Reapply "Fixes to eventhandler and HTTP""

tests/standalone/io/http_shutdown_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 
 import "dart:isolate";
 import "dart:io";
 
 void test1(int totalConnections) {
   // Server which just closes immediately.
@@ skipping 16 matching lines @@
         if (count == totalConnections) {
           client.shutdown();
           server.close();
         }
       };
     };
   }
 }
 
 
-void test2(int totalConnections) {
+void test2(int totalConnections, int outputStreamWrites) {
   // Server which responds without waiting for request body.
   HttpServer server = new HttpServer();
   server.listen("127.0.0.1", 0, backlog: totalConnections);
   server.defaultRequestHandler = (HttpRequest request, HttpResponse response) {
     response.outputStream.writeString("!dlrow ,olleH");
     response.outputStream.close();
   };
 
   int count = 0;
   HttpClient client = new HttpClient();
   for (int i = 0; i < totalConnections; i++) {
     HttpClientConnection conn = client.get("127.0.0.1", server.port, "/");
     conn.onRequest = (HttpClientRequest request) {
       request.contentLength = -1;
-      request.outputStream.writeString("Hello, world!");
+      for (int i = 0; i < outputStreamWrites; i++)
+        request.outputStream.writeString("Hello, world!");
       request.outputStream.close();
     };
     conn.onResponse = (HttpClientResponse response) {
       response.inputStream.onData = response.inputStream.read;
       response.inputStream.onClosed = () {
         count++;
         if (count == totalConnections) {
           client.shutdown();
           server.close();
         }
       };
     };
+    conn.onError = (e) {
+      count++;
+      if (count == totalConnections) {
+        client.shutdown();
+        server.close();
+      }
+    };
   }
 }
 
 
 void test3(int totalConnections) {
   // Server which responds when request body has been received.
   HttpServer server = new HttpServer();
   server.listen("127.0.0.1", 0, backlog: totalConnections);
   server.defaultRequestHandler = (HttpRequest request, HttpResponse response) {
     request.inputStream.onData = () {
@@ skipping 86 matching lines @@
         timer.cancel();
       }
     }
   });
 }
 
 
 void main() {
   test1(1);
   test1(10);
-  test2(1);
-  test2(10);
+  test2(1, 10);
+  test2(10, 10);
+  test2(10, 1000);
   test3(1);
   test3(10);
   test4();
   test5(1);
   test5(10);
 }