, p_buffer buf) {
-         /* we can't push anyting in the stack before pushing the
-          * contents of the buffer. this is the reason for the complication */
-         luaL_pushresult(&b);
--        lua_pushstring(L, buf->io->error(buf->io->ctx, err)); 
--        lua_pushvalue(L, -2); 
-+        lua_pushstring(L, buf->io->error(buf->io->ctx, err));
-+        lua_pushvalue(L, -2);
-         lua_pushnil(L);
-         lua_replace(L, -4);
-     } else {
-@@ -149,7 +146,7 @@ int buffer_meth_receive(lua_State *L, p_buffer buf) {
-     }
- #ifdef LUASOCKET_DEBUG
-     /* push time elapsed during operation as the last return value */
--    lua_pushnumber(L, timeout_gettime() - timeout_getstart(tm));
-+    lua_pushnumber(L, timeout_gettime() - timeout_getstart(buf->tm));
- #endif
-     return lua_gettop(L) - top;
- }
-@@ -222,7 +219,7 @@ static int recvall(p_buffer buf, luaL_Buffer *b) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Reads a line terminated by a CR LF pair or just by a LF. The CR and LF 
-+* Reads a line terminated by a CR LF pair or just by a LF. The CR and LF
- * are not returned by the function and are discarded from the buffer
- \*-------------------------------------------------------------------------*/
- static int recvline(p_buffer buf, luaL_Buffer *b) {
-@@ -252,7 +249,7 @@ static int recvline(p_buffer buf, luaL_Buffer *b) {
- static void buffer_skip(p_buffer buf, size_t count) {
-     buf->received += count;
-     buf->first += count;
--    if (buffer_isempty(buf)) 
-+    if (buffer_isempty(buf))
-         buf->first = buf->last = 0;
- }
- 
-diff --git a/src/compat.c b/src/compat.c
-new file mode 100644
-index 0000000..c2d99cb
---- /dev/null
-+++ b/src/compat.c
-@@ -0,0 +1,19 @@
-+#include "compat.h"
-+
-+#if LUA_VERSION_NUM==501
-+/*
-+** Adapted from Lua 5.2
-+*/
-+void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup) {
-+  luaL_checkstack(L, nup+1, "too many upvalues");
-+  for (; l->name != NULL; l++) {  /* fill the table with given functions */
-+    int i;
-+    lua_pushstring(L, l->name);
-+    for (i = 0; i < nup; i++)  /* copy upvalues to the top */
-+      lua_pushvalue(L, -(nup+1));
-+    lua_pushcclosure(L, l->func, nup);  /* closure with those upvalues */
-+    lua_settable(L, -(nup + 3));
-+  }
-+  lua_pop(L, nup);  /* remove upvalues */
-+}
-+#endif
-diff --git a/src/compat.h b/src/compat.h
-new file mode 100644
-index 0000000..7bf8010
---- /dev/null
-+++ b/src/compat.h
-@@ -0,0 +1,11 @@
-+#ifndef COMPAT_H
-+#define COMPAT_H
-+
-+#include "lua.h"
-+#include "lauxlib.h"
-+
-+#if LUA_VERSION_NUM==501
-+void luaL_setfuncs (lua_State *L, const luaL_Reg *l, int nup);
-+#endif
-+
-+#endif
-diff --git a/src/except.c b/src/except.c
-index 002e701..60b5005 100644
---- a/src/except.c
-+++ b/src/except.c
-@@ -6,9 +6,19 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "except.h"
- 
-+#if LUA_VERSION_NUM < 502
-+#define lua_pcallk(L, na, nr, err, ctx, cont) \
-+    (((void)ctx),((void)cont),lua_pcall(L, na, nr, err))
-+#endif
-+
-+#if LUA_VERSION_NUM < 503
-+typedef int lua_KContext;
-+#endif
-+
- /*=========================================================================*\
- * Internal function prototypes.
- \*=========================================================================*/
-@@ -29,18 +39,17 @@ static luaL_Reg func[] = {
- * Try factory
- \*-------------------------------------------------------------------------*/
- static void wrap(lua_State *L) {
--    lua_newtable(L);
--    lua_pushnumber(L, 1);
--    lua_pushvalue(L, -3);
--    lua_settable(L, -3);
--    lua_insert(L, -2);
--    lua_pop(L, 1);
-+    lua_createtable(L, 1, 0);
-+    lua_pushvalue(L, -2);
-+    lua_rawseti(L, -2, 1);
-+    lua_pushvalue(L, lua_upvalueindex(1));
-+    lua_setmetatable(L, -2);
- }
- 
- static int finalize(lua_State *L) {
-     if (!lua_toboolean(L, 1)) {
--        lua_pushvalue(L, lua_upvalueindex(1));
--        lua_pcall(L, 0, 0, 0);
-+        lua_pushvalue(L, lua_upvalueindex(2));
-+        lua_call(L, 0, 0);
-         lua_settop(L, 2);
-         wrap(L);
-         lua_error(L);
-@@ -48,15 +57,17 @@ static int finalize(lua_State *L) {
-     } else return lua_gettop(L);
- }
- 
--static int do_nothing(lua_State *L) { 
-+static int do_nothing(lua_State *L) {
-     (void) L;
--    return 0; 
-+    return 0;
- }
- 
- static int global_newtry(lua_State *L) {
-     lua_settop(L, 1);
-     if (lua_isnil(L, 1)) lua_pushcfunction(L, do_nothing);
--    lua_pushcclosure(L, finalize, 1);
-+    lua_pushvalue(L, lua_upvalueindex(1));
-+    lua_insert(L, -2);
-+    lua_pushcclosure(L, finalize, 2);
-     return 1;
- }
- 
-@@ -64,27 +75,49 @@ static int global_newtry(lua_State *L) {
- * Protect factory
- \*-------------------------------------------------------------------------*/
- static int unwrap(lua_State *L) {
--    if (lua_istable(L, -1)) {
--        lua_pushnumber(L, 1);
--        lua_gettable(L, -2);
--        lua_pushnil(L);
--        lua_insert(L, -2);
--        return 1;
--    } else return 0;
-+    if (lua_istable(L, -1) && lua_getmetatable(L, -1)) {
-+        int r = lua_rawequal(L, -1, lua_upvalueindex(1));
-+        lua_pop(L, 1);
-+        if (r) {
-+            lua_pushnil(L);
-+            lua_rawgeti(L, -2, 1);
-+            return 1;
-+        }
-+    }
-+    return 0;
- }
- 
--static int protected_(lua_State *L) {
--    lua_pushvalue(L, lua_upvalueindex(1));
--    lua_insert(L, 1);
--    if (lua_pcall(L, lua_gettop(L) - 1, LUA_MULTRET, 0) != 0) {
-+static int protected_finish(lua_State *L, int status, lua_KContext ctx) {
-+    (void)ctx;
-+    if (status != 0 && status != LUA_YIELD) {
-         if (unwrap(L)) return 2;
--        else lua_error(L);
--        return 0;
-+        else return lua_error(L);
-     } else return lua_gettop(L);
- }
- 
-+#if LUA_VERSION_NUM == 502
-+static int protected_cont(lua_State *L) {
-+    int ctx = 0;
-+    int status = lua_getctx(L, &ctx);
-+    return protected_finish(L, status, ctx);
-+}
-+#else
-+#define protected_cont protected_finish
-+#endif
-+
-+static int protected_(lua_State *L) {
-+    int status;
-+    lua_pushvalue(L, lua_upvalueindex(2));
-+    lua_insert(L, 1);
-+    status = lua_pcallk(L, lua_gettop(L) - 1, LUA_MULTRET, 0, 0, protected_cont);
-+    return protected_finish(L, status, 0);
-+}
-+
- static int global_protect(lua_State *L) {
--    lua_pushcclosure(L, protected_, 1);
-+    lua_settop(L, 1);
-+    lua_pushvalue(L, lua_upvalueindex(1));
-+    lua_insert(L, 1);
-+    lua_pushcclosure(L, protected_, 2);
-     return 1;
- }
- 
-@@ -92,10 +125,9 @@ static int global_protect(lua_State *L) {
- * Init module
- \*-------------------------------------------------------------------------*/
- int except_open(lua_State *L) {
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
--    luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-+    lua_newtable(L); /* metatable for wrapped exceptions */
-+    lua_pushboolean(L, 0);
-+    lua_setfield(L, -2, "__metatable");
-+    luaL_setfuncs(L, func, 1);
-     return 0;
- }
-diff --git a/src/except.h b/src/except.h
-index 1e7a245..2497c05 100644
---- a/src/except.h
-+++ b/src/except.h
-@@ -9,21 +9,26 @@
- * error checking was taking a substantial amount of the coding. These
- * function greatly simplify the task of checking errors.
- *
--* The main idea is that functions should return nil as its first return
--* value when it finds an error, and return an error message (or value)
-+* The main idea is that functions should return nil as their first return
-+* values when they find an error, and return an error message (or value)
- * following nil. In case of success, as long as the first value is not nil,
- * the other values don't matter.
- *
- * The idea is to nest function calls with the "try" function. This function
--* checks the first value, and calls "error" on the second if the first is
--* nil. Otherwise, it returns all values it received. 
-+* checks the first value, and, if it's falsy, wraps the second value in a
-+* table with metatable and calls "error" on it. Otherwise, it returns all
-+* values it received. Basically, it works like the Lua "assert" function,
-+* but it creates errors targeted specifically at "protect".
- *
--* The protect function returns a new function that behaves exactly like the
--* function it receives, but the new function doesn't throw exceptions: it
--* returns nil followed by the error message instead.
-+* The "newtry" function is a factory for "try" functions that call a
-+* finalizer in protected mode before calling "error".
- *
--* With these two function, it's easy to write functions that throw
--* exceptions on error, but that don't interrupt the user script. 
-+* The "protect" function returns a new function that behaves exactly like
-+* the function it receives, but the new function catches exceptions thrown
-+* by "try" functions and returns nil followed by the error message instead.
-+*
-+* With these three functions, it's easy to write functions that throw
-+* exceptions on error, but that don't interrupt the user script.
- \*=========================================================================*/
- 
- #include "lua.h"
-diff --git a/src/ftp.lua b/src/ftp.lua
-index ea1145b..e0c3cae 100644
---- a/src/ftp.lua
-+++ b/src/ftp.lua
-@@ -268,11 +268,20 @@ _M.command = socket.protect(function(cmdt)
-     cmdt = override(cmdt)
-     socket.try(cmdt.host, "missing hostname")
-     socket.try(cmdt.command, "missing command")
--    local f = open(cmdt.host, cmdt.port, cmdt.create)
-+    local f = _M.open(cmdt.host, cmdt.port, cmdt.create)
-     f:greet()
-     f:login(cmdt.user, cmdt.password)
--    f.try(f.tp:command(cmdt.command, cmdt.argument))
--    if cmdt.check then f.try(f.tp:check(cmdt.check)) end
-+    if type(cmdt.command) == "table" then
-+        local argument = cmdt.argument or {}
-+        local check = cmdt.check or {}
-+        for i,cmd in ipairs(cmdt.command) do
-+            f.try(f.tp:command(cmd, argument[i]))
-+            if check[i] then f.try(f.tp:check(check[i])) end
-+        end
-+    else
-+        f.try(f.tp:command(cmdt.command, cmdt.argument))
-+        if cmdt.check then f.try(f.tp:check(cmdt.check)) end
-+    end
-     f:quit()
-     return f:close()
- end)
-@@ -282,4 +291,4 @@ _M.get = socket.protect(function(gett)
-     else return tget(gett) end
- end)
- 
--return _M
-\ No newline at end of file
-+return _M
-diff --git a/src/http.lua b/src/http.lua
-index ac4b2d6..d6bcc91 100644
---- a/src/http.lua
-+++ b/src/http.lua
-@@ -22,12 +22,15 @@ local _M = socket.http
- -- Program constants
- -----------------------------------------------------------------------------
- -- connection timeout in seconds
--TIMEOUT = 60
---- default port for document retrieval
--_M.PORT = 80
-+_M.TIMEOUT = 60
- -- user agent field sent in request
- _M.USERAGENT = socket._VERSION
- 
-+-- supported schemes
-+local SCHEMES = { ["http"] = true }
-+-- default port for document retrieval
-+local PORT = 80
-+
- -----------------------------------------------------------------------------
- -- Reads MIME headers from a connection, unfolding where needed
- -----------------------------------------------------------------------------
-@@ -114,7 +117,7 @@ function _M.open(host, port, create)
-     h.try = socket.newtry(function() h:close() end)
-     -- set timeout before connecting
-     h.try(c:settimeout(_M.TIMEOUT))
--    h.try(c:connect(host, port or _M.PORT))
-+    h.try(c:connect(host, port or PORT))
-     -- here everything worked
-     return h
- end
-@@ -186,7 +189,7 @@ end
- local function adjusturi(reqt)
-     local u = reqt
-     -- if there is a proxy, we need the full url. otherwise, just a part.
--    if not reqt.proxy and not PROXY then
-+    if not reqt.proxy and not _M.PROXY then
-         u = {
-            path = socket.try(reqt.path, "invalid path 'nil'"),
-            params = reqt.params,
-@@ -198,7 +201,7 @@ local function adjusturi(reqt)
- end
- 
- local function adjustproxy(reqt)
--    local proxy = reqt.proxy or PROXY
-+    local proxy = reqt.proxy or _M.PROXY
-     if proxy then
-         proxy = url.parse(proxy)
-         return proxy.host, proxy.port or 3128
-@@ -209,17 +212,27 @@ end
- 
- local function adjustheaders(reqt)
-     -- default headers
-+    local host = string.gsub(reqt.authority, "^.-@", "")
-     local lower = {
-         ["user-agent"] = _M.USERAGENT,
--        ["host"] = reqt.host,
-+        ["host"] = host,
-         ["connection"] = "close, TE",
-         ["te"] = "trailers"
-     }
-     -- if we have authentication information, pass it along
-     if reqt.user and reqt.password then
--        lower["authorization"] = 
-+        lower["authorization"] =
-             "Basic " ..  (mime.b64(reqt.user .. ":" .. reqt.password))
-     end
-+    -- if we have proxy authentication information, pass it along
-+    local proxy = reqt.proxy or _M.PROXY
-+    if proxy then
-+        proxy = url.parse(proxy)
-+        if proxy.user and proxy.password then
-+            lower["proxy-authorization"] =
-+                "Basic " ..  (mime.b64(proxy.user .. ":" .. proxy.password))
-+        end
-+    end
-     -- override with user headers
-     for i,v in base.pairs(reqt.headers or lower) do
-         lower[string.lower(i)] = v
-@@ -230,7 +243,7 @@ end
- -- default url parts
- local default = {
-     host = "",
--    port = _M.PORT,
-+    port = PORT,
-     path ="/",
-     scheme = "http"
- }
-@@ -240,22 +253,27 @@ local function adjustrequest(reqt)
-     local nreqt = reqt.url and url.parse(reqt.url, default) or {}
-     -- explicit components override url
-     for i,v in base.pairs(reqt) do nreqt[i] = v end
--    if nreqt.port == "" then nreqt.port = 80 end
--    socket.try(nreqt.host and nreqt.host ~= "", 
--        "invalid host '" .. base.tostring(nreqt.host) .. "'")
-+    if nreqt.port == "" then nreqt.port = PORT end
-+    if not (nreqt.host and nreqt.host ~= "") then
-+        socket.try(nil, "invalid host '" .. base.tostring(nreqt.host) .. "'")
-+    end
-     -- compute uri if user hasn't overriden
-     nreqt.uri = reqt.uri or adjusturi(nreqt)
--    -- ajust host and port if there is a proxy
--    nreqt.host, nreqt.port = adjustproxy(nreqt)
-     -- adjust headers in request
-     nreqt.headers = adjustheaders(nreqt)
-+    -- ajust host and port if there is a proxy
-+    nreqt.host, nreqt.port = adjustproxy(nreqt)
-     return nreqt
- end
- 
- local function shouldredirect(reqt, code, headers)
--    return headers.location and
--           string.gsub(headers.location, "%s", "") ~= "" and
--           (reqt.redirect ~= false) and
-+    local location = headers.location
-+    if not location then return false end
-+    location = string.gsub(location, "%s", "")
-+    if location == "" then return false end
-+    local scheme = string.match(location, "^([%w][%w%+%-%.]*)%:")
-+    if scheme and not SCHEMES[scheme] then return false end
-+    return (reqt.redirect ~= false) and
-            (code == 301 or code == 302 or code == 303 or code == 307) and
-            (not reqt.method or reqt.method == "GET" or reqt.method == "HEAD")
-            and (not reqt.nredirects or reqt.nredirects < 5)
-@@ -279,10 +297,10 @@ local trequest, tredirect
-         source = reqt.source,
-         sink = reqt.sink,
-         headers = reqt.headers,
--        proxy = reqt.proxy, 
-+        proxy = reqt.proxy,
-         nredirects = (reqt.nredirects or 0) + 1,
-         create = reqt.create
--    }   
-+    }
-     -- pass location header back as a hint we redirected
-     headers = headers or {}
-     headers.location = headers.location or location
-@@ -299,7 +317,7 @@ end
-     h:sendheaders(nreqt.headers)
-     -- if there is a body, send it
-     if nreqt.source then
--        h:sendbody(nreqt.headers, nreqt.source, nreqt.step) 
-+        h:sendbody(nreqt.headers, nreqt.source, nreqt.step)
-     end
-     local code, status = h:receivestatusline()
-     -- if it is an HTTP/0.9 server, simply get the body and we are done
-@@ -309,13 +327,13 @@ end
-     end
-     local headers
-     -- ignore any 100-continue messages
--    while code == 100 do 
-+    while code == 100 do
-         headers = h:receiveheaders()
-         code, status = h:receivestatusline()
-     end
-     headers = h:receiveheaders()
-     -- at this point we should have a honest reply from the server
--    -- we can't redirect if we already used the source, so we report the error 
-+    -- we can't redirect if we already used the source, so we report the error
-     if shouldredirect(nreqt, code, headers) and not nreqt.source then
-         h:close()
-         return tredirect(reqt, headers.location)
-@@ -351,4 +369,4 @@ _M.request = socket.protect(function(reqt, body)
-     else return trequest(reqt) end
- end)
- 
--return _M
-\ No newline at end of file
-+return _M
-diff --git a/src/inet.c b/src/inet.c
-index 1a411f6..f4c8404 100644
---- a/src/inet.c
-+++ b/src/inet.c
-@@ -8,6 +8,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "inet.h"
- 
-@@ -41,11 +42,7 @@ int inet_open(lua_State *L)
- {
-     lua_pushstring(L, "dns");
-     lua_newtable(L);
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-     lua_settable(L, -3);
-     return 0;
- }
-@@ -97,7 +94,7 @@ static int inet_global_getnameinfo(lua_State *L) {
- 
-     memset(&hints, 0, sizeof(hints));
-     hints.ai_socktype = SOCK_STREAM;
--    hints.ai_family = PF_UNSPEC;
-+    hints.ai_family = AF_UNSPEC;
- 
-     ret = getaddrinfo(host, serv, &hints, &resolved);
-     if (ret != 0) {
-@@ -108,8 +105,8 @@ static int inet_global_getnameinfo(lua_State *L) {
- 
-     lua_newtable(L);
-     for (i = 1, iter = resolved; iter; i++, iter = iter->ai_next) {
--        getnameinfo(iter->ai_addr, (socklen_t) iter->ai_addrlen, 
--            hbuf, host? (socklen_t) sizeof(hbuf): 0, 
-+        getnameinfo(iter->ai_addr, (socklen_t) iter->ai_addrlen,
-+            hbuf, host? (socklen_t) sizeof(hbuf): 0,
-             sbuf, serv? (socklen_t) sizeof(sbuf): 0, 0);
-         if (host) {
-             lua_pushnumber(L, i);
-@@ -149,7 +146,7 @@ static int inet_global_toip(lua_State *L)
- int inet_optfamily(lua_State* L, int narg, const char* def)
- {
-     static const char* optname[] = { "unspec", "inet", "inet6", NULL };
--    static int optvalue[] = { PF_UNSPEC, PF_INET, PF_INET6, 0 };
-+    static int optvalue[] = { AF_UNSPEC, AF_INET, AF_INET6, 0 };
- 
-     return optvalue[luaL_checkoption(L, narg, def, optname)];
- }
-@@ -170,7 +167,7 @@ static int inet_global_getaddrinfo(lua_State *L)
-     int i = 1, ret = 0;
-     memset(&hints, 0, sizeof(hints));
-     hints.ai_socktype = SOCK_STREAM;
--    hints.ai_family = PF_UNSPEC;
-+    hints.ai_family = AF_UNSPEC;
-     ret = getaddrinfo(hostname, NULL, &hints, &resolved);
-     if (ret != 0) {
-         lua_pushnil(L);
-@@ -180,9 +177,10 @@ static int inet_global_getaddrinfo(lua_State *L)
-     lua_newtable(L);
-     for (iterator = resolved; iterator; iterator = iterator->ai_next) {
-         char hbuf[NI_MAXHOST];
--        ret = getnameinfo(iterator->ai_addr, (socklen_t) iterator->ai_addrlen, 
-+        ret = getnameinfo(iterator->ai_addr, (socklen_t) iterator->ai_addrlen,
-             hbuf, (socklen_t) sizeof(hbuf), NULL, 0, NI_NUMERICHOST);
-         if (ret){
-+          freeaddrinfo(resolved);
-           lua_pushnil(L);
-           lua_pushstring(L, socket_gaistrerror(ret));
-           return 2;
-@@ -200,6 +198,16 @@ static int inet_global_getaddrinfo(lua_State *L)
-                 lua_pushliteral(L, "inet6");
-                 lua_settable(L, -3);
-                 break;
-+            case AF_UNSPEC:
-+                lua_pushliteral(L, "family");
-+                lua_pushliteral(L, "unspec");
-+                lua_settable(L, -3);
-+                break;
-+            default:
-+                lua_pushliteral(L, "family");
-+                lua_pushliteral(L, "unknown");
-+                lua_settable(L, -3);
-+                break;
-         }
-         lua_pushliteral(L, "addr");
-         lua_pushstring(L, hbuf);
-@@ -256,12 +264,11 @@ int inet_meth_getpeername(lua_State *L, p_socket ps, int family)
-     }
-     lua_pushstring(L, name);
-     lua_pushinteger(L, (int) strtol(port, (char **) NULL, 10));
--    if (family == PF_INET) {
--        lua_pushliteral(L, "inet");
--    } else if (family == PF_INET6) {
--        lua_pushliteral(L, "inet6");
--    } else {
--        lua_pushliteral(L, "uknown family");
-+    switch (family) {
-+        case AF_INET: lua_pushliteral(L, "inet"); break;
-+        case AF_INET6: lua_pushliteral(L, "inet6"); break;
-+        case AF_UNSPEC: lua_pushliteral(L, "unspec"); break;
-+        default: lua_pushliteral(L, "unknown"); break;
-     }
-     return 3;
- }
-@@ -281,7 +288,7 @@ int inet_meth_getsockname(lua_State *L, p_socket ps, int family)
-         lua_pushstring(L, socket_strerror(errno));
-         return 2;
-     }
--	err=getnameinfo((struct sockaddr *)&peer, peer_len, 
-+	err=getnameinfo((struct sockaddr *)&peer, peer_len,
- 		name, INET6_ADDRSTRLEN, port, 6, NI_NUMERICHOST | NI_NUMERICSERV);
-     if (err) {
-         lua_pushnil(L);
-@@ -290,12 +297,11 @@ int inet_meth_getsockname(lua_State *L, p_socket ps, int family)
-     }
-     lua_pushstring(L, name);
-     lua_pushstring(L, port);
--    if (family == PF_INET) {
--        lua_pushliteral(L, "inet");
--    } else if (family == PF_INET6) {
--        lua_pushliteral(L, "inet6");
--    } else {
--        lua_pushliteral(L, "uknown family");
-+    switch (family) {
-+        case AF_INET: lua_pushliteral(L, "inet"); break;
-+        case AF_INET6: lua_pushliteral(L, "inet6"); break;
-+        case AF_UNSPEC: lua_pushliteral(L, "unspec"); break;
-+        default: lua_pushliteral(L, "unknown"); break;
-     }
-     return 3;
- }
-@@ -346,8 +352,13 @@ static void inet_pushresolved(lua_State *L, struct hostent *hp)
- /*-------------------------------------------------------------------------*\
- * Tries to create a new inet socket
- \*-------------------------------------------------------------------------*/
--const char *inet_trycreate(p_socket ps, int family, int type) {
--    return socket_strerror(socket_create(ps, family, type, 0));
-+const char *inet_trycreate(p_socket ps, int family, int type, int protocol) {
-+    const char *err = socket_strerror(socket_create(ps, family, type, protocol));
-+    if (err == NULL && family == AF_INET6) {
-+        int yes = 1;
-+        setsockopt(*ps, IPPROTO_IPV6, IPV6_V6ONLY, (void *)&yes, sizeof(yes));
-+    }
-+    return err;
- }
- 
- /*-------------------------------------------------------------------------*\
-@@ -356,21 +367,21 @@ const char *inet_trycreate(p_socket ps, int family, int type) {
- const char *inet_trydisconnect(p_socket ps, int family, p_timeout tm)
- {
-     switch (family) {
--        case PF_INET: {
-+        case AF_INET: {
-             struct sockaddr_in sin;
-             memset((char *) &sin, 0, sizeof(sin));
-             sin.sin_family = AF_UNSPEC;
-             sin.sin_addr.s_addr = INADDR_ANY;
--            return socket_strerror(socket_connect(ps, (SA *) &sin, 
-+            return socket_strerror(socket_connect(ps, (SA *) &sin,
-                 sizeof(sin), tm));
-         }
--        case PF_INET6: {
-+        case AF_INET6: {
-             struct sockaddr_in6 sin6;
--            struct in6_addr addrany = IN6ADDR_ANY_INIT; 
-+            struct in6_addr addrany = IN6ADDR_ANY_INIT;
-             memset((char *) &sin6, 0, sizeof(sin6));
-             sin6.sin6_family = AF_UNSPEC;
-             sin6.sin6_addr = addrany;
--            return socket_strerror(socket_connect(ps, (SA *) &sin6, 
-+            return socket_strerror(socket_connect(ps, (SA *) &sin6,
-                 sizeof(sin6), tm));
-         }
-     }
-@@ -385,6 +396,7 @@ const char *inet_tryconnect(p_socket ps, int *family, const char *address,
- {
-     struct addrinfo *iterator = NULL, *resolved = NULL;
-     const char *err = NULL;
-+    int current_family = *family;
-     /* try resolving */
-     err = socket_gaistrerror(getaddrinfo(address, serv,
-                 connecthints, &resolved));
-@@ -399,23 +411,23 @@ const char *inet_tryconnect(p_socket ps, int *family, const char *address,
-          * that shows up while iterating. if there was a
-          * bind, all families will be the same and we will
-          * not enter this branch. */
--        if (*family != iterator->ai_family) {
-+        if (current_family != iterator->ai_family || *ps == SOCKET_INVALID) {
-             socket_destroy(ps);
--            err = socket_strerror(socket_create(ps, iterator->ai_family, 
--                iterator->ai_socktype, iterator->ai_protocol));
--            if (err != NULL) {
--                freeaddrinfo(resolved);
--                return err;
--            }
--            *family = iterator->ai_family;
--            /* all sockets initially non-blocking */
-+            err = inet_trycreate(ps, iterator->ai_family,
-+                iterator->ai_socktype, iterator->ai_protocol);
-+            if (err) continue;
-+            current_family = iterator->ai_family;
-+            /* set non-blocking before connect */
-             socket_setnonblocking(ps);
-         }
-         /* try connecting to remote address */
--        err = socket_strerror(socket_connect(ps, (SA *) iterator->ai_addr, 
-+        err = socket_strerror(socket_connect(ps, (SA *) iterator->ai_addr,
-             (socklen_t) iterator->ai_addrlen, tm));
--        /* if success, break out of loop */
--        if (err == NULL) break;
-+        /* if success or timeout is zero, break out of loop */
-+        if (err == NULL || timeout_iszero(tm)) {
-+            *family = current_family;
-+            break;
-+        }
-     }
-     freeaddrinfo(resolved);
-     /* here, if err is set, we failed */
-@@ -425,29 +437,27 @@ const char *inet_tryconnect(p_socket ps, int *family, const char *address,
- /*-------------------------------------------------------------------------*\
- * Tries to accept a socket
- \*-------------------------------------------------------------------------*/
--const char *inet_tryaccept(p_socket server, int family, p_socket client, 
--    p_timeout tm)
--{
-+const char *inet_tryaccept(p_socket server, int family, p_socket client,
-+    p_timeout tm) {
- 	socklen_t len;
- 	t_sockaddr_storage addr;
--	if (family == PF_INET6) {
--		len = sizeof(struct sockaddr_in6);
--	} else {
--		len = sizeof(struct sockaddr_in);
--	}
--	return socket_strerror(socket_accept(server, client, (SA *) &addr, 
-+    switch (family) {
-+        case AF_INET6: len = sizeof(struct sockaddr_in6); break;
-+        case AF_INET: len = sizeof(struct sockaddr_in); break;
-+        default: len = sizeof(addr); break;
-+    }
-+	return socket_strerror(socket_accept(server, client, (SA *) &addr,
-         &len, tm));
- }
- 
- /*-------------------------------------------------------------------------*\
- * Tries to bind socket to (address, port)
- \*-------------------------------------------------------------------------*/
--const char *inet_trybind(p_socket ps, const char *address, const char *serv,
--        struct addrinfo *bindhints)
--{
-+const char *inet_trybind(p_socket ps, int *family, const char *address,
-+    const char *serv, struct addrinfo *bindhints) {
-     struct addrinfo *iterator = NULL, *resolved = NULL;
-     const char *err = NULL;
--    t_socket sock = *ps;
-+    int current_family = *family;
-     /* translate luasocket special values to C */
-     if (strcmp(address, "*") == 0) address = NULL;
-     if (!serv) serv = "0";
-@@ -459,35 +469,32 @@ const char *inet_trybind(p_socket ps, const char *address, const char *serv,
-     }
-     /* iterate over resolved addresses until one is good */
-     for (iterator = resolved; iterator; iterator = iterator->ai_next) {
--        if(sock == SOCKET_INVALID) {
--            err = socket_strerror(socket_create(&sock, iterator->ai_family,
--                        iterator->ai_socktype, iterator->ai_protocol));
--            if(err)
--                continue;
-+        if (current_family != iterator->ai_family || *ps == SOCKET_INVALID) {
-+            socket_destroy(ps);
-+            err = inet_trycreate(ps, iterator->ai_family,
-+                        iterator->ai_socktype, iterator->ai_protocol);
-+            if (err) continue;
-+            current_family = iterator->ai_family;
-         }
-         /* try binding to local address */
--        err = socket_strerror(socket_bind(&sock,
--            (SA *) iterator->ai_addr,
-+        err = socket_strerror(socket_bind(ps, (SA *) iterator->ai_addr,
-             (socklen_t) iterator->ai_addrlen));
--
-         /* keep trying unless bind succeeded */
--        if (err) {
--            if(sock != *ps)
--                socket_destroy(&sock);
--        } else {
--            /* remember what we connected to, particularly the family */
--            *bindhints = *iterator;
-+        if (err == NULL) {
-+            *family = current_family;
-+            /* set to non-blocking after bind */
-+            socket_setnonblocking(ps);
-             break;
-         }
-     }
-     /* cleanup and return error */
-     freeaddrinfo(resolved);
--    *ps = sock;
-+    /* here, if err is set, we failed */
-     return err;
- }
- 
- /*-------------------------------------------------------------------------*\
--* Some systems do not provide these so that we provide our own. 
-+* Some systems do not provide these so that we provide our own.
- \*-------------------------------------------------------------------------*/
- #ifdef LUASOCKET_INET_ATON
- int inet_aton(const char *cp, struct in_addr *inp)
-@@ -512,7 +519,7 @@ int inet_aton(const char *cp, struct in_addr *inp)
- #endif
- 
- #ifdef LUASOCKET_INET_PTON
--int inet_pton(int af, const char *src, void *dst) 
-+int inet_pton(int af, const char *src, void *dst)
- {
-     struct addrinfo hints, *res;
-     int ret = 1;
-@@ -529,7 +536,7 @@ int inet_pton(int af, const char *src, void *dst)
-     } else {
-         ret = -1;
-     }
--    freeaddrinfo(res); 
-+    freeaddrinfo(res);
-     return ret;
- }
- 
-diff --git a/src/inet.h b/src/inet.h
-index 1f1a96a..feb3541 100644
---- a/src/inet.h
-+++ b/src/inet.h
-@@ -1,12 +1,12 @@
--#ifndef INET_H 
--#define INET_H 
-+#ifndef INET_H
-+#define INET_H
- /*=========================================================================*\
- * Internet domain functions
- * LuaSocket toolkit
- *
- * This module implements the creation and connection of internet domain
- * sockets, on top of the socket.h interface, and the interface of with the
--* resolver. 
-+* resolver.
- *
- * The function inet_aton is provided for the platforms where it is not
- * available. The module also implements the interface of the internet
-@@ -24,11 +24,11 @@
- 
- int inet_open(lua_State *L);
- 
--const char *inet_trycreate(p_socket ps, int family, int type);
-+const char *inet_trycreate(p_socket ps, int family, int type, int protocol);
- const char *inet_tryconnect(p_socket ps, int *family, const char *address,
-         const char *serv, p_timeout tm, struct addrinfo *connecthints);
--const char *inet_trybind(p_socket ps, const char *address, const char *serv,
--        struct addrinfo *bindhints);
-+const char *inet_trybind(p_socket ps, int *family, const char *address,
-+        const char *serv, struct addrinfo *bindhints);
- const char *inet_trydisconnect(p_socket ps, int family, p_timeout tm);
- const char *inet_tryaccept(p_socket server, int family, p_socket client, p_timeout tm);
- 
-diff --git a/src/io.c b/src/io.c
-index 35f46f7..a4230ce 100644
---- a/src/io.c
-+++ b/src/io.c
-@@ -25,6 +25,6 @@ const char *io_strerror(int err) {
-         case IO_DONE: return NULL;
-         case IO_CLOSED: return "closed";
-         case IO_TIMEOUT: return "timeout";
--        default: return "unknown error"; 
-+        default: return "unknown error";
-     }
- }
-diff --git a/src/io.h b/src/io.h
-index 76a3e58..8cca08a 100644
---- a/src/io.h
-+++ b/src/io.h
-@@ -22,7 +22,7 @@ enum {
-     IO_DONE = 0,        /* operation completed successfully */
-     IO_TIMEOUT = -1,    /* operation timed out */
-     IO_CLOSED = -2,     /* the connection has been closed */
--	IO_UNKNOWN = -3     
-+	IO_UNKNOWN = -3
- };
- 
- /* interface to error message function */
-diff --git a/src/ltn12.lua b/src/ltn12.lua
-index 5b10f56..575c5a7 100644
---- a/src/ltn12.lua
-+++ b/src/ltn12.lua
-@@ -9,6 +9,7 @@
- -----------------------------------------------------------------------------
- local string = require("string")
- local table = require("table")
-+local unpack = unpack or table.unpack
- local base = _G
- local _M = {}
- if module then -- heuristic for exporting a global package table
-@@ -21,6 +22,9 @@ _M.source = source
- _M.sink = sink
- _M.pump = pump
- 
-+local unpack = unpack or table.unpack
-+local select = base.select
-+
- -- 2048 seems to be better in windows...
- _M.BLOCKSIZE = 2048
- _M._VERSION = "LTN12 1.0.3"
-@@ -42,7 +46,7 @@ end
- -- (thanks to Wim Couwenberg)
- function filter.chain(...)
-     local arg = {...}
--    local n = select('#',...)
-+    local n = base.select('#',...)
-     local top, index = 1, 1
-     local retry = ""
-     return function(chunk)
-@@ -139,7 +143,9 @@ function source.rewind(src)
-     end
- end
- 
--function source.chain(src, f)
-+-- chains a source with one or several filter(s)
-+function source.chain(src, f, ...)
-+    if ... then f=filter.chain(f, ...) end
-     base.assert(src and f)
-     local last_in, last_out = "", ""
-     local state = "feeding"
-@@ -254,8 +260,13 @@ function sink.error(err)
-     end
- end
- 
---- chains a sink with a filter
--function sink.chain(f, snk)
-+-- chains a sink with one or several filter(s)
-+function sink.chain(f, snk, ...)
-+    if ... then
-+        local args = { f, snk, ... }
-+        snk = table.remove(args, #args)
-+        f = filter.chain(unpack(args))
-+    end
-     base.assert(f and snk)
-     return function(chunk, err)
-         if chunk ~= "" then
-diff --git a/src/luasocket.c b/src/luasocket.c
-index e6ee747..7d9c802 100644
---- a/src/luasocket.c
-+++ b/src/luasocket.c
-@@ -17,7 +17,7 @@
- \*=========================================================================*/
- #include "lua.h"
- #include "lauxlib.h"
--
-+#include "compat.h"
- 
- /*=========================================================================*\
- * LuaSocket includes
-@@ -64,7 +64,7 @@ static luaL_Reg func[] = {
- * Skip a few arguments
- \*-------------------------------------------------------------------------*/
- static int global_skip(lua_State *L) {
--    int amount = luaL_checkint(L, 1);
-+    int amount = luaL_checkinteger(L, 1);
-     int ret = lua_gettop(L) - amount - 1;
-     return ret >= 0 ? ret : 0;
- }
-@@ -78,26 +78,14 @@ static int global_unload(lua_State *L) {
-     return 0;
- }
- 
--#if LUA_VERSION_NUM > 501
--int luaL_typerror (lua_State *L, int narg, const char *tname) {
--  const char *msg = lua_pushfstring(L, "%s expected, got %s",
--                                    tname, luaL_typename(L, narg));
--  return luaL_argerror(L, narg, msg);
--}
--#endif
--
- /*-------------------------------------------------------------------------*\
- * Setup basic stuff.
- \*-------------------------------------------------------------------------*/
- static int base_open(lua_State *L) {
-     if (socket_open()) {
-         /* export functions (and leave namespace table on top of stack) */
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-         lua_newtable(L);
-         luaL_setfuncs(L, func, 0);
--#else
--        luaL_openlib(L, "socket", func, 0);
--#endif
- #ifdef LUASOCKET_DEBUG
-         lua_pushstring(L, "_DEBUG");
-         lua_pushboolean(L, 1);
-diff --git a/src/makefile b/src/makefile
-index c24e61b..adf687f 100644
---- a/src/makefile
-+++ b/src/makefile
-@@ -20,15 +20,17 @@ PLAT?=linux
- # lua version to build against
- LUAV?=5.1
- 
-+# MYCFLAGS: to be set by user if needed
-+MYCFLAGS=
-+
-+# MYLDFLAGS: to be set by user if needed
-+MYLDFLAGS=
-+
- # DEBUG: NODEBUG DEBUG
- # debug mode causes luasocket to collect and returns timing information useful
- # for testing and debugging luasocket itself
- DEBUG?=NODEBUG
- 
--# COMPAT: COMPAT NOCOMPAT
--# when compiling for 5.2, use LUA_COMPAT_MODULE
--COMPAT?=NOCOMPAT
--
- # where lua headers are found for macosx builds
- # LUAINC_macosx:
- # /opt/local/include
-@@ -40,7 +42,6 @@ LUAPREFIX_macosx?=/opt/local
- CDIR_macosx?=lib/lua/$(LUAV)
- LDIR_macosx?=share/lua/$(LUAV)
- 
--
- # LUAINC_linux:
- # /usr/include/lua$(LUAV)
- # /usr/local/include
-@@ -52,8 +53,17 @@ LUAPREFIX_linux?=/usr/local
- CDIR_linux?=lib/lua/$(LUAV)
- LDIR_linux?=share/lua/$(LUAV)
- 
-+# LUAINC_freebsd:
-+# /usr/local/include/lua$(LUAV)
-+# where lua headers are found for freebsd builds
-+LUAINC_freebsd_base?=/usr/local/include/
-+LUAINC_freebsd?=$(LUAINC_freebsd_base)/lua$(LUAV)
-+LUAPREFIX_freebsd?=/usr/local/
-+CDIR_freebsd?=lib/lua/$(LUAV)
-+LDIR_freebsd?=share/lua/$(LUAV)
-+
- # where lua headers are found for mingw builds
--# LUAINC_mingw: 
-+# LUAINC_mingw:
- # /opt/local/include
- LUAINC_mingw_base?=/usr/include
- LUAINC_mingw?=$(LUAINC_mingw_base)/lua/$(LUAV)
-@@ -67,13 +77,21 @@ LDIR_mingw?=lua/$(LUAV)/lua
- # LUAINC_win32:
- # LUALIB_win32:
- # where lua headers and libraries are found for win32 builds
--LUAINC_win32_base?=
--LUAINC_win32?=$(LUAINC_win32_base)/lua/$(LUAV)
--PLATFORM_win32?=Release
- LUAPREFIX_win32?=
--CDIR_win32?=lua/$(LUAV)/$(PLATFORM_win32)
--LDIR_win32?=lua/$(LUAV)/$(PLATFORM_win32)/lua
--LUALIB_win32?=$(LUAPREFIX_win32)/lua/$(LUAV)/$(PLATFORM_win32)
-+LUAINC_win32?=$(LUAPREFIX_win32)/include/lua/$(LUAV)
-+PLATFORM_win32?=Release
-+CDIR_win32?=bin/lua/$(LUAV)/$(PLATFORM_win32)
-+LDIR_win32?=bin/lua/$(LUAV)/$(PLATFORM_win32)/lua
-+LUALIB_win32?=$(LUAPREFIX_win32)/lib/lua/$(LUAV)/$(PLATFORM_win32)
-+LUALIBNAME_win32?=lua$(subst .,,$(LUAV)).lib 
-+
-+
-+# LUAINC_solaris:
-+LUAINC_solaris_base?=/usr/include
-+LUAINC_solaris?=$(LUAINC_solaris_base)/lua/$(LUAV)
-+LUAPREFIX_solaris?=/usr/local
-+CDIR_solaris?=lib/lua/$(LUAV)
-+LDIR_solaris?=share/lua/$(LUAV)
- 
- # prefix: /usr/local /usr /opt/local /sw
- # the top of the default install tree
-@@ -121,7 +139,7 @@ print:
- #------
- # Supported platforms
- #
--PLATS= macosx linux win32 mingw
-+PLATS= macosx linux win32 mingw solaris
- 
- #------
- # Compiler and linker settings
-@@ -129,11 +147,11 @@ PLATS= macosx linux win32 mingw
- SO_macosx=so
- O_macosx=o
- CC_macosx=gcc
--DEF_macosx= -DLUASOCKET_$(DEBUG) -DUNIX_HAS_SUN_LEN -DLUA_$(COMPAT)_MODULE \
-+DEF_macosx= -DLUASOCKET_$(DEBUG) -DUNIX_HAS_SUN_LEN \
- 	-DLUASOCKET_API='__attribute__((visibility("default")))' \
- 	-DUNIX_API='__attribute__((visibility("default")))' \
- 	-DMIME_API='__attribute__((visibility("default")))'
--CFLAGS_macosx= -I$(LUAINC) $(DEF) -pedantic -Wall -O2 -fno-common \
-+CFLAGS_macosx= -I$(LUAINC) $(DEF) -Wall -O2 -fno-common \
- 	-fvisibility=hidden
- LDFLAGS_macosx= -bundle -undefined dynamic_lookup -o 
- LD_macosx= export MACOSX_DEPLOYMENT_TARGET="10.3"; gcc
-@@ -145,11 +163,11 @@ SOCKET_macosx=usocket.o
- SO_linux=so
- O_linux=o
- CC_linux=gcc
--DEF_linux=-DLUASOCKET_$(DEBUG) -DLUA_$(COMPAT)_MODULE \
-+DEF_linux=-DLUASOCKET_$(DEBUG) \
- 	-DLUASOCKET_API='__attribute__((visibility("default")))' \
- 	-DUNIX_API='__attribute__((visibility("default")))' \
- 	-DMIME_API='__attribute__((visibility("default")))'
--CFLAGS_linux= -I$(LUAINC) $(DEF) -pedantic -Wall -Wshadow -Wextra \
-+CFLAGS_linux= -I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
- 	-Wimplicit -O2 -ggdb3 -fpic -fvisibility=hidden
- LDFLAGS_linux=-O -shared -fpic -o 
- LD_linux=gcc
-@@ -157,14 +175,46 @@ SOCKET_linux=usocket.o
- 
- #------
- # Compiler and linker settings
-+# for FreeBSD
-+SO_freebsd=so
-+O_freebsd=o
-+CC_freebsd=gcc
-+DEF_freebsd=-DLUASOCKET_$(DEBUG) \
-+	-DLUASOCKET_API='__attribute__((visibility("default")))' \
-+	-DUNIX_API='__attribute__((visibility("default")))' \
-+	-DMIME_API='__attribute__((visibility("default")))'
-+CFLAGS_freebsd= -I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
-+	-Wimplicit -O2 -ggdb3 -fpic -fvisibility=hidden
-+LDFLAGS_freebsd=-O -shared -fpic -o 
-+LD_freebsd=gcc
-+SOCKET_freebsd=usocket.o
-+
-+#------
-+# Compiler and linker settings
-+# for Solaris
-+SO_solaris=so
-+O_solaris=o
-+CC_solaris=gcc
-+DEF_solaris=-DLUASOCKET_$(DEBUG) \
-+	-DLUASOCKET_API='__attribute__((visibility("default")))' \
-+	-DUNIX_API='__attribute__((visibility("default")))' \
-+	-DMIME_API='__attribute__((visibility("default")))'
-+CFLAGS_solaris=-I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
-+	-Wimplicit -O2 -ggdb3 -fpic -fvisibility=hidden   
-+LDFLAGS_solaris=-lnsl -lsocket -lresolv -O -shared -fpic -o 
-+LD_solaris=gcc
-+SOCKET_solaris=usocket.o
-+
-+#------
-+# Compiler and linker settings
- # for MingW
- SO_mingw=dll
- O_mingw=o
- CC_mingw=gcc
--DEF_mingw= -DLUASOCKET_INET_PTON -DLUASOCKET_$(DEBUG) -DLUA_$(COMPAT)_MODULE \
-+DEF_mingw= -DLUASOCKET_INET_PTON -DLUASOCKET_$(DEBUG) \
- 	-DWINVER=0x0501 -DLUASOCKET_API='__declspec(dllexport)' \
- 	-DMIME_API='__declspec(dllexport)'
--CFLAGS_mingw= -I$(LUAINC) $(DEF) -pedantic -Wall -O2 -fno-common \
-+CFLAGS_mingw= -I$(LUAINC) $(DEF) -Wall -O2 -fno-common \
- 	-fvisibility=hidden
- LDFLAGS_mingw= $(LUALIB) -shared -Wl,-s -lws2_32 -o 
- LD_mingw=gcc
-@@ -179,8 +229,7 @@ O_win32=obj
- CC_win32=cl
- DEF_win32= //D "WIN32" //D "NDEBUG" //D "_WINDOWS" //D "_USRDLL" \
-      //D "LUASOCKET_API=__declspec(dllexport)" //D "_CRT_SECURE_NO_WARNINGS" \
--     //D "_WINDLL" //D "LUA_$(COMPAT)_MODULE" \
--	 //D "MIME_API=__declspec(dllexport)" \
-+     //D "_WINDLL" //D "MIME_API=__declspec(dllexport)" \
-      //D "LUASOCKET_$(DEBUG)" 
- CFLAGS_win32=//I "$(LUAINC)" $(DEF) //O2 //Ot //MD //W3 //nologo
- LDFLAGS_win32= //nologo //link //NOLOGO //DLL //INCREMENTAL:NO \
-@@ -188,7 +237,7 @@ LDFLAGS_win32= //nologo //link //NOLOGO //DLL //INCREMENTAL:NO \
-     //MANIFESTUAC:"level='asInvoker' uiAccess='false'" \
- 	//SUBSYSTEM:WINDOWS //OPT:REF //OPT:ICF //DYNAMICBASE:NO \
-     //MACHINE:X86 /LIBPATH:"$(shell cmd //c echo $(LUALIB))" \
--	lua$(subst .,,$(LUAV)).lib ws2_32.lib //OUT:
-+	$(LUALIBNAME_win32) ws2_32.lib //OUT:
- LD_win32=cl
- SOCKET_win32=wsocket.obj
- 
-@@ -204,8 +253,8 @@ SO=$(SO_$(PLAT))
- O=$(O_$(PLAT))
- SOCKET_V=3.0-rc1
- MIME_V=1.0.3
--SOCKET_SO=socket.$(SO).$(SOCKET_V)
--MIME_SO=mime.$(SO).$(MIME_V)
-+SOCKET_SO=socket-$(SOCKET_V).$(SO)
-+MIME_SO=mime-$(MIME_V).$(SO)
- UNIX_SO=unix.$(SO)
- SERIAL_SO=serial.$(SO)
- SOCKET=$(SOCKET_$(PLAT))
-@@ -215,8 +264,8 @@ SOCKET=$(SOCKET_$(PLAT))
- #
- CC=$(CC_$(PLAT))
- DEF=$(DEF_$(PLAT))
--CFLAGS=$(CFLAGS_$(PLAT))
--LDFLAGS=$(LDFLAGS_$(PLAT))
-+CFLAGS=$(MYCFLAGS) $(CFLAGS_$(PLAT))
-+LDFLAGS=$(MYLDFLAGS) $(LDFLAGS_$(PLAT))
- LD=$(LD_$(PLAT))
- LUAINC= $(LUAINC_$(PLAT))
- LUALIB= $(LUALIB_$(PLAT))
-@@ -230,6 +279,7 @@ SOCKET_OBJS= \
- 	buffer.$(O) \
- 	io.$(O) \
- 	auxiliar.$(O) \
-+	compat.$(O) \
- 	options.$(O) \
- 	inet.$(O) \
- 	$(SOCKET) \
-@@ -242,7 +292,8 @@ SOCKET_OBJS= \
- # Modules belonging mime-core
- #
- MIME_OBJS= \
--	mime.$(O)
-+	mime.$(O) \
-+	compat.$(O)
- 
- #------
- # Modules belonging unix (local domain sockets)
-@@ -259,7 +310,7 @@ UNIX_OBJS=\
- #------
- # Modules belonging to serial (device streams)
- #
--SERIAL_OBJS:=\
-+SERIAL_OBJS=\
- 	buffer.$(O) \
- 	auxiliar.$(O) \
- 	options.$(O) \
-@@ -289,6 +340,10 @@ TO_TOP_LDIR= \
- #
- default: $(PLAT)
- 
-+
-+freebsd:
-+	$(MAKE) all-unix PLAT=freebsd
-+
- macosx:
- 	$(MAKE) all-unix PLAT=macosx
- 
-@@ -300,6 +355,9 @@ linux:
- 
- mingw:
- 	$(MAKE) all PLAT=mingw
-+	
-+solaris:
-+	$(MAKE) all-unix PLAT=solaris
- 
- none:
- 	@echo "Please run"
-@@ -349,6 +407,7 @@ clean:
- #------
- # List of dependencies
- #
-+compat.$(O): compat.c compat.h
- auxiliar.$(O): auxiliar.c auxiliar.h
- buffer.$(O): buffer.c buffer.h io.h timeout.h
- except.$(O): except.c except.h
-diff --git a/src/mbox.lua b/src/mbox.lua
-index 7724ae2..ed9e781 100644
---- a/src/mbox.lua
-+++ b/src/mbox.lua
-@@ -61,7 +61,7 @@ function _M.parse_from(from)
- end
- 
- function _M.split_mbox(mbox_s)
--    mbox = {}
-+    local mbox = {}
-     mbox_s = string.gsub(mbox_s, "\r\n", "\n") .."\n\nFrom \n"
-     local nj, i, j = 1, 1, 1
-     while 1 do
-diff --git a/src/mime.c b/src/mime.c
-index dd37dcf..ed44104 100644
---- a/src/mime.c
-+++ b/src/mime.c
-@@ -6,10 +6,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
--
--#if !defined(LUA_VERSION_NUM) || (LUA_VERSION_NUM < 501)
--#include "compat-5.1.h"
--#endif
-+#include "compat.h"
- 
- #include "mime.h"
- 
-@@ -41,7 +38,7 @@ static size_t b64decode(UC c, UC *input, size_t size, luaL_Buffer *buffer);
- static void qpsetup(UC *class, UC *unbase);
- static void qpquote(UC c, luaL_Buffer *buffer);
- static size_t qpdecode(UC c, UC *input, size_t size, luaL_Buffer *buffer);
--static size_t qpencode(UC c, UC *input, size_t size, 
-+static size_t qpencode(UC c, UC *input, size_t size,
-         const char *marker, luaL_Buffer *buffer);
- static size_t qppad(UC *input, size_t size, luaL_Buffer *buffer);
- 
-@@ -81,12 +78,8 @@ static UC b64unbase[256];
- \*-------------------------------------------------------------------------*/
- MIME_API int luaopen_mime_core(lua_State *L)
- {
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     lua_newtable(L);
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, "mime", func, 0);
--#endif
-     /* make version string available to scripts */
-     lua_pushstring(L, "_VERSION");
-     lua_pushstring(L, MIME_VERSION);
-@@ -103,15 +96,15 @@ MIME_API int luaopen_mime_core(lua_State *L)
- /*-------------------------------------------------------------------------*\
- * Incrementaly breaks a string into lines. The string can have CRLF breaks.
- * A, n = wrp(l, B, length)
--* A is a copy of B, broken into lines of at most 'length' bytes. 
--* 'l' is how many bytes are left for the first line of B. 
--* 'n' is the number of bytes left in the last line of A. 
-+* A is a copy of B, broken into lines of at most 'length' bytes.
-+* 'l' is how many bytes are left for the first line of B.
-+* 'n' is the number of bytes left in the last line of A.
- \*-------------------------------------------------------------------------*/
- static int mime_global_wrp(lua_State *L)
- {
-     size_t size = 0;
-     int left = (int) luaL_checknumber(L, 1);
--    const UC *input = (UC *) luaL_optlstring(L, 2, NULL, &size);
-+    const UC *input = (const UC *) luaL_optlstring(L, 2, NULL, &size);
-     const UC *last = input + size;
-     int length = (int) luaL_optnumber(L, 3, 76);
-     luaL_Buffer buffer;
-@@ -123,7 +116,7 @@ static int mime_global_wrp(lua_State *L)
-         else lua_pushnil(L);
-         lua_pushnumber(L, length);
-         return 2;
--    } 
-+    }
-     luaL_buffinit(L, &buffer);
-     while (input < last) {
-         switch (*input) {
-@@ -150,9 +143,9 @@ static int mime_global_wrp(lua_State *L)
- }
- 
- /*-------------------------------------------------------------------------*\
--* Fill base64 decode map. 
-+* Fill base64 decode map.
- \*-------------------------------------------------------------------------*/
--static void b64setup(UC *unbase) 
-+static void b64setup(UC *unbase)
- {
-     int i;
-     for (i = 0; i <= 255; i++) unbase[i] = (UC) 255;
-@@ -161,11 +154,11 @@ static void b64setup(UC *unbase)
- }
- 
- /*-------------------------------------------------------------------------*\
--* Acumulates bytes in input buffer until 3 bytes are available. 
-+* Acumulates bytes in input buffer until 3 bytes are available.
- * Translate the 3 bytes into Base64 form and append to buffer.
- * Returns new number of bytes in buffer.
- \*-------------------------------------------------------------------------*/
--static size_t b64encode(UC c, UC *input, size_t size, 
-+static size_t b64encode(UC c, UC *input, size_t size,
-         luaL_Buffer *buffer)
- {
-     input[size++] = c;
-@@ -174,7 +167,7 @@ static size_t b64encode(UC c, UC *input, size_t size,
-         unsigned long value = 0;
-         value += input[0]; value <<= 8;
-         value += input[1]; value <<= 8;
--        value += input[2]; 
-+        value += input[2];
-         code[3] = b64base[value & 0x3f]; value >>= 6;
-         code[2] = b64base[value & 0x3f]; value >>= 6;
-         code[1] = b64base[value & 0x3f]; value >>= 6;
-@@ -186,11 +179,11 @@ static size_t b64encode(UC c, UC *input, size_t size,
- }
- 
- /*-------------------------------------------------------------------------*\
--* Encodes the Base64 last 1 or 2 bytes and adds padding '=' 
-+* Encodes the Base64 last 1 or 2 bytes and adds padding '='
- * Result, if any, is appended to buffer.
- * Returns 0.
- \*-------------------------------------------------------------------------*/
--static size_t b64pad(const UC *input, size_t size, 
-+static size_t b64pad(const UC *input, size_t size,
-         luaL_Buffer *buffer)
- {
-     unsigned long value = 0;
-@@ -203,7 +196,7 @@ static size_t b64pad(const UC *input, size_t size,
-             luaL_addlstring(buffer, (char *) code, 4);
-             break;
-         case 2:
--            value = input[0]; value <<= 8; 
-+            value = input[0]; value <<= 8;
-             value |= input[1]; value <<= 2;
-             code[2] = b64base[value & 0x3f]; value >>= 6;
-             code[1] = b64base[value & 0x3f]; value >>= 6;
-@@ -217,11 +210,11 @@ static size_t b64pad(const UC *input, size_t size,
- }
- 
- /*-------------------------------------------------------------------------*\
--* Acumulates bytes in input buffer until 4 bytes are available. 
-+* Acumulates bytes in input buffer until 4 bytes are available.
- * Translate the 4 bytes from Base64 form and append to buffer.
- * Returns new number of bytes in buffer.
- \*-------------------------------------------------------------------------*/
--static size_t b64decode(UC c, UC *input, size_t size, 
-+static size_t b64decode(UC c, UC *input, size_t size,
-         luaL_Buffer *buffer)
- {
-     /* ignore invalid characters */
-@@ -239,7 +232,7 @@ static size_t b64decode(UC c, UC *input, size_t size,
-         decoded[1] = (UC) (value & 0xff); value >>= 8;
-         decoded[0] = (UC) value;
-         /* take care of paddding */
--        valid = (input[2] == '=') ? 1 : (input[3] == '=') ? 2 : 3; 
-+        valid = (input[2] == '=') ? 1 : (input[3] == '=') ? 2 : 3;
-         luaL_addlstring(buffer, (char *) decoded, valid);
-         return 0;
-     /* need more data */
-@@ -251,7 +244,7 @@ static size_t b64decode(UC c, UC *input, size_t size,
- * A, B = b64(C, D)
- * A is the encoded version of the largest prefix of C .. D that is
- * divisible by 3. B has the remaining bytes of C .. D, *without* encoding.
--* The easiest thing would be to concatenate the two strings and 
-+* The easiest thing would be to concatenate the two strings and
- * encode the result, but we can't afford that or Lua would dupplicate
- * every chunk we received.
- \*-------------------------------------------------------------------------*/
-@@ -259,7 +252,7 @@ static int mime_global_b64(lua_State *L)
- {
-     UC atom[3];
-     size_t isize = 0, asize = 0;
--    const UC *input = (UC *) luaL_optlstring(L, 1, NULL, &isize);
-+    const UC *input = (const UC *) luaL_optlstring(L, 1, NULL, &isize);
-     const UC *last = input + isize;
-     luaL_Buffer buffer;
-     /* end-of-input blackhole */
-@@ -272,9 +265,9 @@ static int mime_global_b64(lua_State *L)
-     lua_settop(L, 2);
-     /* process first part of the input */
-     luaL_buffinit(L, &buffer);
--    while (input < last) 
-+    while (input < last)
-         asize = b64encode(*input++, atom, asize, &buffer);
--    input = (UC *) luaL_optlstring(L, 2, NULL, &isize);
-+    input = (const UC *) luaL_optlstring(L, 2, NULL, &isize);
-     /* if second part is nil, we are done */
-     if (!input) {
-         size_t osize = 0;
-@@ -288,7 +281,7 @@ static int mime_global_b64(lua_State *L)
-     }
-     /* otherwise process the second part */
-     last = input + isize;
--    while (input < last) 
-+    while (input < last)
-         asize = b64encode(*input++, atom, asize, &buffer);
-     luaL_pushresult(&buffer);
-     lua_pushlstring(L, (char *) atom, asize);
-@@ -305,7 +298,7 @@ static int mime_global_unb64(lua_State *L)
- {
-     UC atom[4];
-     size_t isize = 0, asize = 0;
--    const UC *input = (UC *) luaL_optlstring(L, 1, NULL, &isize);
-+    const UC *input = (const UC *) luaL_optlstring(L, 1, NULL, &isize);
-     const UC *last = input + isize;
-     luaL_Buffer buffer;
-     /* end-of-input blackhole */
-@@ -318,9 +311,9 @@ static int mime_global_unb64(lua_State *L)
-     lua_settop(L, 2);
-     /* process first part of the input */
-     luaL_buffinit(L, &buffer);
--    while (input < last) 
-+    while (input < last)
-         asize = b64decode(*input++, atom, asize, &buffer);
--    input = (UC *) luaL_optlstring(L, 2, NULL, &isize);
-+    input = (const UC *) luaL_optlstring(L, 2, NULL, &isize);
-     /* if second is nil, we are done */
-     if (!input) {
-         size_t osize = 0;
-@@ -333,7 +326,7 @@ static int mime_global_unb64(lua_State *L)
-     }
-     /* otherwise, process the rest of the input */
-     last = input + isize;
--    while (input < last) 
-+    while (input < last)
-         asize = b64decode(*input++, atom, asize, &buffer);
-     luaL_pushresult(&buffer);
-     lua_pushlstring(L, (char *) atom, asize);
-@@ -349,7 +342,7 @@ static int mime_global_unb64(lua_State *L)
- * 9 and 32 can be plain, unless in the end of a line, where must be =XX
- * encoded lines must be no longer than 76 not counting CRLF
- * soft line-break are =CRLF
--* To encode one byte, we need to see the next two. 
-+* To encode one byte, we need to see the next two.
- * Worst case is when we see a space, and wonder if a CRLF is comming
- \*-------------------------------------------------------------------------*/
- /*-------------------------------------------------------------------------*\
-@@ -362,7 +355,7 @@ static void qpsetup(UC *cl, UC *unbase)
-     for (i = 0; i < 256; i++) cl[i] = QP_QUOTED;
-     for (i = 33; i <= 60; i++) cl[i] = QP_PLAIN;
-     for (i = 62; i <= 126; i++) cl[i] = QP_PLAIN;
--    cl['\t'] = QP_IF_LAST; 
-+    cl['\t'] = QP_IF_LAST;
-     cl[' '] = QP_IF_LAST;
-     cl['\r'] = QP_CR;
-     for (i = 0; i < 256; i++) unbase[i] = 255;
-@@ -388,9 +381,9 @@ static void qpquote(UC c, luaL_Buffer *buffer)
- 
- /*-------------------------------------------------------------------------*\
- * Accumulate characters until we are sure about how to deal with them.
--* Once we are sure, output to the buffer, in the correct form. 
-+* Once we are sure, output to the buffer, in the correct form.
- \*-------------------------------------------------------------------------*/
--static size_t qpencode(UC c, UC *input, size_t size, 
-+static size_t qpencode(UC c, UC *input, size_t size,
-         const char *marker, luaL_Buffer *buffer)
- {
-     input[size++] = c;
-@@ -431,7 +424,7 @@ static size_t qpencode(UC c, UC *input, size_t size,
- }
- 
- /*-------------------------------------------------------------------------*\
--* Deal with the final characters 
-+* Deal with the final characters
- \*-------------------------------------------------------------------------*/
- static size_t qppad(UC *input, size_t size, luaL_Buffer *buffer)
- {
-@@ -448,8 +441,8 @@ static size_t qppad(UC *input, size_t size, luaL_Buffer *buffer)
- * Incrementally converts a string to quoted-printable
- * A, B = qp(C, D, marker)
- * Marker is the text to be used to replace CRLF sequences found in A.
--* A is the encoded version of the largest prefix of C .. D that 
--* can be encoded without doubts. 
-+* A is the encoded version of the largest prefix of C .. D that
-+* can be encoded without doubts.
- * B has the remaining bytes of C .. D, *without* encoding.
- \*-------------------------------------------------------------------------*/
- static int mime_global_qp(lua_State *L)
-@@ -457,7 +450,7 @@ static int mime_global_qp(lua_State *L)
- 
-     size_t asize = 0, isize = 0;
-     UC atom[3];
--    const UC *input = (UC *) luaL_optlstring(L, 1, NULL, &isize);
-+    const UC *input = (const UC *) luaL_optlstring(L, 1, NULL, &isize);
-     const UC *last = input + isize;
-     const char *marker = luaL_optstring(L, 3, CRLF);
-     luaL_Buffer buffer;
-@@ -473,7 +466,7 @@ static int mime_global_qp(lua_State *L)
-     luaL_buffinit(L, &buffer);
-     while (input < last)
-         asize = qpencode(*input++, atom, asize, marker, &buffer);
--    input = (UC *) luaL_optlstring(L, 2, NULL, &isize);
-+    input = (const UC *) luaL_optlstring(L, 2, NULL, &isize);
-     /* if second part is nil, we are done */
-     if (!input) {
-         asize = qppad(atom, asize, &buffer);
-@@ -493,7 +486,7 @@ static int mime_global_qp(lua_State *L)
- 
- /*-------------------------------------------------------------------------*\
- * Accumulate characters until we are sure about how to deal with them.
--* Once we are sure, output the to the buffer, in the correct form. 
-+* Once we are sure, output the to the buffer, in the correct form.
- \*-------------------------------------------------------------------------*/
- static size_t qpdecode(UC c, UC *input, size_t size, luaL_Buffer *buffer) {
-     int d;
-@@ -501,8 +494,8 @@ static size_t qpdecode(UC c, UC *input, size_t size, luaL_Buffer *buffer) {
-     /* deal with all characters we can deal */
-     switch (input[0]) {
-         /* if we have an escape character */
--        case '=': 
--            if (size < 3) return size; 
-+        case '=':
-+            if (size < 3) return size;
-             /* eliminate soft line break */
-             if (input[1] == '\r' && input[2] == '\n') return 0;
-             /* decode quoted representation */
-@@ -512,7 +505,7 @@ static size_t qpdecode(UC c, UC *input, size_t size, luaL_Buffer *buffer) {
-             else luaL_addchar(buffer, (char) ((c << 4) + d));
-             return 0;
-         case '\r':
--            if (size < 2) return size; 
-+            if (size < 2) return size;
-             if (input[1] == '\n') luaL_addlstring(buffer, (char *)input, 2);
-             return 0;
-         default:
-@@ -525,15 +518,15 @@ static size_t qpdecode(UC c, UC *input, size_t size, luaL_Buffer *buffer) {
- /*-------------------------------------------------------------------------*\
- * Incrementally decodes a string in quoted-printable
- * A, B = qp(C, D)
--* A is the decoded version of the largest prefix of C .. D that 
--* can be decoded without doubts. 
-+* A is the decoded version of the largest prefix of C .. D that
-+* can be decoded without doubts.
- * B has the remaining bytes of C .. D, *without* decoding.
- \*-------------------------------------------------------------------------*/
- static int mime_global_unqp(lua_State *L)
- {
-     size_t asize = 0, isize = 0;
-     UC atom[3];
--    const UC *input = (UC *) luaL_optlstring(L, 1, NULL, &isize);
-+    const UC *input = (const UC *) luaL_optlstring(L, 1, NULL, &isize);
-     const UC *last = input + isize;
-     luaL_Buffer buffer;
-     /* end-of-input blackhole */
-@@ -548,14 +541,14 @@ static int mime_global_unqp(lua_State *L)
-     luaL_buffinit(L, &buffer);
-     while (input < last)
-         asize = qpdecode(*input++, atom, asize, &buffer);
--    input = (UC *) luaL_optlstring(L, 2, NULL, &isize);
-+    input = (const UC *) luaL_optlstring(L, 2, NULL, &isize);
-     /* if second part is nil, we are done */
-     if (!input) {
-         luaL_pushresult(&buffer);
-         if (!(*lua_tostring(L, -1))) lua_pushnil(L);
-         lua_pushnil(L);
-         return 2;
--    } 
-+    }
-     /* otherwise process rest of input */
-     last = input + isize;
-     while (input < last)
-@@ -568,9 +561,9 @@ static int mime_global_unqp(lua_State *L)
- /*-------------------------------------------------------------------------*\
- * Incrementally breaks a quoted-printed string into lines
- * A, n = qpwrp(l, B, length)
--* A is a copy of B, broken into lines of at most 'length' bytes. 
--* 'l' is how many bytes are left for the first line of B. 
--* 'n' is the number of bytes left in the last line of A. 
-+* A is a copy of B, broken into lines of at most 'length' bytes.
-+* 'l' is how many bytes are left for the first line of B.
-+* 'n' is the number of bytes left in the last line of A.
- * There are two complications: lines can't be broken in the middle
- * of an encoded =XX, and there might be line breaks already
- \*-------------------------------------------------------------------------*/
-@@ -578,7 +571,7 @@ static int mime_global_qpwrp(lua_State *L)
- {
-     size_t size = 0;
-     int left = (int) luaL_checknumber(L, 1);
--    const UC *input = (UC *) luaL_optlstring(L, 2, NULL, &size);
-+    const UC *input = (const UC *) luaL_optlstring(L, 2, NULL, &size);
-     const UC *last = input + size;
-     int length = (int) luaL_optnumber(L, 3, 76);
-     luaL_Buffer buffer;
-@@ -603,11 +596,11 @@ static int mime_global_qpwrp(lua_State *L)
-                 if (left <= 3) {
-                     left = length;
-                     luaL_addstring(&buffer, EQCRLF);
--                } 
-+                }
-                 luaL_addchar(&buffer, *input);
-                 left--;
-                 break;
--            default: 
-+            default:
-                 if (left <= 1) {
-                     left = length;
-                     luaL_addstring(&buffer, EQCRLF);
-@@ -635,7 +628,7 @@ static int mime_global_qpwrp(lua_State *L)
- * last is the previous character
- \*-------------------------------------------------------------------------*/
- #define eolcandidate(c) (c == '\r' || c == '\n')
--static int eolprocess(int c, int last, const char *marker, 
-+static int eolprocess(int c, int last, const char *marker,
-         luaL_Buffer *buffer)
- {
-     if (eolcandidate(c)) {
-@@ -653,15 +646,15 @@ static int eolprocess(int c, int last, const char *marker,
- }
- 
- /*-------------------------------------------------------------------------*\
--* Converts a string to uniform EOL convention. 
-+* Converts a string to uniform EOL convention.
- * A, n = eol(o, B, marker)
- * A is the converted version of the largest prefix of B that can be
--* converted unambiguously. 'o' is the context returned by the previous 
-+* converted unambiguously. 'o' is the context returned by the previous
- * call. 'n' is the new context.
- \*-------------------------------------------------------------------------*/
- static int mime_global_eol(lua_State *L)
- {
--    int ctx = luaL_checkint(L, 1);
-+    int ctx = luaL_checkinteger(L, 1);
-     size_t isize = 0;
-     const char *input = luaL_optlstring(L, 2, NULL, &isize);
-     const char *last = input + isize;
-@@ -683,18 +676,18 @@ static int mime_global_eol(lua_State *L)
- }
- 
- /*-------------------------------------------------------------------------*\
--* Takes one byte and stuff it if needed. 
-+* Takes one byte and stuff it if needed.
- \*-------------------------------------------------------------------------*/
- static size_t dot(int c, size_t state, luaL_Buffer *buffer)
- {
-     luaL_addchar(buffer, (char) c);
-     switch (c) {
--        case '\r': 
-+        case '\r':
-             return 1;
--        case '\n': 
--            return (state == 1)? 2: 0; 
--        case '.':  
--            if (state == 2) 
-+        case '\n':
-+            return (state == 1)? 2: 0;
-+        case '.':
-+            if (state == 2)
-                 luaL_addchar(buffer, '.');
-         default:
-             return 0;
-@@ -719,7 +712,7 @@ static int mime_global_dot(lua_State *L)
-     }
-     /* process all input */
-     luaL_buffinit(L, &buffer);
--    while (input < last) 
-+    while (input < last)
-         state = dot(*input++, state, &buffer);
-     luaL_pushresult(&buffer);
-     lua_pushnumber(L, (lua_Number) state);
-diff --git a/src/options.c b/src/options.c
-index 8ac2a14..20f4c28 100644
---- a/src/options.c
-+++ b/src/options.c
-@@ -1,8 +1,8 @@
- /*=========================================================================*\
--* Common option interface 
-+* Common option interface
- * LuaSocket toolkit
- \*=========================================================================*/
--#include  
-+#include 
- 
- #include "lauxlib.h"
- 
-@@ -20,9 +20,9 @@ static int opt_setboolean(lua_State *L, p_socket ps, int level, int name);
- static int opt_getboolean(lua_State *L, p_socket ps, int level, int name);
- static int opt_setint(lua_State *L, p_socket ps, int level, int name);
- static int opt_getint(lua_State *L, p_socket ps, int level, int name);
--static int opt_set(lua_State *L, p_socket ps, int level, int name, 
-+static int opt_set(lua_State *L, p_socket ps, int level, int name,
-         void *val, int len);
--static int opt_get(lua_State *L, p_socket ps, int level, int name, 
-+static int opt_get(lua_State *L, p_socket ps, int level, int name,
-         void *val, int* len);
- 
- /*=========================================================================*\
-@@ -60,29 +60,29 @@ int opt_meth_getoption(lua_State *L, p_opt opt, p_socket ps)
- /* enables reuse of local address */
- int opt_set_reuseaddr(lua_State *L, p_socket ps)
- {
--    return opt_setboolean(L, ps, SOL_SOCKET, SO_REUSEADDR); 
-+    return opt_setboolean(L, ps, SOL_SOCKET, SO_REUSEADDR);
- }
- 
- int opt_get_reuseaddr(lua_State *L, p_socket ps)
- {
--    return opt_getboolean(L, ps, SOL_SOCKET, SO_REUSEADDR); 
-+    return opt_getboolean(L, ps, SOL_SOCKET, SO_REUSEADDR);
- }
- 
- /* enables reuse of local port */
- int opt_set_reuseport(lua_State *L, p_socket ps)
- {
--    return opt_setboolean(L, ps, SOL_SOCKET, SO_REUSEPORT); 
-+    return opt_setboolean(L, ps, SOL_SOCKET, SO_REUSEPORT);
- }
- 
- int opt_get_reuseport(lua_State *L, p_socket ps)
- {
--    return opt_getboolean(L, ps, SOL_SOCKET, SO_REUSEPORT); 
-+    return opt_getboolean(L, ps, SOL_SOCKET, SO_REUSEPORT);
- }
- 
- /* disables the Naggle algorithm */
- int opt_set_tcp_nodelay(lua_State *L, p_socket ps)
- {
--    return opt_setboolean(L, ps, IPPROTO_TCP, TCP_NODELAY); 
-+    return opt_setboolean(L, ps, IPPROTO_TCP, TCP_NODELAY);
- }
- 
- int opt_get_tcp_nodelay(lua_State *L, p_socket ps)
-@@ -92,12 +92,12 @@ int opt_get_tcp_nodelay(lua_State *L, p_socket ps)
- 
- int opt_set_keepalive(lua_State *L, p_socket ps)
- {
--    return opt_setboolean(L, ps, SOL_SOCKET, SO_KEEPALIVE); 
-+    return opt_setboolean(L, ps, SOL_SOCKET, SO_KEEPALIVE);
- }
- 
- int opt_get_keepalive(lua_State *L, p_socket ps)
- {
--    return opt_getboolean(L, ps, SOL_SOCKET, SO_KEEPALIVE); 
-+    return opt_getboolean(L, ps, SOL_SOCKET, SO_KEEPALIVE);
- }
- 
- int opt_set_dontroute(lua_State *L, p_socket ps)
-@@ -105,11 +105,21 @@ int opt_set_dontroute(lua_State *L, p_socket ps)
-     return opt_setboolean(L, ps, SOL_SOCKET, SO_DONTROUTE);
- }
- 
-+int opt_get_dontroute(lua_State *L, p_socket ps)
-+{
-+    return opt_getboolean(L, ps, SOL_SOCKET, SO_DONTROUTE);
-+}
-+
- int opt_set_broadcast(lua_State *L, p_socket ps)
- {
-     return opt_setboolean(L, ps, SOL_SOCKET, SO_BROADCAST);
- }
- 
-+int opt_get_broadcast(lua_State *L, p_socket ps)
-+{
-+    return opt_getboolean(L, ps, SOL_SOCKET, SO_BROADCAST);
-+}
-+
- int opt_set_ip6_unicast_hops(lua_State *L, p_socket ps)
- {
-   return opt_setint(L, ps, IPPROTO_IPV6, IPV6_UNICAST_HOPS);
-@@ -156,12 +166,12 @@ int opt_set_linger(lua_State *L, p_socket ps)
-     if (!lua_istable(L, 3)) auxiliar_typeerror(L,3,lua_typename(L, LUA_TTABLE));
-     lua_pushstring(L, "on");
-     lua_gettable(L, 3);
--    if (!lua_isboolean(L, -1)) 
-+    if (!lua_isboolean(L, -1))
-         luaL_argerror(L, 3, "boolean 'on' field expected");
-     li.l_onoff = (u_short) lua_toboolean(L, -1);
-     lua_pushstring(L, "timeout");
-     lua_gettable(L, 3);
--    if (!lua_isnumber(L, -1)) 
-+    if (!lua_isnumber(L, -1))
-         luaL_argerror(L, 3, "number 'timeout' field expected");
-     li.l_linger = (u_short) lua_tonumber(L, -1);
-     return opt_set(L, ps, SOL_SOCKET, SO_LINGER, (char *) &li, sizeof(li));
-@@ -194,7 +204,7 @@ int opt_set_ip_multicast_if(lua_State *L, p_socket ps)
-     val.s_addr = htonl(INADDR_ANY);
-     if (strcmp(address, "*") && !inet_aton(address, &val))
-         luaL_argerror(L, 3, "ip expected");
--    return opt_set(L, ps, IPPROTO_IP, IP_MULTICAST_IF, 
-+    return opt_set(L, ps, IPPROTO_IP, IP_MULTICAST_IF,
-         (char *) &val, sizeof(val));
- }
- 
-@@ -250,17 +260,17 @@ static int opt_setmembership(lua_State *L, p_socket ps, int level, int name)
-     if (!lua_istable(L, 3)) auxiliar_typeerror(L,3,lua_typename(L, LUA_TTABLE));
-     lua_pushstring(L, "multiaddr");
-     lua_gettable(L, 3);
--    if (!lua_isstring(L, -1)) 
-+    if (!lua_isstring(L, -1))
-         luaL_argerror(L, 3, "string 'multiaddr' field expected");
--    if (!inet_aton(lua_tostring(L, -1), &val.imr_multiaddr)) 
-+    if (!inet_aton(lua_tostring(L, -1), &val.imr_multiaddr))
-         luaL_argerror(L, 3, "invalid 'multiaddr' ip address");
-     lua_pushstring(L, "interface");
-     lua_gettable(L, 3);
--    if (!lua_isstring(L, -1)) 
-+    if (!lua_isstring(L, -1))
-         luaL_argerror(L, 3, "string 'interface' field expected");
-     val.imr_interface.s_addr = htonl(INADDR_ANY);
-     if (strcmp(lua_tostring(L, -1), "*") &&
--            !inet_aton(lua_tostring(L, -1), &val.imr_interface)) 
-+            !inet_aton(lua_tostring(L, -1), &val.imr_interface))
-         luaL_argerror(L, 3, "invalid 'interface' ip address");
-     return opt_set(L, ps, level, name, (char *) &val, sizeof(val));
- }
-@@ -272,14 +282,14 @@ static int opt_ip6_setmembership(lua_State *L, p_socket ps, int level, int name)
-     if (!lua_istable(L, 3)) auxiliar_typeerror(L,3,lua_typename(L, LUA_TTABLE));
-     lua_pushstring(L, "multiaddr");
-     lua_gettable(L, 3);
--    if (!lua_isstring(L, -1)) 
-+    if (!lua_isstring(L, -1))
-         luaL_argerror(L, 3, "string 'multiaddr' field expected");
--    if (!inet_pton(AF_INET6, lua_tostring(L, -1), &val.ipv6mr_multiaddr)) 
-+    if (!inet_pton(AF_INET6, lua_tostring(L, -1), &val.ipv6mr_multiaddr))
-         luaL_argerror(L, 3, "invalid 'multiaddr' ip address");
-     lua_pushstring(L, "interface");
-     lua_gettable(L, 3);
-     /* By default we listen to interface on default route
--     * (sigh). However, interface= can override it. We should 
-+     * (sigh). However, interface= can override it. We should
-      * support either number, or name for it. Waiting for
-      * windows port of if_nametoindex */
-     if (!lua_isnil(L, -1)) {
-@@ -291,7 +301,7 @@ static int opt_ip6_setmembership(lua_State *L, p_socket ps, int level, int name)
-     return opt_set(L, ps, level, name, (char *) &val, sizeof(val));
- }
- 
--static 
-+static
- int opt_get(lua_State *L, p_socket ps, int level, int name, void *val, int* len)
- {
-     socklen_t socklen = *len;
-@@ -304,7 +314,7 @@ int opt_get(lua_State *L, p_socket ps, int level, int name, void *val, int* len)
-     return 0;
- }
- 
--static 
-+static
- int opt_set(lua_State *L, p_socket ps, int level, int name, void *val, int len)
- {
-     if (setsockopt(*ps, level, name, (char *) val, len) < 0) {
-diff --git a/src/options.h b/src/options.h
-index 5657a06..19ba0df 100644
---- a/src/options.h
-+++ b/src/options.h
-@@ -21,7 +21,6 @@ typedef t_opt *p_opt;
- /* supported options for setoption */
- int opt_set_dontroute(lua_State *L, p_socket ps);
- int opt_set_broadcast(lua_State *L, p_socket ps);
--int opt_set_reuseaddr(lua_State *L, p_socket ps);
- int opt_set_tcp_nodelay(lua_State *L, p_socket ps);
- int opt_set_keepalive(lua_State *L, p_socket ps);
- int opt_set_linger(lua_State *L, p_socket ps);
-@@ -40,18 +39,21 @@ int opt_set_ip6_drop_membersip(lua_State *L, p_socket ps);
- int opt_set_ip6_v6only(lua_State *L, p_socket ps);
- 
- /* supported options for getoption */
-+int opt_get_dontroute(lua_State *L, p_socket ps);
-+int opt_get_broadcast(lua_State *L, p_socket ps);
- int opt_get_reuseaddr(lua_State *L, p_socket ps);
-+int opt_get_reuseport(lua_State *L, p_socket ps);
- int opt_get_tcp_nodelay(lua_State *L, p_socket ps);
- int opt_get_keepalive(lua_State *L, p_socket ps);
- int opt_get_linger(lua_State *L, p_socket ps);
--int opt_get_reuseaddr(lua_State *L, p_socket ps);
- int opt_get_ip_multicast_loop(lua_State *L, p_socket ps);
- int opt_get_ip_multicast_if(lua_State *L, p_socket ps);
- int opt_get_error(lua_State *L, p_socket ps);
- int opt_get_ip6_multicast_loop(lua_State *L, p_socket ps);
- int opt_get_ip6_multicast_hops(lua_State *L, p_socket ps);
- int opt_get_ip6_unicast_hops(lua_State *L, p_socket ps);
--int opt_get_ip6_v6only(lua_State *L, p_socket ps); 
-+int opt_get_ip6_v6only(lua_State *L, p_socket ps);
-+int opt_get_reuseport(lua_State *L, p_socket ps);
- 
- /* invokes the appropriate option handler */
- int opt_meth_setoption(lua_State *L, p_opt opt, p_socket ps);
-diff --git a/src/pierror.h b/src/pierror.h
-new file mode 100644
-index 0000000..cb773ab
---- /dev/null
-+++ b/src/pierror.h
-@@ -0,0 +1,28 @@
-+#ifndef PIERROR_H
-+#define PIERROR_H
-+/*=========================================================================*\
-+* Error messages
-+* Defines platform independent error messages
-+\*=========================================================================*/
-+
-+#define PIE_HOST_NOT_FOUND "host not found"
-+#define PIE_ADDRINUSE      "address already in use"
-+#define PIE_ISCONN         "already connected"
-+#define PIE_ACCESS         "permission denied"
-+#define PIE_CONNREFUSED    "connection refused"
-+#define PIE_CONNABORTED    "closed"
-+#define PIE_CONNRESET      "closed"
-+#define PIE_TIMEDOUT       "timeout"
-+#define PIE_AGAIN          "temporary failure in name resolution"
-+#define PIE_BADFLAGS       "invalid value for ai_flags"
-+#define PIE_BADHINTS       "invalid value for hints"
-+#define PIE_FAIL           "non-recoverable failure in name resolution"
-+#define PIE_FAMILY         "ai_family not supported"
-+#define PIE_MEMORY         "memory allocation failure"
-+#define PIE_NONAME         "host or service not provided, or not known"
-+#define PIE_OVERFLOW       "argument buffer overflow"
-+#define PIE_PROTOCOL       "resolved protocol is unknown"
-+#define PIE_SERVICE        "service not supported for socket type"
-+#define PIE_SOCKTYPE       "ai_socktype not supported"
-+
-+#endif
-diff --git a/src/select.c b/src/select.c
-index fafaa62..9d133b7 100644
---- a/src/select.c
-+++ b/src/select.c
-@@ -6,6 +6,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "socket.h"
- #include "timeout.h"
-@@ -16,10 +17,10 @@
- \*=========================================================================*/
- static t_socket getfd(lua_State *L);
- static int dirty(lua_State *L);
--static void collect_fd(lua_State *L, int tab, int itab, 
-+static void collect_fd(lua_State *L, int tab, int itab,
-         fd_set *set, t_socket *max_fd);
- static int check_dirty(lua_State *L, int tab, int dtab, fd_set *set);
--static void return_fd(lua_State *L, fd_set *set, t_socket max_fd, 
-+static void return_fd(lua_State *L, fd_set *set, t_socket max_fd,
-         int itab, int tab, int start);
- static void make_assoc(lua_State *L, int tab);
- static int global_select(lua_State *L);
-@@ -38,13 +39,12 @@ static luaL_Reg func[] = {
- \*-------------------------------------------------------------------------*/
- int select_open(lua_State *L) {
-     lua_pushstring(L, "_SETSIZE");
--    lua_pushnumber(L, FD_SETSIZE);
-+    lua_pushinteger(L, FD_SETSIZE);
-+    lua_rawset(L, -3);
-+    lua_pushstring(L, "_SOCKETINVALID");
-+    lua_pushinteger(L, SOCKET_INVALID);
-     lua_rawset(L, -3);
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-     return 0;
- }
- 
-@@ -98,10 +98,10 @@ static t_socket getfd(lua_State *L) {
-         lua_pushvalue(L, -2);
-         lua_call(L, 1, 1);
-         if (lua_isnumber(L, -1)) {
--            double numfd = lua_tonumber(L, -1); 
-+            double numfd = lua_tonumber(L, -1);
-             fd = (numfd >= 0.0)? (t_socket) numfd: SOCKET_INVALID;
-         }
--    } 
-+    }
-     lua_pop(L, 1);
-     return fd;
- }
-@@ -114,12 +114,12 @@ static int dirty(lua_State *L) {
-         lua_pushvalue(L, -2);
-         lua_call(L, 1, 1);
-         is = lua_toboolean(L, -1);
--    } 
-+    }
-     lua_pop(L, 1);
-     return is;
- }
- 
--static void collect_fd(lua_State *L, int tab, int itab, 
-+static void collect_fd(lua_State *L, int tab, int itab,
-         fd_set *set, t_socket *max_fd) {
-     int i = 1, n = 0;
-     /* nil is the same as an empty table */
-@@ -139,16 +139,16 @@ static void collect_fd(lua_State *L, int tab, int itab,
-         if (fd != SOCKET_INVALID) {
-             /* make sure we don't overflow the fd_set */
- #ifdef _WIN32
--            if (n >= FD_SETSIZE) 
-+            if (n >= FD_SETSIZE)
-                 luaL_argerror(L, tab, "too many sockets");
- #else
--            if (fd >= FD_SETSIZE) 
-+            if (fd >= FD_SETSIZE)
-                 luaL_argerror(L, tab, "descriptor too large for set size");
- #endif
-             FD_SET(fd, set);
-             n++;
-             /* keep track of the largest descriptor so far */
--            if (*max_fd == SOCKET_INVALID || *max_fd < fd) 
-+            if (*max_fd == SOCKET_INVALID || *max_fd < fd)
-                 *max_fd = fd;
-             /* make sure we can map back from descriptor to the object */
-             lua_pushnumber(L, (lua_Number) fd);
-@@ -162,9 +162,9 @@ static void collect_fd(lua_State *L, int tab, int itab,
- 
- static int check_dirty(lua_State *L, int tab, int dtab, fd_set *set) {
-     int ndirty = 0, i = 1;
--    if (lua_isnil(L, tab)) 
-+    if (lua_isnil(L, tab))
-         return 0;
--    for ( ;; ) { 
-+    for ( ;; ) {
-         t_socket fd;
-         lua_pushnumber(L, i);
-         lua_gettable(L, tab);
-@@ -185,7 +185,7 @@ static int check_dirty(lua_State *L, int tab, int dtab, fd_set *set) {
-     return ndirty;
- }
- 
--static void return_fd(lua_State *L, fd_set *set, t_socket max_fd, 
-+static void return_fd(lua_State *L, fd_set *set, t_socket max_fd,
-         int itab, int tab, int start) {
-     t_socket fd;
-     for (fd = 0; fd < max_fd; fd++) {
-diff --git a/src/serial.c b/src/serial.c
-index 583d4e5..7bdb21c 100644
---- a/src/serial.c
-+++ b/src/serial.c
-@@ -2,7 +2,7 @@
- * Serial stream
- * LuaSocket toolkit
- \*=========================================================================*/
--#include  
-+#include 
- 
- #include "lua.h"
- #include "lauxlib.h"
-@@ -11,7 +11,7 @@
- #include "socket.h"
- #include "options.h"
- #include "unix.h"
--#include  
-+#include 
- 
- /*
- Reuses userdata definition from unix.h, since it is useful for all
-@@ -54,15 +54,6 @@ static luaL_Reg serial_methods[] = {
-     {NULL,          NULL}
- };
- 
--/* our socket creation function */
--/* this is an ad-hoc module that returns a single function 
-- * as such, do not include other functions in this array. */
--static luaL_Reg func[] = {
--    {"serial", global_create},
--    {NULL,          NULL}
--};
--
--
- /*-------------------------------------------------------------------------*\
- * Initializes module
- \*-------------------------------------------------------------------------*/
-@@ -71,14 +62,7 @@ LUASOCKET_API int luaopen_socket_serial(lua_State *L) {
-     auxiliar_newclass(L, "serial{client}", serial_methods);
-     /* create class groups */
-     auxiliar_add2group(L, "serial{client}", "serial{any}");
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
--    lua_pushcfunction(L, global_create);
--    (void) func;
--#else
--    /* set function into socket namespace */
--    luaL_openlib(L, "socket", func, 0);
-     lua_pushcfunction(L, global_create);
--#endif
-     return 1;
- }
- 
-@@ -120,7 +104,7 @@ static int meth_getfd(lua_State *L) {
- /* this is very dangerous, but can be handy for those that are brave enough */
- static int meth_setfd(lua_State *L) {
-     p_unix un = (p_unix) auxiliar_checkgroup(L, "serial{any}", 1);
--    un->sock = (t_socket) luaL_checknumber(L, 2); 
-+    un->sock = (t_socket) luaL_checknumber(L, 2);
-     return 0;
- }
- 
-@@ -131,7 +115,7 @@ static int meth_dirty(lua_State *L) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Closes socket used by object 
-+* Closes socket used by object
- \*-------------------------------------------------------------------------*/
- static int meth_close(lua_State *L)
- {
-@@ -156,7 +140,7 @@ static int meth_settimeout(lua_State *L) {
- 
- 
- /*-------------------------------------------------------------------------*\
--* Creates a serial object 
-+* Creates a serial object
- \*-------------------------------------------------------------------------*/
- static int global_create(lua_State *L) {
-     const char* path = luaL_checkstring(L, 1);
-@@ -180,7 +164,7 @@ static int global_create(lua_State *L) {
-     /* initialize remaining structure fields */
-     socket_setnonblocking(&sock);
-     un->sock = sock;
--    io_init(&un->io, (p_send) socket_write, (p_recv) socket_read, 
-+    io_init(&un->io, (p_send) socket_write, (p_recv) socket_read,
-             (p_error) socket_ioerror, &un->sock);
-     timeout_init(&un->tm, -1, -1);
-     buffer_init(&un->buf, &un->io, &un->tm);
-diff --git a/src/socket.lua b/src/socket.lua
-index 3913e6f..d1c0b16 100644
---- a/src/socket.lua
-+++ b/src/socket.lua
-@@ -32,23 +32,23 @@ function _M.bind(host, port, backlog)
-     err = "no info on address"
-     for i, alt in base.ipairs(addrinfo) do
-         if alt.family == "inet" then
--            sock, err = socket.tcp()
-+            sock, err = socket.tcp4()
-         else
-             sock, err = socket.tcp6()
-         end
-         if not sock then return nil, err end
-         sock:setoption("reuseaddr", true)
-         res, err = sock:bind(alt.addr, port)
--        if not res then 
-+        if not res then
-             sock:close()
--        else 
-+        else
-             res, err = sock:listen(backlog)
--            if not res then 
-+            if not res then
-                 sock:close()
-             else
-                 return sock
-             end
--        end 
-+        end
-     end
-     return nil, err
- end
-diff --git a/src/tcp.c b/src/tcp.c
-index 6594bda..ef9ee6f 100644
---- a/src/tcp.c
-+++ b/src/tcp.c
-@@ -6,6 +6,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "auxiliar.h"
- #include "socket.h"
-@@ -17,6 +18,7 @@
- * Internal function prototypes
- \*=========================================================================*/
- static int global_create(lua_State *L);
-+static int global_create4(lua_State *L);
- static int global_create6(lua_State *L);
- static int global_connect(lua_State *L);
- static int meth_connect(lua_State *L);
-@@ -34,6 +36,7 @@ static int meth_accept(lua_State *L);
- static int meth_close(lua_State *L);
- static int meth_getoption(lua_State *L);
- static int meth_setoption(lua_State *L);
-+static int meth_gettimeout(lua_State *L);
- static int meth_settimeout(lua_State *L);
- static int meth_getfd(lua_State *L);
- static int meth_setfd(lua_State *L);
-@@ -63,6 +66,7 @@ static luaL_Reg tcp_methods[] = {
-     {"setpeername", meth_connect},
-     {"setsockname", meth_bind},
-     {"settimeout",  meth_settimeout},
-+    {"gettimeout",  meth_gettimeout},
-     {"shutdown",    meth_shutdown},
-     {NULL,          NULL}
- };
-@@ -71,6 +75,7 @@ static luaL_Reg tcp_methods[] = {
- static t_opt optget[] = {
-     {"keepalive",   opt_get_keepalive},
-     {"reuseaddr",   opt_get_reuseaddr},
-+    {"reuseport",   opt_get_reuseport},
-     {"tcp-nodelay", opt_get_tcp_nodelay},
-     {"linger",      opt_get_linger},
-     {"error",       opt_get_error},
-@@ -80,6 +85,7 @@ static t_opt optget[] = {
- static t_opt optset[] = {
-     {"keepalive",   opt_set_keepalive},
-     {"reuseaddr",   opt_set_reuseaddr},
-+    {"reuseport",   opt_set_reuseport},
-     {"tcp-nodelay", opt_set_tcp_nodelay},
-     {"ipv6-v6only", opt_set_ip6_v6only},
-     {"linger",      opt_set_linger},
-@@ -89,6 +95,7 @@ static t_opt optset[] = {
- /* functions in library namespace */
- static luaL_Reg func[] = {
-     {"tcp", global_create},
-+    {"tcp4", global_create4},
-     {"tcp6", global_create6},
-     {"connect", global_connect},
-     {NULL, NULL}
-@@ -108,11 +115,7 @@ int tcp_open(lua_State *L)
-     auxiliar_add2group(L, "tcp{client}", "tcp{any}");
-     auxiliar_add2group(L, "tcp{server}", "tcp{any}");
-     /* define library functions */
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-     return 0;
- }
- 
-@@ -216,8 +219,7 @@ static int meth_accept(lua_State *L)
- /*-------------------------------------------------------------------------*\
- * Binds an object to an address
- \*-------------------------------------------------------------------------*/
--static int meth_bind(lua_State *L)
--{
-+static int meth_bind(lua_State *L) {
-     p_tcp tcp = (p_tcp) auxiliar_checkclass(L, "tcp{master}", 1);
-     const char *address =  luaL_checkstring(L, 2);
-     const char *port = luaL_checkstring(L, 3);
-@@ -227,7 +229,7 @@ static int meth_bind(lua_State *L)
-     bindhints.ai_socktype = SOCK_STREAM;
-     bindhints.ai_family = tcp->family;
-     bindhints.ai_flags = AI_PASSIVE;
--    err = inet_trybind(&tcp->sock, address, port, &bindhints);
-+    err = inet_trybind(&tcp->sock, &tcp->family, address, port, &bindhints);
-     if (err) {
-         lua_pushnil(L);
-         lua_pushstring(L, err);
-@@ -240,8 +242,7 @@ static int meth_bind(lua_State *L)
- /*-------------------------------------------------------------------------*\
- * Turns a master tcp object into a client object.
- \*-------------------------------------------------------------------------*/
--static int meth_connect(lua_State *L)
--{
-+static int meth_connect(lua_State *L) {
-     p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
-     const char *address =  luaL_checkstring(L, 2);
-     const char *port = luaL_checkstring(L, 3);
-@@ -252,7 +253,7 @@ static int meth_connect(lua_State *L)
-     /* make sure we try to connect only to the same family */
-     connecthints.ai_family = tcp->family;
-     timeout_markstart(&tcp->tm);
--    err = inet_tryconnect(&tcp->sock, &tcp->family, address, port, 
-+    err = inet_tryconnect(&tcp->sock, &tcp->family, address, port,
-         &tcp->tm, &connecthints);
-     /* have to set the class even if it failed due to non-blocking connects */
-     auxiliar_setclass(L, "tcp{client}", 1);
-@@ -282,9 +283,12 @@ static int meth_close(lua_State *L)
- static int meth_getfamily(lua_State *L)
- {
-     p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
--    if (tcp->family == PF_INET6) {
-+    if (tcp->family == AF_INET6) {
-         lua_pushliteral(L, "inet6");
-         return 1;
-+    } else if (tcp->family == AF_INET) {
-+        lua_pushliteral(L, "inet4");
-+        return 1;
-     } else {
-         lua_pushliteral(L, "inet4");
-         return 1;
-@@ -348,6 +352,12 @@ static int meth_settimeout(lua_State *L)
-     return timeout_meth_settimeout(L, &tcp->tm);
- }
- 
-+static int meth_gettimeout(lua_State *L)
-+{
-+    p_tcp tcp = (p_tcp) auxiliar_checkgroup(L, "tcp{any}", 1);
-+    return timeout_meth_gettimeout(L, &tcp->tm);
-+}
-+
- /*=========================================================================*\
- * Library functions
- \*=========================================================================*/
-@@ -355,37 +365,36 @@ static int meth_settimeout(lua_State *L)
- * Creates a master tcp object
- \*-------------------------------------------------------------------------*/
- static int tcp_create(lua_State *L, int family) {
--    t_socket sock;
--    const char *err = inet_trycreate(&sock, family, SOCK_STREAM);
--    /* try to allocate a system socket */
--    if (!err) {
--        /* allocate tcp object */
--        p_tcp tcp = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
--        memset(tcp, 0, sizeof(t_tcp));
--        /* set its type as master object */
--        auxiliar_setclass(L, "tcp{master}", -1);
--        /* initialize remaining structure fields */
--        socket_setnonblocking(&sock);
--        if (family == PF_INET6) {
--            int yes = 1;
--            setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
--                (void *)&yes, sizeof(yes));
-+    p_tcp tcp = (p_tcp) lua_newuserdata(L, sizeof(t_tcp));
-+    memset(tcp, 0, sizeof(t_tcp));
-+    /* set its type as master object */
-+    auxiliar_setclass(L, "tcp{master}", -1);
-+    /* if family is AF_UNSPEC, we leave the socket invalid and
-+     * store AF_UNSPEC into family. This will allow it to later be
-+     * replaced with an AF_INET6 or AF_INET socket upon first use. */
-+    tcp->sock = SOCKET_INVALID;
-+    tcp->family = family;
-+    io_init(&tcp->io, (p_send) socket_send, (p_recv) socket_recv,
-+            (p_error) socket_ioerror, &tcp->sock);
-+    timeout_init(&tcp->tm, -1, -1);
-+    buffer_init(&tcp->buf, &tcp->io, &tcp->tm);
-+    if (family != AF_UNSPEC) {
-+        const char *err = inet_trycreate(&tcp->sock, family, SOCK_STREAM, 0);
-+        if (err != NULL) {
-+            lua_pushnil(L);
-+            lua_pushstring(L, err);
-+            return 2;
-         }
--        tcp->sock = sock;
--        io_init(&tcp->io, (p_send) socket_send, (p_recv) socket_recv,
--                (p_error) socket_ioerror, &tcp->sock);
--        timeout_init(&tcp->tm, -1, -1);
--        buffer_init(&tcp->buf, &tcp->io, &tcp->tm);
--        tcp->family = family;
--        return 1;
--    } else {
--        lua_pushnil(L);
--        lua_pushstring(L, err);
--        return 2;
-+        socket_setnonblocking(&tcp->sock);
-     }
-+    return 1;
- }
- 
- static int global_create(lua_State *L) {
-+    return tcp_create(L, AF_UNSPEC);
-+}
-+
-+static int global_create4(lua_State *L) {
-     return tcp_create(L, AF_INET);
- }
- 
-@@ -393,53 +402,6 @@ static int global_create6(lua_State *L) {
-     return tcp_create(L, AF_INET6);
- }
- 
--#if 0
--static const char *tryconnect6(const char *remoteaddr, const char *remoteserv,
--    struct addrinfo *connecthints, p_tcp tcp) {
--    struct addrinfo *iterator = NULL, *resolved = NULL;
--    const char *err = NULL;
--    /* try resolving */
--    err = socket_gaistrerror(getaddrinfo(remoteaddr, remoteserv,
--                connecthints, &resolved));
--    if (err != NULL) {
--        if (resolved) freeaddrinfo(resolved);
--        return err;
--    }
--    /* iterate over all returned addresses trying to connect */
--    for (iterator = resolved; iterator; iterator = iterator->ai_next) {
--        p_timeout tm = timeout_markstart(&tcp->tm);
--        /* create new socket if necessary. if there was no
--         * bind, we need to create one for every new family
--         * that shows up while iterating. if there was a
--         * bind, all families will be the same and we will
--         * not enter this branch. */
--        if (tcp->family != iterator->ai_family) {
--            socket_destroy(&tcp->sock);
--            err = socket_strerror(socket_create(&tcp->sock,
--                iterator->ai_family, iterator->ai_socktype,
--                iterator->ai_protocol));
--            if (err != NULL) {
--                freeaddrinfo(resolved);
--                return err;
--            }
--            tcp->family = iterator->ai_family;
--            /* all sockets initially non-blocking */
--            socket_setnonblocking(&tcp->sock);
--        }
--        /* finally try connecting to remote address */
--        err = socket_strerror(socket_connect(&tcp->sock,
--            (SA *) iterator->ai_addr,
--            (socklen_t) iterator->ai_addrlen, tm));
--        /* if success, break out of loop */
--        if (err == NULL) break;
--    }
--
--    freeaddrinfo(resolved);
--    /* here, if err is set, we failed */
--    return err;
--}
--#endif
--
- static int global_connect(lua_State *L) {
-     const char *remoteaddr = luaL_checkstring(L, 1);
-     const char *remoteserv = luaL_checkstring(L, 2);
-@@ -456,26 +418,26 @@ static int global_connect(lua_State *L) {
-     timeout_init(&tcp->tm, -1, -1);
-     buffer_init(&tcp->buf, &tcp->io, &tcp->tm);
-     tcp->sock = SOCKET_INVALID;
--    tcp->family = PF_UNSPEC;
-+    tcp->family = AF_UNSPEC;
-     /* allow user to pick local address and port */
-     memset(&bindhints, 0, sizeof(bindhints));
-     bindhints.ai_socktype = SOCK_STREAM;
-     bindhints.ai_family = family;
-     bindhints.ai_flags = AI_PASSIVE;
-     if (localaddr) {
--        err = inet_trybind(&tcp->sock, localaddr, localserv, &bindhints);
-+        err = inet_trybind(&tcp->sock, &tcp->family, localaddr,
-+            localserv, &bindhints);
-         if (err) {
-             lua_pushnil(L);
-             lua_pushstring(L, err);
-             return 2;
-         }
--        tcp->family = bindhints.ai_family;
-     }
-     /* try to connect to remote address and port */
-     memset(&connecthints, 0, sizeof(connecthints));
-     connecthints.ai_socktype = SOCK_STREAM;
-     /* make sure we try to connect only to the same family */
--    connecthints.ai_family = bindhints.ai_family;
-+    connecthints.ai_family = tcp->family;
-     err = inet_tryconnect(&tcp->sock, &tcp->family, remoteaddr, remoteserv,
-          &tcp->tm, &connecthints);
-     if (err) {
-diff --git a/src/timeout.c b/src/timeout.c
-index bdd5e1c..5a601d5 100644
---- a/src/timeout.c
-+++ b/src/timeout.c
-@@ -8,6 +8,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "auxiliar.h"
- #include "timeout.h"
-@@ -52,7 +53,7 @@ void timeout_init(p_timeout tm, double block, double total) {
- 
- /*-------------------------------------------------------------------------*\
- * Determines how much time we have left for the next system call,
--* if the previous call was successful 
-+* if the previous call was successful
- * Input
- *   tm: timeout control structure
- * Returns
-@@ -107,7 +108,7 @@ double timeout_getretry(p_timeout tm) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Marks the operation start time in structure 
-+* Marks the operation start time in structure
- * Input
- *   tm: timeout control structure
- \*-------------------------------------------------------------------------*/
-@@ -117,7 +118,7 @@ p_timeout timeout_markstart(p_timeout tm) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Gets time in s, relative to January 1, 1970 (UTC) 
-+* Gets time in s, relative to January 1, 1970 (UTC)
- * Returns
- *   time in s.
- \*-------------------------------------------------------------------------*/
-@@ -144,11 +145,7 @@ double timeout_gettime(void) {
- * Initializes module
- \*-------------------------------------------------------------------------*/
- int timeout_open(lua_State *L) {
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-     return 0;
- }
- 
-@@ -163,7 +160,7 @@ int timeout_meth_settimeout(lua_State *L, p_timeout tm) {
-     const char *mode = luaL_optstring(L, 3, "b");
-     switch (*mode) {
-         case 'b':
--            tm->block = t; 
-+            tm->block = t;
-             break;
-         case 'r': case 't':
-             tm->total = t;
-@@ -176,6 +173,16 @@ int timeout_meth_settimeout(lua_State *L, p_timeout tm) {
-     return 1;
- }
- 
-+/*-------------------------------------------------------------------------*\
-+* Gets timeout values for IO operations
-+* Lua Output: block, total
-+\*-------------------------------------------------------------------------*/
-+int timeout_meth_gettimeout(lua_State *L, p_timeout tm) {
-+    lua_pushnumber(L, tm->block);
-+    lua_pushnumber(L, tm->total);
-+    return 2;
-+}
-+
- /*=========================================================================*\
- * Test support functions
- \*=========================================================================*/
-diff --git a/src/timeout.h b/src/timeout.h
-index 6715ca7..af90231 100644
---- a/src/timeout.h
-+++ b/src/timeout.h
-@@ -22,6 +22,7 @@ p_timeout timeout_markstart(p_timeout tm);
- double timeout_getstart(p_timeout tm);
- double timeout_gettime(void);
- int timeout_meth_settimeout(lua_State *L, p_timeout tm);
-+int timeout_meth_gettimeout(lua_State *L, p_timeout tm);
- 
- #define timeout_iszero(tm)   ((tm)->block == 0.0)
- 
-diff --git a/src/tp.lua b/src/tp.lua
-index cbeff56..328cbab 100644
---- a/src/tp.lua
-+++ b/src/tp.lua
-@@ -74,7 +74,7 @@ function metat.__index:command(cmd, arg)
- end
- 
- function metat.__index:sink(snk, pat)
--    local chunk, err = c:receive(pat)
-+    local chunk, err = self.c:receive(pat)
-     return snk(chunk, err)
- end
- 
-diff --git a/src/udp.c b/src/udp.c
-index a9f2393..ec97252 100644
---- a/src/udp.c
-+++ b/src/udp.c
-@@ -7,6 +7,7 @@
- 
- #include "lua.h"
- #include "lauxlib.h"
-+#include "compat.h"
- 
- #include "auxiliar.h"
- #include "socket.h"
-@@ -26,6 +27,7 @@
- * Internal function prototypes
- \*=========================================================================*/
- static int global_create(lua_State *L);
-+static int global_create4(lua_State *L);
- static int global_create6(lua_State *L);
- static int meth_send(lua_State *L);
- static int meth_sendto(lua_State *L);
-@@ -34,6 +36,7 @@ static int meth_receivefrom(lua_State *L);
- static int meth_getfamily(lua_State *L);
- static int meth_getsockname(lua_State *L);
- static int meth_getpeername(lua_State *L);
-+static int meth_gettimeout(lua_State *L);
- static int meth_setsockname(lua_State *L);
- static int meth_setpeername(lua_State *L);
- static int meth_close(lua_State *L);
-@@ -64,6 +67,7 @@ static luaL_Reg udp_methods[] = {
-     {"setpeername", meth_setpeername},
-     {"setsockname", meth_setsockname},
-     {"settimeout",  meth_settimeout},
-+    {"gettimeout",  meth_gettimeout},
-     {NULL,          NULL}
- };
- 
-@@ -89,6 +93,10 @@ static t_opt optset[] = {
- 
- /* socket options for getoption */
- static t_opt optget[] = {
-+    {"dontroute",            opt_get_dontroute},
-+    {"broadcast",            opt_get_broadcast},
-+    {"reuseaddr",            opt_get_reuseaddr},
-+    {"reuseport",            opt_get_reuseport},
-     {"ip-multicast-if",      opt_get_ip_multicast_if},
-     {"ip-multicast-loop",    opt_get_ip_multicast_loop},
-     {"error",                opt_get_error},
-@@ -102,6 +110,7 @@ static t_opt optget[] = {
- /* functions in library namespace */
- static luaL_Reg func[] = {
-     {"udp", global_create},
-+    {"udp4", global_create4},
-     {"udp6", global_create6},
-     {NULL, NULL}
- };
-@@ -109,8 +118,7 @@ static luaL_Reg func[] = {
- /*-------------------------------------------------------------------------*\
- * Initializes module
- \*-------------------------------------------------------------------------*/
--int udp_open(lua_State *L)
--{
-+int udp_open(lua_State *L) {
-     /* create classes */
-     auxiliar_newclass(L, "udp{connected}", udp_methods);
-     auxiliar_newclass(L, "udp{unconnected}", udp_methods);
-@@ -120,18 +128,18 @@ int udp_open(lua_State *L)
-     auxiliar_add2group(L, "udp{connected}",   "select{able}");
-     auxiliar_add2group(L, "udp{unconnected}", "select{able}");
-     /* define library functions */
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
-     luaL_setfuncs(L, func, 0);
--#else
--    luaL_openlib(L, NULL, func, 0);
--#endif
-+    /* export default UDP size */
-+    lua_pushliteral(L, "_DATAGRAMSIZE");
-+    lua_pushinteger(L, UDP_DATAGRAMSIZE);
-+    lua_rawset(L, -3);
-     return 0;
- }
- 
- /*=========================================================================*\
- * Lua methods
- \*=========================================================================*/
--const char *udp_strerror(int err) {
-+static const char *udp_strerror(int err) {
-     /* a 'closed' error on an unconnected means the target address was not
-      * accepted by the transport layer */
-     if (err == IO_CLOSED) return "refused";
-@@ -182,7 +190,7 @@ static int meth_sendto(lua_State *L) {
-         return 2;
-     }
-     timeout_markstart(tm);
--    err = socket_sendto(&udp->sock, data, count, &sent, ai->ai_addr, 
-+    err = socket_sendto(&udp->sock, data, count, &sent, ai->ai_addr,
-         (socklen_t) ai->ai_addrlen, tm);
-     freeaddrinfo(ai);
-     if (err != IO_DONE) {
-@@ -199,71 +207,80 @@ static int meth_sendto(lua_State *L) {
- \*-------------------------------------------------------------------------*/
- static int meth_receive(lua_State *L) {
-     p_udp udp = (p_udp) auxiliar_checkgroup(L, "udp{any}", 1);
--    char buffer[UDP_DATAGRAMSIZE];
--    size_t got, count = (size_t) luaL_optnumber(L, 2, sizeof(buffer));
-+    char buf[UDP_DATAGRAMSIZE];
-+    size_t got, wanted = (size_t) luaL_optnumber(L, 2, sizeof(buf));
-+    char *dgram = wanted > sizeof(buf)? (char *) malloc(wanted): buf;
-     int err;
-     p_timeout tm = &udp->tm;
--    count = MIN(count, sizeof(buffer));
-     timeout_markstart(tm);
--    err = socket_recv(&udp->sock, buffer, count, &got, tm);
-+    if (!dgram) {
-+        lua_pushnil(L);
-+        lua_pushliteral(L, "out of memory");
-+        return 2;
-+    }
-+    err = socket_recv(&udp->sock, dgram, wanted, &got, tm);
-     /* Unlike TCP, recv() of zero is not closed, but a zero-length packet. */
--    if (err == IO_CLOSED)
--        err = IO_DONE;
--    if (err != IO_DONE) {
-+    if (err != IO_DONE && err != IO_CLOSED) {
-         lua_pushnil(L);
-         lua_pushstring(L, udp_strerror(err));
-+        if (wanted > sizeof(buf)) free(dgram);
-         return 2;
-     }
--    lua_pushlstring(L, buffer, got);
-+    lua_pushlstring(L, dgram, got);
-+    if (wanted > sizeof(buf)) free(dgram);
-     return 1;
- }
- 
- /*-------------------------------------------------------------------------*\
- * Receives data and sender from a UDP socket
- \*-------------------------------------------------------------------------*/
--static int meth_receivefrom(lua_State *L)
--{
-+static int meth_receivefrom(lua_State *L) {
-     p_udp udp = (p_udp) auxiliar_checkclass(L, "udp{unconnected}", 1);
--    char buffer[UDP_DATAGRAMSIZE];
--    size_t got, count = (size_t) luaL_optnumber(L, 2, sizeof(buffer));
--    int err;
--    p_timeout tm = &udp->tm;
-+    char buf[UDP_DATAGRAMSIZE];
-+    size_t got, wanted = (size_t) luaL_optnumber(L, 2, sizeof(buf));
-+    char *dgram = wanted > sizeof(buf)? (char *) malloc(wanted): buf;
-     struct sockaddr_storage addr;
-     socklen_t addr_len = sizeof(addr);
-     char addrstr[INET6_ADDRSTRLEN];
-     char portstr[6];
-+    int err;
-+    p_timeout tm = &udp->tm;
-     timeout_markstart(tm);
--    count = MIN(count, sizeof(buffer));
--    err = socket_recvfrom(&udp->sock, buffer, count, &got, (SA *) &addr, 
-+    if (!dgram) {
-+        lua_pushnil(L);
-+        lua_pushliteral(L, "out of memory");
-+        return 2;
-+    }
-+    err = socket_recvfrom(&udp->sock, dgram, wanted, &got, (SA *) &addr,
-             &addr_len, tm);
-     /* Unlike TCP, recv() of zero is not closed, but a zero-length packet. */
--    if (err == IO_CLOSED)
--        err = IO_DONE;
--    if (err != IO_DONE) {
-+    if (err != IO_DONE && err != IO_CLOSED) {
-         lua_pushnil(L);
-         lua_pushstring(L, udp_strerror(err));
-+        if (wanted > sizeof(buf)) free(dgram);
-         return 2;
-     }
--    err = getnameinfo((struct sockaddr *)&addr, addr_len, addrstr, 
-+    err = getnameinfo((struct sockaddr *)&addr, addr_len, addrstr,
-         INET6_ADDRSTRLEN, portstr, 6, NI_NUMERICHOST | NI_NUMERICSERV);
- 	if (err) {
-         lua_pushnil(L);
-         lua_pushstring(L, gai_strerror(err));
-+        if (wanted > sizeof(buf)) free(dgram);
-         return 2;
-     }
--    lua_pushlstring(L, buffer, got);
-+    lua_pushlstring(L, dgram, got);
-     lua_pushstring(L, addrstr);
-     lua_pushinteger(L, (int) strtol(portstr, (char **) NULL, 10));
-+    if (wanted > sizeof(buf)) free(dgram);
-     return 3;
- }
- 
- /*-------------------------------------------------------------------------*\
- * Returns family as string
- \*-------------------------------------------------------------------------*/
--static int meth_getfamily(lua_State *L)
--{
-+static int meth_getfamily(lua_State *L) {
-     p_udp udp = (p_udp) auxiliar_checkgroup(L, "udp{any}", 1);
--    if (udp->family == PF_INET6) {
-+    if (udp->family == AF_INET6) {
-         lua_pushliteral(L, "inet6");
-         return 1;
-     } else {
-@@ -332,6 +349,11 @@ static int meth_settimeout(lua_State *L) {
-     return timeout_meth_settimeout(L, &udp->tm);
- }
- 
-+static int meth_gettimeout(lua_State *L) {
-+    p_udp udp = (p_udp) auxiliar_checkgroup(L, "udp{any}", 1);
-+    return timeout_meth_gettimeout(L, &udp->tm);
-+}
-+
- /*-------------------------------------------------------------------------*\
- * Turns a master udp object into a client object.
- \*-------------------------------------------------------------------------*/
-@@ -348,7 +370,7 @@ static int meth_setpeername(lua_State *L) {
-     /* make sure we try to connect only to the same family */
-     connecthints.ai_family = udp->family;
-     if (connecting) {
--        err = inet_tryconnect(&udp->sock, &udp->family, address, 
-+        err = inet_tryconnect(&udp->sock, &udp->family, address,
-             port, tm, &connecthints);
-         if (err) {
-             lua_pushnil(L);
-@@ -362,7 +384,6 @@ static int meth_setpeername(lua_State *L) {
-         inet_trydisconnect(&udp->sock, udp->family, tm);
-         auxiliar_setclass(L, "udp{unconnected}", 1);
-     }
--    /* change class to connected or unconnected depending on address */
-     lua_pushnumber(L, 1);
-     return 1;
- }
-@@ -390,7 +411,7 @@ static int meth_setsockname(lua_State *L) {
-     bindhints.ai_socktype = SOCK_DGRAM;
-     bindhints.ai_family = udp->family;
-     bindhints.ai_flags = AI_PASSIVE;
--    err = inet_trybind(&udp->sock, address, port, &bindhints);
-+    err = inet_trybind(&udp->sock, &udp->family, address, port, &bindhints);
-     if (err) {
-         lua_pushnil(L);
-         lua_pushstring(L, err);
-@@ -407,32 +428,32 @@ static int meth_setsockname(lua_State *L) {
- * Creates a master udp object
- \*-------------------------------------------------------------------------*/
- static int udp_create(lua_State *L, int family) {
--    t_socket sock;
--    const char *err = inet_trycreate(&sock, family, SOCK_DGRAM);
--    /* try to allocate a system socket */
--    if (!err) {
--        /* allocate udp object */
--        p_udp udp = (p_udp) lua_newuserdata(L, sizeof(t_udp));
--        auxiliar_setclass(L, "udp{unconnected}", -1);
--        /* initialize remaining structure fields */
--        socket_setnonblocking(&sock);
--        if (family == PF_INET6) {
--            int yes = 1;
--            setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY,
--                (void *)&yes, sizeof(yes));
-+    /* allocate udp object */
-+    p_udp udp = (p_udp) lua_newuserdata(L, sizeof(t_udp));
-+    auxiliar_setclass(L, "udp{unconnected}", -1);
-+    /* if family is AF_UNSPEC, we leave the socket invalid and
-+     * store AF_UNSPEC into family. This will allow it to later be
-+     * replaced with an AF_INET6 or AF_INET socket upon first use. */
-+    udp->sock = SOCKET_INVALID;
-+    timeout_init(&udp->tm, -1, -1);
-+    udp->family = family;
-+    if (family != AF_UNSPEC) {
-+        const char *err = inet_trycreate(&udp->sock, family, SOCK_DGRAM, 0);
-+        if (err != NULL) {
-+            lua_pushnil(L);
-+            lua_pushstring(L, err);
-+            return 2;
-         }
--        udp->sock = sock;
--        timeout_init(&udp->tm, -1, -1);
--        udp->family = family;
--        return 1;
--    } else {
--        lua_pushnil(L);
--        lua_pushstring(L, err);
--        return 2;
-+        socket_setnonblocking(&udp->sock);
-     }
-+    return 1;
- }
- 
- static int global_create(lua_State *L) {
-+    return udp_create(L, AF_UNSPEC);
-+}
-+
-+static int global_create4(lua_State *L) {
-     return udp_create(L, AF_INET);
- }
- 
-diff --git a/src/udp.h b/src/udp.h
-index 2b831a5..be9b6a5 100644
---- a/src/udp.h
-+++ b/src/udp.h
-@@ -8,7 +8,7 @@
- * (AF_INET, SOCK_DGRAM).
- *
- * Two classes are defined: connected and unconnected. UDP objects are
--* originally unconnected. They can be "connected" to a given address 
-+* originally unconnected. They can be "connected" to a given address
- * with a call to the setpeername function. The same function can be used to
- * break the connection.
- \*=========================================================================*/
-@@ -17,7 +17,6 @@
- #include "timeout.h"
- #include "socket.h"
- 
--/* can't be larger than wsocket.c MAXCHUNK!!! */
- #define UDP_DATAGRAMSIZE 8192
- 
- typedef struct t_udp_ {
-diff --git a/src/unix.c b/src/unix.c
-index 91aaaf8..5bc3148 100644
---- a/src/unix.c
-+++ b/src/unix.c
-@@ -1,8 +1,8 @@
- /*=========================================================================*\
--* Unix domain socket 
-+* Unix domain socket
- * LuaSocket toolkit
- \*=========================================================================*/
--#include  
-+#include 
- 
- #include "lua.h"
- #include "lauxlib.h"
-@@ -11,7 +11,7 @@
- #include "socket.h"
- #include "options.h"
- #include "unix.h"
--#include  
-+#include 
- 
- /*=========================================================================*\
- * Internal function prototypes
-@@ -68,15 +68,6 @@ static t_opt optset[] = {
-     {NULL,          NULL}
- };
- 
--/* our socket creation function */
--/* this is an ad-hoc module that returns a single function 
-- * as such, do not include other functions in this array. */
--static luaL_Reg func[] = {
--    {"unix", global_create},
--    {NULL,          NULL}
--};
--
--
- /*-------------------------------------------------------------------------*\
- * Initializes module
- \*-------------------------------------------------------------------------*/
-@@ -89,15 +80,8 @@ int luaopen_socket_unix(lua_State *L) {
-     auxiliar_add2group(L, "unix{master}", "unix{any}");
-     auxiliar_add2group(L, "unix{client}", "unix{any}");
-     auxiliar_add2group(L, "unix{server}", "unix{any}");
--#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
--    lua_pushcfunction(L, global_create);
--    (void) func;
--#else
--    /* set function into socket namespace */
--    luaL_openlib(L, "socket", func, 0);
--    lua_pushcfunction(L, global_create);
--#endif
-     /* return the function instead of the 'socket' table */
-+    lua_pushcfunction(L, global_create);
-     return 1;
- }
- 
-@@ -147,7 +131,7 @@ static int meth_getfd(lua_State *L) {
- /* this is very dangerous, but can be handy for those that are brave enough */
- static int meth_setfd(lua_State *L) {
-     p_unix un = (p_unix) auxiliar_checkgroup(L, "unix{any}", 1);
--    un->sock = (t_socket) luaL_checknumber(L, 2); 
-+    un->sock = (t_socket) luaL_checknumber(L, 2);
-     return 0;
- }
- 
-@@ -158,8 +142,8 @@ static int meth_dirty(lua_State *L) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Waits for and returns a client object attempting connection to the 
--* server object 
-+* Waits for and returns a client object attempting connection to the
-+* server object
- \*-------------------------------------------------------------------------*/
- static int meth_accept(lua_State *L) {
-     p_unix server = (p_unix) auxiliar_checkclass(L, "unix{server}", 1);
-@@ -173,20 +157,20 @@ static int meth_accept(lua_State *L) {
-         /* initialize structure fields */
-         socket_setnonblocking(&sock);
-         clnt->sock = sock;
--        io_init(&clnt->io, (p_send)socket_send, (p_recv)socket_recv, 
-+        io_init(&clnt->io, (p_send)socket_send, (p_recv)socket_recv,
-                 (p_error) socket_ioerror, &clnt->sock);
-         timeout_init(&clnt->tm, -1, -1);
-         buffer_init(&clnt->buf, &clnt->io, &clnt->tm);
-         return 1;
-     } else {
--        lua_pushnil(L); 
-+        lua_pushnil(L);
-         lua_pushstring(L, socket_strerror(err));
-         return 2;
-     }
- }
- 
- /*-------------------------------------------------------------------------*\
--* Binds an object to an address 
-+* Binds an object to an address
- \*-------------------------------------------------------------------------*/
- static const char *unix_trybind(p_unix un, const char *path) {
-     struct sockaddr_un local;
-@@ -197,16 +181,16 @@ static const char *unix_trybind(p_unix un, const char *path) {
-     strcpy(local.sun_path, path);
-     local.sun_family = AF_UNIX;
- #ifdef UNIX_HAS_SUN_LEN
--    local.sun_len = sizeof(local.sun_family) + sizeof(local.sun_len) 
-+    local.sun_len = sizeof(local.sun_family) + sizeof(local.sun_len)
-         + len + 1;
-     err = socket_bind(&un->sock, (SA *) &local, local.sun_len);
- 
--#else 
--    err = socket_bind(&un->sock, (SA *) &local, 
-+#else
-+    err = socket_bind(&un->sock, (SA *) &local,
-             sizeof(local.sun_family) + len);
- #endif
-     if (err != IO_DONE) socket_destroy(&un->sock);
--    return socket_strerror(err); 
-+    return socket_strerror(err);
- }
- 
- static int meth_bind(lua_State *L) {
-@@ -236,11 +220,11 @@ static const char *unix_tryconnect(p_unix un, const char *path)
-     remote.sun_family = AF_UNIX;
-     timeout_markstart(&un->tm);
- #ifdef UNIX_HAS_SUN_LEN
--    remote.sun_len = sizeof(remote.sun_family) + sizeof(remote.sun_len) 
-+    remote.sun_len = sizeof(remote.sun_family) + sizeof(remote.sun_len)
-         + len + 1;
-     err = socket_connect(&un->sock, (SA *) &remote, remote.sun_len, &un->tm);
- #else
--    err = socket_connect(&un->sock, (SA *) &remote, 
-+    err = socket_connect(&un->sock, (SA *) &remote,
-             sizeof(remote.sun_family) + len, &un->tm);
- #endif
-     if (err != IO_DONE) socket_destroy(&un->sock);
-@@ -264,7 +248,7 @@ static int meth_connect(lua_State *L)
- }
- 
- /*-------------------------------------------------------------------------*\
--* Closes socket used by object 
-+* Closes socket used by object
- \*-------------------------------------------------------------------------*/
- static int meth_close(lua_State *L)
- {
-@@ -319,13 +303,13 @@ static int meth_settimeout(lua_State *L) {
- * Library functions
- \*=========================================================================*/
- /*-------------------------------------------------------------------------*\
--* Creates a master unix object 
-+* Creates a master unix object
- \*-------------------------------------------------------------------------*/
- static int global_create(lua_State *L) {
-     t_socket sock;
-     int err = socket_create(&sock, AF_UNIX, SOCK_STREAM, 0);
-     /* try to allocate a system socket */
--    if (err == IO_DONE) { 
-+    if (err == IO_DONE) {
-         /* allocate unix object */
-         p_unix un = (p_unix) lua_newuserdata(L, sizeof(t_unix));
-         /* set its type as master object */
-@@ -333,7 +317,7 @@ static int global_create(lua_State *L) {
-         /* initialize remaining structure fields */
-         socket_setnonblocking(&sock);
-         un->sock = sock;
--        io_init(&un->io, (p_send) socket_send, (p_recv) socket_recv, 
-+        io_init(&un->io, (p_send) socket_send, (p_recv) socket_recv,
-                 (p_error) socket_ioerror, &un->sock);
-         timeout_init(&un->tm, -1, -1);
-         buffer_init(&un->buf, &un->io, &un->tm);
-diff --git a/src/url.lua b/src/url.lua
-index 7809535..fbd93d1 100644
---- a/src/url.lua
-+++ b/src/url.lua
-@@ -219,6 +219,7 @@ end
- --   corresponding absolute url
- -----------------------------------------------------------------------------
- function _M.absolute(base_url, relative_url)
-+    local base_parsed
-     if base.type(base_url) == "table" then
-         base_parsed = base_url
-         base_url = _M.build(base_parsed)
-diff --git a/src/usocket.c b/src/usocket.c
-index 096ecd0..8adc573 100644
---- a/src/usocket.c
-+++ b/src/usocket.c
-@@ -4,12 +4,13 @@
- *
- * The code is now interrupt-safe.
- * The penalty of calling select to avoid busy-wait is only paid when
--* the I/O call fail in the first place. 
-+* the I/O call fail in the first place.
- \*=========================================================================*/
--#include  
-+#include 
- #include 
- 
- #include "socket.h"
-+#include "pierror.h"
- 
- /*-------------------------------------------------------------------------*\
- * Wait for readable/writable/connected socket with timeout
-@@ -72,7 +73,7 @@ int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
- 
- 
- /*-------------------------------------------------------------------------*\
--* Initializes module 
-+* Initializes module
- \*-------------------------------------------------------------------------*/
- int socket_open(void) {
-     /* instals a handler to ignore sigpipe or it will crash us */
-@@ -81,7 +82,7 @@ int socket_open(void) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* Close module 
-+* Close module
- \*-------------------------------------------------------------------------*/
- int socket_close(void) {
-     return 1;
-@@ -92,7 +93,6 @@ int socket_close(void) {
- \*-------------------------------------------------------------------------*/
- void socket_destroy(p_socket ps) {
-     if (*ps != SOCKET_INVALID) {
--        socket_setblocking(ps);
-         close(*ps);
-         *ps = SOCKET_INVALID;
-     }
-@@ -101,7 +101,7 @@ void socket_destroy(p_socket ps) {
- /*-------------------------------------------------------------------------*\
- * Select with timeout control
- \*-------------------------------------------------------------------------*/
--int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds, 
-+int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
-         p_timeout tm) {
-     int ret;
-     do {
-@@ -120,8 +120,8 @@ int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
- \*-------------------------------------------------------------------------*/
- int socket_create(p_socket ps, int domain, int type, int protocol) {
-     *ps = socket(domain, type, protocol);
--    if (*ps != SOCKET_INVALID) return IO_DONE; 
--    else return errno; 
-+    if (*ps != SOCKET_INVALID) return IO_DONE;
-+    else return errno;
- }
- 
- /*-------------------------------------------------------------------------*\
-@@ -130,29 +130,25 @@ int socket_create(p_socket ps, int domain, int type, int protocol) {
- int socket_bind(p_socket ps, SA *addr, socklen_t len) {
-     int err = IO_DONE;
-     socket_setblocking(ps);
--    if (bind(*ps, addr, len) < 0) err = errno; 
-+    if (bind(*ps, addr, len) < 0) err = errno;
-     socket_setnonblocking(ps);
-     return err;
- }
- 
- /*-------------------------------------------------------------------------*\
--* 
-+*
- \*-------------------------------------------------------------------------*/
- int socket_listen(p_socket ps, int backlog) {
--    int err = IO_DONE; 
--    socket_setblocking(ps);
--    if (listen(*ps, backlog)) err = errno; 
--    socket_setnonblocking(ps);
-+    int err = IO_DONE;
-+    if (listen(*ps, backlog)) err = errno;
-     return err;
- }
- 
- /*-------------------------------------------------------------------------*\
--* 
-+*
- \*-------------------------------------------------------------------------*/
- void socket_shutdown(p_socket ps, int how) {
--    socket_setblocking(ps);
-     shutdown(*ps, how);
--    socket_setnonblocking(ps);
- }
- 
- /*-------------------------------------------------------------------------*\
-@@ -166,7 +162,7 @@ int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
-     do if (connect(*ps, addr, len) == 0) return IO_DONE;
-     while ((err = errno) == EINTR);
-     /* if connection failed immediately, return error code */
--    if (err != EINPROGRESS && err != EAGAIN) return err; 
-+    if (err != EINPROGRESS && err != EAGAIN) return err;
-     /* zero timeout case optimization */
-     if (timeout_iszero(tm)) return IO_TIMEOUT;
-     /* wait until we have the result of the connection attempt or timeout */
-@@ -181,7 +177,7 @@ int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
- * Accept with timeout
- \*-------------------------------------------------------------------------*/
- int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, p_timeout tm) {
--    if (*ps == SOCKET_INVALID) return IO_CLOSED; 
-+    if (*ps == SOCKET_INVALID) return IO_CLOSED;
-     for ( ;; ) {
-         int err;
-         if ((*pa = accept(*ps, addr, len)) != SOCKET_INVALID) return IO_DONE;
-@@ -197,7 +193,7 @@ int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, p_timeout
- /*-------------------------------------------------------------------------*\
- * Send with timeout
- \*-------------------------------------------------------------------------*/
--int socket_send(p_socket ps, const char *data, size_t count, 
-+int socket_send(p_socket ps, const char *data, size_t count,
-         size_t *sent, p_timeout tm)
- {
-     int err;
-@@ -215,6 +211,8 @@ int socket_send(p_socket ps, const char *data, size_t count,
-         err = errno;
-         /* EPIPE means the connection was closed */
-         if (err == EPIPE) return IO_CLOSED;
-+        /* EPROTOTYPE means the connection is being closed (on Yosemite!)*/
-+        if (err == EPROTOTYPE) continue;
-         /* we call was interrupted, just try again */
-         if (err == EINTR) continue;
-         /* if failed fatal reason, report error */
-@@ -229,20 +227,21 @@ int socket_send(p_socket ps, const char *data, size_t count,
- /*-------------------------------------------------------------------------*\
- * Sendto with timeout
- \*-------------------------------------------------------------------------*/
--int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent, 
-+int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent,
-         SA *addr, socklen_t len, p_timeout tm)
- {
-     int err;
-     *sent = 0;
-     if (*ps == SOCKET_INVALID) return IO_CLOSED;
-     for ( ;; ) {
--        long put = (long) sendto(*ps, data, count, 0, addr, len);  
-+        long put = (long) sendto(*ps, data, count, 0, addr, len); 
-         if (put >= 0) {
-             *sent = put;
-             return IO_DONE;
-         }
-         err = errno;
-         if (err == EPIPE) return IO_CLOSED;
-+        if (err == EPROTOTYPE) continue;
-         if (err == EINTR) continue;
-         if (err != EAGAIN) return err;
-         if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
-@@ -266,8 +265,8 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
-         err = errno;
-         if (taken == 0) return IO_CLOSED;
-         if (err == EINTR) continue;
--        if (err != EAGAIN) return err; 
--        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 
-+        if (err != EAGAIN) return err;
-+        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
-     }
-     return IO_UNKNOWN;
- }
-@@ -275,7 +274,7 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
- /*-------------------------------------------------------------------------*\
- * Recvfrom with timeout
- \*-------------------------------------------------------------------------*/
--int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got, 
-+int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
-         SA *addr, socklen_t *len, p_timeout tm) {
-     int err;
-     *got = 0;
-@@ -289,8 +288,8 @@ int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
-         err = errno;
-         if (taken == 0) return IO_CLOSED;
-         if (err == EINTR) continue;
--        if (err != EAGAIN) return err; 
--        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 
-+        if (err != EAGAIN) return err;
-+        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
-     }
-     return IO_UNKNOWN;
- }
-@@ -303,7 +302,7 @@ int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
- * with send/recv replaced with write/read. We can't just use write/read
- * in the socket version, because behaviour when size is zero is different.
- \*-------------------------------------------------------------------------*/
--int socket_write(p_socket ps, const char *data, size_t count, 
-+int socket_write(p_socket ps, const char *data, size_t count,
-         size_t *sent, p_timeout tm)
- {
-     int err;
-@@ -321,6 +320,8 @@ int socket_write(p_socket ps, const char *data, size_t count,
-         err = errno;
-         /* EPIPE means the connection was closed */
-         if (err == EPIPE) return IO_CLOSED;
-+        /* EPROTOTYPE means the connection is being closed (on Yosemite!)*/
-+        if (err == EPROTOTYPE) continue;
-         /* we call was interrupted, just try again */
-         if (err == EINTR) continue;
-         /* if failed fatal reason, report error */
-@@ -349,8 +350,8 @@ int socket_read(p_socket ps, char *data, size_t count, size_t *got, p_timeout tm
-         err = errno;
-         if (taken == 0) return IO_CLOSED;
-         if (err == EINTR) continue;
--        if (err != EAGAIN) return err; 
--        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err; 
-+        if (err != EAGAIN) return err;
-+        if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
-     }
-     return IO_UNKNOWN;
- }
-@@ -374,7 +375,7 @@ void socket_setnonblocking(p_socket ps) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* DNS helpers 
-+* DNS helpers
- \*-------------------------------------------------------------------------*/
- int socket_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) {
-     *hp = gethostbyaddr(addr, len, AF_INET);
-@@ -399,7 +400,7 @@ int socket_gethostbyname(const char *addr, struct hostent **hp) {
- const char *socket_hoststrerror(int err) {
-     if (err <= 0) return io_strerror(err);
-     switch (err) {
--        case HOST_NOT_FOUND: return "host not found";
-+        case HOST_NOT_FOUND: return PIE_HOST_NOT_FOUND;
-         default: return hstrerror(err);
-     }
- }
-@@ -407,42 +408,43 @@ const char *socket_hoststrerror(int err) {
- const char *socket_strerror(int err) {
-     if (err <= 0) return io_strerror(err);
-     switch (err) {
--        case EADDRINUSE: return "address already in use";
--        case EISCONN: return "already connected";
--        case EACCES: return "permission denied";
--        case ECONNREFUSED: return "connection refused";
--        case ECONNABORTED: return "closed";
--        case ECONNRESET: return "closed";
--        case ETIMEDOUT: return "timeout";
--        default: return strerror(err);
-+        case EADDRINUSE: return PIE_ADDRINUSE;
-+        case EISCONN: return PIE_ISCONN;
-+        case EACCES: return PIE_ACCESS;
-+        case ECONNREFUSED: return PIE_CONNREFUSED;
-+        case ECONNABORTED: return PIE_CONNABORTED;
-+        case ECONNRESET: return PIE_CONNRESET;
-+        case ETIMEDOUT: return PIE_TIMEDOUT;
-+        default: {
-+            return strerror(err);
-+        }
-     }
- }
- 
- const char *socket_ioerror(p_socket ps, int err) {
-     (void) ps;
-     return socket_strerror(err);
--} 
-+}
- 
- const char *socket_gaistrerror(int err) {
--    if (err == 0) return NULL; 
-+    if (err == 0) return NULL;
-     switch (err) {
--        case EAI_AGAIN: return "temporary failure in name resolution";
--        case EAI_BADFLAGS: return "invalid value for ai_flags";
-+        case EAI_AGAIN: return PIE_AGAIN;
-+        case EAI_BADFLAGS: return PIE_BADFLAGS;
- #ifdef EAI_BADHINTS
--        case EAI_BADHINTS: return "invalid value for hints";
-+        case EAI_BADHINTS: return PIE_BADHINTS;
- #endif
--        case EAI_FAIL: return "non-recoverable failure in name resolution";
--        case EAI_FAMILY: return "ai_family not supported";
--        case EAI_MEMORY: return "memory allocation failure";
--        case EAI_NONAME: 
--            return "host or service not provided, or not known";
--        case EAI_OVERFLOW: return "argument buffer overflow";
-+        case EAI_FAIL: return PIE_FAIL;
-+        case EAI_FAMILY: return PIE_FAMILY;
-+        case EAI_MEMORY: return PIE_MEMORY;
-+        case EAI_NONAME: return PIE_NONAME;
-+        case EAI_OVERFLOW: return PIE_OVERFLOW;
- #ifdef EAI_PROTOCOL
--        case EAI_PROTOCOL: return "resolved protocol is unknown";
-+        case EAI_PROTOCOL: return PIE_PROTOCOL;
- #endif
--        case EAI_SERVICE: return "service not supported for socket type";
--        case EAI_SOCKTYPE: return "ai_socktype not supported";
--        case EAI_SYSTEM: return strerror(errno); 
-+        case EAI_SERVICE: return PIE_SERVICE;
-+        case EAI_SOCKTYPE: return PIE_SOCKTYPE;
-+        case EAI_SYSTEM: return strerror(errno);
-         default: return gai_strerror(err);
-     }
- }
-diff --git a/src/wsocket.c b/src/wsocket.c
-index b4a4384..8ecb0fc 100644
---- a/src/wsocket.c
-+++ b/src/wsocket.c
-@@ -3,33 +3,34 @@
- * LuaSocket toolkit
- *
- * The penalty of calling select to avoid busy-wait is only paid when
--* the I/O call fail in the first place. 
-+* the I/O call fail in the first place.
- \*=========================================================================*/
- #include 
- 
- #include "socket.h"
-+#include "pierror.h"
- 
- /* WinSock doesn't have a strerror... */
- static const char *wstrerror(int err);
- 
- /*-------------------------------------------------------------------------*\
--* Initializes module 
-+* Initializes module
- \*-------------------------------------------------------------------------*/
- int socket_open(void) {
-     WSADATA wsaData;
--    WORD wVersionRequested = MAKEWORD(2, 0); 
-+    WORD wVersionRequested = MAKEWORD(2, 0);
-     int err = WSAStartup(wVersionRequested, &wsaData );
-     if (err != 0) return 0;
-     if ((LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 0) &&
-         (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1)) {
-         WSACleanup();
--        return 0; 
-+        return 0;
-     }
-     return 1;
- }
- 
- /*-------------------------------------------------------------------------*\
--* Close module 
-+* Close module
- \*-------------------------------------------------------------------------*/
- int socket_close(void) {
-     WSACleanup();
-@@ -50,10 +51,10 @@ int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
-     struct timeval tv, *tp = NULL;
-     double t;
-     if (timeout_iszero(tm)) return IO_TIMEOUT;  /* optimize timeout == 0 case */
--    if (sw & WAITFD_R) { 
--        FD_ZERO(&rfds); 
-+    if (sw & WAITFD_R) {
-+        FD_ZERO(&rfds);
-         FD_SET(*ps, &rfds);
--        rp = &rfds; 
-+        rp = &rfds;
-     }
-     if (sw & WAITFD_W) { FD_ZERO(&wfds); FD_SET(*ps, &wfds); wp = &wfds; }
-     if (sw & WAITFD_C) { FD_ZERO(&efds); FD_SET(*ps, &efds); ep = &efds; }
-@@ -72,9 +73,9 @@ int socket_waitfd(p_socket ps, int sw, p_timeout tm) {
- /*-------------------------------------------------------------------------*\
- * Select with int timeout in ms
- \*-------------------------------------------------------------------------*/
--int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds, 
-+int socket_select(t_socket n, fd_set *rfds, fd_set *wfds, fd_set *efds,
-         p_timeout tm) {
--    struct timeval tv; 
-+    struct timeval tv;
-     double t = timeout_get(tm);
-     tv.tv_sec = (int) t;
-     tv.tv_usec = (int) ((t - tv.tv_sec) * 1.0e6);
-@@ -96,7 +97,7 @@ void socket_destroy(p_socket ps) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* 
-+*
- \*-------------------------------------------------------------------------*/
- void socket_shutdown(p_socket ps, int how) {
-     socket_setblocking(ps);
-@@ -134,10 +135,10 @@ int socket_connect(p_socket ps, SA *addr, socklen_t len, p_timeout tm) {
-         /* give windows time to set the error (yes, disgusting) */
-         Sleep(10);
-         /* find out why we failed */
--        getsockopt(*ps, SOL_SOCKET, SO_ERROR, (char *)&err, &len); 
-+        getsockopt(*ps, SOL_SOCKET, SO_ERROR, (char *)&err, &len);
-         /* we KNOW there was an error. if 'why' is 0, we will return
-         * "unknown error", but it's not really our fault */
--        return err > 0? err: IO_UNKNOWN; 
-+        return err > 0? err: IO_UNKNOWN;
-     } else return err;
- 
- }
-@@ -154,7 +155,7 @@ int socket_bind(p_socket ps, SA *addr, socklen_t len) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* 
-+*
- \*-------------------------------------------------------------------------*/
- int socket_listen(p_socket ps, int backlog) {
-     int err = IO_DONE;
-@@ -167,7 +168,7 @@ int socket_listen(p_socket ps, int backlog) {
- /*-------------------------------------------------------------------------*\
- * Accept with timeout
- \*-------------------------------------------------------------------------*/
--int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len, 
-+int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len,
-         p_timeout tm) {
-     if (*ps == SOCKET_INVALID) return IO_CLOSED;
-     for ( ;; ) {
-@@ -175,21 +176,21 @@ int socket_accept(p_socket ps, p_socket pa, SA *addr, socklen_t *len,
-         /* try to get client socket */
-         if ((*pa = accept(*ps, addr, len)) != SOCKET_INVALID) return IO_DONE;
-         /* find out why we failed */
--        err = WSAGetLastError(); 
-+        err = WSAGetLastError();
-         /* if we failed because there was no connectoin, keep trying */
-         if (err != WSAEWOULDBLOCK && err != WSAECONNABORTED) return err;
-         /* call select to avoid busy wait */
-         if ((err = socket_waitfd(ps, WAITFD_R, tm)) != IO_DONE) return err;
--    } 
-+    }
- }
- 
- /*-------------------------------------------------------------------------*\
- * Send with timeout
--* On windows, if you try to send 10MB, the OS will buffer EVERYTHING 
--* this can take an awful lot of time and we will end up blocked. 
-+* On windows, if you try to send 10MB, the OS will buffer EVERYTHING
-+* this can take an awful lot of time and we will end up blocked.
- * Therefore, whoever calls this function should not pass a huge buffer.
- \*-------------------------------------------------------------------------*/
--int socket_send(p_socket ps, const char *data, size_t count, 
-+int socket_send(p_socket ps, const char *data, size_t count,
-         size_t *sent, p_timeout tm)
- {
-     int err;
-@@ -206,18 +207,18 @@ int socket_send(p_socket ps, const char *data, size_t count,
-             return IO_DONE;
-         }
-         /* deal with failure */
--        err = WSAGetLastError(); 
-+        err = WSAGetLastError();
-         /* we can only proceed if there was no serious error */
-         if (err != WSAEWOULDBLOCK) return err;
-         /* avoid busy wait */
-         if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
--    } 
-+    }
- }
- 
- /*-------------------------------------------------------------------------*\
- * Sendto with timeout
- \*-------------------------------------------------------------------------*/
--int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent, 
-+int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent,
-         SA *addr, socklen_t len, p_timeout tm)
- {
-     int err;
-@@ -229,17 +230,17 @@ int socket_sendto(p_socket ps, const char *data, size_t count, size_t *sent,
-             *sent = put;
-             return IO_DONE;
-         }
--        err = WSAGetLastError(); 
-+        err = WSAGetLastError();
-         if (err != WSAEWOULDBLOCK) return err;
-         if ((err = socket_waitfd(ps, WAITFD_W, tm)) != IO_DONE) return err;
--    } 
-+    }
- }
- 
- /*-------------------------------------------------------------------------*\
- * Receive with timeout
- \*-------------------------------------------------------------------------*/
--int socket_recv(p_socket ps, char *data, size_t count, size_t *got, 
--        p_timeout tm) 
-+int socket_recv(p_socket ps, char *data, size_t count, size_t *got,
-+        p_timeout tm)
- {
-     int err, prev = IO_DONE;
-     *got = 0;
-@@ -252,9 +253,9 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got,
-         }
-         if (taken == 0) return IO_CLOSED;
-         err = WSAGetLastError();
--        /* On UDP, a connreset simply means the previous send failed. 
--         * So we try again. 
--         * On TCP, it means our socket is now useless, so the error passes. 
-+        /* On UDP, a connreset simply means the previous send failed.
-+         * So we try again.
-+         * On TCP, it means our socket is now useless, so the error passes.
-          * (We will loop again, exiting because the same error will happen) */
-         if (err != WSAEWOULDBLOCK) {
-             if (err != WSAECONNRESET || prev == WSAECONNRESET) return err;
-@@ -267,8 +268,8 @@ int socket_recv(p_socket ps, char *data, size_t count, size_t *got,
- /*-------------------------------------------------------------------------*\
- * Recvfrom with timeout
- \*-------------------------------------------------------------------------*/
--int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got, 
--        SA *addr, socklen_t *len, p_timeout tm) 
-+int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
-+        SA *addr, socklen_t *len, p_timeout tm)
- {
-     int err, prev = IO_DONE;
-     *got = 0;
-@@ -281,8 +282,8 @@ int socket_recvfrom(p_socket ps, char *data, size_t count, size_t *got,
-         }
-         if (taken == 0) return IO_CLOSED;
-         err = WSAGetLastError();
--        /* On UDP, a connreset simply means the previous send failed. 
--         * So we try again. 
-+        /* On UDP, a connreset simply means the previous send failed.
-+         * So we try again.
-          * On TCP, it means our socket is now useless, so the error passes.
-          * (We will loop again, exiting because the same error will happen) */
-         if (err != WSAEWOULDBLOCK) {
-@@ -310,7 +311,7 @@ void socket_setnonblocking(p_socket ps) {
- }
- 
- /*-------------------------------------------------------------------------*\
--* DNS helpers 
-+* DNS helpers
- \*-------------------------------------------------------------------------*/
- int socket_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) {
-     *hp = gethostbyaddr(addr, len, AF_INET);
-@@ -330,21 +331,21 @@ int socket_gethostbyname(const char *addr, struct hostent **hp) {
- const char *socket_hoststrerror(int err) {
-     if (err <= 0) return io_strerror(err);
-     switch (err) {
--        case WSAHOST_NOT_FOUND: return "host not found";
--        default: return wstrerror(err); 
-+        case WSAHOST_NOT_FOUND: return PIE_HOST_NOT_FOUND;
-+        default: return wstrerror(err);
-     }
- }
- 
- const char *socket_strerror(int err) {
-     if (err <= 0) return io_strerror(err);
-     switch (err) {
--        case WSAEADDRINUSE: return "address already in use";
--        case WSAECONNREFUSED: return "connection refused";
--        case WSAEISCONN: return "already connected";
--        case WSAEACCES: return "permission denied";
--        case WSAECONNABORTED: return "closed";
--        case WSAECONNRESET: return "closed";
--        case WSAETIMEDOUT: return "timeout";
-+        case WSAEADDRINUSE: return PIE_ADDRINUSE;
-+        case WSAECONNREFUSED : return PIE_CONNREFUSED;
-+        case WSAEISCONN: return PIE_ISCONN;
-+        case WSAEACCES: return PIE_ACCESS;
-+        case WSAECONNABORTED: return PIE_CONNABORTED;
-+        case WSAECONNRESET: return PIE_CONNRESET;
-+        case WSAETIMEDOUT: return PIE_TIMEDOUT;
-         default: return wstrerror(err);
-     }
- }
-@@ -357,7 +358,7 @@ const char *socket_ioerror(p_socket ps, int err) {
- static const char *wstrerror(int err) {
-     switch (err) {
-         case WSAEINTR: return "Interrupted function call";
--        case WSAEACCES: return "Permission denied";
-+        case WSAEACCES: return PIE_ACCESS; // "Permission denied";
-         case WSAEFAULT: return "Bad address";
-         case WSAEINVAL: return "Invalid argument";
-         case WSAEMFILE: return "Too many open files";
-@@ -370,63 +371,61 @@ static const char *wstrerror(int err) {
-         case WSAEPROTOTYPE: return "Protocol wrong type for socket";
-         case WSAENOPROTOOPT: return "Bad protocol option";
-         case WSAEPROTONOSUPPORT: return "Protocol not supported";
--        case WSAESOCKTNOSUPPORT: return "Socket type not supported";
-+        case WSAESOCKTNOSUPPORT: return PIE_SOCKTYPE; // "Socket type not supported";
-         case WSAEOPNOTSUPP: return "Operation not supported";
-         case WSAEPFNOSUPPORT: return "Protocol family not supported";
--        case WSAEAFNOSUPPORT: 
--            return "Address family not supported by protocol family"; 
--        case WSAEADDRINUSE: return "Address already in use";
-+        case WSAEAFNOSUPPORT: return PIE_FAMILY; // "Address family not supported by protocol family";
-+        case WSAEADDRINUSE: return PIE_ADDRINUSE; // "Address already in use";
-         case WSAEADDRNOTAVAIL: return "Cannot assign requested address";
-         case WSAENETDOWN: return "Network is down";
-         case WSAENETUNREACH: return "Network is unreachable";
-         case WSAENETRESET: return "Network dropped connection on reset";
-         case WSAECONNABORTED: return "Software caused connection abort";
--        case WSAECONNRESET: return "Connection reset by peer";
-+        case WSAECONNRESET: return PIE_CONNRESET; // "Connection reset by peer";
-         case WSAENOBUFS: return "No buffer space available";
--        case WSAEISCONN: return "Socket is already connected";
-+        case WSAEISCONN: return PIE_ISCONN; // "Socket is already connected";
-         case WSAENOTCONN: return "Socket is not connected";
-         case WSAESHUTDOWN: return "Cannot send after socket shutdown";
--        case WSAETIMEDOUT: return "Connection timed out";
--        case WSAECONNREFUSED: return "Connection refused";
-+        case WSAETIMEDOUT: return PIE_TIMEDOUT; // "Connection timed out";
-+        case WSAECONNREFUSED: return PIE_CONNREFUSED; // "Connection refused";
-         case WSAEHOSTDOWN: return "Host is down";
-         case WSAEHOSTUNREACH: return "No route to host";
-         case WSAEPROCLIM: return "Too many processes";
-         case WSASYSNOTREADY: return "Network subsystem is unavailable";
-         case WSAVERNOTSUPPORTED: return "Winsock.dll version out of range";
--        case WSANOTINITIALISED: 
-+        case WSANOTINITIALISED:
-             return "Successful WSAStartup not yet performed";
-         case WSAEDISCON: return "Graceful shutdown in progress";
--        case WSAHOST_NOT_FOUND: return "Host not found";
-+        case WSAHOST_NOT_FOUND: return PIE_HOST_NOT_FOUND; // "Host not found";
-         case WSATRY_AGAIN: return "Nonauthoritative host not found";
--        case WSANO_RECOVERY: return "Nonrecoverable name lookup error"; 
-+        case WSANO_RECOVERY: return PIE_FAIL; // "Nonrecoverable name lookup error";
-         case WSANO_DATA: return "Valid name, no data record of requested type";
-         default: return "Unknown error";
-     }
- }
- 
- const char *socket_gaistrerror(int err) {
--    if (err == 0) return NULL; 
-+    if (err == 0) return NULL;
-     switch (err) {
--        case EAI_AGAIN: return "temporary failure in name resolution";
--        case EAI_BADFLAGS: return "invalid value for ai_flags";
-+        case EAI_AGAIN: return PIE_AGAIN;
-+        case EAI_BADFLAGS: return PIE_BADFLAGS;
- #ifdef EAI_BADHINTS
--        case EAI_BADHINTS: return "invalid value for hints";
-+        case EAI_BADHINTS: return PIE_BADHINTS;
- #endif
--        case EAI_FAIL: return "non-recoverable failure in name resolution";
--        case EAI_FAMILY: return "ai_family not supported";
--        case EAI_MEMORY: return "memory allocation failure";
--        case EAI_NONAME: 
--            return "host or service not provided, or not known";
-+        case EAI_FAIL: return PIE_FAIL;
-+        case EAI_FAMILY: return PIE_FAMILY;
-+        case EAI_MEMORY: return PIE_MEMORY;
-+        case EAI_NONAME: return PIE_NONAME;
- #ifdef EAI_OVERFLOW
--        case EAI_OVERFLOW: return "argument buffer overflow";
-+        case EAI_OVERFLOW: return PIE_OVERFLOW;
- #endif
- #ifdef EAI_PROTOCOL
--        case EAI_PROTOCOL: return "resolved protocol is unknown";
-+        case EAI_PROTOCOL: return PIE_PROTOCOL;
- #endif
--        case EAI_SERVICE: return "service not supported for socket type";
--        case EAI_SOCKTYPE: return "ai_socktype not supported";
-+        case EAI_SERVICE: return PIE_SERVICE;
-+        case EAI_SOCKTYPE: return PIE_SOCKTYPE;
- #ifdef EAI_SYSTEM
--        case EAI_SYSTEM: return strerror(errno); 
-+        case EAI_SYSTEM: return strerror(errno);
- #endif
-         default: return gai_strerror(err);
-     }
-diff --git a/test/auth/.htaccess b/test/auth/.htaccess
-new file mode 100644
-index 0000000..bb2794a
---- /dev/null
-+++ b/test/auth/.htaccess
-@@ -0,0 +1,4 @@
-+AuthName "test-auth"
-+    AuthType Basic
-+    AuthUserFile /Users/diego/impa/luasocket/test/auth/.htpasswd
-+    Require valid-user
-diff --git a/test/auth/.htpasswd b/test/auth/.htpasswd
-index fd9002b..cfb2603 100644
---- a/test/auth/.htpasswd
-+++ b/test/auth/.htpasswd
-@@ -1 +1 @@
--luasocket:l8n2npozPB.sQ
-+luasocket:$apr1$47u2O.Me$.m/5BWAtt7GVoxsouIPBR1
-diff --git a/test/excepttest.lua b/test/excepttest.lua
-index ce9f197..80c9cb8 100644
---- a/test/excepttest.lua
-+++ b/test/excepttest.lua
-@@ -1,6 +1,30 @@
- local socket = require("socket")
--try = socket.newtry(function()
--    print("finalized!!!")
-+
-+local finalizer_called
-+
-+local func = socket.protect(function(err, ...)
-+    local try = socket.newtry(function()
-+        finalizer_called = true
-+    end)
-+
-+    if err then
-+        return error(err, 0)
-+    else
-+        return try(...)
-+    end
- end)
--try = socket.protect(try)
--print(try(nil, "it works"))
-+
-+local ret1, ret2, ret3 = func(false, 1, 2, 3)
-+assert(not finalizer_called, "unexpected finalizer call")
-+assert(ret1 == 1 and ret2 == 2 and ret3 == 3, "incorrect return values")
-+
-+ret1, ret2, ret3 = func(false, false, "error message")
-+assert(finalizer_called, "finalizer not called")
-+assert(ret1 == nil and ret2 == "error message" and ret3 == nil, "incorrect return values")
-+
-+local err = {key = "value"}
-+ret1, ret2 = pcall(func, err)
-+assert(not ret1, "error not rethrown")
-+assert(ret2 == err, "incorrect error rethrown")
-+
-+print("OK")
-diff --git a/test/httptest.lua b/test/httptest.lua
-index d5fbb37..63ff921 100644
---- a/test/httptest.lua
-+++ b/test/httptest.lua
-@@ -1,4 +1,4 @@
---- needs Alias from /home/c/diego/tec/luasocket/test to 
-+-- needs Alias from /home/c/diego/tec/luasocket/test to
- -- "/luasocket-test" and "/luasocket-test/"
- -- needs ScriptAlias from /home/c/diego/tec/luasocket/test/cgi
- -- to "/luasocket-test-cgi" and "/luasocket-test-cgi/"
-@@ -36,22 +36,22 @@ index = readfile(index_file)
- local check_result = function(response, expect, ignore)
-     for i,v in pairs(response) do
-         if not ignore[i] then
--            if v ~= expect[i] then 
-+            if v ~= expect[i] then
-                 local f = io.open("err", "w")
-                 f:write(tostring(v), "\n\n versus\n\n", tostring(expect[i]))
-                 f:close()
--                fail(i .. " differs!") 
-+                fail(i .. " differs!")
-             end
-         end
-     end
-     for i,v in pairs(expect) do
-         if not ignore[i] then
--            if v ~= response[i] then 
-+            if v ~= response[i] then
-                 local f = io.open("err", "w")
-                 f:write(tostring(response[i]), "\n\n versus\n\n", tostring(v))
-                 v = string.sub(type(v) == "string" and v or "", 1, 70)
-                 f:close()
--                fail(i .. " differs!") 
-+                fail(i .. " differs!")
-             end
-         end
-     end
-@@ -61,10 +61,10 @@ end
- local check_request = function(request, expect, ignore)
-     local t
-     if not request.sink then request.sink, t = ltn12.sink.table() end
--    request.source = request.source or 
-+    request.source = request.source or
-         (request.body and ltn12.source.string(request.body))
-     local response = {}
--    response.code, response.headers, response.status = 
-+    response.code, response.headers, response.status =
-         socket.skip(1, http.request(request))
-     if t and #t > 0 then response.body = table.concat(t) end
-     check_result(response, expect, ignore)
-@@ -82,7 +82,7 @@ else fail(back.query) end
- ------------------------------------------------------------------------
- io.write("testing query string correctness: ")
- forth = "this+is+the+query+string"
--back = http.request("http://" .. host .. cgiprefix .. 
-+back = http.request("http://" .. host .. cgiprefix ..
-     "/query-string?" .. forth)
- if similar(back, forth) then print("ok")
- else fail("failed!") end
-@@ -120,10 +120,10 @@ check_request(request, expect, ignore)
- ------------------------------------------------------------------------
- io.write("testing invalid url: ")
- local r, e = http.request{url = host .. prefix}
--assert(r == nil and e == "invalid host ''") 
-+assert(r == nil and e == "invalid host ''")
- r, re = http.request(host .. prefix)
--assert(r == nil and e == re, tostring(r) ..", " .. tostring(re) .. 
--    " vs " .. tostring(e)) 
-+assert(r == nil and e == re, tostring(r) ..", " .. tostring(re) ..
-+    " vs " .. tostring(e))
- print("ok")
- 
- io.write("testing invalid empty port: ")
-@@ -212,7 +212,7 @@ os.remove(index_file .. "-back")
- io.write("testing ltn12.(sink|source).chain and mime.(encode|decode): ")
- 
- local function b64length(len)
--    local a = math.ceil(len/3)*4 
-+    local a = math.ceil(len/3)*4
-     local l = math.ceil(a/76)
-     return a + l*2
- end
-@@ -313,7 +313,7 @@ ignore = {
-     headers = 1
- }
- check_request(request, expect, ignore)
--    
-+
- ------------------------------------------------------------------------
- io.write("testing document not found: ")
- request = {
-@@ -429,9 +429,9 @@ print("ok")
- io.write("testing host not found: ")
- local c, e = socket.connect("example.invalid", 80)
- local r, re = http.request{url = "http://example.invalid/does/not/exist"}
--assert(r == nil and e == re, tostring(r) .. " " .. tostring(re)) 
-+assert(r == nil and e == re, tostring(r) .. " " .. tostring(re))
- r, re = http.request("http://example.invalid/does/not/exist")
--assert(r == nil and e == re) 
-+assert(r == nil and e == re)
- print("ok")
- 
- ------------------------------------------------------------------------
-diff --git a/test/ltn12test.lua b/test/ltn12test.lua
-index 74a45e8..e3f85fb 100644
---- a/test/ltn12test.lua
-+++ b/test/ltn12test.lua
-@@ -192,6 +192,21 @@ assert(filter(nil, 1), "filter not empty")
- print("ok")
- 
- --------------------------------
-+io.write("testing source.chain (with several filters): ")
-+local function double(x) -- filter turning "ABC" into "AABBCC"
-+    if not x then return end
-+    local b={}
-+    for k in x:gmatch'.' do table.insert(b, k..k) end
-+    return table.concat(b)
-+end
-+source = ltn12.source.string(s)
-+source = ltn12.source.chain(source, double, double, double)
-+sink, t = ltn12.sink.table()
-+assert(ltn12.pump.all(source, sink), "returned error")
-+assert(table.concat(t) == double(double(double(s))), "mismatch")
-+print("ok")
-+
-+--------------------------------
- io.write("testing source.chain (with split) and sink.chain (with merge): ")
- source = ltn12.source.string(s)
- filter = split(5)
-@@ -206,6 +221,15 @@ assert(filter2(nil, 1), "filter2 not empty")
- print("ok")
- 
- --------------------------------
-+io.write("testing sink.chain (with several filters): ")
-+source = ltn12.source.string(s)
-+sink, t = ltn12.sink.table()
-+sink = ltn12.sink.chain(double, double, double, sink)
-+assert(ltn12.pump.all(source, sink), "returned error")
-+assert(table.concat(t) == double(double(double(s))), "mismatch")
-+print("ok")
-+
-+--------------------------------
- io.write("testing filter.chain (and sink.chain, with split, merge): ")
- source = ltn12.source.string(s)
- filter = split(5)
-@@ -272,3 +296,4 @@ assert(filter3(nil, 1), "filter3 not empty")
- assert(filter4(nil, 1), "filter4 not empty")
- assert(filter5(nil, 1), "filter5 not empty")
- print("ok")
-+
-diff --git a/test/testclnt.lua b/test/testclnt.lua
-index 315783b..170e187 100644
---- a/test/testclnt.lua
-+++ b/test/testclnt.lua
-@@ -8,7 +8,7 @@ function printf(...)
- end
- 
- function pass(...)
--    printf(...) 
-+    printf(...)
-     io.stderr:write("\n")
- end
- 
-@@ -45,30 +45,30 @@ function check_timeout(tm, sl, elapsed, err, opp, mode, alldone)
-             if not err then warn("must be buffered")
-             elseif err == "timeout" then pass("proper timeout")
-             else fail("unexpected error '%s'", err) end
--        else 
--            if err ~= "timeout" then fail("should have timed out") 
-+        else
-+            if err ~= "timeout" then fail("should have timed out")
-             else pass("proper timeout") end
-         end
-     else
-         if mode == "total" then
--            if elapsed > tm then 
-+            if elapsed > tm then
-                 if err ~= "timeout" then fail("should have timed out")
-                 else pass("proper timeout") end
-             elseif elapsed < tm then
--                if err then fail(err) 
-+                if err then fail(err)
-                 else pass("ok") end
--            else 
--                if alldone then 
--                    if err then fail("unexpected error '%s'", err) 
-+            else
-+                if alldone then
-+                    if err then fail("unexpected error '%s'", err)
-                     else pass("ok") end
-                 else
--                    if err ~= "timeout" then fail(err) 
-+                    if err ~= "timeout" then fail(err)
-                     else pass("proper timeoutk") end
-                 end
-             end
--        else 
--            if err then fail(err) 
--            else pass("ok") end 
-+        else
-+            if err then fail(err)
-+            else pass("ok") end
-         end
-     end
- end
-@@ -104,8 +104,8 @@ control:setoption("tcp-nodelay", true)
- ------------------------------------------------------------------------
- function test_methods(sock, methods)
-     for _, v in pairs(methods) do
--        if type(sock[v]) ~= "function" then 
--            fail(sock.class .. " method '" .. v .. "' not registered") 
-+        if type(sock[v]) ~= "function" then
-+            fail(sock.class .. " method '" .. v .. "' not registered")
-         end
-     end
-     pass(sock.class .. " methods are ok")
-@@ -121,7 +121,7 @@ function test_mixed(len)
-     local p3 = "raw " .. string.rep("z", inter) .. "bytes"
-     local p4 = "end" .. string.rep("w", inter) .. "bytes"
-     local bp1, bp2, bp3, bp4
--remote (string.format("str = data:receive(%d)", 
-+remote (string.format("str = data:receive(%d)",
-             string.len(p1)+string.len(p2)+string.len(p3)+string.len(p4)))
-     sent, err = data:send(p1..p2..p3..p4)
-     if err then fail(err) end
-@@ -166,7 +166,7 @@ function test_rawline(len)
-     io.stderr:write("length " .. len .. ": ")
-     local str, str10, back, err
-     str = string.rep(string.char(47), math.mod(len, 10))
--    str10 = string.rep(string.char(120,21,77,4,5,0,7,36,44,100), 
-+    str10 = string.rep(string.char(120,21,77,4,5,0,7,36,44,100),
-             math.floor(len/10))
-     str = str .. str10
- remote "str = data:receive()"
-@@ -216,7 +216,7 @@ function test_totaltimeoutreceive(len, tm, sl)
-     data:settimeout(tm, "total")
- local t = socket.gettime()
-     str, err, partial, elapsed = data:receive(2*len)
--    check_timeout(tm, sl, elapsed, err, "receive", "total", 
-+    check_timeout(tm, sl, elapsed, err, "receive", "total",
-         string.len(str or partial) == 2*len)
- end
- 
-@@ -236,7 +236,7 @@ function test_totaltimeoutsend(len, tm, sl)
-     data:settimeout(tm, "total")
-     str = string.rep("a", 2*len)
-     total, err, partial, elapsed = data:send(str)
--    check_timeout(tm, sl, elapsed, err, "send", "total", 
-+    check_timeout(tm, sl, elapsed, err, "send", "total",
-         total == 2*len)
- end
- 
-@@ -256,7 +256,7 @@ function test_blockingtimeoutreceive(len, tm, sl)
-     ]], 2*tm, len, sl, sl))
-     data:settimeout(tm)
-     str, err, partial, elapsed = data:receive(2*len)
--    check_timeout(tm, sl, elapsed, err, "receive", "blocking", 
-+    check_timeout(tm, sl, elapsed, err, "receive", "blocking",
-         string.len(str or partial) == 2*len)
- end
- 
-@@ -290,10 +290,10 @@ function empty_connect()
-         data = server:accept()
-     ]]
-     data, err = socket.connect("", port)
--    if not data then 
-+    if not data then
-         pass("ok")
-         data = socket.connect(host, port)
--    else 
-+    else
-         pass("gethostbyname returns localhost on empty string...")
-     end
- end
-@@ -304,15 +304,20 @@ function isclosed(c)
- end
- 
- function active_close()
--    reconnect()
--    if isclosed(data) then fail("should not be closed") end
--    data:close()
--    if not isclosed(data) then fail("should be closed") end
--    data = nil
--    local udp = socket.udp()
-+    local tcp = socket.tcp4()
-+    if isclosed(tcp) then fail("should not be closed") end
-+    tcp:close()
-+    if not isclosed(tcp) then fail("should be closed") end
-+    tcp = socket.tcp()
-+    if not isclosed(tcp) then fail("should be closed") end
-+    tcp = nil
-+    local udp = socket.udp4()
-     if isclosed(udp) then fail("should not be closed") end
-     udp:close()
-     if not isclosed(udp) then fail("should be closed") end
-+    udp = socket.udp()
-+    if not isclosed(udp) then fail("should be closed") end
-+    udp = nil
-     pass("ok")
- end
- 
-@@ -327,7 +332,7 @@ function test_closed()
-         data:close()
-         data = nil
-     ]], str))
--    -- try to get a line 
-+    -- try to get a line
-     back, err, partial = data:receive()
-     if not err then fail("should have gotten 'closed'.")
-     elseif err ~= "closed" then fail("got '"..err.."' instead of 'closed'.")
-@@ -340,25 +345,25 @@ function test_closed()
-         data = nil
-     ]]
-     total, err, partial = data:send(string.rep("ugauga", 100000))
--    if not err then 
-+    if not err then
-         pass("failed: output buffer is at least %d bytes long!", total)
--    elseif err ~= "closed" then 
-+    elseif err ~= "closed" then
-         fail("got '"..err.."' instead of 'closed'.")
--    else 
--        pass("graceful 'closed' received after %d bytes were sent", partial) 
-+    else
-+        pass("graceful 'closed' received after %d bytes were sent", partial)
-     end
- end
- 
- ------------------------------------------------------------------------
- function test_selectbugs()
-     local r, s, e = socket.select(nil, nil, 0.1)
--    assert(type(r) == "table" and type(s) == "table" and 
-+    assert(type(r) == "table" and type(s) == "table" and
-         (e == "timeout" or e == "error"))
-     pass("both nil: ok")
-     local udp = socket.udp()
-     udp:close()
-     r, s, e = socket.select({ udp }, { udp }, 0.1)
--    assert(type(r) == "table" and type(s) == "table" and 
-+    assert(type(r) == "table" and type(s) == "table" and
-         (e == "timeout" or e == "error"))
-     pass("closed sockets: ok")
-     e = pcall(socket.select, "wrong", 1, 0.1)
-@@ -368,7 +373,7 @@ function test_selectbugs()
-     pass("invalid input: ok")
-     local toomany = {}
-     for i = 1, socket._SETSIZE+1 do
--        toomany[#toomany+1] = socket.udp()
-+        toomany[#toomany+1] = socket.udp4()
-     end
-     if #toomany > socket._SETSIZE then
-         local e = pcall(socket.select, toomany, nil, 0.1)
-@@ -389,7 +394,7 @@ function accept_timeout()
-     local t = socket.gettime()
-     s:settimeout(1)
-     local c, e = s:accept()
--    assert(not c, "should not accept") 
-+    assert(not c, "should not accept")
-     assert(e == "timeout", string.format("wrong error message (%s)", e))
-     t = socket.gettime() - t
-     assert(t < 2, string.format("took to long to give up (%gs)", t))
-@@ -407,9 +412,9 @@ function connect_timeout()
-     local t = socket.gettime()
-     local r, e = c:connect("10.0.0.1", 81)
-     assert(not r, "should not connect")
--    assert(socket.gettime() - t < 2, "took too long to give up.") 
-+    assert(socket.gettime() - t < 2, "took too long to give up.")
-     c:close()
--    pass("ok") 
-+    pass("ok")
- end
- 
- ------------------------------------------------------------------------
-@@ -447,16 +452,14 @@ end
- 
- ------------------------------------------------------------------------
- function rebind_test()
--    --local c ,c1 = socket.bind("localhost", 0)
-    local c ,c1 = socket.bind("127.0.0.1", 0)
-     if not c then pass ("failed to bind! " .. tostring(c) .. ' ' .. tostring(c1))  return end
- 	assert(c,c1)
-- 
-     local i, p = c:getsockname()
-     local s, e = socket.tcp()
-     assert(s, e)
-     s:setoption("reuseaddr", false)
--    r, e = s:bind("localhost", p)
-+    r, e = s:bind(i, p)
-     assert(not r, "managed to rebind!")
-     assert(e)
-     pass("ok")
-@@ -476,9 +479,9 @@ function getstats_test()
-         data:receive(c)
-         t = t + c
-         local r, s, a = data:getstats()
--        assert(r == t, "received count failed" .. tostring(r) 
-+        assert(r == t, "received count failed" .. tostring(r)
-             .. "/" .. tostring(t))
--        assert(s == t, "sent count failed" .. tostring(s) 
-+        assert(s == t, "sent count failed" .. tostring(s)
-             .. "/" .. tostring(t))
-     end
-     pass("ok")
-@@ -486,7 +489,7 @@ end
- 
- 
- ------------------------------------------------------------------------
--function test_nonblocking(size) 
-+function test_nonblocking(size)
-     reconnect()
-     printf("testing "  .. 2*size .. " bytes: ")
- remote(string.format([[
-@@ -545,7 +548,7 @@ function test_readafterclose()
-         data:close()
-         data = nil
-     ]]))
--    data:close() 
-+    data:close()
-     back, err, partial = data:receive("*a")
-     assert(back == nil and err == "closed", "should have returned 'closed'")
-     pass("ok")
-@@ -555,7 +558,7 @@ function test_readafterclose()
-         data:close()
-         data = nil
-     ]]))
--    data:close() 
-+    data:close()
-     back, err, partial = data:receive()
-     assert(back == nil and err == "closed", "should have returned 'closed'")
-     pass("ok")
-@@ -565,7 +568,7 @@ function test_readafterclose()
-         data:close()
-         data = nil
-     ]]))
--    data:close() 
-+    data:close()
-     back, err, partial = data:receive(1)
-     assert(back == nil and err == "closed", "should have returned 'closed'")
-     pass("ok")
-@@ -575,7 +578,7 @@ function test_readafterclose()
-         data:close()
-         data = nil
-     ]]))
--    data:close() 
-+    data:close()
-     back, err, partial = data:receive(0)
-     assert(back == nil and err == "closed", "should have returned 'closed'")
-     pass("ok")
-@@ -590,10 +593,10 @@ function test_writeafterclose()
-         data = nil
-     ]]))
-     local sent, err, errsent
--    while not err do 
-+    while not err do
-         sent, err, errsent, time = data:send(str)
-     end
--    assert(err == "closed", "should have returned 'closed'")
-+    assert(err == "closed", "got " .. err .. " instead of 'closed'")
-     pass("ok")
- end
- 
-@@ -648,25 +651,24 @@ else io.stderr:write("Warning! IPv6 does not support!\n") end
- end
- 
- local udp_methods = {
--    "close", 
-+    "close",
-     "dirty",
-     "getfamily",
-     "getfd",
-     "getoption",
-     "getpeername",
-     "getsockname",
--    "receive", 
--    "receivefrom", 
--    "send", 
--    "sendto", 
--    "setfd", 
-+    "receive",
-+    "receivefrom",
-+    "send",
-+    "sendto",
-+    "setfd",
-     "setoption",
-     "setpeername",
-     "setsockname",
-     "settimeout"
- }
- 
--
- ------------------------------------------------------------------------
- test_methods(socket.udp(), udp_methods)
- do local sock = socket.tcp6()
-@@ -674,6 +676,9 @@ if sock then test_methods(socket.udp6(), udp_methods)
- else io.stderr:write("Warning! IPv6 does not support!\n") end
- end
- 
-+test("closed connection detection: ")
-+test_closed()
-+
- test("partial receive")
- test_partialrecv()
- 
-@@ -697,9 +702,6 @@ rebind_test()
- test("active close: ")
- active_close()
- 
--test("closed connection detection: ")
--test_closed()
--
- test("accept function: ")
- accept_timeout()
- accept_errors()
-diff --git a/test/testsrvr.lua b/test/testsrvr.lua
-index 72b93ab..1eb2d5b 100644
---- a/test/testsrvr.lua
-+++ b/test/testsrvr.lua
-@@ -6,7 +6,7 @@ ack = "\n";
- while 1 do
-     print("server: waiting for client connection...");
-     control = assert(server:accept());
--    while 1 do 
-+    while 1 do
-         command, emsg = control:receive();
-         if emsg == "closed" then
-             control:close()
-diff --git a/test/udpconnectclnt.lua b/test/udpconnectclnt.lua
-index effe13a..ad6ab6a 100644
---- a/test/udpconnectclnt.lua
-+++ b/test/udpconnectclnt.lua
-@@ -1,7 +1,7 @@
- local socket = require"socket"
- local udp = socket.udp
- local localhost = "127.0.0.1"
--local port = arg[1]
-+local port = assert(arg[1], "missing port argument")
- 
- se = udp(); se:setoption("reuseaddr", true)
- se:setsockname(localhost, 5062)
-diff --git a/win32.cmd b/win32.cmd
-index 48522f0..3045721 100644
---- a/win32.cmd
-+++ b/win32.cmd
-@@ -1,12 +1 @@
--make PLAT=win32 LUAV=5.2 LUAINC_win32='c:\cygwin\home\diego\build\include' LUALIB_win32='c:\cygwin\home\diego\build\bin\release'
--
--#!/bin/sh
--for p in Release Debug x64/Release x64/Debug; do
--    for el in mime socket; do
--        for e in dll lib; do
--            cp $p/$el/core.$e ../bin/$p/$el/
--        done;
--    done;
--    cp src/ltn12.lua src/socket.lua src/mime.lua ../bin/$p/
--    cp src/http.lua src/url.lua src/tp.lua src/ftp.lua src/headers.lua src/smtp.lua ../bin/$p/socket/
--done;
-+make LUAPREFIX_win32='c:\cygwin\home\diego\vc12' LUAV=5.1 PLAT=win32 LUALIBNAME_win32=lualib.lib PLATFORM_win32=Debug install-both
diff --git a/user/lua-socket/lua-cflags.patch b/user/lua-socket/lua-cflags.patch
deleted file mode 100644
index c1da89644..000000000
--- a/user/lua-socket/lua-cflags.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff --git a/src/makefile b/src/makefile
-index adf687f..c2abddc 100644
---- a/src/makefile
-+++ b/src/makefile
-@@ -160,6 +160,8 @@ SOCKET_macosx=usocket.o
- #------
- # Compiler and linker settings
- # for Linux
-+LUAPC=lua
-+LUA_CFLAGS=$(shell pkg-config --cflags $(LUAPC))
- SO_linux=so
- O_linux=o
- CC_linux=gcc
-@@ -167,7 +169,7 @@ DEF_linux=-DLUASOCKET_$(DEBUG) \
- 	-DLUASOCKET_API='__attribute__((visibility("default")))' \
- 	-DUNIX_API='__attribute__((visibility("default")))' \
- 	-DMIME_API='__attribute__((visibility("default")))'
--CFLAGS_linux= -I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
-+CFLAGS_linux= $(LUA_CFLAGS) -I$(LUAINC) $(DEF) -Wall -Wshadow -Wextra \
- 	-Wimplicit -O2 -ggdb3 -fpic -fvisibility=hidden
- LDFLAGS_linux=-O -shared -fpic -o 
- LD_linux=gcc
-- 
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