From eedb6a1c30b5316a972d49a138003361664e736b Mon Sep 17 00:00:00 2001 From: Bryan Boreham Date: Fri, 3 Oct 2014 14:12:16 +0100 Subject: [PATCH] Add command-line flag to use a different port --- dns/main.go | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/dns/main.go b/dns/main.go index 76319a0f..9f1c00ea 100644 --- a/dns/main.go +++ b/dns/main.go @@ -1,6 +1,8 @@ package main import ( + "flag" + "fmt" "github.com/miekg/dns" "github.com/zettio/weavedns" "log" @@ -62,6 +64,13 @@ func handleLocal(w dns.ResponseWriter, r *dns.Msg) { } func main() { + var ( + dnsPort int + ) + + flag.IntVar(&dnsPort, "dnsport", 53, "port to listen to dns requests (defaults to 53)") + flag.Parse() + LocalServeMux := dns.NewServeMux() LocalServeMux.HandleFunc("local", handleLocal) go weavedns.ListenHttp(zone) @@ -80,7 +89,8 @@ func main() { go dns.ActivateAndServe(nil, conn, MDNSServeMux) - err = dns.ListenAndServe(":53", "udp", LocalServeMux) + address := fmt.Sprintf(":%d", dnsPort) + err = dns.ListenAndServe(address, "udp", LocalServeMux) if err != nil { log.Fatal(err) }