From: Matt Joiner <anacrolix@gmail.com>
Date: Mon, 27 Jun 2016 05:45:15 +0000 (+1000)
Subject: Fix crash causing deadlock in connection writer when no messages have been posted yet
X-Git-Tag: v1.0.0~672
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=874bba43f8e946efa5a2737c139f3d8dcd3f8d9d;p=btrtrc.git

Fix crash causing deadlock in connection writer when no messages have been posted yet
---

diff --git a/connection.go b/connection.go
index 366adbe4..3f0c4756 100644
--- a/connection.go
+++ b/connection.go
@@ -408,7 +408,7 @@ func (cn *connection) writer(keepAliveTimeout time.Duration) {
 	keepAliveTimer := time.NewTimer(keepAliveTimeout)
 	for {
 		cn.mu().Lock()
-		for cn.outgoingUnbufferedMessages.Len() != 0 {
+		for cn.outgoingUnbufferedMessages != nil && cn.outgoingUnbufferedMessages.Len() != 0 {
 			msg := cn.outgoingUnbufferedMessages.Remove(cn.outgoingUnbufferedMessages.Front()).(pp.Message)
 			cn.mu().Unlock()
 			b, err := msg.MarshalBinary()