Revert "Add a non-dart:io WebSocket implementation to http_parser."

pkg/http_parser/test/web_socket_test.dart

-// Copyright (c) 2014, 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.
-
-library http_parser.web_socket_test;
-
-import 'dart:io';
-
-import 'package:http_parser/http_parser.dart';
-import 'package:unittest/unittest.dart';
-
-void main() {
-  test("a client can communicate with a WebSocket server", () {
-    return HttpServer.bind("localhost", 0).then((server) {
-      server.transform(new WebSocketTransformer()).listen((webSocket) {
-        webSocket.add("hello!");
-        webSocket.first.then((request) {
-          expect(request, equals("ping"));
-          webSocket.add("pong");
-          webSocket.close();
-        });
-      });
-
-      var client = new HttpClient();
-      return client.openUrl("GET", Uri.parse("http://localhost:${server.port}"))
-          .then((request) {
-        request.headers
-            ..set("Connection", "Upgrade")
-            ..set("Upgrade", "websocket")
-            ..set("Sec-WebSocket-Key", "x3JJHMbDL1EzLkh9GBhXDw==")
-            ..set("Sec-WebSocket-Version", "13");
-        return request.close();
-      }).then((response) => response.detachSocket()).then((socket) {
-        var webSocket = new CompatibleWebSocket(socket, serverSide: false);
-
-        var n = 0;
-        return webSocket.listen((message) {
-          if (n == 0) {
-            expect(message, equals("hello!"));
-            webSocket.add("ping");
-          } else if (n == 1) {
-            expect(message, equals("pong"));
-            webSocket.close();
-            server.close();
-          } else {
-            expect(false, reason: "Only expected two messages.");
-          }
-          n++;
-        }).asFuture();
-      });
-    });
-  });
-
-  test("a server can communicate with a WebSocket client", () {
-    return HttpServer.bind("localhost", 0).then((server) {
-      server.listen((request) {
-        var response = request.response;
-        response.statusCode = 101;
-        response.headers
-            ..set("Connection", "Upgrade")
-            ..set("Upgrade", "websocket")
-            ..set("Sec-WebSocket-Accept", CompatibleWebSocket.signKey(
-                request.headers.value('Sec-WebSocket-Key')));
-        response.contentLength = 0;
-        response.detachSocket().then((socket) {
-          var webSocket = new CompatibleWebSocket(socket);
-          webSocket.add("hello!");
-          webSocket.first.then((request) {
-            expect(request, equals("ping"));
-            webSocket.add("pong");
-            webSocket.close();
-          });
-        });
-      });
-
-      return WebSocket.connect('ws://localhost:${server.port}')
-          .then((webSocket) {
-        var n = 0;
-        return webSocket.listen((message) {
-          if (n == 0) {
-            expect(message, equals("hello!"));
-            webSocket.add("ping");
-          } else if (n == 1) {
-            expect(message, equals("pong"));
-            webSocket.close();
-            server.close();
-          } else {
-            expect(false, reason: "Only expected two messages.");
-          }
-          n++;
-        }).asFuture();
-      });
-    });
-  });
-}