From a5bf37056f638d566430a804e22cecc99e85df07 Mon Sep 17 00:00:00 2001
From: Nonoo <nonoo@nonoo.hu>
Date: Wed, 21 Oct 2020 14:29:15 +0200
Subject: [PATCH] Use random local UDP ports

---
 streamcommon.go | 21 +--------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/streamcommon.go b/streamcommon.go
index e15d47e..da69ceb 100644
--- a/streamcommon.go
+++ b/streamcommon.go
@@ -88,11 +88,7 @@ func (s *streamCommon) open(name string, portNumber int) {
 		exit(err)
 	}
 
-	// Use the same local and remote port. The radio does not handle different ports well.
-	l := net.UDPAddr{
-		Port: portNumber,
-	}
-	s.conn, err = net.DialUDP("udp", &l, raddr)
+	s.conn, err = net.DialUDP("udp", nil, raddr)
 	if err != nil {
 		exit(err)
 	}
@@ -109,21 +105,6 @@ func (s *streamCommon) open(name string, portNumber int) {
 	s.readChan = make(chan []byte)
 	s.readerClosedChan = make(chan bool)
 	go s.reader()
-
-	if r := s.pkt7.tryReceive(300*time.Millisecond, s); s.pkt7.isPkt7(r) {
-		s.remoteSID = binary.BigEndian.Uint32(r[8:12])
-		s.gotRemoteSID = true
-		log.Print(s.name + "/closing running stream")
-		s.sendDisconnect()
-		time.Sleep(time.Second)
-
-		s.close()
-		s.remoteSID = 0
-		s.gotRemoteSID = false
-		s.pkt7.sendSeq = 0
-		s.pkt7.lastConfirmedSeq = 0
-		s.open(name, portNumber)
-	}
 }
 
 func (s *streamCommon) close() {