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	conn: change OutboundIP to return string
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								conn.go
									
									
									
									
									
								
							@ -3,7 +3,6 @@ package main
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import (
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	"bufio"
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	"io"
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	"log"
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	"net"
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	"time"
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)
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@ -82,14 +81,13 @@ func timedCopy(dst net.PacketConn, target net.Addr, src net.PacketConn, timeout
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}
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// OutboundIP returns preferred outbound ip of this machine
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func OutboundIP() net.IP {
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func OutboundIP() string {
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	conn, err := net.Dial("udp", "8.8.8.8:80")
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	if err != nil {
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		log.Fatal(err)
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		logf("get outbound ip error: %s", err)
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		return ""
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	}
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	defer conn.Close()
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	localAddr := conn.LocalAddr().(*net.UDPAddr)
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	return localAddr.IP
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	return conn.LocalAddr().(*net.UDPAddr).IP.String()
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}
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