# HG changeset patch
# User Florian Zeitz <florob@babelmonkeys.de>
# Date 1371589340 -7200
# Node ID 94d5e2f33a1067cf4ba95b94c02f36dd7efb09d4
# Parent  3049137d14b69e980cd687292539f7732ebdeac7
net.dns: Support IPv6 addresses in resolv.conf [Backported from 0.10]

diff -r 3049137d14b6 -r 94d5e2f33a10 net/dns.lua
--- a/net/dns.lua	Sat May 18 21:41:17 2013 +0100
+++ b/net/dns.lua	Tue Jun 18 23:02:20 2013 +0200
@@ -14,6 +14,7 @@
 
 local socket = require "socket";
 local timer = require "util.timer";
+local new_ip = require "util.ip".new_ip;
 
 local _, windows = pcall(require, "util.windows");
 local is_windows = (_ and windows) or os.getenv("WINDIR");
@@ -599,11 +600,12 @@
 		if resolv_conf then
 			for line in resolv_conf:lines() do
 				line = line:gsub("#.*$", "")
-					:match('^%s*nameserver%s+(.*)%s*$');
+					:match('^%s*nameserver%s+([%x:%.]*)%s*$');
 				if line then
-					line:gsub("%f[%d.](%d+%.%d+%.%d+%.%d+)%f[^%d.]", function (address)
-						self:addnameserver(address)
-					end);
+					local ip = new_ip(line);
+					if ip then
+						self:addnameserver(ip.addr);
+					end
 				end
 			end
 		end
@@ -623,7 +625,12 @@
 	if sock then return sock; end
 
 	local ok, err;
-	sock, err = socket.udp();
+	local peer = self.server[servernum];
+	if peer:find(":") then
+		sock, err = socket.udp6();
+	else
+		sock, err = socket.udp();
+	end
 	if sock and self.socket_wrapper then sock, err = self.socket_wrapper(sock, self); end
 	if not sock then
 		return nil, err;
@@ -636,7 +643,7 @@
 	-- if so, try the next server
 	ok, err = sock:setsockname('*', 0);
 	if not ok then return self:servfail(sock, err); end
-	ok, err = sock:setpeername(self.server[servernum], 53);
+	ok, err = sock:setpeername(peer, 53);
 	if not ok then return self:servfail(sock, err); end
 	return sock;
 end