diff --git a/TODO b/TODO
index 7dadfd9..dfb9178 100644
--- a/TODO
+++ b/TODO
@@ -1,14 +1,12 @@
-
+use wim's filter.chain or something better
 make sure standard libraries are "required" by modules before use.
 eliminate globals from namespaces created by module().
 ftp.send/recv return bytes transfered?
 new scheme to choose family/protocol of object to create
 change ltn13 to make sure drawbacks are obvious
     - check discussion
-make sure errors not thrown by try() are not caught by protect()
 use mike's "don't set to blocking before closing unless needed" patch?
 take a look at DB's smtp patch (add "extra argument" table)
-move wsocket.c:sock_send kludge to buffer.c:sendraw (probably)?
 
 optmize aux_getgroupudata (Mike idea)
     make aux_newclass receive upvalues
@@ -25,7 +23,10 @@ testar os options!
   - proteger ou atomizar o conjunto (timedout, receive), (timedout, send)
   - inet_ntoa também é uma merda.
 
-*use wim's filter.chain or something better
+*close wasn't returning 1
+*make sure errors not thrown by try() are not caught by protect()
+*move wsocket.c:sock_send kludge to buffer.c:sendraw?
+*bug on UDP sendto.
 *fix PROXY in http.lua
 *use new distribution scheme
 *create the getstats method. 
diff --git a/doc/ftp.html b/doc/ftp.html
index 158b402..0b52007 100644
--- a/doc/ftp.html
+++ b/doc/ftp.html
@@ -163,7 +163,7 @@ local ltn12 = require("ltn12")
 local url = require("url")
 
 -- a function that returns a directory listing
-function ls(u)
+function nlst(u)
     local t = {}
     local p = url.parse(u)
     p.command = "nlst"
diff --git a/etc/dict.lua b/etc/dict.lua
index 8c197f5..716b8db 100644
--- a/etc/dict.lua
+++ b/etc/dict.lua
@@ -8,11 +8,14 @@
 -----------------------------------------------------------------------------
 -- Load required modules
 -----------------------------------------------------------------------------
+local base = require("base")
+local string = require("string")
+local table = require("table")
 local socket = require("socket")
 local url = require("socket.url")
 local tp = require("socket.tp")
 
-module("socket.dict")
+local dict = module("socket.dict")
 
 -----------------------------------------------------------------------------
 -- Globals 
@@ -28,7 +31,7 @@ local metat = { __index = {} }
 
 function open(host, port)
     local tp = socket.try(tp.connect(host or HOST, port or PORT, TIMEOUT))
-    return setmetatable({tp = tp}, metat)
+    return base.setmetatable({tp = tp}, metat)
 end
 
 function metat.__index:greet()
@@ -37,7 +40,8 @@ end
 
 function metat.__index:check(ok)
     local code, status = socket.try(self.tp:check(ok))
-    return code, tonumber(socket.skip(2, string.find(status, "^%d%d%d (%d*)")))
+    return code, 
+        base.tonumber(socket.skip(2, string.find(status, "^%d%d%d (%d*)")))
 end
 
 function metat.__index:getdef()
@@ -116,7 +120,7 @@ local function parse(u)
     if cmd == "m" then 
         arg = string.gsub(arg, "^:([^:]*)", function(f) t.strat = there(f) end)
     end
-    string.gsub(arg, ":([^:]*)$", function(f) t.n = tonumber(f) end)
+    string.gsub(arg, ":([^:]*)$", function(f) t.n = base.tonumber(f) end)
     return t
 end
 
@@ -143,6 +147,8 @@ local function sget(u)
 end
 
 get = socket.protect(function(gett)
-    if type(gett) == "string" then return sget(gett)
+    if base.type(gett) == "string" then return sget(gett)
     else return tget(gett) end
 end)
+
+base.setmetatable(dict, nil)
diff --git a/etc/lp.lua b/etc/lp.lua
index b69cc02..a5327d1 100644
--- a/etc/lp.lua
+++ b/etc/lp.lua
@@ -9,9 +9,12 @@
      if you have any questions: RFC 1179
 ]]
 -- make sure LuaSocket is loaded
+local io = require("io")
+local base = require("base")
+local string = require("string")
 local socket = require("socket")
 local ltn12 = require("ltn12")
-local test = socket.try
+local lp = module("socket.lp")
 
 -- default port
 PORT = 515
@@ -28,7 +31,7 @@ local function connect(localhost, option)
         local localport = 721
         local done, err
         repeat
-            skt = test(socket.tcp())
+            skt = socket.try(socket.tcp())
             try(skt:settimeout(30))
             done, err = skt:bind(localhost, localport)
             if not done then
@@ -37,8 +40,8 @@ local function connect(localhost, option)
                 skt = nil
             else break end
         until localport > 731
-        test(skt, err)
-    else skt = test(socket.tcp()) end
+        socket.try(skt, err)
+    else skt = socket.try(socket.tcp()) end
     try(skt:connect(host, port))
     return { skt = skt, try = try }
 end
@@ -241,9 +244,9 @@ local format_codes = {
 -- lp.send
 
 send = socket.protect(function(file, option)
-  test(file, "invalid file name")
-  test(option and type(option) == "table", "invalid options")
-  local fh = test(io.open(file,"rb"))
+  socket.try(file, "invalid file name")
+  socket.try(option and base.type(option) == "table", "invalid options")
+  local fh = socket.try(io.open(file,"rb"))
   local datafile_size = fh:seek("end") -- get total size
   fh:seek("set")                        -- go back to start of file
   local localhost = socket.dns.gethostname() or os.getenv("COMPUTERNAME") 
@@ -270,11 +273,11 @@ send = socket.protect(function(file, option)
     lpfile,
     ctlfn); -- mandatory part of ctl file
   if (option.banner) then cfile = cfile .. 'L'..user..'\10' end
-  if (option.indent) then cfile = cfile .. 'I'..tonumber(option.indent)..'\10' end
+  if (option.indent) then cfile = cfile .. 'I'..base.tonumber(option.indent)..'\10' end
   if (option.mail) then cfile = cfile .. 'M'..string.sub((option.mail),1,128)..'\10' end
   if (fmt == 'p' and option.title) then cfile = cfile .. 'T'..string.sub((option.title),1,79)..'\10' end
   if ((fmt == 'p' or fmt == 'l' or fmt == 'f') and option.width) then
-    cfile = cfile .. 'W'..tonumber(option,width)..'\10'
+    cfile = cfile .. 'W'..base.tonumber(option,width)..'\10'
   end
 
   con.skt:settimeout(option.timeout or 65)
@@ -314,3 +317,5 @@ query = socket.protect(function(p)
   con.skt:close()
   return data
 end)
+
+base.setmetatable(lp, nil)
diff --git a/etc/tftp.lua b/etc/tftp.lua
index f4af8bc..83a08b9 100644
--- a/etc/tftp.lua
+++ b/etc/tftp.lua
@@ -8,11 +8,14 @@
 -----------------------------------------------------------------------------
 -- Load required files
 -----------------------------------------------------------------------------
+local base = require("base")
+local table = require("table")
+local math = require("math")
+local string = require("string")
 local socket = require("socket")
 local ltn12 = require("ltn12")
 local url = require("socket.url")
-
-module("socket.tftp")
+local tftp = module("socket.tftp")
 
 -----------------------------------------------------------------------------
 -- Program constants
@@ -73,16 +76,18 @@ end
 local function tget(gett)
     local retries, dgram, sent, datahost, dataport, code
     local last = 0
+    socket.try(gett.host, "missing host")
 	local con = socket.try(socket.udp())
     local try = socket.newtry(function() con:close() end)
     -- convert from name to ip if needed
 	gett.host = try(socket.dns.toip(gett.host))
 	con:settimeout(1)
     -- first packet gives data host/port to be used for data transfers
+    local path = string.gsub(gett.path or "", "^/", "") 
+    path = url.unescape(path)
     retries = 0
 	repeat 
-		sent = try(con:sendto(RRQ(gett.path, "octet"), 
-            gett.host, gett.port))
+		sent = try(con:sendto(RRQ(path, "octet"), gett.host, gett.port))
 		dgram, datahost, dataport = con:receivefrom()
         retries = retries + 1
 	until dgram or datahost ~= "timeout" or retries > 5
@@ -144,6 +149,8 @@ local function sget(u)
 end
 
 get = socket.protect(function(gett)
-    if type(gett) == "string" then return sget(gett)
+    if base.type(gett) == "string" then return sget(gett)
     else return tget(gett) end
 end)
+
+base.setmetatable(tftp, nil)
diff --git a/luasocket.vcproj b/luasocket.vcproj
index 6e2da8a..4699498 100644
--- a/luasocket.vcproj
+++ b/luasocket.vcproj
@@ -12,17 +12,18 @@
 	<Configurations>
 		<Configuration
 			Name="Debug|Win32"
-			OutputDirectory="Debug"
-			IntermediateDirectory="Debug"
+			OutputDirectory=".\"
+			IntermediateDirectory=".\"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;LUASOCKET_EXPORTS"
+				AdditionalIncludeDirectories="h:\include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;LUASOCKET_EXPORTS;LUASOCKET_API=__declspec(dllexport)"
 				MinimalRebuild="TRUE"
 				BasicRuntimeChecks="3"
-				RuntimeLibrary="1"
+				RuntimeLibrary="5"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@@ -31,6 +32,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
+				AdditionalDependencies="ws2_32.lib"
 				OutputFile="$(OutDir)/lsocket.dll"
 				LinkIncremental="2"
 				GenerateDebugInformation="TRUE"
@@ -69,7 +71,7 @@
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="../../include"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;LUASOCKET_EXPORTS;LUASOCKET_API=__declspec(dllexport);  LUASOCKET_DEBUG"
-				RuntimeLibrary="0"
+				RuntimeLibrary="4"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@@ -209,10 +211,10 @@
 			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
 		</Filter>
 		<File
-			RelativePath="..\..\lib\lua.lib">
+			RelativePath="..\..\lib\liblua.lib">
 		</File>
 		<File
-			RelativePath="..\..\lib\lualib.lib">
+			RelativePath="..\..\lib\liblualib.lib">
 		</File>
 	</Files>
 	<Globals>
diff --git a/mime.vcproj b/mime.vcproj
index 51ce05e..9fe7aa8 100644
--- a/mime.vcproj
+++ b/mime.vcproj
@@ -12,17 +12,18 @@
 	<Configurations>
 		<Configuration
 			Name="Debug|Win32"
-			OutputDirectory="Debug"
-			IntermediateDirectory="Debug"
+			OutputDirectory=".\"
+			IntermediateDirectory=".\"
 			ConfigurationType="2"
 			CharacterSet="2">
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;MIME_EXPORTS"
+				AdditionalIncludeDirectories="h:\include"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;MIME_EXPORTS;MIME_API=__declspec(dllexport)"
 				MinimalRebuild="TRUE"
 				BasicRuntimeChecks="3"
-				RuntimeLibrary="1"
+				RuntimeLibrary="5"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@@ -69,7 +70,7 @@
 				Name="VCCLCompilerTool"
 				AdditionalIncludeDirectories="../../include"
 				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_USRDLL;MIME_EXPORTS; MIME_API=__declspec(dllexport)"
-				RuntimeLibrary="0"
+				RuntimeLibrary="4"
 				UsePrecompiledHeader="0"
 				WarningLevel="3"
 				Detect64BitPortabilityProblems="TRUE"
@@ -136,10 +137,10 @@
 			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
 		</Filter>
 		<File
-			RelativePath="..\..\lib\lua.lib">
+			RelativePath="..\..\lib\liblua.lib">
 		</File>
 		<File
-			RelativePath="..\..\lib\lualib.lib">
+			RelativePath="..\..\lib\liblualib.lib">
 		</File>
 	</Files>
 	<Globals>
diff --git a/src/buffer.c b/src/buffer.c
index dbd5d2c..1b1b791 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -158,6 +158,7 @@ int buf_isempty(p_buf buf) {
 /*-------------------------------------------------------------------------*\
 * Sends a block of data (unbuffered)
 \*-------------------------------------------------------------------------*/
+#define STEPSIZE 8192
 static int sendraw(p_buf buf, const char *data, size_t count, size_t *sent) {
     p_io io = buf->io;
     p_tm tm = buf->tm;
@@ -165,7 +166,8 @@ static int sendraw(p_buf buf, const char *data, size_t count, size_t *sent) {
     int err = IO_DONE;
     while (total < count && err == IO_DONE) {
         size_t done;
-        err = io->send(io->ctx, data+total, count-total, &done, tm);
+        size_t step = (count-total <= STEPSIZE)? count-total: STEPSIZE;
+        err = io->send(io->ctx, data+total, step, &done, tm);
         total += done;
     }
     *sent = total;
diff --git a/src/except.c b/src/except.c
index 80d7e5d..dabaf19 100644
--- a/src/except.c
+++ b/src/except.c
@@ -29,11 +29,21 @@ 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);
+}
+
 static int finalize(lua_State *L) {
     if (!lua_toboolean(L, 1)) {
         lua_pushvalue(L, lua_upvalueindex(1));
         lua_pcall(L, 0, 0, 0);
         lua_settop(L, 2);
+        wrap(L);
         lua_error(L);
         return 0;
     } else return lua_gettop(L);
@@ -54,13 +64,23 @@ 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;
+}
+
 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) {
-        lua_pushnil(L);
-        lua_insert(L, 1);
-        return 2;
+        if (unwrap(L)) return 2;
+        else lua_error(L);
+        return 0;
     } else return lua_gettop(L);
 }
 
diff --git a/src/ftp.lua b/src/ftp.lua
index 9902c88..4529acd 100644
--- a/src/ftp.lua
+++ b/src/ftp.lua
@@ -8,13 +8,15 @@
 -----------------------------------------------------------------------------
 -- Declare module and import dependencies
 -----------------------------------------------------------------------------
+local base = require("base")
+local table = require("table")
+local string = require("string")
+local math = require("math")
 local socket = require("socket")
 local url = require("socket.url")
 local tp = require("socket.tp")
-
 local ltn12 = require("ltn12")
-
-module("socket.ftp")
+local ftp = module("socket.ftp")
 
 -----------------------------------------------------------------------------
 -- Program constants
@@ -35,7 +37,7 @@ local metat = { __index = {} }
 
 function open(server, port)
     local tp = socket.try(tp.connect(server, port or PORT, TIMEOUT))
-    local f = setmetatable({ tp = tp }, metat)
+    local f = base.setmetatable({ tp = tp }, metat)
     -- make sure everything gets closed in an exception
     f.try = socket.newtry(function() f:close() end)
     return f 
@@ -102,7 +104,8 @@ function metat.__index:send(sendt)
     -- we just get the data connection into self.data
     if self.pasvt then self:pasvconnect() end
     -- get the transfer argument and command 
-    local argument = sendt.argument or string.gsub(sendt.path, "^/", "")
+    local argument = sendt.argument or 
+        url.unescape(string.gsub(sendt.path or "", "^/", ""))
     if argument == "" then argument = nil end
     local command = sendt.command or "stor"
     -- send the transfer command and check the reply
@@ -134,7 +137,8 @@ end
 function metat.__index:receive(recvt)
     self.try(self.pasvt or self.server, "need port or pasv first")
     if self.pasvt then self:pasvconnect() end
-    local argument = recvt.argument or string.gsub(recvt.path, "^/", "")
+    local argument = recvt.argument or 
+        url.unescape(string.gsub(recvt.path or "", "^/", ""))
     if argument == "" then argument = nil end
     local command = recvt.command or "retr"
     self.try(self.tp:command(command, argument))
@@ -182,7 +186,19 @@ end
 -----------------------------------------------------------------------------
 -- High level FTP API
 -----------------------------------------------------------------------------
+function override(t)
+    if t.url then
+        u = url.parse(t.url)
+        for i,v in base.pairs(t) do
+            u[i] = v
+        end
+        return u
+    else return t end
+end
+
 local function tput(putt)
+    putt = override(putt)
+    socket.try(putt.host, "missing hostname")
     local f = open(putt.host, putt.port)
     f:greet()
     f:login(putt.user, putt.password)
@@ -201,8 +217,8 @@ local default = {
 
 local function parse(u)
     local t = socket.try(url.parse(u, default))
-    socket.try(t.scheme == "ftp", "invalid scheme '" .. t.scheme .. "'")
-    socket.try(t.host, "invalid host")
+    socket.try(t.scheme == "ftp", "wrong scheme '" .. t.scheme .. "'")
+    socket.try(t.host, "missing hostname")
     local pat = "^type=(.)$"
     if t.params then 
         t.type = socket.skip(2, string.find(t.params, pat))
@@ -219,11 +235,13 @@ local function sput(u, body)
 end
 
 put = socket.protect(function(putt, body)
-    if type(putt) == "string" then return sput(putt, body)
+    if base.type(putt) == "string" then return sput(putt, body)
     else return tput(putt) end
 end)
 
 local function tget(gett)
+    gett = override(gett)
+    socket.try(gett.host, "missing hostname")
     local f = open(gett.host, gett.port)
     f:greet()
     f:login(gett.user, gett.password)
@@ -242,7 +260,22 @@ local function sget(u)
     return table.concat(t)
 end
 
+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)
+    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
+    f:quit()
+    return f:close()
+end)
+
 get = socket.protect(function(gett)
-    if type(gett) == "string" then return sget(gett)
+    if base.type(gett) == "string" then return sget(gett)
     else return tget(gett) end
 end)
+
+base.setmetatable(ftp, nil)
diff --git a/src/http.lua b/src/http.lua
index b265650..a15ea69 100644
--- a/src/http.lua
+++ b/src/http.lua
@@ -12,8 +12,10 @@ local socket = require("socket")
 local url = require("socket.url")
 local ltn12 = require("ltn12")
 local mime = require("mime")
-
-module("socket.http")
+local string = require("string")
+local base = require("base")
+local table = require("table")
+local http = module("socket.http")
 
 -----------------------------------------------------------------------------
 -- Program constants
@@ -32,7 +34,7 @@ local metat = { __index = {} }
 
 function open(host, port)
     local c = socket.try(socket.tcp()) 
-    local h = setmetatable({ c = c }, metat)
+    local h = base.setmetatable({ c = c }, metat)
     -- make sure the connection gets closed on exception
     h.try = socket.newtry(function() h:close() end)
     h.try(c:settimeout(TIMEOUT))
@@ -46,7 +48,7 @@ function metat.__index:sendrequestline(method, uri)
 end
 
 function metat.__index:sendheaders(headers)
-    for i, v in pairs(headers) do
+    for i, v in base.pairs(headers) do
         self.try(self.c:send(i .. ": " .. v .. "\r\n"))
     end
     -- mark end of request headers
@@ -66,7 +68,7 @@ end
 function metat.__index:receivestatusline()
     local status = self.try(self.c:receive())
     local code = socket.skip(2, string.find(status, "HTTP/%d*%.%d* (%d%d%d)"))
-    return self.try(tonumber(code), status)
+    return self.try(base.tonumber(code), status)
 end
 
 function metat.__index:receiveheaders()
@@ -97,11 +99,11 @@ end
 function metat.__index:receivebody(headers, sink, step)
     sink = sink or ltn12.sink.null()
     step = step or ltn12.pump.step
-    local length = tonumber(headers["content-length"])
+    local length = base.tonumber(headers["content-length"])
     local TE = headers["transfer-encoding"]
     local mode = "default" -- connection close
     if TE and TE ~= "identity" then mode = "http-chunked"
-    elseif tonumber(headers["content-length"]) then mode = "by-length" end
+    elseif base.tonumber(headers["content-length"]) then mode = "by-length" end
     return self.try(ltn12.pump.all(socket.source(mode, self.c, length), 
         sink, step))
 end
@@ -159,9 +161,10 @@ local default = {
 local function adjustrequest(reqt)
     -- parse url if provided
     local nreqt = reqt.url and url.parse(reqt.url, default) or {}
+    local t = url.parse(reqt.url, default)
     -- explicit components override url
     for i,v in reqt do nreqt[i] = reqt[i] end
-    socket.try(nreqt.host, "invalid host '" .. tostring(nreqt.host) .. "'")
+    socket.try(nreqt.host, "invalid host '" .. base.tostring(nreqt.host) .. "'")
     -- compute uri if user hasn't overriden
     nreqt.uri = reqt.uri or adjusturi(nreqt)
     -- ajust host and port if there is a proxy
@@ -253,6 +256,8 @@ local function srequest(u, body)
 end
 
 request = socket.protect(function(reqt, body)
-    if type(reqt) == "string" then return srequest(reqt, body)
+    if base.type(reqt) == "string" then return srequest(reqt, body)
     else return trequest(reqt) end
 end)
+
+base.setmetatable(http, nil)
diff --git a/src/ltn12.lua b/src/ltn12.lua
index ed39ec8..43c2755 100644
--- a/src/ltn12.lua
+++ b/src/ltn12.lua
@@ -8,7 +8,11 @@
 -----------------------------------------------------------------------------
 -- Declare module
 -----------------------------------------------------------------------------
-module("ltn12")
+local string = require("string")
+local table = require("table")
+local base = require("base")
+local coroutine = require("coroutine")
+local ltn12 = module("ltn12")
 
 filter = {}
 source = {}
@@ -23,7 +27,7 @@ BLOCKSIZE = 2048
 -----------------------------------------------------------------------------
 -- returns a high level filter that cycles a low-level filter
 function filter.cycle(low, ctx, extra)
-    assert(low)
+    base.assert(low)
     return function(chunk)
         local ret
         ret, ctx = low(ctx, chunk, extra)
@@ -121,7 +125,7 @@ end
 
 -- turns a fancy source into a simple source
 function source.simplify(src)
-    assert(src)
+    base.assert(src)
     return function()
         local chunk, err_or_new = src()
         src = err_or_new or src
@@ -145,7 +149,7 @@ end
 
 -- creates rewindable source
 function source.rewind(src)
-    assert(src)
+    base.assert(src)
     local t = {}
     return function(chunk)
         if not chunk then
@@ -160,7 +164,7 @@ end
 
 -- chains a source with a filter
 function source.chain(src, f)
-    assert(src and f)
+    base.assert(src and f)
     local co = coroutine.create(function()
         while true do 
             local chunk, err = src()
@@ -215,7 +219,7 @@ end
 
 -- turns a fancy sink into a simple sink
 function sink.simplify(snk)
-    assert(snk)
+    base.assert(snk)
     return function(chunk, err)
         local ret, err_or_new = snk(chunk, err)
         if not ret then return nil, err_or_new end
@@ -254,7 +258,7 @@ end
 
 -- chains a sink with a filter 
 function sink.chain(f, snk)
-    assert(f and snk)
+    base.assert(f and snk)
     return function(chunk, err)
         local filtered = f(chunk)
         local done = chunk and ""
@@ -279,10 +283,12 @@ end
 
 -- pumps all data from a source to a sink, using a step function
 function pump.all(src, snk, step)
-    assert(src and snk)
+    base.assert(src and snk)
     step = step or pump.step
     while true do
         local ret, err = step(src, snk)
         if not ret then return not err, err end
     end
 end
+
+base.setmetatable(ltn12, nil)
diff --git a/src/mime.lua b/src/mime.lua
index 3dbcf79..712600c 100644
--- a/src/mime.lua
+++ b/src/mime.lua
@@ -8,9 +8,10 @@
 -----------------------------------------------------------------------------
 -- Declare module and import dependencies
 -----------------------------------------------------------------------------
-module("mime")
-local mime = require("lmime")
+local base = require("base")
 local ltn12 = require("ltn12")
+local mime = require("lmime")
+module("mime")
 
 -- encode, decode and wrap algorithm tables
 mime.encodet = {}
@@ -20,11 +21,11 @@ mime.wrapt = {}
 -- creates a function that chooses a filter by name from a given table 
 local function choose(table)
     return function(name, opt1, opt2)
-        if type(name) ~= "string" then 
+        if base.type(name) ~= "string" then 
             name, opt1, opt2 = "default", name, opt1
         end
         local f = table[name or "nil"]
-        if not f then error("unknown key (" .. tostring(name) .. ")", 3)
+        if not f then error("unknown key (" .. base.tostring(name) .. ")", 3)
         else return f(opt1, opt2) end
     end
 end
@@ -74,3 +75,5 @@ end
 function mime.stuff()
     return ltn12.filter.cycle(dot, 2)
 end
+
+base.setmetatable(mime, nil)
diff --git a/src/smtp.lua b/src/smtp.lua
index 974d222..9d49178 100644
--- a/src/smtp.lua
+++ b/src/smtp.lua
@@ -8,13 +8,16 @@
 -----------------------------------------------------------------------------
 -- Declare module and import dependencies
 -----------------------------------------------------------------------------
+local base = require("base")
+local coroutine = require("coroutine")
+local string = require("string")
+local math = require("math")
+local os = require("os")
 local socket = require("socket")
 local tp = require("socket.tp")
-
 local ltn12 = require("ltn12")
 local mime = require("mime")
-
-module("socket.smtp")
+local smtp = module("socket.smtp")
 
 -----------------------------------------------------------------------------
 -- Program constants
@@ -98,8 +101,8 @@ end
 -- send message or throw an exception
 function metat.__index:send(mailt) 
     self:mail(mailt.from)
-    if type(mailt.rcpt) == "table" then
-        for i,v in ipairs(mailt.rcpt) do
+    if base.type(mailt.rcpt) == "table" then
+        for i,v in base.ipairs(mailt.rcpt) do
             self:rcpt(v)
         end
     else
@@ -110,7 +113,7 @@ end
 
 function open(server, port)
     local tp = socket.try(tp.connect(server or SERVER, port or PORT, TIMEOUT))
-    local s = setmetatable({tp = tp}, metat)
+    local s = base.setmetatable({tp = tp}, metat)
     -- make sure tp is closed if we get an exception
     s.try = socket.newtry(function() 
         if s.tp:command("QUIT") then s.tp:check("2..") end
@@ -145,7 +148,7 @@ local function send_multipart(mesgt)
         coroutine.yield("\r\n") 
     end
     -- send each part separated by a boundary
-    for i, m in ipairs(mesgt.body) do
+    for i, m in base.ipairs(mesgt.body) do
         coroutine.yield("\r\n--" .. bd .. "\r\n")
         send_message(m)
     end
@@ -191,7 +194,7 @@ end
 -- yield the headers one by one
 local function send_headers(mesgt)
     if mesgt.headers then
-        for i,v in pairs(mesgt.headers) do
+        for i,v in base.pairs(mesgt.headers) do
             coroutine.yield(i .. ':' .. v .. "\r\n")
         end
     end
@@ -200,8 +203,8 @@ end
 -- message source
 function send_message(mesgt)
     send_headers(mesgt)
-    if type(mesgt.body) == "table" then send_multipart(mesgt)
-    elseif type(mesgt.body) == "function" then send_source(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
 end
 
@@ -241,3 +244,5 @@ send = socket.protect(function(mailt)
     s:quit()
     return s:close()
 end)
+
+base.setmetatable(smtp, nil)
diff --git a/src/tcp.c b/src/tcp.c
index 746c4b6..618f4ce 100644
--- a/src/tcp.c
+++ b/src/tcp.c
@@ -233,7 +233,8 @@ static int meth_close(lua_State *L)
 {
     p_tcp tcp = (p_tcp) aux_checkgroup(L, "tcp{any}", 1);
     sock_destroy(&tcp->sock);
-    return 0;
+    lua_pushnumber(L, 1);
+    return 1;
 }
 
 /*-------------------------------------------------------------------------*\
diff --git a/src/tp.lua b/src/tp.lua
index ada00d2..0a671fb 100644
--- a/src/tp.lua
+++ b/src/tp.lua
@@ -8,10 +8,12 @@
 -----------------------------------------------------------------------------
 -- Declare module and import dependencies
 -----------------------------------------------------------------------------
+local base = require("base")
+local string = require("string")
 local socket = require("socket")
 local ltn12 = require("ltn12")
 
-module("socket.tp")
+local tp = module("socket.tp")
 
 -----------------------------------------------------------------------------
 -- Program constants
@@ -47,22 +49,27 @@ local metat = { __index = {} }
 function metat.__index:check(ok)
     local code, reply = get_reply(self.c)
     if not code then return nil, reply end
-    if type(ok) ~= "function" then
-        if type(ok) == "table" then 
-            for i, v in ipairs(ok) do
-                if string.find(code, v) then return tonumber(code), reply end
+    if base.type(ok) ~= "function" then
+        if base.type(ok) == "table" then 
+            for i, v in base.ipairs(ok) do
+                if string.find(code, v) then 
+                    return base.tonumber(code), reply 
+                end
             end
             return nil, reply
         else
-            if string.find(code, ok) then return tonumber(code), reply 
+            if string.find(code, ok) then return base.tonumber(code), reply 
             else return nil, reply end
         end
-    else return ok(tonumber(code), reply) end
+    else return ok(base.tonumber(code), reply) end
 end
 
 function metat.__index:command(cmd, arg)
-    if arg then return self.c:send(cmd .. " " .. arg.. "\r\n")
-    else return self.c:send(cmd .. "\r\n") end
+    if arg then 
+        return self.c:send(cmd .. " " .. arg.. "\r\n")
+    else 
+        return self.c:send(cmd .. "\r\n") 
+    end
 end
 
 function metat.__index:sink(snk, pat)
@@ -111,5 +118,7 @@ function connect(host, port, timeout)
         c:close() 
         return nil, e
     end
-    return setmetatable({c = c}, metat)
+    return base.setmetatable({c = c}, metat)
 end
+
+base.setmetatable(tp, nil)
diff --git a/src/udp.c b/src/udp.c
index 97a6169..7a60080 100644
--- a/src/udp.c
+++ b/src/udp.c
@@ -288,7 +288,8 @@ static int meth_setpeername(lua_State *L) {
 static int meth_close(lua_State *L) {
     p_udp udp = (p_udp) aux_checkgroup(L, "udp{any}", 1);
     sock_destroy(&udp->sock);
-    return 0;
+    lua_pushnumber(L, 1);
+    return 1;
 }
 
 /*-------------------------------------------------------------------------*\
diff --git a/src/url.lua b/src/url.lua
index efe7254..08081f0 100644
--- a/src/url.lua
+++ b/src/url.lua
@@ -8,7 +8,10 @@
 -----------------------------------------------------------------------------
 -- Declare module
 -----------------------------------------------------------------------------
-module("socket.url")
+local string = require("string")
+local base = require("base")
+local table = require("table")
+local url = module("socket.url")
 
 -----------------------------------------------------------------------------
 -- Encodes a string into its escaped hexadecimal representation
@@ -18,7 +21,7 @@ module("socket.url")
 --   escaped representation of string binary
 -----------------------------------------------------------------------------
 function escape(s)
-    return string.gsub(s, "(.)", function(c)
+    return string.gsub(s, "([^A-Za-z0-9_])", function(c)
         return string.format("%%%02x", string.byte(c))
     end)
 end
@@ -33,7 +36,7 @@ end
 -----------------------------------------------------------------------------
 local function make_set(t)
 	local s = {}
-	for i = 1, table.getn(t) do
+	for i,v in base.ipairs(t) do
 		s[t[i]] = 1
 	end
 	return s
@@ -62,7 +65,7 @@ end
 -----------------------------------------------------------------------------
 function unescape(s)
     return string.gsub(s, "%%(%x%x)", function(hex)
-        return string.char(tonumber(hex, 16))
+        return string.char(base.tonumber(hex, 16))
     end)
 end
 
@@ -191,7 +194,7 @@ end
 --   corresponding absolute url
 -----------------------------------------------------------------------------
 function absolute(base_url, relative_url)
-    local base = type(base_url) == "table" and base_url or parse(base_url)
+    local base = base.type(base_url) == "table" and base_url or parse(base_url)
     local relative = parse(relative_url)
     if not base then return relative_url
     elseif not relative then return base_url
@@ -269,3 +272,5 @@ function build_path(parsed, unsafe)
 	if parsed.is_absolute then path = "/" .. path end
 	return path
 end
+
+base.setmetatable(url, nil)
diff --git a/src/wsocket.c b/src/wsocket.c
index 1b169ed..0294dce 100644
--- a/src/wsocket.c
+++ b/src/wsocket.c
@@ -180,9 +180,10 @@ int sock_accept(p_sock ps, p_sock pa, SA *addr, socklen_t *len, p_tm tm) {
 
 /*-------------------------------------------------------------------------*\
 * 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. 
+* Therefore, whoever calls this function should not pass a huge buffer.
 \*-------------------------------------------------------------------------*/
-/* has to be larger than UDP_DATAGRAMSIZE !!!*/
-#define MAXCHUNK (64*1024)
 int sock_send(p_sock ps, const char *data, size_t count, size_t *sent, p_tm tm)
 {
     int err;
@@ -192,9 +193,7 @@ int sock_send(p_sock ps, const char *data, size_t count, size_t *sent, p_tm tm)
     *sent = 0;
     for ( ;; ) {
         /* try to send something */
-		/* 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. */
-		int put = send(*ps, data, (count < MAXCHUNK)? (int)count: MAXCHUNK, 0);
+		int put = send(*ps, data, count, 0);
         /* if we sent something, we are done */
         if (put > 0) {
             *sent = put;
@@ -221,7 +220,7 @@ int sock_sendto(p_sock ps, const char *data, size_t count, size_t *sent,
     if (*ps == SOCK_INVALID) return IO_CLOSED;
     *sent = 0;
     for ( ;; ) {
-        int put = send(*ps, data, (int) count, 0);
+        int put = sendto(*ps, data, (int) count, 0, addr, len);
         if (put > 0) {
             *sent = put;
             return IO_DONE;
@@ -298,13 +297,13 @@ void sock_setnonblocking(p_sock ps) {
 int sock_gethostbyaddr(const char *addr, socklen_t len, struct hostent **hp) {
     *hp = gethostbyaddr(addr, len, AF_INET);
     if (*hp) return IO_DONE;
-    else return h_errno;
+    else return WSAGetLastError();
 }
 
 int sock_gethostbyname(const char *addr, struct hostent **hp) {
     *hp = gethostbyname(addr);
     if (*hp) return IO_DONE;
-    else return h_errno;
+    else return  WSAGetLastError();
 }
 
 /*-------------------------------------------------------------------------*\
diff --git a/test/dicttest.lua b/test/dicttest.lua
index fcdd61f..a37ec8d 100644
--- a/test/dicttest.lua
+++ b/test/dicttest.lua
@@ -1,3 +1,3 @@
 local dict = require"socket.dict"
 
-for i,v in dict.get("dict://localhost/d:banana") do print(v) end
+for i,v in dict.get("dict://dell-diego/d:banana") do print(v) end
diff --git a/test/ftptest.lua b/test/ftptest.lua
index f578c82..ef1bf0f 100644
--- a/test/ftptest.lua
+++ b/test/ftptest.lua
@@ -1,103 +1,110 @@
-local similar = function(s1, s2)
-    return 
-    string.lower(string.gsub(s1, "%s", "")) == 
-    string.lower(string.gsub(s2, "%s", ""))
+local socket = require("socket")
+local ftp = require("socket.ftp")
+local url = require("socket.url")
+local ltn12 = require("ltn12")
+
+-- override protection to make sure we see all errors
+--socket.protect = function(s) return s end
+
+dofile("testsupport.lua")
+
+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"
+
+
+-- a function that returns a directory listing
+local function nlst(u)
+    local t = {}
+    local p = url.parse(u)
+    p.command = "nlst"
+    p.sink = ltn12.sink.table(t)
+    local r, e = ftp.get(p)
+    return r and table.concat(t), e
 end
 
-local readfile = function(name)
-	local f = io.open(name, "r")
-	if not f then return nil end
-	local s = f:read("*a")
-	f:close()
-	return s
+-- function that removes a remote file
+local function dele(u)
+    local p = url.parse(u)
+    p.command = "dele"
+    p.argument = string.gsub(p.path, "^/", "")
+    if p.argumet == "" then p.argument = nil end
+    p.check = 250
+    return ftp.command(p)
 end
 
-local capture = function(cmd)
-	local f = io.popen(cmd)
-	if not f then return nil end
-	local s = f:read("*a")
-	f:close()
-	return s
-end
-
-local check = function(v, e, o)
-	e = e or "failed!"
-	o = o or "ok"
-	if v then print(o)
-	else print(e) os.exit() end
-end
-
--- needs an account luasocket:password
--- and some directories and files in ~ftp
-
-local index, err, saved, back, expected
-
-local t = socket.time()
-
-index = readfile("test/index.html")
+-- read index with CRLF convention
+index = readfile(index_file)
 
 io.write("testing wrong scheme: ")
-back, err = socket.ftp.get("wrong://banana.com/lixo")
-check(not back and err == "unknown scheme 'wrong'", err)
+back, err = ftp.get("wrong://banana.com/lixo")
+assert(not back and err == "wrong scheme 'wrong'", err)
+print("ok")
 
 io.write("testing invalid url: ")
-back, err = socket.ftp.get("localhost/dir1/index.html;type=i")
-local c, e = socket.connect("", 21)
-check(not back and err == e, err)
-
-io.write("testing anonymous file upload: ")
-os.remove("/var/ftp/pub/index.up.html")
-ret, err = socket.ftp.put("ftp://localhost/pub/index.up.html;type=i", index)
-saved = readfile("/var/ftp/pub/index.up.html")
-check(ret and not err and saved == index, err)
+back, err = ftp.get("localhost/dir1/index.html;type=i")
+assert(not back and err)
+print("ok")
 
 io.write("testing anonymous file download: ")
-back, err = socket.ftp.get("ftp://localhost/pub/index.up.html;type=i")
-check(not err and back == index, err)
+back, err = socket.ftp.get("ftp://" .. host .. "/pub/index.html;type=i")
+assert(not err and back == index, err)
+print("ok")
 
-io.write("testing no directory changes: ")
-back, err = socket.ftp.get("ftp://localhost/index.html;type=i")
-check(not err and back == index, err)
+io.write("erasing before upload: ")
+ret, err = dele("ftp://luasocket:password@" .. host .. "/index.up.html")
+if not ret then print(err) 
+else print("ok") end
 
-io.write("testing multiple directory changes: ")
-back, err = socket.ftp.get("ftp://localhost/pub/dir1/dir2/dir3/dir4/dir5/index.html;type=i")
-check(not err and back == index, err)
+io.write("testing upload: ")
+ret, err = ftp.put("ftp://luasocket:password@" .. host .. "/index.up.html;type=i", index)
+assert(ret and not err, err)
+print("ok")
 
-io.write("testing authenticated upload: ")
-os.remove("/home/luasocket/index.up.html")
-ret, err = socket.ftp.put("ftp://luasocket:password@localhost/index.up.html;type=i", index)
-saved = readfile("/home/luasocket/index.up.html")
-check(ret and not err and saved == index, err)
+io.write("downloading uploaded file: ")
+back, err = ftp.get("ftp://luasocket:password@" .. host .. "/index.up.html;type=i")
+assert(ret and not err and index == back, err)
+print("ok")
 
-io.write("testing authenticated download: ")
-back, err = socket.ftp.get("ftp://luasocket:password@localhost/index.up.html;type=i")
-check(not err and back == index, err)
+io.write("erasing after upload/download: ")
+ret, err = dele("ftp://luasocket:password@" .. host .. "/index.up.html")
+assert(ret and not err, err) 
+print("ok")
 
 io.write("testing weird-character translation: ")
-back, err = socket.ftp.get("ftp://luasocket:password@localhost/%2fvar/ftp/pub/index.html;type=i")
-check(not err and back == index, err)
+back, err = ftp.get("ftp://luasocket:password@" .. host .. "/%23%3f;type=i")
+assert(not err and back == index, err)
+print("ok")
 
 io.write("testing parameter overriding: ")
-back, err = socket.ftp.get {
-	url = "//stupid:mistake@localhost/index.html",
+local back = {}
+ret, err = ftp.get{
+	url = "//stupid:mistake@" .. host .. "/index.html",
 	user = "luasocket",
 	password = "password",
-	type = "i"
+	type = "i",
+    sink = ltn12.sink.table(back)
 }
-check(not err and back == index, err)
+assert(ret and not err and table.concat(back) == index, err)
+print("ok")
 
 io.write("testing upload denial: ")
-ret, err = socket.ftp.put("ftp://localhost/index.up.html;type=a", index)
-check(err, err)
+ret, err = ftp.put("ftp://" .. host .. "/index.up.html;type=a", index)
+assert(not ret and err, "should have failed")
+print(err)
 
 io.write("testing authentication failure: ")
-ret, err = socket.ftp.put("ftp://luasocket:wrong@localhost/index.html;type=a", index)
+ret, err = ftp.get("ftp://luasocket:wrong@".. host .. "/index.html;type=a")
+assert(not ret and err, "should have failed")
 print(err)
-check(not ret and err, err)
 
 io.write("testing wrong file: ")
-back, err = socket.ftp.get("ftp://localhost/index.wrong.html;type=a")
-check(err, err)
+back, err = ftp.get("ftp://".. host .. "/index.wrong.html;type=a")
+assert(not back and err, "should have failed")
+print(err)
 
 print("passed all tests")
-print(string.format("done in %.2fs", socket.time() - t))
+print(string.format("done in %.2fs", socket.gettime() - t))
diff --git a/test/httptest.lua b/test/httptest.lua
index 71021a4..cade837 100644
--- a/test/httptest.lua
+++ b/test/httptest.lua
@@ -23,7 +23,7 @@ http.TIMEOUT = 10
 local t = socket.gettime()
 
 host = host or "diego.student.princeton.edu"
-proxy = proxy or "http://localhost:3128"
+proxy = proxy or "http://dell-diego.cs.princeton.edu:3128"
 prefix = prefix or "/luasocket-test"
 cgiprefix = cgiprefix or "/luasocket-test-cgi"
 index_file = "test/index.html"
diff --git a/test/testclnt.lua b/test/testclnt.lua
index f838533..c2c782c 100644
--- a/test/testclnt.lua
+++ b/test/testclnt.lua
@@ -1,7 +1,7 @@
 local socket = require"socket"
 
 host = host or "localhost"
-port = port or "8080"
+port = port or "8383"
 
 function pass(...)
     local s = string.format(unpack(arg))
@@ -590,7 +590,6 @@ test_mixed(200)
 test_mixed(17)
 test_mixed(1)
 
-
 test("binary line")
 test_rawline(1)
 test_rawline(17)
@@ -630,14 +629,12 @@ test_nonblocking(200)
 test_nonblocking(17)
 test_nonblocking(1)
 
-
 test("total timeout on send")
 test_totaltimeoutsend(800091, 1, 3)
 test_totaltimeoutsend(800091, 2, 3)
 test_totaltimeoutsend(800091, 5, 2)
 test_totaltimeoutsend(800091, 3, 1)
 
-
 test("total timeout on receive")
 test_totaltimeoutreceive(800091, 1, 3)
 test_totaltimeoutreceive(800091, 2, 3)
diff --git a/test/testmesg.lua b/test/testmesg.lua
index e29b3cb..5350921 100644
--- a/test/testmesg.lua
+++ b/test/testmesg.lua
@@ -1,5 +1,5 @@
 -- load the smtp support and its friends
-local smtp = require("smtp")
+local smtp = require("socket.smtp")
 local mime = require("mime")
 local ltn12 = require("ltn12")
 
@@ -48,6 +48,11 @@ source = smtp.message{
   }
 }
 
+--[[
+sink = ltn12.sink.file(io.stdout)
+ltn12.pump.all(source, sink)
+]]
+
 -- finally send it
 r, e = smtp.send{
     rcpt = {"<diego@tecgraf.puc-rio.br>",
diff --git a/test/testsrvr.lua b/test/testsrvr.lua
index 23e3850..2408e83 100644
--- a/test/testsrvr.lua
+++ b/test/testsrvr.lua
@@ -1,6 +1,6 @@
 socket = require("socket");
 host = host or "localhost";
-port = port or "8080";
+port = port or "8383";
 server = assert(socket.bind(host, port));
 ack = "\n";
 while 1 do
diff --git a/test/tftptest.lua b/test/tftptest.lua
index edb6484..35078e8 100644
--- a/test/tftptest.lua
+++ b/test/tftptest.lua
@@ -12,7 +12,7 @@ function readfile(file)
     return a
 end
 
-host = host or "localhost"
+host = host or "diego.student.princeton.edu"
 retrieved, err = tftp.get("tftp://" .. host .."/index.html")
 assert(not err, err)
 original = readfile("test/index.html")