From f2449642b789dabe3a03dbb97a4c1888f1e88f82 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tam=C3=A1s=20Gul=C3=A1csi?= <tgulacsi78@gmail.com>
Date: Wed, 11 Feb 2015 16:57:25 +0100
Subject: [PATCH] Allow non-standard namserver ports

For example Consul uses port 8600.
With this patch, I can add
  nameserver 127.0.0.1#8600
to my godns-specific resolv.conf.
---
 resolver.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/resolver.go b/resolver.go
index 9287428..b568833 100644
--- a/resolver.go
+++ b/resolver.go
@@ -49,10 +49,16 @@ func (r *Resolver) Lookup(net string, req *dns.Msg) (message *dns.Msg, err error
 
 }
 
+// Namservers return the array of nameservers, with port number appended.
+// '#' in the name is treated as port separator, as with dnsmasq.
 func (r *Resolver) Nameservers() (ns []string) {
 	for _, server := range r.config.Servers {
-		nameserver := server + ":" + r.config.Port
-		ns = append(ns, nameserver)
+		if i := strings.IndexByte(server, '#'); i > 0 {
+			server = server[:i] + ":" + server[i+1:]
+		} else {
+			server = server + ":" + r.config.Port
+		}
+		ns = append(ns, server)
 	}
 	return
 }