From fccb9c0bf4e1c4b7f9b3ab98ab23d31f0acbc4d7 Mon Sep 17 00:00:00 2001
From: Jakob Borg <jakob@nym.se>
Date: Mon, 14 Sep 2015 13:44:47 +0200
Subject: [PATCH] Server should respond to ping

---
 listener.go | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/listener.go b/listener.go
index 2091b1dd..88fe8fd0 100644
--- a/listener.go
+++ b/listener.go
@@ -161,6 +161,15 @@ func protocolConnectionHandler(tcpConn net.Conn, config *tls.Config) {
 				}
 				conn.Close()
 
+			case protocol.Ping:
+				if err := protocol.WriteMessage(conn, protocol.Pong{}); err != nil {
+					if debug {
+						log.Println("Error writing pong:", err)
+					}
+					conn.Close()
+					continue
+				}
+
 			case protocol.Pong:
 				// Nothing