test: fix http-incoming-pipelined-socket-destroy

The test was calling server.close() after write on the socket
had completed. However the fact that the write had completed was
not valid indication that the server had received the data.

This would result in a premutaure closing of the server and
an ECONNRESET event on the client.

test/simple/test-http-incoming-pipelined-socket-destroy.js

@@ -33,11 +33,13 @@ var server = http.createServer(function(req, res) {
     case '/1':
       return setTimeout(function() {
         req.socket.destroy();
+        server.emit('requestDone');
       });
 
     case '/2':
       return process.nextTick(function() {
         res.destroy();
+        server.emit('requestDone');
       });
 
     // in one case, actually send a response in 2 chunks
@@ -45,18 +47,19 @@ var server = http.createServer(function(req, res) {
       res.write('hello ');
       return setTimeout(function() {
         res.end('world!');
+        server.emit('requestDone');
       });
 
     default:
-      return res.destroy();
+      res.destroy();
+      server.emit('requestDone');
   }
 });
 
 
 // Make a bunch of requests pipelined on the same socket
-function generator() {
-  var reqs = [ 3, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 ];
-  return reqs.map(function(r) {
+function generator(seeds) {
+  return seeds.map(function(r) {
     return 'GET /' + r + ' HTTP/1.1\r\n' +
            'Host: localhost:' + common.PORT + '\r\n' +
            '\r\n' +
@@ -66,13 +69,18 @@ function generator() {
 
 
 server.listen(common.PORT, function() {
+  var seeds = [ 3, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4 ];
   var client = net.connect({ port: common.PORT });
+  var done = 0;
+  server.on('requestDone', function() {
+    if (++done == seeds.length) {
+      server.close();
+    }
+  });
 
   // immediately write the pipelined requests.
   // Some of these will not have a socket to destroy!
-  client.write(generator(), function() {
-    server.close();
-  });
+  client.write(generator(seeds));
 });
 
 process.on('exit', function(c) {