Handle closing of HTTP client and server

tests/standalone/src/io/HttpShutdownTest.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.
+  HttpServer server = new HttpServer();
+  server.listen("127.0.0.1", 0, totalConnections);
+  server.onRequest = (HttpRequest request, HttpResponse response) {
+    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.outputStream.close();
+    };
+    conn.onResponse = (HttpClientResponse response) {
+      count++;
+      if (count == totalConnections) {
+        client.shutdown();
+        server.close();
+      }
+    };
+  }
+}
+
+
+void test2(int totalConnections) {
+  // Server which responds without waiting for request body.
+  HttpServer server = new HttpServer();
+  server.listen("127.0.0.1", 0, totalConnections);
+  server.onRequest = (HttpRequest request, HttpResponse response) {
+    response.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.writeString("Hello, world!");
+      request.outputStream.close();
+    };
+    conn.onResponse = (HttpClientResponse response) {
+      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, totalConnections);
+  server.onRequest = (HttpRequest request, HttpResponse response) {
+    request.inputStream.onClosed = () {
+      response.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.writeString("Hello, world!");
+      request.outputStream.close();
+    };
+    conn.onResponse = (HttpClientResponse response) {
+      count++;
+      if (count == totalConnections) {
+        client.shutdown();
+        server.close();
+      }
+    };
+  }
+}
+
+
+void main() {
+  test1(1);
+  test1(10);
+  test2(1);
+  test2(10);
+  test3(1);
+  test3(10);
+}