Created a new synchronous http client using RawSynchronousSockets.

test/http_basic_test.dart

+// Copyright (c) 2017, 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:async";
+import "dart:isolate";
+import "dart:io";
+import "package:sync_http/sync_http.dart";
+import "package:test/test.dart";
+
+typedef void ServerCallback(int port);
+
+class TestServerMain {
+  TestServerMain() : _statusPort = new ReceivePort();
+
+  ReceivePort _statusPort; // Port for receiving messages from the server.
+  SendPort _serverPort; // Port for sending messages to the server.
+  ServerCallback _startedCallback;
+
+  void setServerStartedHandler(ServerCallback startedCallback) {
+    _startedCallback = startedCallback;
+  }
+
+  void start() {
+    ReceivePort receivePort = new ReceivePort();
+    Isolate.spawn(startTestServer, receivePort.sendPort);
+    receivePort.first.then((port) {
+      _serverPort = port;
+
+      // Send server start message to the server.
+      var command = new TestServerCommand.start();
+      port.send([command, _statusPort.sendPort]);
+    });
+
+    // Handle status messages from the server.
+    _statusPort.listen((var status) {
+      if (status.isStarted) {
+        _startedCallback(status.port);
+      }
+    });
+  }
+
+  void close() {
+    // Send server stop message to the server.
+    _serverPort.send([new TestServerCommand.stop(), _statusPort.sendPort]);
+    _statusPort.close();
+  }
+}
+
+enum TestServerCommandState {
+  start,
+  stop,
+}
+
+class TestServerCommand {
+  TestServerCommand.start() : _command = TestServerCommandState.start;
+  TestServerCommand.stop() : _command = TestServerCommandState.stop;
+
+  bool get isStart => (_command == TestServerCommandState.start);
+  bool get isStop => (_command == TestServerCommandState.stop);
+
+  TestServerCommandState _command;
+}
+
+enum TestServerStatusState {
+  started,
+  stopped,
+  error,
+}
+
+class TestServerStatus {
+  TestServerStatus.started(this._port) : _state = TestServerStatusState.started;
+  TestServerStatus.stopped() : _state = TestServerStatusState.stopped;
+  TestServerStatus.error() : _state = TestServerStatusState.error;
+
+  bool get isStarted => (_state == TestServerStatusState.started);
+  bool get isStopped => (_state == TestServerStatusState.stopped);
+  bool get isError => (_state == TestServerStatusState.error);
+
+  int get port => _port;
+
+  TestServerStatusState _state;
+  int _port;
+}
+
+void startTestServer(SendPort replyTo) {
+  var server = new TestServer();
+  server.init();
+  replyTo.send(server.dispatchSendPort);
+}
+
+class TestServer {
+  // Echo the request content back to the response.
+  void _echoHandler(HttpRequest request) {
+    var response = request.response;
+    if (request.method != "POST") {
+      response.close();
+      return;
+    }
+    response.contentLength = request.contentLength;
+    request.listen((List<int> data) {
+      var string = new String.fromCharCodes(data);
+      response.write(string);
+      response.close();
+    });
+  }
+
+  // Echo the request content back to the response.
+  void _zeroToTenHandler(HttpRequest request) {
+    var response = request.response;
+    String msg = "01234567890";
+    if (request.method != "GET") {
+      response.close();
+      return;
+    }
+    response.contentLength = msg.length;
+    response.write(msg);
+    response.close();
+  }
+
+  // Return a 404.
+  void _notFoundHandler(HttpRequest request) {
+    var response = request.response;
+    response.statusCode = HttpStatus.NOT_FOUND;
+    String msg = "Page not found";
+    response.contentLength = msg.length;
+    response.headers.set("Content-Type", "text/html; charset=UTF-8");
+    response.write(msg);
+    response.close();
+  }
+
+  // Return a 301 with a custom reason phrase.
+  void _reasonForMovingHandler(HttpRequest request) {
+    var response = request.response;
+    response.statusCode = HttpStatus.MOVED_PERMANENTLY;
+    response.reasonPhrase = "Don't come looking here any more";
+    response.close();
+  }
+
+  // Check the "Host" header.
+  void _hostHandler(HttpRequest request) {
+    var response = request.response;
+    expect(1, equals(request.headers["Host"].length));
+    expect("www.dartlang.org:1234", equals(request.headers["Host"][0]));
+    expect("www.dartlang.org", equals(request.headers.host));
+    expect(1234, equals(request.headers.port));
+    response.statusCode = HttpStatus.OK;
+    response.close();
+  }
+
+  void _hugeHandler(HttpRequest request) {
+    var response = request.response;
+    List<int> expected =
+        new List<int>.generate((1 << 20), (i) => (i + 1) % 256);
+    String msg = expected.toString();
+    response.contentLength = msg.length;
+    response.statusCode = HttpStatus.OK;
+    response.write(msg);
+    response.close();
+  }
+
+  void init() {
+    // Setup request handlers.
+    _requestHandlers = new Map();
+    _requestHandlers["/echo"] = _echoHandler;
+    _requestHandlers["/0123456789"] = _zeroToTenHandler;
+    _requestHandlers["/reasonformoving"] = _reasonForMovingHandler;
+    _requestHandlers["/host"] = _hostHandler;
+    _requestHandlers["/huge"] = _hugeHandler;
+    _dispatchPort = new ReceivePort();
+    _dispatchPort.listen(dispatch);
+  }
+
+  SendPort get dispatchSendPort => _dispatchPort.sendPort;
+
+  void dispatch(var message) {
+    TestServerCommand command = message[0];
+    SendPort replyTo = message[1];
+    if (command.isStart) {
+      try {
+        HttpServer.bind("127.0.0.1", 0).then((server) {
+          _server = server;
+          _server.listen(_requestReceivedHandler);
+          replyTo.send(new TestServerStatus.started(_server.port));
+        });
+      } catch (e) {
+        replyTo.send(new TestServerStatus.error());
+      }
+    } else if (command.isStop) {
+      _server.close();
+      _dispatchPort.close();
+      replyTo.send(new TestServerStatus.stopped());
+    }
+  }
+
+  void _requestReceivedHandler(HttpRequest request) {
+    var requestHandler = _requestHandlers[request.uri.path];
+    if (requestHandler != null) {
+      requestHandler(request);
+    } else {
+      _notFoundHandler(request);
+    }
+  }
+
+  HttpServer _server; // HTTP server instance.
+  ReceivePort _dispatchPort;
+  Map _requestHandlers;
+}
+
+Future testStartStop() async {
+  Completer completer = new Completer();
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    testServerMain.close();
+    completer.complete();
+  });
+  testServerMain.start();
+  return completer.future;
+}
+
+Future testGET() async {
+  Completer completer = new Completer();
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    var request =
+        SyncHttpClient.getUrl(new Uri.http("127.0.0.1:$port", "/0123456789"));
+    var response = request.close();
+    expect(HttpStatus.OK, equals(response.statusCode));
+    expect(11, equals(response.contentLength));
+    expect("01234567890", equals(response.body));
+    testServerMain.close();
+    completer.complete();
+  });
+  testServerMain.start();
+  return completer.future;
+}
+
+Future testPOST() async {
+  Completer completer = new Completer();
+  String data = "ABCDEFGHIJKLMONPQRSTUVWXYZ";
+  final int kMessageCount = 10;
+
+  TestServerMain testServerMain = new TestServerMain();
+
+  void runTest(int port) {
+    int count = 0;
+    void sendRequest() {
+      var request =
+          SyncHttpClient.postUrl(new Uri.http("127.0.0.1:$port", "/echo"));
+      request.write(data);
+      var response = request.close();
+      expect(HttpStatus.OK, equals(response.statusCode));
+      expect(data, equals(response.body));
+      count++;
+      if (count < kMessageCount) {
+        sendRequest();
+      } else {
+        testServerMain.close();
+        completer.complete();
+      }
+    }
+
+    sendRequest();
+  }
+
+  testServerMain.setServerStartedHandler(runTest);
+  testServerMain.start();
+  return completer.future;
+}
+
+Future test404() async {
+  Completer completer = new Completer();
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    var request = SyncHttpClient
+        .getUrl(new Uri.http("127.0.0.1:$port", "/thisisnotfound"));
+    var response = request.close();
+    expect(HttpStatus.NOT_FOUND, equals(response.statusCode));
+    expect("Page not found", equals(response.body));
+    testServerMain.close();
+    completer.complete();
+  });
+  testServerMain.start();
+  return completer.future;
+}
+
+Future testReasonPhrase() async {
+  Completer completer = new Completer();
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    var request = SyncHttpClient
+        .getUrl(new Uri.http("127.0.0.1:$port", "/reasonformoving"));
+    var response = request.close();
+    expect(HttpStatus.MOVED_PERMANENTLY, equals(response.statusCode));
+    expect(
+        "Don't come looking here any more\r\n", equals(response.reasonPhrase));
+    testServerMain.close();
+    completer.complete();
+  });
+  testServerMain.start();
+  return completer.future;
+}
+
+Future testHuge() async {
+  Completer completer = new Completer();
+  TestServerMain testServerMain = new TestServerMain();
+  testServerMain.setServerStartedHandler((int port) {
+    var request =
+        SyncHttpClient.getUrl(new Uri.http("127.0.0.1:$port", "/huge"));
+    var response = request.close();
+    String expected =
+        new List<int>.generate((1 << 20), (i) => (i + 1) % 256).toString();
+    expect(HttpStatus.OK, equals(response.statusCode));
+    expect(expected.length, equals(response.contentLength));
+    expect(expected.toString(), equals(response.body));
+    testServerMain.close();
+    completer.complete();
+  });
+  testServerMain.start();
+  return completer.future;
+}
+
+void main() {
+  test("Simple server test", () async {
+    await testStartStop();
+  });
+  test("Sync HTTP GET test", () async {
+    await testGET();
+  });
+  test("Sync HTTP POST test", () async {
+    await testPOST();
+  });
+  test("Sync HTTP 404 test", () async {
+    await test404();
+  });
+  test("Sync HTTP moved test", () async {
+    await testReasonPhrase();
+  });
+  test("Sync HTTP huge test", () async {
+    await testHuge();
+  });
+}