Making progress toward a release

Documented headers.lua
Update copyright date everywhere
Remove RCSID from files
Move version back to 2.1 rather than 2.1.1
Fixed url package to support ipv6 hosts
Changed "domain" to "family" in tcp and udp structures
Implemented getfamily methods

src/url.lua

@@ -2,7 +2,6 @@
 -- URI parsing, composition and relative URL resolution
 -- LuaSocket toolkit.
 -- Author: Diego Nehab
--- RCS ID: $Id: url.lua,v 1.38 2006/04/03 04:45:42 diego Exp $
 -----------------------------------------------------------------------------
 
 -----------------------------------------------------------------------------
@@ -16,7 +15,7 @@ module("socket.url")
 -----------------------------------------------------------------------------
 -- Module version
 -----------------------------------------------------------------------------
-_VERSION = "URL 1.0.1"
+_VERSION = "URL 1.0.2"
 
 -----------------------------------------------------------------------------
 -- Encodes a string into its escaped hexadecimal representation
@@ -142,7 +141,7 @@ function parse(url, default)
         parsed.authority = n
         return ""
     end)
-    -- get query stringing
+    -- get query string
     url = string.gsub(url, "%?(.*)", function(q)
         parsed.query = q
         return ""
@@ -158,9 +157,12 @@ function parse(url, default)
     if not authority then return parsed end
     authority = string.gsub(authority,"^([^@]*)@",
         function(u) parsed.userinfo = u; return "" end)
-    authority = string.gsub(authority, ":([^:]*)$",
+    authority = string.gsub(authority, ":([^:%]]*)$",
         function(p) parsed.port = p; return "" end)
-    if authority ~= "" then parsed.host = authority end
+    if authority ~= "" then 
+        -- IPv6?
+        parsed.host = string.match(authority, "^%[(.+)%]$") or authority 
+    end
     local userinfo = parsed.userinfo
     if not userinfo then return parsed end
     userinfo = string.gsub(userinfo, ":([^:]*)$",
@@ -185,6 +187,9 @@ function build(parsed)
     local authority = parsed.authority
     if parsed.host then
         authority = parsed.host
+        if string.find(authority, ":") then -- IPv6?
+            authority = "[" .. authority .. "]"
+        end
         if parsed.port then authority = authority .. ":" .. parsed.port end
         local userinfo = parsed.userinfo
         if parsed.user then