Add a web socket client

tests/standalone/io/web_socket_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:io");
+
+void testRequestResponseClientCloses(
+    int totalConnections, int closeStatus, String closeReason) {
+  HttpServer server = new HttpServer();
+  HttpClient client = new HttpClient();
+
+  server.onError = (e) => Expect.fail("Unexpected error $e");
+  server.listen("127.0.0.1", 0, totalConnections);
+
+  // Create a web socket handler and set is as the HTTP server default
+  // handler.
+  WebSocketHandler wsHandler = new WebSocketHandler();
+  wsHandler.onOpen = (WebSocketConnection conn) {
+    var count = 0;
+    conn.onMessage = (Object message) => conn.send(message);
+    conn.onClosed = (status, reason) {
+      Expect.equals(closeStatus, status);
+      Expect.equals(closeReason, reason);
+    };
+    conn.onError = (e) => Expect.fail("Unexpected error $e");

[Mads Ager (google), 2012/05/02 08:18:17]

Since the error handler throws by default now we could leave this out. But it
might be nice to have it explict?

[Søren Gjesse, 2012/05/02 10:22:45]

No, not realy - removed.

+  };
+  server.defaultRequestHandler = wsHandler.onRequest;
+
+  int closeCount = 0;
+  String messageText = "Hello, world!";
+  for (int i = 0; i < totalConnections; i++) {
+    int messageCount = 0;
+    HttpClientConnection conn = client.get("127.0.0.1", server.port, "/");
+    WebSocketClientConnection wsconn = new WebSocketClientConnection(conn);
+    wsconn.onOpen = () {

[Mads Ager (google), 2012/05/02 08:18:17]

Could be a one-liner.

[Søren Gjesse, 2012/05/02 10:22:45]

Done.

+      wsconn.send(messageText);
+    };
+    wsconn.onMessage = (message) {
+      messageCount++;
+      if (messageCount < 10) {
+        Expect.equals(messageText, message);
+        wsconn.send(message);
+      } else {
+        wsconn.close(closeStatus, closeReason);
+      }
+    };
+    wsconn.onClosed = (status, reason) {
+      Expect.equals(closeStatus, status);
+      Expect.isNull(reason);
+      closeCount++;
+      if (closeCount == totalConnections) {
+        client.shutdown();
+        server.close();
+      }
+    };
+    wsconn.onError = (e) => Expect.fail("Unexpected client error $e");
+  }
+}
+
+
+void testRequestResponseServerCloses(
+    int totalConnections, int closeStatus, String closeReason) {
+  HttpServer server = new HttpServer();
+  HttpClient client = new HttpClient();
+
+  server.onError = (e) => Expect.fail("Unexpected error $e");
+  server.listen("127.0.0.1", 0, totalConnections);
+
+  // Create a web socket handler and set is as the HTTP server default
+  // handler.
+  int closeCount = 0;
+  WebSocketHandler wsHandler = new WebSocketHandler();
+  wsHandler.onOpen = (WebSocketConnection conn) {
+    String messageText = "Hello, world!";
+    int messageCount = 0;
+    conn.onMessage = (Object message) {
+      messageCount++;
+      if (messageCount < 10) {
+        Expect.equals(messageText, message);
+        conn.send(message);
+      } else {
+        conn.close(closeStatus, closeReason);
+      }
+    };
+    conn.onClosed = (status, reason) {
+      Expect.equals(closeStatus, status);
+      Expect.isNull(reason);
+      closeCount++;
+      if (closeCount == totalConnections) {
+        client.shutdown();
+        server.close();
+      }
+    };
+    conn.onError = (e) => Expect.fail("Unexpected error $e");
+    conn.send(messageText);
+  };
+  server.defaultRequestHandler = wsHandler.onRequest;
+
+  for (int i = 0; i < totalConnections; i++) {
+    HttpClientConnection conn = client.get("127.0.0.1", server.port, "/");
+    WebSocketClientConnection wsconn = new WebSocketClientConnection(conn);
+    wsconn.onMessage = (message) => wsconn.send(message);
+    wsconn.onClosed = (status, reason) {
+      Expect.equals(closeStatus, status);
+      Expect.equals(closeReason, reason);
+    };
+    wsconn.onError = (e) => Expect.fail("Unexpected client error $e");
+  }
+}
+
+void testNoUpgrade() {
+  HttpServer server = new HttpServer();
+  HttpClient client = new HttpClient();
+
+  server.onError = (e) => Expect.fail("Unexpected error $e");
+  server.listen("127.0.0.1", 0, 5);
+
+  // Create a server which always responds with a redirect.
+  server.defaultRequestHandler = (request, response) {
+    response.statusCode = HttpStatus.MOVED_PERMANENTLY;
+    response.outputStream.close();
+  };
+
+  HttpClientConnection conn = client.get("127.0.0.1", server.port, "/");
+  WebSocketClientConnection wsconn = new WebSocketClientConnection(conn);
+  wsconn.onNoUpgrade = (response) {
+    Expect.equals(HttpStatus.MOVED_PERMANENTLY, response.statusCode);
+    client.shutdown();
+    server.close();
+  };
+  wsconn.onError = (e) => Expect.fail("Unexpected client error $e");
+}
+
+void testUsePOST() {
+  HttpServer server = new HttpServer();
+  HttpClient client = new HttpClient();
+
+  server.onError = (e) => Expect.fail("Unexpected error $e");
+  server.listen("127.0.0.1", 0, 5);
+
+  // Create a web socket handler and set is as the HTTP server default
+  // handler.
+  int closeCount = 0;
+  WebSocketHandler wsHandler = new WebSocketHandler();
+  wsHandler.onOpen = (WebSocketConnection conn) {
+    Expect.fail("No connection expected");
+  };
+  server.defaultRequestHandler = wsHandler.onRequest;
+
+  HttpClientConnection conn = client.post("127.0.0.1", server.port, "/");
+  WebSocketClientConnection wsconn = new WebSocketClientConnection(conn);
+  wsconn.onNoUpgrade = (response) {
+    Expect.equals(HttpStatus.BAD_REQUEST, response.statusCode);
+    client.shutdown();
+    server.close();
+  };
+  wsconn.onError = (e) => Expect.fail("Unexpected client error $e");
+}
+
+main() {
+  testRequestResponseClientCloses(2, null, null);
+  testRequestResponseClientCloses(2, 3001, null);
+  testRequestResponseClientCloses(2, 3002, "Got tired");
+  testRequestResponseServerCloses(1, null, null);
+  testRequestResponseServerCloses(2, 3001, null);
+  testRequestResponseServerCloses(2, 3002, "Got tired");
+  testNoUpgrade();
+  testUsePOST();
+}