diff --git a/FIX b/FIX
index ed769d5..a811ec0 100644
--- a/FIX
+++ b/FIX
@@ -7,6 +7,7 @@ get rid of a = socket.try() in the manual, except for protected cases.
 get rid of "base." kludge
 check all "require("http")" etc in the manual.
 make sure sock_gethostname.*  only return success if the hp is not null!
-change 'l' prefix in C libraries to 'l-something'...
+change 'l' prefix in C libraries to 'c'
     don't forget the declarations in luasocket.h and mime.h!!!
 setpeername was using udp{unconnected}
+fixed a bug in http.lua that caused some requests to fail
diff --git a/samples/cddb.lua b/samples/cddb.lua
index 3e48cf6..482dc98 100644
--- a/samples/cddb.lua
+++ b/samples/cddb.lua
@@ -39,7 +39,7 @@ if code == 200 then
     if not data then 
         print(error or code)
     else
-        for i,v in data do 
+        for i,v in pairs(data) do 
             io.write(i, ': ', v, '\n') 
         end
     end
diff --git a/src/http.lua b/src/http.lua
index 38b93e2..669f54d 100644
--- a/src/http.lua
+++ b/src/http.lua
@@ -27,6 +27,51 @@ PORT = 80
 -- user agent field sent in request
 USERAGENT = socket.VERSION
 
+-----------------------------------------------------------------------------
+-- Extra sources and sinks
+-----------------------------------------------------------------------------
+socket.sourcet["http-chunked"] = function(sock)
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, { 
+        __call = function()
+            -- get chunk size, skip extention
+            local line, err = sock:receive()
+            if err then return nil, err end 
+            local size = base.tonumber(string.gsub(line, ";.*", ""), 16)
+            if not size then return nil, "invalid chunk size" end
+            -- was it the last chunk?
+            if size <= 0 then 
+                -- skip trailer headers, if any
+                local line, err = sock:receive()
+                while not err and line ~= "" do
+                    line, err = sock:receive()
+                end
+                return nil, err
+            else
+                -- get chunk and skip terminating CRLF
+                local chunk, err, part = sock:receive(size)
+                if chunk then sock:receive() end 
+                return chunk, err
+            end
+        end
+    })
+end
+
+socket.sinkt["http-chunked"] = function(sock)
+    return base.setmetatable({
+        getfd = function() return sock:getfd() end,
+        dirty = function() return sock:dirty() end
+    }, { 
+        __call = function(self, chunk, err)
+            if not chunk then return sock:send("0\r\n\r\n") end
+            local size = string.format("%X\r\n", string.len(chunk))
+            return sock:send(size ..  chunk .. "\r\n")
+        end
+    })
+end
+
 -----------------------------------------------------------------------------
 -- Low level HTTP API
 -----------------------------------------------------------------------------
@@ -70,7 +115,7 @@ function metat.__index:sendheaders(headers)
 end
 
 function metat.__index:sendbody(headers, source, step)
-    source = source or ltn12.source.empty()
+    source = source or ltn12.source.empty() 
     step = step or ltn12.pump.step
     -- if we don't know the size in advance, send chunked and hope for the best
     local mode = "http-chunked"
@@ -155,7 +200,7 @@ end
 local function adjustheaders(headers, host)
     local lower = {}
     -- override with user values
-    for i,v in (headers or lower) do
+    for i,v in pairs(headers or lower) do
         lower[string.lower(i)] = v
     end
     lower["user-agent"] = lower["user-agent"] or USERAGENT
@@ -175,7 +220,7 @@ local function adjustrequest(reqt)
     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
+    for i,v in pairs(reqt) do nreqt[i] = v end
     socket.try(nreqt.host, "invalid host '" .. base.tostring(nreqt.host) .. "'")
     -- compute uri if user hasn't overriden
     nreqt.uri = reqt.uri or adjusturi(nreqt)
@@ -238,7 +283,7 @@ function trequest(reqt)
     local h = open(reqt.host, reqt.port, reqt.connect)
     h:sendrequestline(reqt.method, reqt.uri)
     h:sendheaders(reqt.headers)
-    h:sendbody(reqt.headers, reqt.source, reqt.step)
+    if reqt.source then h:sendbody(reqt.headers, reqt.source, reqt.step) end
     local code, headers, status
     code, status = h:receivestatusline()
     headers = h:receiveheaders()
diff --git a/src/mime.lua b/src/mime.lua
index 6492a96..6ef82b8 100644
--- a/src/mime.lua
+++ b/src/mime.lua
@@ -15,9 +15,9 @@ local mime = require("cmime")
 module("mime")
 
 -- encode, decode and wrap algorithm tables
-mime.encodet = {}
-mime.decodet = {}
-mime.wrapt = {}
+encodet = {}
+decodet = {}
+wrapt = {}
 
 -- creates a function that chooses a filter by name from a given table 
 local function choose(table)
@@ -32,21 +32,21 @@ local function choose(table)
 end
 
 -- define the encoding filters
-mime.encodet['base64'] = function()
+encodet['base64'] = function()
     return ltn12.filter.cycle(b64, "")
 end
 
-mime.encodet['quoted-printable'] = function(mode)
+encodet['quoted-printable'] = function(mode)
     return ltn12.filter.cycle(qp, "", 
         (mode == "binary") and "=0D=0A" or "\r\n")
 end
 
 -- define the decoding filters
-mime.decodet['base64'] = function()
+decodet['base64'] = function()
     return ltn12.filter.cycle(unb64, "")
 end
 
-mime.decodet['quoted-printable'] = function()
+decodet['quoted-printable'] = function()
     return ltn12.filter.cycle(unqp, "")
 end
 
@@ -60,29 +60,29 @@ local function format(chunk)
 end 
 
 -- define the line-wrap filters
-mime.wrapt['text'] = function(length)
+wrapt['text'] = function(length)
     length = length or 76
     return ltn12.filter.cycle(wrp, length, length) 
 end
-mime.wrapt['base64'] = wrapt['text']
-mime.wrapt['default'] = wrapt['text']
+wrapt['base64'] = wrapt['text']
+wrapt['default'] = wrapt['text']
 
-mime.wrapt['quoted-printable'] = function()
+wrapt['quoted-printable'] = function()
     return ltn12.filter.cycle(qpwrp, 76, 76) 
 end
 
 -- function that choose the encoding, decoding or wrap algorithm
-mime.encode = choose(encodet) 
-mime.decode = choose(decodet)
-mime.wrap = choose(wrapt)
+encode = choose(encodet) 
+decode = choose(decodet)
+wrap = choose(wrapt)
 
 -- define the end-of-line normalization filter
-function mime.normalize(marker)
+function normalize(marker)
     return ltn12.filter.cycle(eol, 0, marker)
 end
 
 -- high level stuffing filter
-function mime.stuff()
+function stuff()
     return ltn12.filter.cycle(dot, 2)
 end
 
diff --git a/src/select.c b/src/select.c
index efdbdff..e2cd91d 100644
--- a/src/select.c
+++ b/src/select.c
@@ -124,7 +124,7 @@ static int collect_fd(lua_State *L, int tab, int max_fd,
             break;
         }
         fd = getfd(L);
-        if (fd > 0) {
+        if (fd >= 0) {
             FD_SET(fd, set);
             if (max_fd < fd) max_fd = fd;
             lua_pushnumber(L, fd);
@@ -150,7 +150,7 @@ static int check_dirty(lua_State *L, int tab, int dtab, fd_set *set) {
             break;
         }
         fd = getfd(L);
-        if (fd > 0 && dirty(L)) {
+        if (fd >= 0 && dirty(L)) {
             lua_pushnumber(L, ++ndirty);
             lua_pushvalue(L, -2);
             lua_settable(L, dtab);
diff --git a/src/smtp.lua b/src/smtp.lua
index 12c2195..944a40f 100644
--- a/src/smtp.lua
+++ b/src/smtp.lua
@@ -211,7 +211,7 @@ end
 -- set defaul headers
 local function adjust_headers(mesgt)
     local lower = {}
-    for i,v in (mesgt.headers or lower) do
+    for i,v in base.pairs(mesgt.headers or lower) do
         lower[string.lower(i)] = v
     end
     lower["date"] = lower["date"] or 
diff --git a/src/socket.lua b/src/socket.lua
index f3563e7..9a523fe 100644
--- a/src/socket.lua
+++ b/src/socket.lua
@@ -62,19 +62,6 @@ socket.sinkt = {}
 
 socket.BLOCKSIZE = 2048
 
-socket.sinkt["http-chunked"] = function(sock)
-    return base.setmetatable({
-        getfd = function() return sock:getfd() end,
-        dirty = function() return sock:dirty() end
-    }, { 
-        __call = function(self, chunk, err)
-            if not chunk then return sock:send("0\r\n\r\n") end
-            local size = string.format("%X\r\n", string.len(chunk))
-            return sock:send(size ..  chunk .. "\r\n")
-        end
-    })
-end
-
 socket.sinkt["close-when-done"] = function(sock)
     return base.setmetatable({
         getfd = function() return sock:getfd() end,
@@ -140,34 +127,6 @@ socket.sourcet["until-closed"] = function(sock)
     })
 end
 
-socket.sourcet["http-chunked"] = function(sock)
-    return base.setmetatable({
-        getfd = function() return sock:getfd() end,
-        dirty = function() return sock:dirty() end
-    }, { 
-        __call = function()
-            -- get chunk size, skip extention
-            local line, err = sock:receive()
-            if err then return nil, err end 
-            local size = base.tonumber(string.gsub(line, ";.*", ""), 16)
-            if not size then return nil, "invalid chunk size" end
-            -- was it the last chunk?
-            if size <= 0 then 
-                -- skip trailer headers, if any
-                local line, err = sock:receive()
-                while not err and line ~= "" do
-                    line, err = sock:receive()
-                end
-                return nil, err
-            else
-                -- get chunk and skip terminating CRLF
-                local chunk, err = sock:receive(size)
-                if chunk then sock:receive() end 
-                return chunk, err
-            end
-        end
-    })
-end
 
 socket.sourcet["default"] = socket.sourcet["until-closed"]
 
diff --git a/src/url.lua b/src/url.lua
index 7aa3760..f29ecc8 100644
--- a/src/url.lua
+++ b/src/url.lua
@@ -119,7 +119,7 @@ end
 function parse(url, default)
     -- initialize default parameters
     local parsed = {}
-    for i,v in (default or parsed) do parsed[i] = v end
+    for i,v in base.pairs(default or parsed) do parsed[i] = v end
     -- empty url is parsed to nil
     if not url or url == "" then return nil, "invalid url" end
     -- remove whitespace
diff --git a/test/dicttest.lua b/test/dicttest.lua
index 7ac7811..9ab9c41 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:teste") do print(v) end
+for i,v in pairs(dict.get("dict://localhost/d:teste")) do print(v) end
diff --git a/test/httptest.lua b/test/httptest.lua
index 2335fcb..963b947 100644
--- a/test/httptest.lua
+++ b/test/httptest.lua
@@ -32,7 +32,7 @@ index_file = "test/index.html"
 index = readfile(index_file)
 
 local check_result = function(response, expect, ignore)
-	for i,v in response do
+	for i,v in pairs(response) do
 		if not ignore[i] then
 			if v ~= expect[i] then 
                 local f = io.open("err", "w")
@@ -42,7 +42,7 @@ local check_result = function(response, expect, ignore)
             end
 		end
 	end
-	for i,v in expect do
+	for i,v in pairs(expect) do
 		if not ignore[i] then
 			if v ~= response[i] then 
                 local f = io.open("err", "w")
diff --git a/test/smtptest.lua b/test/smtptest.lua
index e812737..d0c938c 100644
--- a/test/smtptest.lua
+++ b/test/smtptest.lua
@@ -70,7 +70,7 @@ end
 local check_headers = function(sent, got)
     sent = sent or {}
     got = got or {}
-    for i,v in sent do
+    for i,v in pairs(sent) do
         if not similar(v, got[i]) then fail("header " .. v .. "failed!") end
     end
 end
diff --git a/test/urltest.lua b/test/urltest.lua
index 570b52e..ae54db9 100644
--- a/test/urltest.lua
+++ b/test/urltest.lua
@@ -75,7 +75,7 @@ local check_parse_url = function(gaba)
 		if v ~= parsed[i] then
 			io.write("parse: In test for '", url, "' expected ", i, " = '", 
            	    v, "' but got '", tostring(parsed[i]), "'\n")
-			for i,v in parsed do print(i,v) end
+			for i,v in pairs(parsed) do print(i,v) end
 			exit()
 		end
 	end
@@ -83,7 +83,7 @@ local check_parse_url = function(gaba)
 		if v ~= gaba[i] then
 			io.write("parse: In test for '", url, "' expected ", i, " = '", 
            	    tostring(gaba[i]), "' but got '", v, "'\n")
-			for i,v in parsed do print(i,v) end
+			for i,v in pairs(parsed) do print(i,v) end
 			exit()
 		end
 	end