Compiled on Windows. Fixed a bunch of stuff. Almost ready to release.

Implemented a nice dispatcher! Non-blocking check-links and forward server use the dispatcher.
2024-12-25 12:08:21 +01:00 · 2005-08-23 05:53:14 +00:00 · 2005-08-23 05:53:14 +00:00 · 773e35ced3
commit 773e35ced3
parent 5e8ae76248
20 changed files with 454 additions and 364 deletions
--- a/9
+++ b/9
@ -1,11 +1,9 @@
 new instalation scheme???
+
 test empty socket.select no windows.
+
 bug by mathew percival?

-arranjar um jeito de fazer multipart/alternative
-
-what the hell does __unload do?
-
 test it on Windows!!!

 leave code for losers that don't have nanosleep
@ -45,3 +43,6 @@ testar os options!
    * received connections
    * - this function is invoked with the client socket
    * - it calls special send and receive functions that yield on timeout
+* arranjar um jeito de fazer multipart/alternative
+* what the hell does __unload do?
+    * it's there just in case someone wants to use it.
--- a/12
+++ b/12
@ -8,8 +8,8 @@
 EXT=so
 SOCKET_V=2.0.0
 MIME_V=1.0.0
-SOCKET_SO=socket-core.$(EXT).$(SOCKET_V) 
-MIME_SO=mime-core.$(EXT).$(MIME_V)
+SOCKET_SO=socket.$(EXT).$(SOCKET_V) 
+MIME_SO=mime.$(EXT).$(MIME_V)
 UNIX_SO=unix.$(EXT)

 #------
@ -25,13 +25,15 @@ COMPAT=compat-5.1r4

 #------
 # Top of your Lua installation
-# Relative paths will be inside src tree
+# Relative paths will be inside the src tree
 #
-INSTALL_TOP=/usr/local/share/lua/5.0
+#INSTALL_TOP_LUA=/usr/local/share/lua/5.0
+#INSTALL_TOP_LIB=/usr/local/lib/lua/5.0
+INSTALL_TOP_LUA=share
+INSTALL_TOP_LIB=lib

 INSTALL_DATA=cp
 INSTALL_EXEC=cp
-INSTALL_LINK=ln

 #------
 # Compiler and linker settings
--- a/doc/index.html
+++ b/doc/index.html
@ -168,6 +168,8 @@ support.
 <li> Improved: <tt>tcp:send(data, i, j)</tt> to return <tt>(i+sent-1)</tt>.  This is great for non-blocking I/O, but might break some code;
 <li> Improved: HTTP, SMTP, and FTP functions to accept a new field
 <tt>create</tt> that overrides the function used to create socket objects;
+<li> Improved: <tt>smtp.message</tt> now supports multipart/alternative
+(for the HTML messages we all love so much); 
 <li> Fixed: <tt>smtp.send</tt> was hanging on errors returned by LTN12 sources;
 <li> Fixed: <tt>url.absolute()</tt> to work when <tt>base_url</tt> is in
 parsed form;
@ -183,7 +185,7 @@ group;
 <li> Improved: Socket and MIME binaries are called 'core' each inside their
 directory (ex. "socket/core.dll"). The 'l' prefix was just a bad idea;
 <li> Improved: Using bundles in Mac OS X, instead of dylibs; 
-<li> Fixed: <tt>luasocket.h</tt> to export <tt>luaopen_socketcore</tt>;
+<li> Fixed: <tt>luasocket.h</tt> to export <tt>luaopen_socket_core</tt>;
 <li> Fixed: <tt>udp:setpeername()</tt> so you can "disconnect" an 
 <tt>UDP</tt> socket;
 <li> Fixed: A weird bug in HTTP support that caused some requests to 
--- a/etc/check-links.lua
+++ b/etc/check-links.lua
@ -5,33 +5,26 @@
 -- Author: Diego Nehab
 -- RCS ID: $$
 -----------------------------------------------------------------------------
-local dispatch, url, http, handler
+local url = require("socket.url")
+local dispatch = require("dispatch")
+local http = require("socket.http")
+dispatch.TIMEOUT = 10

+-- make sure the user knows how to invoke us
 arg = arg or {}
 if table.getn(arg) < 1 then
    print("Usage:\n  luasocket check-links.lua [-n] {<url>}")
    exit()
 end

-if arg[1] ~= "-n" then
-    -- if using blocking I/O, simulate dispatcher interface
-    url = require("socket.url")
-    http = require("socket.http")
-    handler = { 
-        start = function(self, f)
-            f()
-        end,
-        tcp = socket.tcp
-    }
-    http.TIMEOUT = 10
-else
-    -- if non-blocking I/O was requested, disable dispatcher
+-- '-n' means we are running in non-blocking mode
+if arg[1] == "-n" then
+    -- if non-blocking I/O was requested, use real dispatcher interface
    table.remove(arg, 1)
-    dispatch = require("dispatch")
-    dispatch.TIMEOUT = 10
-    url = require("socket.url")
-    http = require("socket.http")
-    handler = dispatch.newhandler()
+    handler = dispatch.newhandler("coroutine")
+else
+    -- if using blocking I/O, use fake dispatcher interface
+    handler = dispatch.newhandler("sequential")
 end

 local nthreads = 0
--- a/etc/dispatch.lua
+++ b/etc/dispatch.lua
@ -11,23 +11,33 @@ module("dispatch")

 -- if too much time goes by without any activity in one of our sockets, we
 -- just kill it
-TIMEOUT = 10
+TIMEOUT = 60

 -----------------------------------------------------------------------------
-- Mega hack. Don't try to do this at home.
+-- We implement 3 types of dispatchers: 
+--     sequential
+--     coroutine
+--     threaded
+-- The user can choose whatever one is needed
 -----------------------------------------------------------------------------
-- Lua 5.1 has coroutine.running(). We need it here, so we use this terrible
-- hack to emulate it in Lua itself
-- This is very inefficient, but is very good for debugging.
-local running
-local resume = coroutine.resume
-function coroutine.resume(co, ...)
-    running = co
-    return resume(co, unpack(arg))
+local handlert = {}
+
+-- default handler is coroutine
+function newhandler(mode)
+    mode = mode or "coroutine"
+    return handlert[mode]()
 end

-function coroutine.running()
-    return running
+local function seqstart(self, func)
+    return func()
+end
+
+-- sequential handler simply calls the functions and doesn't wrap I/O
+function handlert.sequential()
+    return { 
+        tcp = socket.tcp,
+        start = seqstart
+    }
 end

 -----------------------------------------------------------------------------
@ -36,15 +46,11 @@ end
 -- we can't yield across calls to protect, so we rewrite it with coxpcall
 -- make sure you don't require any module that uses socket.protect before
 -- loading our hack
-function socket.protect(f)
-    return f
-end
-
 function socket.protect(f)
  return function(...)
    local co = coroutine.create(f)
    while true do
-      local results = {resume(co, unpack(arg))}
+      local results = {coroutine.resume(co, unpack(arg))}
      local status = table.remove(results, 1)
      if not status then
        if type(results[1]) == 'table' then
@ -61,133 +67,7 @@ function socket.protect(f)
 end

 -----------------------------------------------------------------------------
-- socket.tcp() replacement for non-blocking I/O
-----------------------------------------------------------------------------
-local function newtrap(dispatcher)
-    -- try to create underlying socket
-    local tcp, error = socket.tcp()
-    if not tcp then return nil, error end
-    -- put it in non-blocking mode right away
-    tcp:settimeout(0)
-    -- metatable for trap produces new methods on demand for those that we
-    -- don't override explicitly.
-    local metat = { __index = function(table, key) 
-        table[key] = function(...)
-            return tcp[key](tcp, unpack(arg))
-        end
-    end}
-    -- does user want to do his own non-blocking I/O?
-    local zero = false
-    -- create a trap object that will behave just like a real socket object
-    local trap = {  } 
-    -- we ignore settimeout to preserve our 0 timeout, but record whether
-    -- the user wants to do his own non-blocking I/O
-    function trap:settimeout(mode, value)
-        if value == 0 then
-            zero = true
-        else
-            zero = false
-        end
-        return 1
-    end
-    -- send in non-blocking mode and yield on timeout
-    function trap:send(data, first, last) 
-        first = (first or 1) - 1
-        local result, error
-        while true do
-            -- tell dispatcher we want to keep sending before we yield 
-            dispatcher.sending:insert(tcp)                   
-            -- mark time we started waiting
-            dispatcher.context[tcp].last = socket.gettime()
-            -- return control to dispatcher
-            -- if upon return the dispatcher tells us we timed out,
-            -- return an error to whoever called us
-            if coroutine.yield() == "timeout" then 
-                return nil, "timeout" 
-            end
-            -- try sending
-            result, error, first = tcp:send(data, first+1, last)
-            -- if we are done, or there was an unexpected error, 
-            -- break away from loop
-            if error ~= "timeout" then return result, error, first end
-        end
-    end
-    -- receive in non-blocking mode and yield on timeout
-    -- or simply return partial read, if user requested timeout = 0
-    function trap:receive(pattern, partial)
-        local error = "timeout"
-        local value
-        while true do 
-            -- tell dispatcher we want to keep receiving before we yield
-            dispatcher.receiving:insert(tcp)
-            -- mark time we started waiting
-            dispatcher.context[tcp].last = socket.gettime()
-            -- return control to dispatcher
-            -- if upon return the dispatcher tells us we timed out,
-            -- return an error to whoever called us
-            if coroutine.yield() == "timeout" then 
-                return nil, "timeout" 
-            end
-            -- try receiving
-            value, error, partial = tcp:receive(pattern, partial)
-            -- if we are done, or there was an unexpected error, 
-            -- break away from loop
-            if (error ~= "timeout") or zero then 
-                return value, error, partial 
-            end
-        end
-    end
-    -- connect in non-blocking mode and yield on timeout
-    function trap:connect(host, port)
-        local result, error = tcp:connect(host, port)
-        -- mark time we started waiting
-        dispatcher.context[tcp].last = socket.gettime()
-        if error == "timeout" then
-            -- tell dispatcher we will be able to write uppon connection
-            dispatcher.sending:insert(tcp)
-            -- return control to dispatcher
-            -- if upon return the dispatcher tells us we have a
-            -- timeout, just abort
-            if coroutine.yield() == "timeout" then 
-                return nil, "timeout" 
-            end
-            -- when we come back, check if connection was successful
-            result, error = tcp:connect(host, port)
-            if result or error == "already connected" then return 1
-            else return nil, "non-blocking connect failed" end
-        else return result, error end
-    end
-    -- accept in non-blocking mode and yield on timeout
-    function trap:accept()
-        local result, error = tcp:accept()
-        while error == "timeout" do
-            -- mark time we started waiting
-            dispatcher.context[tcp].last = socket.gettime()
-            -- tell dispatcher we will be able to read uppon connection
-            dispatcher.receiving:insert(tcp)
-            -- return control to dispatcher
-            -- if upon return the dispatcher tells us we have a
-            -- timeout, just abort
-            if coroutine.yield() == "timeout" then 
-                return nil, "timeout" 
-            end
-        end 
-        return result, error
-    end
-    -- remove thread from context
-    function trap:close()
-        dispatcher.context[tcp] = nil
-        return tcp:close()
-    end
-    -- add newly created socket to context
-    dispatcher.context[tcp] = {
-        thread = coroutine.running()
-    }
-    return setmetatable(trap, metat)
-end
-
-----------------------------------------------------------------------------
-- Our set data structure
+-- Simple set data structure. O(1) everything.
 -----------------------------------------------------------------------------
 local function newset()
    local reverse = {}
@ -214,54 +94,208 @@ local function newset()
 end

 -----------------------------------------------------------------------------
-- Our dispatcher API. 
+-- socket.tcp() wrapper for the coroutine dispatcher 
 -----------------------------------------------------------------------------
-local metat = { __index = {} }
-
-function metat.__index:start(func) 
-    local co = coroutine.create(func)
-    assert(coroutine.resume(co))
-end
-
-function newhandler()
-    local dispatcher = { 
-        context = {},
-        sending = newset(),
-        receiving = newset()
-    }
-    function dispatcher.tcp()
-        return newtrap(dispatcher)
-    end
-    return setmetatable(dispatcher, metat)
-end
-
-- step through all active threads
-function metat.__index:step()
-    -- check which sockets are interesting and act on them
-    local readable, writable = socket.select(self.receiving, 
-        self.sending, 1)
-    -- for all readable connections, resume their threads
-    for _, who in ipairs(readable) do
-        if self.context[who] then
-            self.receiving:remove(who)
-            assert(coroutine.resume(self.context[who].thread))
+local function cowrap(dispatcher, tcp, error)
+    if not tcp then return nil, error end
+    -- put it in non-blocking mode right away
+    tcp:settimeout(0)
+    -- metatable for wrap produces new methods on demand for those that we
+    -- don't override explicitly.
+    local metat = { __index = function(table, key) 
+        table[key] = function(...)
+            arg[1] = tcp
+            return tcp[key](unpack(arg))
        end
+        return table[key]
+    end}
+    -- does our user want to do his own non-blocking I/O?
+    local zero = false
+    -- create a wrap object that will behave just like a real socket object
+    local wrap = {  } 
+    -- we ignore settimeout to preserve our 0 timeout, but record whether
+    -- the user wants to do his own non-blocking I/O
+    function wrap:settimeout(value, mode)
+        if value == 0 then zero = true
+        else zero = false end
+        return 1
+    end
+    -- send in non-blocking mode and yield on timeout
+    function wrap:send(data, first, last) 
+        first = (first or 1) - 1
+        local result, error
+        while true do
+            -- return control to dispatcher and tell it we want to send
+            -- if upon return the dispatcher tells us we timed out,
+            -- return an error to whoever called us
+            if coroutine.yield(dispatcher.sending, tcp) == "timeout" then 
+                return nil, "timeout" 
+            end
+            -- try sending
+            result, error, first = tcp:send(data, first+1, last)
+            -- if we are done, or there was an unexpected error, 
+            -- break away from loop
+            if error ~= "timeout" then return result, error, first end
+        end
+    end
+    -- receive in non-blocking mode and yield on timeout
+    -- or simply return partial read, if user requested timeout = 0
+    function wrap:receive(pattern, partial)
+        local error = "timeout"
+        local value
+        while true do 
+            -- return control to dispatcher and tell it we want to receive
+            -- if upon return the dispatcher tells us we timed out,
+            -- return an error to whoever called us
+            if coroutine.yield(dispatcher.receiving, tcp) == "timeout" then 
+                return nil, "timeout" 
+            end
+            -- try receiving
+            value, error, partial = tcp:receive(pattern, partial)
+            -- if we are done, or there was an unexpected error, 
+            -- break away from loop. also, if the user requested
+            -- zero timeout, return all we got
+            if (error ~= "timeout") or zero then 
+                return value, error, partial 
+            end
+        end
+    end
+    -- connect in non-blocking mode and yield on timeout
+    function wrap:connect(host, port)
+        local result, error = tcp:connect(host, port)
+        if error == "timeout" then
+            -- return control to dispatcher. we will be writable when
+            -- connection succeeds.
+            -- if upon return the dispatcher tells us we have a
+            -- timeout, just abort
+            if coroutine.yield(dispatcher.sending, tcp) == "timeout" then 
+                return nil, "timeout" 
+            end
+            -- when we come back, check if connection was successful
+            result, error = tcp:connect(host, port)
+            if result or error == "already connected" then return 1
+            else return nil, "non-blocking connect failed" end
+        else return result, error end
+    end
+    -- accept in non-blocking mode and yield on timeout
+    function wrap:accept()
+        while 1 do 
+            -- return control to dispatcher. we will be readable when a
+            -- connection arrives.
+            -- if upon return the dispatcher tells us we have a
+            -- timeout, just abort
+            if coroutine.yield(dispatcher.receiving, tcp) == "timeout" then 
+                return nil, "timeout" 
+            end
+            local client, error = tcp:accept()
+            if error ~= "timeout" then 
+                return cowrap(dispatcher, client, error) 
+            end
+        end 
+    end
+    -- remove cortn from context
+    function wrap:close()
+        dispatcher.stamp[tcp] = nil
+        dispatcher.sending.set:remove(tcp)
+        dispatcher.sending.cortn[tcp] = nil 
+        dispatcher.receiving.set:remove(tcp)
+        dispatcher.receiving.cortn[tcp] = nil 
+        return tcp:close()
+    end
+    return setmetatable(wrap, metat)
+end
+
+
+-----------------------------------------------------------------------------
+-- Our coroutine dispatcher 
+-----------------------------------------------------------------------------
+local cometat = { __index = {} }
+
+function schedule(cortn, status, operation, tcp)
+    if status then 
+        if cortn and operation then
+            operation.set:insert(tcp)
+            operation.cortn[tcp] = cortn
+            operation.stamp[tcp] = socket.gettime()
+        end
+    else error(operation) end
+end
+
+function kick(operation, tcp)
+    operation.cortn[tcp] = nil
+    operation.set:remove(tcp)
+end
+
+function wakeup(operation, tcp)
+    local cortn = operation.cortn[tcp]
+    -- if cortn is still valid, wake it up
+    if cortn then
+        kick(operation, tcp)
+        return cortn, coroutine.resume(cortn)
+    -- othrewise, just get scheduler not to do anything
+    else 
+        return nil, true
+    end
+end
+
+function abort(operation, tcp)
+    local cortn = operation.cortn[tcp]
+    if cortn then
+        kick(operation, tcp)
+        coroutine.resume(cortn, "timeout")
+    end
+end
+
+-- step through all active cortns
+function cometat.__index:step()
+    -- check which sockets are interesting and act on them
+    local readable, writable = socket.select(self.receiving.set, 
+        self.sending.set, 1)
+    -- for all readable connections, resume their cortns and reschedule
+    -- when they yield back to us
+    for _, tcp in ipairs(readable) do
+        schedule(wakeup(self.receiving, tcp))
    end
    -- for all writable connections, do the same
-    for _, who in ipairs(writable) do
-        if self.context[who] then
-            self.sending:remove(who)
-            assert(coroutine.resume(self.context[who].thread))
-        end
+    for _, tcp in ipairs(writable) do
+        schedule(wakeup(self.sending, tcp))
    end
-    -- politely ask replacement I/O functions in idle threads to 
+    -- politely ask replacement I/O functions in idle cortns to 
    -- return reporting a timeout
    local now = socket.gettime()
-    for who, data in pairs(self.context) do
-        if  data.last and now - data.last > TIMEOUT then
-            self.sending:remove(who)
-            self.receiving:remove(who)
-            assert(coroutine.resume(self.context[who].thread, "timeout"))
+    for tcp, stamp in pairs(self.stamp) do
+        if tcp.class == "tcp{client}" and now - stamp > TIMEOUT then
+            abort(self.sending, tcp)
+            abort(self.receiving, tcp)
        end
    end
 end
+
+function cometat.__index:start(func) 
+    local cortn = coroutine.create(func)
+    schedule(cortn, coroutine.resume(cortn))
+end
+
+function handlert.coroutine()
+    local stamp = {}
+    local dispatcher = { 
+        stamp = stamp,
+        sending  = {
+            name = "sending", 
+            set = newset(), 
+            cortn = {}, 
+            stamp = stamp
+        },
+        receiving = {
+            name = "receiving",
+            set = newset(), 
+            cortn = {}, 
+            stamp = stamp
+        },
+    }
+    function dispatcher.tcp()
+        return cowrap(dispatcher, socket.tcp())
+    end
+    return setmetatable(dispatcher, cometat)
+end
+
--- a/etc/forward.lua
+++ b/etc/forward.lua
@ -0,0 +1,65 @@
+-- load our favourite library
+local dispatch = require("dispatch")
+local handler = dispatch.newhandler()
+
+-- make sure the user knows how to invoke us
+if table.getn(arg) < 1 then
+    print("Usage")
+    print("    lua forward.lua <iport:ohost:oport> ...")
+    os.exit(1)
+end
+
+-- function to move data from one socket to the other
+local function move(foo, bar)
+    local live
+    while 1 do
+        local data, error, partial = foo:receive(2048)
+        live = data or error == "timeout"
+        data = data or partial
+        local result, error = bar:send(data)
+        if not live or not result then 
+            foo:close() 
+            bar:close()
+            break 
+        end
+    end
+end
+
+-- for each tunnel, start a new server
+for i, v in ipairs(arg) do
+    -- capture forwarding parameters
+    local _, _, iport, ohost, oport = string.find(v, "([^:]+):([^:]+):([^:]+)")
+    assert(iport, "invalid arguments")
+    -- create our server socket
+    local server = assert(handler.tcp())
+    assert(server:setoption("reuseaddr", true))
+    assert(server:bind("*", iport))
+    assert(server:listen(32))
+    -- handler for the server object loops accepting new connections
+    handler:start(function()
+        while 1 do
+            local client = assert(server:accept())
+            assert(client:settimeout(0))
+            -- for each new connection, start a new client handler
+            handler:start(function()
+                -- handler tries to connect to peer
+                local peer = assert(handler.tcp())
+                assert(peer:settimeout(0))
+                assert(peer:connect(ohost, oport))
+                -- if sucessful, starts a new handler to send data from
+                -- client to peer
+                handler:start(function()
+                    move(client, peer)
+                end)
+                -- afte starting new handler, enter in loop sending data from 
+                -- peer to client
+                move(peer, client)
+            end)
+        end
+    end)
+end
+
+-- simply loop stepping the server
+while 1 do
+    handler:step()
+end
--- a/luasocket.sln
+++ b/luasocket.sln
@ -1,5 +1,5 @@
 Microsoft Visual Studio Solution File, Format Version 8.00
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "luasocket", "luasocket.vcproj", "{66E3CE14-884D-4AEA-9F20-15A0BEAF8C5A}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "socket", "socket.vcproj", "{66E3CE14-884D-4AEA-9F20-15A0BEAF8C5A}"
 	ProjectSection(ProjectDependencies) = postProject
 	EndProjectSection
 EndProject
--- a/37
+++ b/37
@ -6,8 +6,10 @@ include config
 #------
 # Hopefully no need to change anything below this line
 #
-INSTALL_SOCKET=$(INSTALL_TOP)/socket
-INSTALL_MIME=$(INSTALL_TOP)/mime
+INSTALL_SOCKET_LUA=$(INSTALL_TOP_LUA)/socket
+INSTALL_SOCKET_LIB=$(INSTALL_TOP_LIB)/socket
+INSTALL_MIME_LUA=$(INSTALL_TOP_LUA)/mime
+INSTALL_MIME_LIB=$(INSTALL_TOP_LIB)/mime

 all clean:
 	cd src; $(MAKE) $@
@ -15,7 +17,7 @@ all clean:
 #------
 # Files to install
 #
-TO_SOCKET:= \
+TO_SOCKET_LUA:= \
 	socket.lua \
 	http.lua \
 	url.lua \
@ -23,29 +25,28 @@ TO_SOCKET:= \
 	ftp.lua \
 	smtp.lua

-TO_TOP:= \
+TO_TOP_LUA:= \
 	ltn12.lua

-TO_MIME:= \
-	$(MIME_SO) \
+TO_MIME_LUA:= \
 	mime.lua

 #------
 # Install LuaSocket according to recommendation
 #
 install: all
-	cd src; mkdir -p $(INSTALL_TOP)
-	cd src; $(INSTALL_DATA) $(COMPAT)/compat-5.1.lua $(INSTALL_TOP)
-	cd src; $(INSTALL_DATA) ltn12.lua $(INSTALL_TOP)
-	cd src; mkdir -p $(INSTALL_SOCKET)
-	cd src; $(INSTALL_EXEC) $(SOCKET_SO) $(INSTALL_SOCKET)
-	cd src; $(INSTALL_DATA) $(TO_SOCKET) $(INSTALL_SOCKET)
-	cd src; cd $(INSTALL_SOCKET); $(INSTALL_LINK) -s $(SOCKET_SO) core.$(EXT)
-	cd src; cd $(INSTALL_SOCKET); $(INSTALL_LINK) -s socket.lua init.lua
-	cd src; mkdir -p $(INSTALL_MIME)
-	cd src; $(INSTALL_DATA) $(TO_MIME) $(INSTALL_MIME)
-	cd src; cd $(INSTALL_MIME); $(INSTALL_LINK) -s $(MIME_SO) core.$(EXT)
-	cd src; cd $(INSTALL_MIME); $(INSTALL_LINK) -s mime.lua init.lua
+	cd src; mkdir -p $(INSTALL_TOP_LUA)
+	cd src; mkdir -p $(INSTALL_TOP_LIB)
+	cd src; $(INSTALL_DATA) $(COMPAT)/compat-5.1.lua $(INSTALL_TOP_LUA)
+	cd src; $(INSTALL_DATA) ltn12.lua $(INSTALL_TOP_LUA)
+	cd src; mkdir -p $(INSTALL_SOCKET_LUA)
+	cd src; mkdir -p $(INSTALL_SOCKET_LIB)
+	cd src; $(INSTALL_DATA) $(TO_SOCKET_LUA) $(INSTALL_SOCKET_LUA)
+	cd src; $(INSTALL_EXEC) $(SOCKET_SO) $(INSTALL_SOCKET_LIB)/core.$(EXT)
+	cd src; mkdir -p $(INSTALL_MIME_LUA)
+	cd src; mkdir -p $(INSTALL_MIME_LIB)
+	cd src; $(INSTALL_DATA) $(TO_MIME_LUA) $(INSTALL_MIME_LUA)
+	cd src; $(INSTALL_EXEC) $(MIME_SO) $(INSTALL_MIME_LIB)/core.$(EXT)

 #------
 # End of makefile
--- a/makefile.dist
+++ b/makefile.dist
@ -2,9 +2,9 @@
 # Distribution makefile
 #--------------------------------------------------------------------------

-DIST = luasocket-2.0-beta3
+DIST = luasocket-2.0

-COMPAT = compat-5.1r2
+COMPAT = compat-5.1r4

 LUA = \
 	ftp.lua \
@ -37,6 +37,7 @@ EXAMPLES = \

 ETC = \
 	check-links.lua \
+	check-links-nb.lua \
 	dict.lua \
 	get.lua \
 	unix.c \
@ -76,8 +77,8 @@ CORE = \
 	wsocket.h

 MAKE = \
-	makefile.Darwin \
-	makefile.Linux \
+	makefile \
+	config \
 	luasocket.sln \
 	luasocket.vcproj \
 	mime.vcproj
--- a/mime.vcproj
+++ b/mime.vcproj
@ -12,18 +12,18 @@
 	<Configurations>
 		<Configuration
 			Name="Debug|Win32"
-			OutputDirectory=".\"
-			IntermediateDirectory=".\"
+			OutputDirectory="src"
+			IntermediateDirectory="src"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\include, compat-5.1r2"
+				AdditionalIncludeDirectories="src\compat-5.1r4, ..\lua-5.0.2\include"
 				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;MIME_EXPORTS;MIME_API=__declspec(dllexport)"
 				MinimalRebuild="TRUE"
 				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
+				RuntimeLibrary="3"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@ -32,7 +32,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/cmime.dll"
+				OutputFile="$(OutDir)/mime.dll"
 				LinkIncremental="2"
 				GenerateDebugInformation="TRUE"
 				ProgramDatabaseFile="$(OutDir)/mime.pdb"
@ -62,15 +62,15 @@
 		</Configuration>
 		<Configuration
 			Name="Release|Win32"
-			OutputDirectory="."
-			IntermediateDirectory="."
+			OutputDirectory="src"
+			IntermediateDirectory="src"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
-				AdditionalIncludeDirectories="../../include, compat-5.1r2"
+				AdditionalIncludeDirectories="src\compat-5.1r4, ..\lua-5.0.2\include"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;MIME_EXPORTS; MIME_API=__declspec(dllexport)"
-				RuntimeLibrary="4"
+				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@ -79,7 +79,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/cmime.dll"
+				OutputFile="$(OutDir)/mime.dll"
 				LinkIncremental="1"
 				GenerateDebugInformation="TRUE"
 				SubSystem="2"
@ -117,19 +117,16 @@
 			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
 			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
 			<File
-				RelativePath=".\compat-5.1r2\compat-5.1.c">
+				RelativePath="src\compat-5.1r4\compat-5.1.c">
 			</File>
 			<File
-				RelativePath=".\mime.c">
+				RelativePath="src\mime.c">
 			</File>
 		</Filter>
 		<Filter
 			Name="Header Files"
 			Filter="h;hpp;hxx;hm;inl;inc;xsd"
 			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-			<File
-				RelativePath=".\mime.h">
-			</File>
 		</Filter>
 		<Filter
 			Name="Resource Files"
@ -137,10 +134,7 @@
 			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
 		</Filter>
 		<File
-			RelativePath="..\..\lib\liblua.lib">
-		</File>
-		<File
-			RelativePath="..\..\lib\liblualib.lib">
+			RelativePath="..\lua-5.0.2\lib\lua50.lib">
 		</File>
 	</Files>
 	<Globals>
--- a/luasocket.vcproj
+++ b/luasocket.vcproj
@ -2,7 +2,7 @@
 <VisualStudioProject
 	ProjectType="Visual C++"
 	Version="7.10"
-	Name="luasocket"
+	Name="socket"
 	ProjectGUID="{66E3CE14-884D-4AEA-9F20-15A0BEAF8C5A}"
 	Keyword="Win32Proj">
 	<Platforms>
@ -12,18 +12,18 @@
 	<Configurations>
 		<Configuration
 			Name="Debug|Win32"
-			OutputDirectory=".\"
-			IntermediateDirectory=".\"
+			OutputDirectory="src"
+			IntermediateDirectory="src"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\include, compat-5.1r2"
+				AdditionalIncludeDirectories="src\compat-5.1r4, ..\lua-5.0.2\include, src"
 				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;LUASOCKET_EXPORTS;LUASOCKET_API=__declspec(dllexport)"
 				MinimalRebuild="TRUE"
 				BasicRuntimeChecks="3"
-				RuntimeLibrary="5"
+				RuntimeLibrary="3"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@ -33,12 +33,12 @@
 			<Tool
 				Name="VCLinkerTool"
 				AdditionalDependencies="ws2_32.lib"
-				OutputFile="$(OutDir)/csocket.dll"
+				OutputFile="$(OutDir)/socket.dll"
 				LinkIncremental="2"
 				GenerateDebugInformation="TRUE"
-				ProgramDatabaseFile="$(OutDir)/luasocket.pdb"
+				ProgramDatabaseFile="$(OutDir)/socket.pdb"
 				SubSystem="2"
-				ImportLibrary="$(OutDir)/luasocket.lib"
+				ImportLibrary="$(OutDir)/socket.lib"
 				TargetMachine="1"/>
 			<Tool
 				Name="VCMIDLTool"/>
@ -63,15 +63,15 @@
 		</Configuration>
 		<Configuration
 			Name="Release|Win32"
-			OutputDirectory="."
-			IntermediateDirectory="."
+			OutputDirectory="./src"
+			IntermediateDirectory="./src"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
-				AdditionalIncludeDirectories="../../include, compat-5.1r2"
+				AdditionalIncludeDirectories="src\compat-5.1r4, ..\lua-5.0.2\include"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;LUASOCKET_EXPORTS;LUASOCKET_API=__declspec(dllexport);  LUASOCKET_DEBUG"
-				RuntimeLibrary="4"
+				RuntimeLibrary="2"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@ -81,13 +81,13 @@
 			<Tool
 				Name="VCLinkerTool"
 				AdditionalDependencies="ws2_32.lib"
-				OutputFile="$(OutDir)/csocket.dll"
+				OutputFile="$(OutDir)/socket.dll"
 				LinkIncremental="1"
 				GenerateDebugInformation="TRUE"
 				SubSystem="2"
 				OptimizeReferences="2"
 				EnableCOMDATFolding="2"
-				ImportLibrary="$(OutDir)/luasocket.lib"
+				ImportLibrary="$(OutDir)/socket.lib"
 				TargetMachine="1"/>
 			<Tool
 				Name="VCMIDLTool"/>
@ -119,91 +119,49 @@
 			Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
 			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
 			<File
-				RelativePath=".\auxiliar.c">
+				RelativePath="src\auxiliar.c">
 			</File>
 			<File
-				RelativePath=".\buffer.c">
+				RelativePath="src\buffer.c">
 			</File>
 			<File
-				RelativePath=".\compat-5.1r2\compat-5.1.c">
+				RelativePath="src\compat-5.1r4\compat-5.1.c">
 			</File>
 			<File
-				RelativePath=".\except.c">
+				RelativePath="src\except.c">
 			</File>
 			<File
-				RelativePath=".\inet.c">
+				RelativePath="src\inet.c">
 			</File>
 			<File
-				RelativePath=".\io.c">
+				RelativePath="src\io.c">
 			</File>
 			<File
-				RelativePath=".\luasocket.c">
+				RelativePath="src\luasocket.c">
 			</File>
 			<File
-				RelativePath=".\options.c">
+				RelativePath="src\options.c">
 			</File>
 			<File
-				RelativePath=".\select.c">
+				RelativePath="src\select.c">
 			</File>
 			<File
-				RelativePath=".\tcp.c">
+				RelativePath="src\tcp.c">
 			</File>
 			<File
-				RelativePath=".\timeout.c">
+				RelativePath="src\timeout.c">
 			</File>
 			<File
-				RelativePath=".\udp.c">
+				RelativePath="src\udp.c">
 			</File>
 			<File
-				RelativePath=".\wsocket.c">
+				RelativePath="src\wsocket.c">
 			</File>
 		</Filter>
 		<Filter
 			Name="Header Files"
 			Filter="h;hpp;hxx;hm;inl;inc;xsd"
 			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
-			<File
-				RelativePath=".\auxiliar.h">
-			</File>
-			<File
-				RelativePath=".\base.h">
-			</File>
-			<File
-				RelativePath=".\buffer.h">
-			</File>
-			<File
-				RelativePath=".\inet.h">
-			</File>
-			<File
-				RelativePath=".\io.h">
-			</File>
-			<File
-				RelativePath=".\luasocket.h">
-			</File>
-			<File
-				RelativePath=".\options.h">
-			</File>
-			<File
-				RelativePath=".\select.h">
-			</File>
-			<File
-				RelativePath=".\smtp.h">
-			</File>
-			<File
-				RelativePath=".\socket.h">
-			</File>
-			<File
-				RelativePath=".\tcp.h">
-			</File>
-			<File
-				RelativePath=".\timeout.h">
-			</File>
-			<File
-				RelativePath=".\udp.h">
-			</File>
-			<File
-				RelativePath=".\wsocket.h">
-			</File>
 		</Filter>
 		<Filter
 			Name="Resource Files"
@ -211,10 +169,7 @@
 			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
 		</Filter>
 		<File
-			RelativePath="..\..\lib\liblua.lib">
-		</File>
-		<File
-			RelativePath="..\..\lib\liblualib.lib">
+			RelativePath="..\lua-5.0.2\lib\lua50.lib">
 		</File>
 	</Files>
 	<Globals>
--- a/src/auxiliar.c
+++ b/src/auxiliar.c
@ -127,6 +127,9 @@ void aux_setclass(lua_State *L, const char *classname, int objidx) {
 * otherwise
 \*-------------------------------------------------------------------------*/
 void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx) {
+#if 0
+    return lua_touserdata(L, objidx);
+#else
    if (!lua_getmetatable(L, objidx))
        return NULL;
    lua_pushstring(L, groupname);
@ -138,6 +141,7 @@ void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx) {
        lua_pop(L, 2);
        return lua_touserdata(L, objidx);
    }
+#endif
 }

 /*-------------------------------------------------------------------------*\
@ -145,5 +149,9 @@ void *aux_getgroupudata(lua_State *L, const char *groupname, int objidx) {
 * otherwise
 \*-------------------------------------------------------------------------*/
 void *aux_getclassudata(lua_State *L, const char *classname, int objidx) {
+#if 0
+    return lua_touserdata(L, objidx);
+#else
    return luaL_checkudata(L, objidx, classname);
+#endif
 }
--- a/src/http.lua
+++ b/src/http.lua
@ -325,4 +325,3 @@ request = socket.protect(function(reqt, body)
    if base.type(reqt) == "string" then return srequest(reqt, body)
    else return trequest(reqt) end
 end)
-
--- a/src/luasocket.h
+++ b/src/luasocket.h
@ -27,6 +27,6 @@
 /*-------------------------------------------------------------------------*\
 * Initializes the library.
 \*-------------------------------------------------------------------------*/
-LUASOCKET_API int luaopen_socketcore(lua_State *L);
+LUASOCKET_API int luaopen_socket_core(lua_State *L);

 #endif /* LUASOCKET_H */
--- a/src/mime.c
+++ b/src/mime.c
@ -78,7 +78,7 @@ static UC b64unbase[256];
 /*-------------------------------------------------------------------------*\
 * Initializes module
 \*-------------------------------------------------------------------------*/
-MIME_API int luaopen_mimecore(lua_State *L)
+MIME_API int luaopen_mime_core(lua_State *L)
 {
    luaL_openlib(L, "mime", func, 0);
    /* initialize lookup tables */
--- a/src/mime.h
+++ b/src/mime.h
@ -19,6 +19,6 @@
 #define MIME_API extern
 #endif

-MIME_API int luaopen_mimecore(lua_State *L);
+MIME_API int luaopen_mime_core(lua_State *L);

 #endif /* MIME_H */
--- a/src/smtp.lua
+++ b/src/smtp.lua
@ -137,12 +137,24 @@ end
 -- send_message forward declaration
 local send_message

+-- yield the headers all at once, it's faster
+local function send_headers(headers)
+    local h = "\r\n"
+    for i,v in base.pairs(headers) do
+        h = i .. ': ' .. v .. "\r\n" .. h
+    end
+    coroutine.yield(h) 
+end
+
 -- yield multipart message body from a multipart message table
 local function send_multipart(mesgt)
+    -- make sure we have our boundary and send headers
    local bd = newboundary()
-    -- define boundary and finish headers
-    coroutine.yield('content-type: multipart/mixed; boundary="' .. 
-        bd .. '"\r\n\r\n')
+    local headers = mesgt.headers or {}
+    headers['content-type'] = headers['content-type'] or 'multipart/mixed'
+    headers['content-type'] = headers['content-type'] .. 
+        '; boundary="' ..  bd .. '"'
+    send_headers(headers)
    -- send preamble
    if mesgt.body.preamble then 
        coroutine.yield(mesgt.body.preamble) 
@ -164,11 +176,11 @@ end

 -- yield message body from a source
 local function send_source(mesgt)
-    -- set content-type if user didn't override
-    if not mesgt.headers or not mesgt.headers["content-type"] then
-        coroutine.yield('content-type: text/plain; charset="iso-8859-1"\r\n\r\n')
-    else coroutine.yield("\r\n") end
-    -- finish headers
+    -- make sure we have a content-type
+    local headers = mesgt.headers or {}
+    headers['content-type'] = headers['content-type'] or
+        'text/plain; charset="iso-8859-1"'
+    send_headers(headers)
    -- send body from source
    while true do 
        local chunk, err = mesgt.body()
@ -180,28 +192,17 @@ end

 -- yield message body from a string
 local function send_string(mesgt)
-    -- set content-type if user didn't override
-    if not mesgt.headers or not mesgt.headers["content-type"] then
-      coroutine.yield('content-type: text/plain; charset="iso-8859-1"\r\n\r\n')
-    else coroutine.yield("\r\n") end
+    -- make sure we have a content-type
+    local headers = mesgt.headers or {}
+    headers['content-type'] = headers['content-type'] or
+        'text/plain; charset="iso-8859-1"'
+    send_headers(headers)
    -- send body from string
    coroutine.yield(mesgt.body)
 end

-- yield the headers all at once 
-local function send_headers(mesgt)
-    if mesgt.headers then
-        local h = ""
-        for i,v in base.pairs(mesgt.headers) do
-            h = i .. ': ' .. v .. "\r\n" .. h
-        end
-        coroutine.yield(h)
-    end
-end
-
 -- message source
 function send_message(mesgt)
-    send_headers(mesgt)
    if base.type(mesgt.body) == "table" then send_multipart(mesgt)
    elseif base.type(mesgt.body) == "function" then send_source(mesgt)
    else send_string(mesgt) end
--- a/src/wsocket.c
+++ b/src/wsocket.c
@ -75,7 +75,7 @@ int sock_select(int n, fd_set *rfds, fd_set *wfds, fd_set *efds, p_tm tm) {
    tv.tv_sec = (int) t;
    tv.tv_usec = (int) ((t - tv.tv_sec) * 1.0e6);
    if (n <= 0) {
-        Sleep(1000*t);
+        Sleep((DWORD) (1000*t));
        return 0;
    } else return select(0, rfds, wfds, efds, t >= 0.0? &tv: NULL);
 }
--- a/test/ftptest.lua
+++ b/test/ftptest.lua
@ -12,8 +12,8 @@ local host, port, index_file, index, back, err, ret

 local t = socket.gettime()

-host = host or "diego.student.princeton.edu"
-index_file = "test/index.html"
+host = host or "localhost"
+index_file = "index.html"


 -- a function that returns a directory listing
--- a/test/testmesg.lua
+++ b/test/testmesg.lua
@ -3,6 +3,42 @@ local smtp = require("socket.smtp")
 local mime = require("mime")
 local ltn12 = require("ltn12")

+function filter(s)
+    if s then io.write(s) end
+    return s
+end
+
+source = smtp.message {
+    headers = { ['content-type'] = 'multipart/alternative' },
+    body = {
+        [1] = {
+            headers = { ['content-type'] = 'text/html' },
+            body = "<html> <body> Hi, <b>there</b>...</body> </html>"
+        },
+        [2] = {
+            headers = { ['content-type'] = 'text/plain' },
+            body = "Hi, there..."
+        }
+    }
+}
+
+r, e = smtp.send{
+    rcpt = {"<diego@tecgraf.puc-rio.br>",
+            "<diego@princeton.edu>" },
+    from = "<diego@princeton.edu>",
+    source = ltn12.source.chain(source, filter),
+    --server = "mail.cs.princeton.edu"
+    server = "localhost",
+    port = 2525
+}
+
+
+os.exit()
+
+
+
+
+
 -- 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{
@ -48,10 +84,6 @@ source = smtp.message{
  }
 }

-function filter(s)
-    if s then io.write(s) end
-    return s
-end

 r, e = smtp.send{
    rcpt = {"<diego@tecgraf.puc-rio.br>",
@ -64,3 +96,5 @@ r, e = smtp.send{
 }

 print(r, e)
+
+