From 4670c9931e53a6bd1a22f22f4c577365b48dae1a Mon Sep 17 00:00:00 2001
From: nadoo <287492+nadoo@users.noreply.github.com>
Date: Sat, 13 Jan 2018 13:20:15 +0800
Subject: [PATCH] conn: add the ability to get outbound ip

---
 conn.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/conn.go b/conn.go
index d217c1f..6ce6c6d 100644
--- a/conn.go
+++ b/conn.go
@@ -3,6 +3,7 @@ package main
 import (
 	"bufio"
 	"io"
+	"log"
 	"net"
 	"time"
 )
@@ -79,3 +80,16 @@ func timedCopy(dst net.PacketConn, target net.Addr, src net.PacketConn, timeout
 		}
 	}
 }
+
+// OutboundIP returns preferred outbound ip of this machine
+func OutboundIP() net.IP {
+	conn, err := net.Dial("udp", "8.8.8.8:80")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer conn.Close()
+
+	localAddr := conn.LocalAddr().(*net.UDPAddr)
+
+	return localAddr.IP
+}