From cfdca9f70257d328d4c4e401689b75cf8d0a9254 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

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

diff --git a/cmd/relaysrv/listener.go b/cmd/relaysrv/listener.go
index 2091b1dd6..88fe8fd0f 100644
--- a/cmd/relaysrv/listener.go
+++ b/cmd/relaysrv/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