From 7e5dd243733d73a24ec080a61d1bfe69063f30f1 Mon Sep 17 00:00:00 2001
From: JoshVanL <vleeuwenjoshua@gmail.com>
Date: Thu, 14 Mar 2019 17:50:21 +0000
Subject: [PATCH] Don't close closed channel in tunnel

Signed-off-by: JoshVanL <vleeuwenjoshua@gmail.com>
---
 pkg/tarmak/ssh/tunnel.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkg/tarmak/ssh/tunnel.go b/pkg/tarmak/ssh/tunnel.go
index 2586454efb..a0bdf876c9 100644
--- a/pkg/tarmak/ssh/tunnel.go
+++ b/pkg/tarmak/ssh/tunnel.go
@@ -57,6 +57,7 @@ func (s *SSH) Tunnel(dest, destPort, localPort string, daemonize bool) interface
 		destPort:  destPort,
 		daemonize: daemonize,
 		localPort: localPort,
+		doneCh:    make(chan struct{}),
 	}
 
 	s.tunnels = append(s.tunnels, tunnel)
@@ -213,7 +214,12 @@ func (t *Tunnel) handleTimeout() {
 	t.connsLock.Unlock()
 
 	t.cleanup()
-	close(t.doneCh)
+
+	select {
+	case <-t.doneCh:
+	default:
+		close(t.doneCh)
+	}
 }
 
 func (t *Tunnel) Done() <-chan struct{} {