Merge IO v2 branch to bleeding edge

tests/standalone/io/http_headers_state_test.dart

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// 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.
 //
 
 import "dart:isolate";
 import "dart:io";
 
 void test(int totalConnections, [String body]) {
-  HttpServer server = new HttpServer();
-  server.onError = (e) => Expect.fail("Unexpected error $e");
-  server.listen("127.0.0.1", 0, backlog: totalConnections);
-  server.defaultRequestHandler = (HttpRequest request, HttpResponse response) {
-    // Cannot mutate request headers.
-    Expect.throws(() => request.headers.add("X-Request-Header", "value"),
-                  (e) => e is HttpException);
-    Expect.equals("value", request.headers.value("X-Request-Header"));
-    request.inputStream.onData = request.inputStream.read;
-    request.inputStream.onClosed = () {
-      OutputStream stream = response.outputStream;
-      // Can still mutate response headers as long as no data has been sent.
-      response.headers.add("X-Response-Header", "value");
-      if (body != null) {
-        stream.writeString(body);
+  HttpServer.bind().then((server) {
+
+    server.listen((HttpRequest request) {
+      HttpResponse response = request.response;
+      // Cannot mutate request headers.
+      Expect.throws(() => request.headers.add("X-Request-Header", "value"),
+                    (e) => e is HttpException);
+      Expect.equals("value", request.headers.value("X-Request-Header"));
+      request.listen((_) {}, onDone: () {
+        // Can still mutate response headers as long as no data has been sent.
+        response.headers.add("X-Response-Header", "value");
+        if (body != null) {
+          response.addString(body);
+          // Cannot mutate response headers when data has been sent.
+          Expect.throws(() => request.headers.add("X-Request-Header", "value2"),
+                        (e) => e is HttpException);
+        }
+        response..close();
         // Cannot mutate response headers when data has been sent.
-        Expect.throws(() => request.headers.add("X-Request-Header", "value2"),
+        Expect.throws(() => request.headers.add("X-Request-Header", "value3"),
                       (e) => e is HttpException);
-      }
-      stream.close();
-      // Cannot mutate response headers when data has been sent.
-      Expect.throws(() => request.headers.add("X-Request-Header", "value3"),
-                    (e) => e is HttpException);
-    };
-  };
+      });
+    });
 
-  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.onError = (e) => Expect.fail("Unexpected error $e");
-    conn.onRequest = (HttpClientRequest request) {
-      if (body != null) {
-        request.contentLength = -1;
-      }
-      OutputStream stream = request.outputStream;
-      // Can still mutate request headers as long as no data has been sent.
-      request.headers.add("X-Request-Header", "value");
-      if (body != null) {
-        stream.writeString(body);
-        // Cannot mutate request headers when data has been sent.
-        Expect.throws(() => request.headers.add("X-Request-Header", "value2"),
-                      (e) => e is HttpException);
-      }
-      stream.close();
-      // Cannot mutate request headers when data has been sent.
-      Expect.throws(() => request.headers.add("X-Request-Header", "value3"),
-                    (e) => e is HttpException);
-    };
-    conn.onResponse = (HttpClientResponse response) {
-      // Cannot mutate response headers.
-      Expect.throws(() => response.headers.add("X-Response-Header", "value"),
-                   (e) => e is HttpException);
-      Expect.equals("value", response.headers.value("X-Response-Header"));
-      response.inputStream.onData = response.inputStream.read;
-      response.inputStream.onClosed = () {
-        // Do not close the connections before we have read the full response
-        // bodies for all connections.
-        if (++count == totalConnections) {
-          client.shutdown();
-          server.close();
-        }
-      };
-    };
-  }
+    int count = 0;
+    HttpClient client = new HttpClient();
+    for (int i = 0; i < totalConnections; i++) {
+      client.get("127.0.0.1", server.port, "/")
+        .then((HttpClientRequest request) {
+          if (body != null) {
+            request.contentLength = -1;
+          }
+          // Can still mutate request headers as long as no data has been sent.
+          request.headers.add("X-Request-Header", "value");
+          if (body != null) {
+            request.addString(body);
+            // Cannot mutate request headers when data has been sent.
+            Expect.throws(
+                () => request.headers.add("X-Request-Header", "value2"),
+                (e) => e is HttpException);
+          }
+          request.close();
+          // Cannot mutate request headers when data has been sent.
+          Expect.throws(() => request.headers.add("X-Request-Header", "value3"),
+                        (e) => e is HttpException);
+          return request.response;
+        })
+        .then((HttpClientResponse response) {
+          // Cannot mutate response headers.
+          Expect.throws(
+              () => response.headers.add("X-Response-Header", "value"),
+              (e) => e is HttpException);
+          Expect.equals("value", response.headers.value("X-Response-Header"));
+          response.listen((_) {}, onDone: () {
+            // Do not close the connections before we have read the
+            // full response bodies for all connections.
+            if (++count == totalConnections) {
+              client.close();
+              server.close();
+            }
+          });
+        });
+    }
+
+  });
 }
 
 void main() {
   test(5);
   test(5, "Hello and goodbye");
 }