C# Client.Connection.Start方法代码示例

            public void GroupsReceiveMessages(HostType hostType, TransportType transportType)
            {
                using (var host = CreateHost(hostType, transportType))
                {
                    host.Initialize();

                    var connection = new Client.Connection(host.Url + "/groups");
                    var list = new List<string>();
                    connection.Received += data =>
                    {
                        list.Add(data);
                    };

                    connection.Start(host.Transport).Wait();

                    // Join the group
                    connection.SendWithTimeout(new { type = 1, group = "test" });

                    // Sent a message
                    connection.SendWithTimeout(new { type = 3, group = "test", message = "hello to group test" });

                    // Leave the group
                    connection.SendWithTimeout(new { type = 2, group = "test" });

                    // Send a message
                    connection.SendWithTimeout(new { type = 3, group = "test", message = "goodbye to group test" });

                    Thread.Sleep(TimeSpan.FromSeconds(5));

                    connection.Stop();

                    Assert.Equal(1, list.Count);
                    Assert.Equal("hello to group test", list[0]);
                }
            }

            public void ThrownWebExceptionShouldBeUnwrapped(HostType hostType, TransportType transportType)
            {
                using (var host = CreateHost(hostType, transportType))
                {
                    host.Initialize();

                    var connection = new Client.Connection(host.Url + "/ErrorsAreFun");

                    // Expecting 404
                    var aggEx = Assert.Throws<AggregateException>(() => connection.Start(host.Transport).Wait());

                    connection.Stop();

                    using (var ser = aggEx.GetError())
                    {
                        if (hostType == HostType.IISExpress)
                        {
                            Assert.Equal(System.Net.HttpStatusCode.InternalServerError, ser.StatusCode);
                        }
                        else
                        {
                            Assert.Equal(System.Net.HttpStatusCode.NotFound, ser.StatusCode);
                        }

                        Assert.NotNull(ser.ResponseBody);
                        Assert.NotNull(ser.Exception);
                    }
                }
            }

        public static IDisposable ClientGroupsSyncWithServerGroupsOnReconnectLongPolling()
        {
            var host = new MemoryHost();

            host.Configuration.KeepAlive = null;
            host.Configuration.ConnectionTimeout = TimeSpan.FromSeconds(5);
            host.Configuration.HeartbeatInterval = TimeSpan.FromSeconds(2);
            host.MapConnection<MyRejoinGroupConnection>("/groups");

            var connection = new Client.Connection("http://foo/groups");
            var inGroupOnReconnect = new List<bool>();
            var wh = new ManualResetEventSlim();

            connection.Received += message =>
            {
                Console.WriteLine(message);
                wh.Set();
            };

            connection.Reconnected += () =>
            {
                var inGroup = connection.Groups.Contains(typeof(MyRejoinGroupConnection).FullName + ".test");

                if (!inGroup)
                {
                    Debugger.Break();
                }

                inGroupOnReconnect.Add(inGroup);

                connection.Send(new { type = 3, group = "test", message = "Reconnected" }).Wait();
            };

            connection.Start(new Client.Transports.LongPollingTransport(host)).Wait();

            // Join the group
            connection.Send(new { type = 1, group = "test" }).Wait();

            Thread.Sleep(TimeSpan.FromSeconds(10));

            if (!wh.Wait(TimeSpan.FromSeconds(10)))
            {
                Debugger.Break();
            }

            Console.WriteLine(inGroupOnReconnect.Count > 0);
            Console.WriteLine(String.Join(", ", inGroupOnReconnect.Select(b => b.ToString())));

            connection.Stop();

            return host;
        }

            public void FailedNegotiateShouldNotBeActive()
            {
                var connection = new Client.Connection("http://test");
                var transport = new Mock<IClientTransport>();
                transport.Setup(m => m.Negotiate(connection))
                         .Returns(TaskAsyncHelper.FromError<NegotiationResponse>(new InvalidOperationException("Something failed.")));

                var aggEx = Assert.Throws<AggregateException>(() => connection.Start(transport.Object).Wait());
                var ex = aggEx.Unwrap();
                Assert.IsType(typeof(InvalidOperationException), ex);
                Assert.Equal("Something failed.", ex.Message);
                Assert.Equal(ConnectionState.Disconnected, connection.State);
            }

        public async Task FarmDisconnectRaisesUncleanDisconnects()
        {
            // Each node shares the same bus but are independent servers
            const int nodeCount = 3;
            var counters = new Infrastructure.PerformanceCounterManager();
            var configurationManager = new DefaultConfigurationManager();
            configurationManager.DisconnectTimeout = TimeSpan.FromSeconds(6);

            using (EnableDisposableTracing())
            using (var bus = new MessageBus(new StringMinifier(), new TraceManager(), counters, configurationManager, 5000))
            using (var loadBalancer = new LoadBalancer(nodeCount))
            {
                var broadcasters = new List<IConnection>();
                var disconnectCounter = new DisconnectCounter();
                loadBalancer.Configure(app =>
                {
                    var resolver = new DefaultDependencyResolver();

                    resolver.Register(typeof(IMessageBus), () => bus);
                    resolver.Register(typeof(IConfigurationManager), () => configurationManager);
                    resolver.Register(typeof(FarmConnection), () => new FarmConnection(disconnectCounter));

                    var connectionManager = resolver.Resolve<IConnectionManager>();
                    broadcasters.Add(connectionManager.GetConnectionContext<FarmConnection>().Connection);

                    app.MapSignalR<FarmConnection>("/echo", new ConnectionConfiguration
                    {
                        Resolver = resolver
                    });
                });

                var transport = new Client.Transports.LongPollingTransport(loadBalancer);
                var connection = new Client.Connection("http://goo/echo");

                await connection.Start(transport);

                for (int i = 0; i < nodeCount; i++)
                {
                    broadcasters[i].Broadcast(String.Format("From Node {0}: {1}", i, i + 1)).Wait();
                    await Task.Delay(TimeSpan.FromSeconds(1));
                }

                ((Client.IConnection)connection).Disconnect();

                await Task.Delay(TimeSpan.FromTicks(TimeSpan.FromSeconds(5).Ticks * nodeCount));

                Assert.Equal(0, disconnectCounter.CleanDisconnectCount);
                Assert.Equal(3, disconnectCounter.UncleanDisconnectCount);
            }
        }

        public void NegotiatePassesClientProtocolCorrectly(string clientProtocolParameter, string connectionQueryString)
        {
            var connection = new Client.Connection("http://test", connectionQueryString);

            try
            {
                connection.Start(new LongPollingTransport(new UrlInspectingHttpClient((url) =>
                {
                    Assert.True(url.Contains(clientProtocolParameter + connection.Protocol.ToString()));
                }))).Wait();
            }
            catch
            {
                // Swallow exceptions because the custom http client that we pass will throw unimplemented exceptions.
            }
        }

            public void GroupsAreNotReadOnConnectedAsync()
            {
                var host = new MemoryHost();
                host.MapConnection<MyConnection>("/echo");

                var connection = new Client.Connection("http://foo/echo");
                connection.Groups = new List<string> { typeof(MyConnection).FullName + ".test" };
                connection.Received += data =>
                {
                    Assert.False(true, "Unexpectedly received data");
                };

                connection.Start(host).Wait();

                Thread.Sleep(TimeSpan.FromSeconds(10));
            }

        private static void Main()
        {
            const string url = "http://localhost:8081/";

            var server = new Server(url);
            server.MapConnection<MyConnection>("/echo");
            server.Start();
            Console.WriteLine("Server running on {0}", url);

            var connection = new Client.Connection("http://localhost:8081/echo");
            connection.Received += Console.WriteLine;
            connection.StateChanged += change => Console.WriteLine(change.OldState + " => " + change.NewState);
            connection.Start().ContinueWith(task =>
                {
                    if (task.IsFaulted)
                    {
                        Console.WriteLine("Faulted:{0}",
                                          task.Exception != null
                                              ? task.Exception.GetBaseException().ToString()
                                              : "Task Faulted");
                    }
                    else
                    {
                        Console.WriteLine("Successfully Connected");

                        try
                        {
                            while (true)
                            {
                                //Just a sample to test the concept
                                Console.WriteLine("\nCalling Server {0} @ {1}", connection.Url, DateTime.Now);
                                connection.Send("Hello Server");
                                Thread.Sleep(2000);
                            }
                        }
                        catch (Exception exception)
                        {
                            Console.WriteLine(exception);
                        }
                    }
                });

            Console.ReadLine();
        }

            public void ThrownWebExceptionShouldBeUnwrapped()
            {
                var host = new MemoryHost();
                host.MapConnection<MyBadConnection>("/ErrorsAreFun");

                var connection = new Client.Connection("http://test/ErrorsAreFun");

                // Expecting 404
                var aggEx = Assert.Throws<AggregateException>(() => connection.Start(host).Wait());

                connection.Stop();

                using (var ser = aggEx.GetError())
                {
                    Assert.Equal(ser.StatusCode, HttpStatusCode.NotFound);
                    Assert.NotNull(ser.ResponseBody);
                    Assert.NotNull(ser.Exception);
                }
            }

            public void FailedStartShouldNotBeActive()
            {
                var connection = new Client.Connection("http://test");
                var transport = new Mock<IClientTransport>();
                transport.Setup(m => m.Negotiate(connection))
                         .Returns(TaskAsyncHelper.FromResult(new NegotiationResponse
                         {
                             ProtocolVersion = "1.2",
                             ConnectionId = "Something"
                         }));

                transport.Setup(m => m.Start(connection, null, It.IsAny<CancellationToken>()))
                         .Returns(TaskAsyncHelper.FromError(new InvalidOperationException("Something failed.")));

                var aggEx = Assert.Throws<AggregateException>(() => connection.Start(transport.Object).Wait());
                var ex = aggEx.Unwrap();
                Assert.IsType(typeof(InvalidOperationException), ex);
                Assert.Equal("Something failed.", ex.Message);
                Assert.Equal(ConnectionState.Disconnected, connection.State);
            }

            public void ClientGroupsSyncWithServerGroupsOnReconnect(HostType hostType, TransportType transportType)
            {
                using (var host = CreateHost(hostType, transportType))
                {
                    host.Initialize(keepAlive: 0,
                                    connectionTimeout: 5,
                                    hearbeatInterval: 2);

                    var connection = new Client.Connection(host.Url + "/rejoin-groups");
                    var inGroupOnReconnect = new List<bool>();
                    var wh = new ManualResetEventSlim();

                    connection.Received += message =>
                    {
                        Assert.Equal("Reconnected", message);
                        wh.Set();
                    };

                    connection.Reconnected += () =>
                    {
                        inGroupOnReconnect.Add(connection.Groups.Contains(typeof(MyRejoinGroupsConnection).FullName + ".test"));

                        connection.SendWithTimeout(new { type = 3, group = "test", message = "Reconnected" });
                    };

                    connection.Start(host.Transport).Wait();

                    // Join the group
                    connection.SendWithTimeout(new { type = 1, group = "test" });

                    // Force reconnect
                    Thread.Sleep(TimeSpan.FromSeconds(10));

                    Assert.True(wh.Wait(TimeSpan.FromSeconds(5)), "Client didn't receive message sent to test group.");
                    Assert.True(inGroupOnReconnect.Count > 0);
                    Assert.True(inGroupOnReconnect.All(b => b));

                    connection.Stop();
                }
            }

        public void DisconnectFiresForPersistentConnectionWhenClientGoesAway()
        {
            var host = new MemoryHost();
            host.MapConnection<MyConnection>("/echo");
            host.Configuration.DisconnectTimeout = TimeSpan.Zero;
            host.Configuration.HeartBeatInterval = TimeSpan.FromSeconds(5);
            var connectWh = new ManualResetEventSlim();
            var disconnectWh = new ManualResetEventSlim();
            host.DependencyResolver.Register(typeof(MyConnection), () => new MyConnection(connectWh, disconnectWh));
            var connection = new Client.Connection("http://foo/echo");

            // Maximum wait time for disconnect to fire (3 heart beat intervals)
            var disconnectWait = TimeSpan.FromTicks(host.Configuration.HeartBeatInterval.Ticks * 3);

            connection.Start(host).Wait();

            Assert.True(connectWh.Wait(TimeSpan.FromSeconds(10)), "Connect never fired");

            connection.Stop();

            Assert.True(disconnectWh.Wait(disconnectWait), "Disconnect never fired");
        }

            public void SendCanBeCalledAfterStateChangedEvent(HostType hostType, TransportType transportType)
            {
                using (var host = CreateHost(hostType, transportType))
                {
                    host.Initialize();

                    var connection = new Client.Connection(host.Url + "/multisend");
                    var results = new List<string>();
                    connection.Received += data =>
                    {
                        results.Add(data);
                    };

                    connection.StateChanged += stateChange =>
                    {
                        if (stateChange.NewState == Client.ConnectionState.Connected)
                        {
                            connection.SendWithTimeout("");
                        }
                    };

                    connection.Start(host.Transport).Wait();

                    Thread.Sleep(TimeSpan.FromSeconds(5));

                    connection.Stop();

                    Debug.WriteLine(String.Join(", ", results));

                    Assert.Equal(4, results.Count);
                }
            }

            public void ReconnectFiresAfterTimeOutSSE()
            {
                var host = new MemoryHost();
                var conn = new MyReconnect();
                host.Configuration.ConnectionTimeout = TimeSpan.FromSeconds(5);
                host.Configuration.HeartBeatInterval = TimeSpan.FromSeconds(1);
                host.DependencyResolver.Register(typeof(MyReconnect), () => conn);
                host.MapConnection<MyReconnect>("/endpoint");

                var connection = new Client.Connection("http://foo/endpoint");
                connection.Start(host).Wait();

                Thread.Sleep(TimeSpan.FromSeconds(15));

                Assert.Equal(2, conn.Reconnects);
            }

            public void SendToAllButCaller()
            {
                var host = new MemoryHost();
                host.MapConnection<FilteredConnection>("/filter");
                var connection1 = new Client.Connection("http://foo/filter");
                var connection2 = new Client.Connection("http://foo/filter");

                var wh1 = new ManualResetEventSlim(initialState: false);
                var wh2 = new ManualResetEventSlim(initialState: false);

                connection1.Received += data => wh1.Set();
                connection2.Received += data => wh2.Set();

                connection1.Start(host).Wait();
                connection2.Start(host).Wait();

                connection1.Send("test").Wait();

                Assert.False(wh1.WaitHandle.WaitOne(TimeSpan.FromSeconds(5)));
                Assert.True(wh2.WaitHandle.WaitOne(TimeSpan.FromSeconds(5)));

                connection1.Stop();
                connection2.Stop();
            }