destroy instead of end http connection at end of pipeline

lib/http.js

@@ -606,7 +606,7 @@ function connectionListener (socket) {
     res.shouldKeepAlive = shouldKeepAlive;
     res.addListener('flush', function () {
       if (flushMessageQueue(socket, responses)) {
-        socket.end();
+        socket.destroy();
       }
     });
     responses.push(res);