Add bufferOutput to HttpServer, HttpResponse and HttpClientRequest.

tests/standalone/io/http_client_connect_test.dart

 // Copyright (c) 2013, 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.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 
 void testGetEmptyRequest() {
   HttpServer.bind("127.0.0.1", 0).then((server) {
     server.listen((request) {
       request.pipe(request.response);
     });
@@ skipping 93 matching lines @@
       .catchError((error) => asyncEnd(),
                   test: (error) => error is HttpException);
   });
 }
 
 void testGetDataServerForceClose() {
   asyncStart();
   var completer = new Completer();
   HttpServer.bind("127.0.0.1", 0).then((server) {
     server.listen((request) {
+      request.response.bufferOutput = false;
       request.response.contentLength = 100;
       request.response.write("data");
       request.response.write("more data");
       completer.future.then((_) => server.close(force: true));
     });
 
     var client = new HttpClient();
     client.get("127.0.0.1", server.port, "/")
       .then((request) => request.close())
       .then((response) {
@@ skipping 21 matching lines @@
     var client = new HttpClient();
     client.post("127.0.0.1", server.port, "/")
       .then((request) => request.close())
       .then((response) {
         response.listen((data) {}, onDone: server.close);
       });
   });
 }
 
 
+void testNoBuffer() {
+  asyncStart();
+  HttpServer.bind("127.0.0.1", 0).then((server) {
+    var response;
+    server.listen((request) {
+      response = request.response;
+      response.bufferOutput = false;
+      response.writeln('init');
+    });
+
+    var client = new HttpClient();
+    client.get("127.0.0.1", server.port, "/")
+      .then((request) => request.close())
+      .then((clientResponse) {
+        var iterator = new StreamIterator(
+            clientResponse.transform(UTF8.decoder)
+                          .transform(new LineSplitter()));
+        iterator.moveNext().then((hasValue) {
+          Expect.isTrue(hasValue);
+          Expect.equals('init', iterator.current);
+          int count = 0;
+          void run() {
+            if (count == 10) {
+              response.close();
+              iterator.moveNext().then((hasValue) {
+                Expect.isFalse(hasValue);
+                server.close();
+                asyncEnd();
+              });
+            } else {
+              response.writeln('output$count');

[Søren Gjesse, 2014/04/08 13:03:24]

He he the client writes to the response.

[Anders Johnsen, 2014/04/08 13:07:00]

The server response, yeah.

+              iterator.moveNext().then((hasValue) {
+                Expect.isTrue(hasValue);
+                Expect.equals('output$count', iterator.current);
+                count++;
+                run();
+              });
+            }
+          }
+          run();
+        });
+      });
+  });
+}
+
+
 void main() {
   testGetEmptyRequest();
   testGetDataRequest();
   testGetInvalidHost();
   testGetServerClose();
   testGetServerCloseNoKeepAlive();
   testGetServerForceClose();
-  // TODO(14953): This test can only run, when buffering is disabled.
-  // testGetDataServerForceClose();
+  testGetDataServerForceClose();
   testPostEmptyRequest();
+  testNoBuffer();
 }