Better error management on debugger proxy conn.

  * Listen for errors on the debugger proxy connections
  * Destroy debugger proxy connections after end.

Fixes #13

index.js

@@ -276,6 +276,9 @@ function closeDebuggerConnection() {
 
 		debuggerConnection.end();
 		localSocket.end();
+
+		debuggerConnection.destroy();
+		localSocket.destroy();
 	});
 
 	debuggerConnections = [];
@@ -293,6 +296,16 @@ net.createServer(function (localSocket) {
 	debuggerConnection.pipe(localSocket);
 	localSocket.pipe(debuggerConnection);
 
+	debuggerConnection.on('error', function (error) {
+		logger.warning('Error raised on the connection to the worker debug port', error);
+		closeDebuggerConnection();
+	});
+
+	localSocket.on('error', function (error) {
+		logger.warning('Error raised on the connection to the debugger proxy port', error);
+		closeDebuggerConnection();
+	});
+
 	debuggerConnections.push({ localSocket, debuggerConnection });
 }).listen(debug.port);