public override Task ProcessRequest(ITransportConnection connection)
{
return _context.Request.AcceptWebSocketRequest(socket =>
{
_socket = socket;
socket.OnClose = clean =>
{
// If we performed a clean disconnect then we go through the normal disconnect routine. However,
// If we performed an unclean disconnect we want to mark the connection as "not alive" and let the
// HeartBeat clean it up. This is to maintain consistency across the transports.
if (clean)
{
OnDisconnect();
}
_isAlive = false;
};
socket.OnMessage = message =>
{
OnReceiving(message);
if (Received != null)
{
Received(message).Catch();
}
};
return ProcessRequestCore(connection);
});
}
public override Task ProcessRequest(ITransportConnection connection)
{
if (IsAbortRequest)
{
return connection.Abort(ConnectionId);
}
else
{
var webSocketRequest = _context.Request as IWebSocketRequest;
// Throw if the server implementation doesn't support websockets
if (webSocketRequest == null)
{
throw new InvalidOperationException(Resources.Error_WebSocketsNotSupported);
}
Connection = connection;
InitializePersistentState();
return webSocketRequest.AcceptWebSocketRequest(socket =>
{
_socket = socket;
socket.OnClose = _closed;
socket.OnMessage = _message;
socket.OnError = _error;
return ProcessReceiveRequest(connection);
},
InitializeTcs.Task);
}
}
public override Task ProcessRequest(ITransportConnection connection)
{
return _context.Request.AcceptWebSocketRequest(socket =>
{
_socket = socket;
socket.OnClose = () =>
{
OnDisconnect();
_isAlive = false;
};
socket.OnMessage = message =>
{
OnReceiving(message);
if (Received != null)
{
Received(message).Catch();
}
};
return ProcessRequestCore(connection);
});
}
public ConnectionRun(RunData runData)
: base(runData)
{
var connectionManager = new ConnectionManager(Resolver);
_context = connectionManager.GetConnectionContext<StressConnection>();
_transportConnection = (ITransportConnection)_context.Connection;
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return base.InitializeResponse(connection)
.Then(() =>
{
Context.Response.ContentType = "text/event-stream";
return Context.Response.WriteAsync("data: initialized\n\n");
});
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return(base.InitializeResponse(connection)
.Then(initScript =>
{
Context.Response.ContentType = "text/html";
Context.Response.WriteAsync(initScript);
},
_initPrefix + Context.Request.QueryString["frameId"] + _initSuffix));
}
public override void SetUp()
{
base.SetUp();
_websocket = null;
_connection = null;
_client = null;
_fayeServerProcess = new ThinServerProcess(thinPort: THIN_SERVER_PORT,
workingDirectory: WorkingDirectory);
_socatInterceptor = null;
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return base.InitializeResponse(connection)
.Then(initScript =>
{
Context.Response.ContentType = "text/html";
Context.Response.WriteAsync(initScript);
},
_initPrefix + Context.Request.QueryString["frameId"] + _initSuffix);
}
private static void ReceiveLoop(ITransportConnection connection, string messageId)
{
connection.ReceiveAsync(messageId, CancellationToken.None, maxMessages: 5000).Then(r =>
{
Interlocked.Add(ref _received, r.TotalCount);
Interlocked.Add(ref _avgLastReceivedCount, r.TotalCount);
ReceiveLoop(connection, r.MessageId);
});
}
protected void SendConnect(string clientId,
ITransportConnection connection)
{
var message = new ConnectRequestMessage(clientId: clientId,
connectionType: ONLY_SUPPORTED_CONNECTION_TYPE,
id: MessageCounter++);
var json = Converter.Serialize(message);
connection.Send(json);
}
public static async ValueTask <ITransportChannel> CreateChannelAsync(this ITransportConnection connection)
{
var maybeChannel = await TryCreateChannelAsync(connection).ConfigureAwait(false);
if (!maybeChannel.HasValue)
{
throw new OperationCanceledException();
}
return(maybeChannel.Value);
}
public static async Task CompleteAsync(this ITransportConnection connection)
{
connection.TryComplete();
do
{
while (connection.IncomingChannels.TryRead(out _))
{
}
} while (await connection.IncomingChannels.WaitReadAvailableAsync().ConfigureAwait(false));
await connection.Completion.ConfigureAwait(false);
}
public static async Task CompleteAsync(this ITransportConnection connection)
{
connection.TryComplete();
while (await connection.IncomingChannels.WaitForNextSafeAsync().ConfigureAwait(false))
{
while (connection.IncomingChannels.TryReadSafe(out _))
{
}
}
await connection.Completion.ConfigureAwait(false);
}
public override Task ProcessRequest(ITransportConnection connection)
{
if (IsAbortRequest)
{
return(connection.Abort(ConnectionId));
}
else
{
return(AcceptWebSocketRequest(connection));
}
}
public FayeClient(IWebSocket socket,
string connectionId = "standard") : base(messageCounter: FIRST_MESSAGE_INDEX)
{
_connectionId = connectionId;
_transportClient = new WebsocketTransportClient(socket,
connectionId);
_advice = DefaultAdvice;
_transportConnection = null;
_logger = LoggerFetcher.GetLogger(connectionId,
this);
}
public ClientConnection(ITransportConnection connection, ClientConnectionDescriptor clientInfo)
{
Id = connection.Id;
_log = LogManager.GetLogger <ClientConnection>(Id.ToString());
Info = clientInfo;
_connection = connection;
var listen = new ProducingChannel <ITransportChannel>(1, ListenAsync);
IncomingChannels = listen;
Completion = TaskRunner.RunInBackground(ProcessAsync);
}
public async Task Connection_dies_reestablishes_after_message_send()
{
// arrange
const int inputPort = THIN_SERVER_PORT + 1;
_fayeServerProcess.StartThinServer();
_socatInterceptor = StartWritableSocket(hostname: "localhost",
inputPort: inputPort);
const string urlThroughSocat = "ws://localhost:8133/bayeux";
var socket = new WebSocketClient(uri: urlThroughSocat);
SetupWebSocket(socket);
InstantiateTransportClient();
_connection = await _client.Connect();
var tcs = new TaskCompletionSource <string>();
_connection.MessageReceived += (sender,
args) => tcs.SetResult(args.Message);
var lostTcs = new TaskCompletionSource <bool>();
_connection.ConnectionLost += (sender,
args) => lostTcs.SetResult(true);
// act
// ReSharper disable once CSharpWarnings::CS4014
Task.Factory.StartNew(() =>
{
Logger.Info("Killing socat");
_socatInterceptor.Kill();
Logger.Info("Sleeping");
Thread.Sleep(5.Seconds());
Logger.Info("Restarting socat");
_socatInterceptor = StartWritableSocket(hostname: "localhost",
inputPort: inputPort);
});
Logger.Info("Waiting for websocket to acknowledge disconnect");
await lostTcs.Task.WithTimeout(t => t,
20.Seconds());
Logger.Info("Disconnect acknowledged, sending message");
_connection.Send(TestMessageStr);
// assert
var response = await tcs.Task.WithTimeout(s => s,
15.Seconds());
dynamic responseObj = JsonConvert.DeserializeObject <JArray>(response)[0];
bool successful = responseObj.successful;
successful
.Should()
.BeTrue();
}
public async Task <AppConnectionDescriptor> AuthenticateAsync(ITransportConnection connection)
{
Log.Trace("Accepting new connection {0}", connection.Id);
var channel = await connection.IncomingChannels.ReadAsync().ConfigureAwait(false);
var frame = await channel.In.ReadAsync().ConfigureAwait(false);
using (var payload = frame.Payload)
using (var connectRequest = _serializer.DeserializeConnectRequest(payload))
{
if (!_registryService.IsApplicationDefined(connectRequest.ApplicationId))
{
throw new BrokerException($"Connection rejected because application id is unknown to broker: {connectRequest.ApplicationId}");
}
if (!_connectionTracker.IsAppInstanceRegistered(connectRequest.ApplicationInstanceId))
{
Log.Debug("Connection with unknown application instance id: "
+ $"ApplicationInstanceId={connectRequest.ApplicationInstanceId}, ApplicationId={connectRequest.ApplicationId}");
_connectionTracker.ReportConnectionError(new AppConnectionDescriptor(
UniqueId.Empty,
connectRequest.ApplicationId,
connectRequest.ApplicationInstanceId,
connection.TransportType));
if (_features.HasFlag(BrokerFeatures.CheckAppInstanceId))
{
throw new BrokerException("Connection rejected because application instance id is unknown to broker: "
+ $"ApplicationInstanceId={connectRequest.ApplicationInstanceId}, ApplicationId={connectRequest.ApplicationId}");
}
}
using (var connectResponse = _messageFactory.CreateConnectResponse(connection.Id))
{
var serializedResponse = _serializer.Serialize(connectResponse);
try
{
Log.Trace("Sending connect response ({0} bytes): {1}", connectResponse, serializedResponse.Count);
await channel.Out.WriteAsync(new TransportMessageFrame(serializedResponse)).ConfigureAwait(false);
}
catch
{
serializedResponse.Dispose();
throw;
}
channel.Out.TryComplete();
await channel.Completion.ConfigureAwait(false);
return(new AppConnectionDescriptor(
connectResponse.ConnectionId,
connectRequest.ApplicationId,
connectRequest.ApplicationInstanceId,
connection.TransportType));
}
}
}
private Task ProcessConnectRequest(ITransportConnection connection)
{
HeartBeat.AddConnection(this);
if (Connected != null)
{
// Return a task that completes when the connected event task & the receive loop task are both finished
return(TaskAsyncHelper.Interleave(ProcessReceiveRequest, Connected, connection));
}
return(ProcessReceiveRequest(connection));
}
private static Task SendCommand(ITransportConnection connection, string connectionId, CommandType commandType)
{
var command = new Command
{
CommandType = commandType
};
var message = new ConnectionMessage(PrefixHelper.GetConnectionId(connectionId),
command);
return(connection.Send(message));
}
private void ProcessMessages(ITransportConnection connection, Func <Task> postReceive, Action endRequest)
{
IDisposable subscription = null;
var wh = new ManualResetEventSlim(initialState: false);
// End the request if the connection end token is triggered
CancellationTokenRegistration registration = ConnectionEndToken.Register(() =>
{
wh.Wait();
subscription.Dispose();
});
subscription = connection.Receive(LastMessageId, response =>
{
// We need to wait until post receive has been called
wh.Wait();
response.TimedOut = IsTimedOut;
if (response.Disconnect ||
response.TimedOut ||
response.Aborted ||
ConnectionEndToken.IsCancellationRequested)
{
if (response.Aborted)
{
// If this was a clean disconnect raise the event.
OnDisconnect();
}
endRequest();
registration.Dispose();
subscription.Dispose();
return(TaskAsyncHelper.False);
}
else
{
return(Send(response).Then(() => TaskAsyncHelper.True));
}
},
MaxMessages);
if (postReceive != null)
{
postReceive().Catch(_allErrorsTotalCounter, _allErrorsPerSecCounter)
.ContinueWith(task => wh.Set());
}
else
{
wh.Set();
}
}
private static Task SendCommand(ITransportConnection connection, string connectionId, CommandType commandType)
{
var command = new Command
{
CommandType = commandType
};
var message = new ConnectionMessage(PrefixHelper.GetConnectionId(connectionId),
command);
return connection.Send(message);
}
private void TransportLayer_OnConnectionClosed(ITransportConnection connection, ConnectionClosedReason reason)
{
if (connection.ConnectedTo != ServerId)
{
MelonLogger.LogError("Connection with non-server ID was closed - but we're a client???");
return;
}
ui.SetState(MultiplayerUIState.PreConnect);
MelonLogger.LogError("Got P2P connection error " + reason.ToString());
Disconnect();
}
private async Task ProcessAsync(ITransportConnection connection)
{
try
{
await _buffer.Out.WriteAsync(connection).ConfigureAwait(false);
}
catch (Exception ex)
{
connection.TryTerminate(ex);
throw;
}
}
private static void ReceiveLoop(CountdownEvent connectionCountDown, ITransportConnection connection, string messageId, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
connectionCountDown.Signal();
return;
}
connection.ReceiveAsync(messageId, cancellationToken, maxMessages: 5000).Then(r =>
{
ReceiveLoop(connectionCountDown, connection, r.MessageId, cancellationToken);
});
}
public async Task <IClientConnection> ConnectAsync(ClientOptions options, CancellationToken cancellationToken = default)
{
Log.Trace("Establishing new connection with broker");
ITransportConnection transportConnection = null;
try
{
transportConnection = await options.Transport.CreateAsync(cancellationToken);
Log.Debug("Connection {0} established. Performing handshake: {1}", transportConnection.Id, options);
var channel = await transportConnection.CreateChannelAsync().ConfigureAwait(false);
var protocolSerializer = options.Protocol.Serializer;
using (var connectRequest = options.Protocol.MessageFactory.CreateConnectRequest(options.ApplicationId, options.ApplicationInstanceId))
{
var serializedRequest = protocolSerializer.Serialize(connectRequest);
try
{
await channel.Out.WriteAsync(new TransportMessageFrame(serializedRequest)).ConfigureAwait(false);
channel.Out.TryComplete();
}
catch
{
serializedRequest.Dispose();
throw;
}
}
Log.Trace("Connection {0} receiving connection response.", transportConnection.Id);
using (var serializedResponse = await channel.In.ReadAsync().ConfigureAwait(false))
using (var connectResponse = protocolSerializer.DeserializeConnectResponse(serializedResponse.Payload))
{
await channel.Completion.ConfigureAwait(false);
Log.Debug("Successfully authenticated: {0}", connectResponse);
return(new ClientConnection(connectResponse.ConnectionId, transportConnection));
}
}
catch (Exception ex)
{
if (transportConnection != null)
{
Log.Error("Connection failed {0}", transportConnection);
}
else
{
Log.Warn(ex, "Connection failed");
}
throw;
}
}
public async Task Expected_server_disconnect()
{
// arrange
_fayeServerProcess.StartThinServer();
var socket = new WebSocketClient(uri: TEST_SERVER_URL);
SetupWebSocket(socket);
InstantiateTransportClient();
_connection = await _client.Connect();
var handshakeTcs = new TaskCompletionSource <string>();
MessageReceived handshakeHandler = (sender,
args) => handshakeTcs.SetResult(args.Message);
_connection.MessageReceived += handshakeHandler;
_connection.Send(TestMessageStr);
var response = await handshakeTcs.Task.WithTimeout(s => s,
5.Seconds());
dynamic responseObj = JsonConvert.DeserializeObject <JArray>(response)[0];
string clientId = responseObj.clientId;
var triggerServerDisconnectMessage =
new { channel = "/meta/disconnect", clientId };
var disconnectJson = JsonConvert.SerializeObject(triggerServerDisconnectMessage);
var disconnectTcs = new TaskCompletionSource <string>();
MessageReceived disconnectHandler = (sender,
args) => disconnectTcs.SetResult(args.Message);
_connection.MessageReceived -= handshakeHandler;
_connection.MessageReceived += disconnectHandler;
var closedTcs = new TaskCompletionSource <bool>();
_connection.ConnectionClosed += (sender,
args) => closedTcs.SetResult(true);
// act
_connection.NotifyOfPendingServerDisconnection();
_connection.Send(disconnectJson);
await disconnectTcs.Task.WithTimeout(s => s,
10.Seconds());
await closedTcs.Task.WithTimeout(s => s,
10.Seconds());
// assert
_connection
.ConnectionState
.Should()
.Be(ConnectionState.Disconnected);
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return base.InitializeResponse(connection)
.Then(() =>
{
Context.Response.ContentType = "text/event-stream";
// "data: initialized\n\n"
OutputWriter.WriteLine("data: initialized");
OutputWriter.WriteLine();
OutputWriter.WriteLine();
OutputWriter.Flush();
});
}
public Connection(ITransportConnection transportConnection, IProtocol protocol)
{
this.SessionID = Guid.NewGuid();
this.TransportConnection = transportConnection;
this.Protocol = protocol;
this.TransportConnection.Message += new EventHandler <TransportMessageEventArgs>(HandleMessage);
this.TransportConnection.Closed += new EventHandler((o, e) =>
{
if (this.Closed != null)
{
this.Closed(this, new EventArgs());
}
});
}
private Task ProcessMessages(ITransportConnection connection, Func <Task> postReceive = null)
{
var tcs = new TaskCompletionSource <object>();
Action endRequest = () =>
{
tcs.TrySetResult(null);
CompleteRequest();
};
ProcessMessages(connection, postReceive, endRequest);
return(tcs.Task);
}
protected Task ProcessRequestCore(ITransportConnection connection)
{
Connection = connection;
if (Context.Request.Url.LocalPath.EndsWith("/send", StringComparison.OrdinalIgnoreCase))
{
return(ProcessSendRequest());
}
else if (IsAbortRequest)
{
return(Connection.Abort(ConnectionId));
}
else
{
InitializePersistentState();
if (IsConnectRequest)
{
if (Connected != null)
{
// Return a task that completes when the connected event task & the receive loop task are both finished
bool newConnection = Heartbeat.AddConnection(this);
// The connected callback
Func <Task> connected = () =>
{
if (newConnection)
{
return(Connected().Then(() => _counters.ConnectionsConnected.Increment()));
}
return(TaskAsyncHelper.Empty);
};
return(TaskAsyncHelper.Interleave(ProcessReceiveRequestWithoutTracking, connected, connection, Completed));
}
return(ProcessReceiveRequest(connection));
}
if (Reconnected != null)
{
// Return a task that completes when the reconnected event task & the receive loop task are both finished
Func <Task> reconnected = () => Reconnected().Then(() => _counters.ConnectionsReconnected.Increment());
return(TaskAsyncHelper.Interleave(ProcessReceiveRequest, reconnected, connection, Completed));
}
return(ProcessReceiveRequest(connection));
}
}
private void TransportLayer_OnMessageReceived(ITransportConnection connection, P2PMessage msg)
{
MessageType type = (MessageType)msg.ReadByte();
switch (type)
{
case MessageType.GunFireHit:
{
byte playerId = smallPlayerIds[connection.ConnectedTo];
if (playerObjects.ContainsKey(playerId))
{
PlayerRep pr = playerObjects[playerId];
if (pr.rigTransforms.main != null)
{
GameObject instance = Instantiate(GunResources.HurtSFX, pr.rigTransforms.main);
Destroy(instance, 3);
}
}
GunFireHit gff = new GunFireHit()
{
playerId = playerId
};
ServerSendToAllExcept(gff, MessageSendType.Unreliable, connection.ConnectedTo);
break;
}
case MessageType.GunFire:
{
bool didHit;
GunFireMessage gfm = new GunFireMessage(msg);
Ray ray = new Ray(gfm.fireOrigin, gfm.fireDirection);
if (Physics.Raycast(ray, out RaycastHit hit, int.MaxValue, ~0, QueryTriggerInteraction.Ignore))
{
if (hit.transform.root.gameObject == BWUtil.RigManager)
{
MelonModLogger.Log("Hit BRETT!");
int random = UnityEngine.Random.Range(0, 10);
BWUtil.LocalPlayerHealth.TAKEDAMAGE(gfm.bulletDamage, random == 0);
GunFireHit gff = new GunFireHit();
ServerSendToAll(gff, MessageSendType.Reliable);
}
else
{
MelonModLogger.Log("Hit!");
}
didHit = true;
}
public override Task ProcessRequest(ITransportConnection connection)
{
if (IsAbortRequest)
{
Context.Response.ContentType = "text/plain";
return(connection.Abort(ConnectionId));
}
else
{
return(AcceptWebSocketRequest(socket =>
{
return ProcessRequestCore(connection);
}));
}
}
public ITransportConnection OpenConnection(string host, int port, Context context, Action <Connection> onConnected)
{
if (port == -1 || host == null)
{
throw new Error(ErrorCode.CONNECTION_ERROR, "No port and/or IP address is present in configuration.");
}
ITransportConnection transportConnection = webSocketFactory.Construct("ws://" + host + ":" + port + "/");
transportConnection.Error += (sender, e) => {
logger.Warn("Error in connection to " + host + ":" + port, e.Exception);
};
transportConnection.Open();
return(transportConnection);
}
private void TransportLayer_OnConnectionClosed(ITransportConnection connection, ConnectionClosedReason reason)
{
if (connection.ConnectedTo != ServerId)
{
MelonModLogger.LogError("Connection with non-server ID was closed - but we're a client???");
return;
}
ui.SetState(MultiplayerUIState.PreConnect);
MelonModLogger.LogError("Got P2P connection error " + reason.ToString());
foreach (PlayerRep pr in playerObjects.Values)
{
pr.Destroy();
}
}
private Task ProcessReceiveRequest(ITransportConnection connection)
{
Func <Task> initialize = null;
// If this transport isn't replacing an existing transport, oldConnection will be null.
ITrackingConnection oldConnection = Heartbeat.AddOrUpdateConnection(this);
bool newConnection = oldConnection == null;
if (IsConnectRequest)
{
if (_protocolResolver.SupportsDelayedStart(Context.Request))
{
// TODO: Ensure delegate continues to use the C# Compiler static delegate caching optimization.
initialize = () => connection.Initialize(ConnectionId);
}
else
{
Func <Task> connected;
if (newConnection)
{
connected = Connected ?? _emptyTaskFunc;
_counters.ConnectionsConnected.Increment();
}
else
{
// Wait until the previous call to Connected completes.
// We don't want to call Connected twice
connected = () => oldConnection.ConnectTask;
}
initialize = () =>
{
return(connected().Then((conn, id) => conn.Initialize(id), connection, ConnectionId));
};
}
}
else if (!SuppressReconnect)
{
initialize = Reconnected;
_counters.ConnectionsReconnected.Increment();
}
initialize = initialize ?? _emptyTaskFunc;
Func <Task> fullInit = () => initialize().ContinueWith(_connectTcs);
return(ProcessMessages(connection, fullInit));
}
private Task ProcessMessages(ITransportConnection connection, Func <Task> initialize)
{
var disposer = new Disposer();
if (BeforeCancellationTokenCallbackRegistered != null)
{
BeforeCancellationTokenCallbackRegistered();
}
var cancelContext = new ForeverTransportContext(this, disposer);
// Ensure delegate continues to use the C# Compiler static delegate caching optimization.
_busRegistration = ConnectionEndToken.SafeRegister(state => Cancel(state), cancelContext);
if (BeforeReceive != null)
{
BeforeReceive();
}
try
{
// Ensure we enqueue the response initialization before any messages are received
EnqueueOperation(state => InitializeResponse((ITransportConnection)state), connection)
.Catch((ex, state) => ((ForeverTransport)state).OnError(ex), this, Logger);
// Ensure delegate continues to use the C# Compiler static delegate caching optimization.
IDisposable subscription = connection.Receive(LastMessageId,
(response, state) => ((ForeverTransport)state).OnMessageReceived(response),
MaxMessages,
this);
if (AfterReceive != null)
{
AfterReceive();
}
// Ensure delegate continues to use the C# Compiler static delegate caching optimization.
initialize().Catch((ex, state) => ((ForeverTransport)state).OnError(ex), this, Logger)
.Finally(state => ((SubscriptionDisposerContext)state).Set(),
new SubscriptionDisposerContext(disposer, subscription));
}
catch (Exception ex)
{
_transportLifetime.Complete(ex);
}
return(_requestLifeTime.Task);
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return(base.InitializeResponse(connection)
.Then(() =>
{
Context.Response.ContentType = "text/event-stream";
// "data: initialized\n\n"
OutputWriter.Write("data: initialized");
OutputWriter.WriteLine();
OutputWriter.WriteLine();
OutputWriter.Flush();
return Context.Response.FlushAsync();
}));
}
protected override Task InitializeResponse(ITransportConnection connection)
{
return base.InitializeResponse(connection)
.Then(initScript =>
{
Context.Response.ContentType = "text/html";
return EnqueueOperation(() =>
{
OutputWriter.Write(initScript);
OutputWriter.Flush();
return Context.Response.FlushAsync();
});
},
_initPrefix + Context.Request.QueryString["frameId"] + _initSuffix);
}
protected async Task ProcessRequestCore(ITransportConnection connection)
{
Connection = connection;
if (IsSendRequest)
{
await ProcessSendRequest().PreserveCulture();
}
else if (IsAbortRequest)
{
await Connection.Abort(ConnectionId).PreserveCulture();
}
else
{
await InitializePersistentState().PreserveCulture();
await ProcessReceiveRequest(connection).PreserveCulture();
}
}
protected internal override Task InitializeResponse(ITransportConnection connection)
{
uint frameId;
string rawFrameId = Context.Request.QueryString["frameId"];
if (String.IsNullOrWhiteSpace(rawFrameId) || !UInt32.TryParse(rawFrameId, NumberStyles.None, CultureInfo.InvariantCulture, out frameId))
{
// Invalid frameId passed in
throw new InvalidOperationException(Resources.Error_InvalidForeverFrameId);
}
string initScript = _initPrefix +
frameId.ToString(CultureInfo.InvariantCulture) +
_initSuffix;
var context = new ForeverFrameTransportContext(this, initScript);
// Ensure delegate continues to use the C# Compiler static delegate caching optimization.
return base.InitializeResponse(connection).Then(s => Initialize(s), context);
}
public override Task ProcessRequest(ITransportConnection connection)
{
if (IsAbortRequest)
{
return connection.Abort(ConnectionId);
}
else
{
return AcceptWebSocketRequest(socket =>
{
_socket = socket;
socket.OnClose = _closed;
socket.OnMessage = _message;
socket.OnError = _error;
return ProcessRequestCore(connection);
});
}
}
public override Task ProcessRequest(ITransportConnection connection)
{
var webSocketRequest = _context.Request as IWebSocketRequest;
// Throw if the server implementation doesn't support websockets
if (webSocketRequest == null)
{
throw new InvalidOperationException(Resources.Error_WebSocketsNotSupported);
}
return webSocketRequest.AcceptWebSocketRequest(socket =>
{
_socket = socket;
socket.OnClose = clean =>
{
Trace.TraceInformation("CloseSocket({0}, {1})", clean, ConnectionId);
// If we performed a clean disconnect then we go through the normal disconnect routine. However,
// If we performed an unclean disconnect we want to mark the connection as "not alive" and let the
// HeartBeat clean it up. This is to maintain consistency across the transports.
if (clean)
{
OnDisconnect();
}
_isAlive = false;
};
socket.OnMessage = message =>
{
if (Received != null)
{
Received(message).Catch();
}
};
return ProcessRequestCore(connection);
});
}
private Task ProcessReceiveRequestWithoutTracking(ITransportConnection connection, Func<Task> postReceive = null)
{
if (TransportConnected != null)
{
TransportConnected().Catch();
}
// Receive() will async wait until a message arrives then return
var receiveTask = IsConnectRequest ?
connection.Receive(null, ConnectionEndToken, MaxMessages) :
connection.Receive(MessageId, ConnectionEndToken, MaxMessages);
return TaskAsyncHelper.Series(() =>
{
if (postReceive != null)
{
return postReceive();
}
return TaskAsyncHelper.Empty;
},
() =>
{
return receiveTask.Then(response =>
{
response.TimedOut = IsTimedOut;
if (response.Aborted)
{
// If this was a clean disconnect then raise the event
OnDisconnect();
}
return Send(response);
});
});
}
private Task ProcessReceiveRequest(ITransportConnection connection, Func<Task> postReceive = null)
{
Heartbeat.AddConnection(this);
return ProcessReceiveRequestWithoutTracking(connection, postReceive);
}
private Task ProcessConnectRequest(ITransportConnection connection)
{
if (Connected != null)
{
bool newConnection = Heartbeat.AddConnection(this);
// Return a task that completes when the connected event task & the receive loop task are both finished
return TaskAsyncHelper.Interleave(ProcessReceiveRequestWithoutTracking, () =>
{
if (newConnection)
{
return Connected().Then(() => _counters.ConnectionsConnected.Increment());
}
return TaskAsyncHelper.Empty;
},
connection, Completed);
}
return ProcessReceiveRequest(connection);
}
public Task ProcessRequest(ITransportConnection connection)
{
Connection = connection;
if (IsSendRequest)
{
return ProcessSendRequest();
}
else if (IsAbortRequest)
{
return Connection.Abort(ConnectionId);
}
else
{
InitializePersistentState();
Task task = null;
if (IsConnectRequest)
{
task = ProcessConnectRequest(connection);
}
else if (MessageId != null)
{
if (IsReconnectRequest && Reconnected != null)
{
// Return a task that completes when the reconnected event task & the receive loop task are both finished
Func<Task> reconnected = () => Reconnected().Then(() => _counters.ConnectionsReconnected.Increment());
task = TaskAsyncHelper.Interleave(ProcessReceiveRequest, reconnected, connection, Completed);
}
else
{
task = ProcessReceiveRequest(connection);
}
}
if (task != null)
{
// Mark the request as completed once it's done
return task.Finally(() => CompleteRequest());
}
}
return null;
}
private Task ProcessReceiveRequestWithoutTracking(ITransportConnection connection, Action postReceive = null)
{
if (TransportConnected != null)
{
TransportConnected().Catch();
}
// ReceiveAsync() will async wait until a message arrives then return
var receiveTask = IsConnectRequest ?
connection.ReceiveAsync(null, ConnectionEndToken, MessageBufferSize) :
connection.ReceiveAsync(MessageId, ConnectionEndToken, MessageBufferSize);
if (postReceive != null)
{
postReceive();
}
return receiveTask.Then(response =>
{
response.TimedOut = IsTimedOut;
if (response.Aborted)
{
// If this was a clean disconnect then raise the event
OnDisconnect();
}
return Send(response);
});
}
private void ProcessMessages(ITransportConnection connection, Func<Task> postReceive, Action<Exception> endRequest)
{
IDisposable subscription = null;
var wh = new ManualResetEventSlim(initialState: false);
var registration = default(CancellationTokenRegistration);
bool disposeSubscriptionImmediately = false;
try
{
// End the request if the connection end token is triggered
registration = ConnectionEndToken.Register(() =>
{
wh.Wait();
// This is only null if we failed to create the subscription
if (subscription != null)
{
subscription.Dispose();
}
});
}
catch (ObjectDisposedException)
{
// If we've ended the connection before we got a chance to register the connection
// then dispose the subscription immediately
disposeSubscriptionImmediately = true;
}
try
{
subscription = connection.Receive(LastMessageId, response =>
{
// We need to wait until post receive has been called
wh.Wait();
response.TimedOut = IsTimedOut;
// If we're telling the client to disconnect then clean up the instantiated connection.
if (response.Disconnect)
{
// Send the response before removing any connection data
return Send(response).Then(() =>
{
// Remove connection without triggering disconnect
HeartBeat.RemoveConnection(this);
endRequest(null);
// Dispose everything
registration.Dispose();
subscription.Dispose();
return TaskAsyncHelper.False;
});
}
else if (response.TimedOut ||
response.Aborted ||
ConnectionEndToken.IsCancellationRequested)
{
if (response.Aborted)
{
// If this was a clean disconnect raise the event.
OnDisconnect();
}
endRequest(null);
// Dispose everything
registration.Dispose();
subscription.Dispose();
return TaskAsyncHelper.False;
}
else
{
return Send(response).Then(() => TaskAsyncHelper.True);
}
},
MaxMessages);
}
catch (Exception ex)
{
endRequest(ex);
wh.Set();
registration.Dispose();
return;
}
if (postReceive != null)
{
postReceive().Catch(_counters.ErrorsAllTotal, _counters.ErrorsAllPerSec)
.Catch(ex => endRequest(ex))
.ContinueWith(task => wh.Set());
}
else
{
wh.Set();
}
if (disposeSubscriptionImmediately)
{
subscription.Dispose();
}
}
private Task ProcessMessages(ITransportConnection connection, Func<Task> postReceive = null)
{
var tcs = new TaskCompletionSource<object>();
Action<Exception> endRequest = (ex) =>
{
if (ex != null)
{
tcs.TrySetException(ex);
}
else
{
tcs.TrySetResult(null);
}
CompleteRequest();
};
ProcessMessages(connection, postReceive, endRequest);
return tcs.Task;
}
protected Task ProcessRequestCore(ITransportConnection connection)
{
Connection = connection;
if (Context.Request.Url.LocalPath.EndsWith("/send"))
{
return ProcessSendRequest();
}
else if (IsAbortRequest)
{
return Connection.Abort(ConnectionId);
}
else
{
InitializePersistentState();
if (IsConnectRequest)
{
if (Connected != null)
{
// Return a task that completes when the connected event task & the receive loop task are both finished
bool newConnection = HeartBeat.AddConnection(this);
return TaskAsyncHelper.Interleave(ProcessReceiveRequestWithoutTracking, () =>
{
if (newConnection)
{
return Connected().Then(() => _counters.ConnectionsConnected.Increment());
}
return TaskAsyncHelper.Empty;
}
, connection, Completed);
}
return ProcessReceiveRequest(connection);
}
if (Reconnected != null)
{
// Return a task that completes when the reconnected event task & the receive loop task are both finished
Func<Task> reconnected = () => Reconnected().Then(() => _counters.ConnectionsReconnected.Increment());
return TaskAsyncHelper.Interleave(ProcessReceiveRequest, reconnected, connection, Completed);
}
return ProcessReceiveRequest(connection);
}
}
protected virtual Task InitializeResponse(ITransportConnection connection)
{
return TaskAsyncHelper.Empty;
}
public virtual Task ProcessRequest(ITransportConnection connection)
{
return ProcessRequestCore(connection);
}
private Task ProcessMessages(ITransportConnection connection, Action postReceive = null)
{
var tcs = new TaskCompletionSource<object>();
Action endRequest = () =>
{
tcs.TrySetResult(null);
CompleteRequest();
};
ProcessMessages(connection, postReceive, endRequest);
return tcs.Task;
}
private void ProcessMessages(ITransportConnection connection, Action postReceive, Action endRequest)
{
IDisposable subscription = null;
// End the request if the connection end token is triggered
ConnectionEndToken.Register(() =>
{
if (subscription != null)
{
subscription.Dispose();
}
});
subscription = connection.Receive(LastMessageId, response =>
{
response.TimedOut = IsTimedOut;
if (response.Disconnect ||
response.TimedOut ||
response.Aborted ||
ConnectionEndToken.IsCancellationRequested)
{
if (response.Aborted)
{
// If this was a clean disconnect raise the event.
OnDisconnect();
}
endRequest();
return TaskAsyncHelper.False;
}
else
{
return Send(response).Then(() => TaskAsyncHelper.True);
}
},
MessageBufferSize);
if (postReceive != null)
{
postReceive();
}
}
private static void ReceiveLoop(ITransportConnection connection, string messageId)
{
connection.ReceiveAsync(messageId, CancellationToken.None, maxMessages: 5000).Then(r =>
{
Interlocked.Add(ref _received, r.TotalCount);
Interlocked.Add(ref _avgLastReceivedCount, r.TotalCount);
ReceiveLoop(connection, r.MessageId);
});
}
protected internal override Task InitializeResponse(ITransportConnection connection)
{
// Ensure delegate continues to use the C# Compiler static delegate caching optimization.
return base.InitializeResponse(connection)
.Then(s => WriteInit(s), this);
}
private Task ProcessReceiveRequestWithoutTracking(ITransportConnection connection, Action postReceive = null)
{
Func<Task> afterReceive = () =>
{
if (TransportConnected != null)
{
TransportConnected().Catch(_counters.ErrorsAllTotal, _counters.ErrorsAllPerSec);
}
if (postReceive != null)
{
try
{
postReceive();
}
catch (Exception ex)
{
return TaskAsyncHelper.FromError(ex);
}
}
return InitializeResponse(connection);
};
return ProcessMessages(connection, afterReceive);
}
public Task ProcessRequest(ITransportConnection connection)
{
Connection = connection;
if (IsSendRequest)
{
return ProcessSendRequest();
}
else if (IsAbortRequest)
{
return Connection.Abort(ConnectionId);
}
else
{
if (IsConnectRequest)
{
return ProcessConnectRequest(connection);
}
else if (MessageId != null)
{
if (IsReconnectRequest && Reconnected != null)
{
// Return a task that completes when the reconnected event task & the receive loop task are both finished
return TaskAsyncHelper.Interleave(ProcessReceiveRequest, Reconnected, connection, Completed);
}
return ProcessReceiveRequest(connection);
}
}
return null;
}
private Task ProcessReceiveRequestWithoutTracking(ITransportConnection connection, Action postReceive = null)
{
Action afterReceive = () =>
{
if (TransportConnected != null)
{
TransportConnected().Catch();
}
if (postReceive != null)
{
postReceive();
}
InitializeResponse(connection).Catch();
};
return ProcessMessages(connection, afterReceive);
}
