/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (Interlocked.Exchange(ref isDisposed, 1) == 0)
{
try {
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.DisposeTransport,
"Dispose transport. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, default(MessageContext)),
GetLocalEndPoint(socket)
);
if (Interlocked.CompareExchange(ref shutdownSource, (int)ShutdownSource.Disposing, 0) == 0)
{
var closingSocket = Interlocked.Exchange(ref boundSocket, null);
if (closingSocket != null)
{
closingSocket.Close();
}
}
}
catch (ObjectDisposedException) {
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.DisposeTransport,
"Dispose transport. {{ \"Socket\" : \"Disposed\", \"RemoteEndPoint\" : \"Disposed\", \"LocalEndPoint\" : \"Disposed\" }}"
);
}
}
}
}
/// <summary>
/// Receives byte stream from remote end point.
/// </summary>
/// <param name="context">Context information.</param>
/// <exception cref="InvalidOperationException">
/// This instance is not in 'Idle' state.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// This instance is disposed.
/// </exception>
void Receive(ClientResponseContext context)
{
Contract.Assert(context != null);
Contract.Assert(context.BoundTransport == this, "Context is not bound to this object.");
// First, drain last received request.
if (context.ReceivedData.Any(segment => 0 < segment.Count))
{
DrainRemainingReceivedData(context);
}
else
{
// There might be dirty data due to client shutdown.
context.ReceivedData.Clear();
Array.Clear(context.CurrentReceivingBuffer, 0, context.CurrentReceivingBuffer.Length);
context.PrepareReceivingBuffer();
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.BeginReceive,
"Receive inbound data. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket)
);
ReceiveCore(context);
}
}
void OnConnected(Socket connectSocket, SocketAsyncEventArgs context, TaskCompletionSource <ClientTransport> taskCompletionSource)
{
try {
if (connectSocket == null || !connectSocket.Connected)
{
// canceled.
taskCompletionSource.SetException(
new RpcTransportException(
RpcError.ConnectionTimeoutError,
"Connect timeout.",
string.Format(CultureInfo.CurrentCulture, "Timeout: {0}", Configuration.ConnectTimeout)
)
);
return;
}
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.EndConnect,
"Connected. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
ClientTransport.GetHandle(connectSocket),
ClientTransport.GetRemoteEndPoint(connectSocket, context),
ClientTransport.GetLocalEndPoint(connectSocket)
);
taskCompletionSource.SetResult(GetTransport(connectSocket));
}
finally {
context.Dispose();
}
}
/// <summary>
/// Unpack Message Type part on response message.
/// </summary>
/// <param name="context">Context information.</param>
/// <returns>
/// <c>true</c>, if the pipeline is finished;
/// <c>false</c>, the pipeline is interruppted because extra data is needed.
/// </returns>
bool UnpackMessageType(ClientResponseContext context)
{
if (!context.ReadFromHeaderUnpacker())
{
MsgPackRpcClientProtocolsTrace.TraceEvent(MsgPackRpcClientProtocolsTrace.NeedMessageType, "Message Type is needed. {{ \"SessionID\" : {0} }}", context.SessionId);
return(false);
}
int numericType;
try {
numericType = context.HeaderUnpacker.LastReadData.AsInt32();
}
catch (InvalidOperationException) {
HandleDeserializationError(context, "Invalid response message stream. Message Type must be Int32 compatible integer.", () => context.UnpackingBuffer.ToArray());
return(context.nextProcess(context));
}
var type = (MessageType)numericType;
if (type != MessageType.Response)
{
HandleDeserializationError(
context,
string.Format(CultureInfo.CurrentCulture, "Unknown message type '{0:x8}'", numericType),
() => context.UnpackingBuffer.ToArray()
);
return(context.nextProcess(context));
}
context.nextProcess = UnpackMessageId;
return(context.nextProcess(context));
}
/// <summary>
/// When overridden in the derived class, shutdowns the sending.
/// </summary>
protected virtual void ShutdownSending()
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.ShutdownSending,
"Shutdown sending. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, default(MessageContext)),
GetLocalEndPoint(socket)
);
}
/// <summary>
/// When overridden in the derived class, shutdowns the receiving.
/// </summary>
protected virtual void ShutdownReceiving()
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.ShutdownReceiving,
"Shutdown receiving. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, default(MessageContext)),
GetLocalEndPoint(socket)
);
OnShutdownCompleted(new ShutdownCompletedEventArgs((ShutdownSource)shutdownSource));
}
void OnSocketOperationCompleted(object sender, SocketAsyncEventArgs e)
{
var socket = sender as Socket;
var context = e.GetContext();
if (!HandleSocketError(socket, context))
{
return;
}
switch (context.LastOperation)
{
case SocketAsyncOperation.Send:
case SocketAsyncOperation.SendTo:
case SocketAsyncOperation.SendPackets:
{
var requestContext = context as ClientRequestContext;
Contract.Assert(requestContext != null);
OnSent(requestContext);
break;
}
case SocketAsyncOperation.Receive:
case SocketAsyncOperation.ReceiveFrom:
case SocketAsyncOperation.ReceiveMessageFrom:
{
var responseContext = context as ClientResponseContext;
Contract.Assert(responseContext != null);
OnReceived(responseContext);
break;
}
default: {
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.UnexpectedLastOperation,
"Unexpected operation. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\", \"LastOperation\" : \"{3}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, e),
GetLocalEndPoint(socket),
context.LastOperation
);
break;
}
}
}
/// <summary>
/// Establishes logical connection, which specified to the managed transport protocol, for the server.
/// </summary>
/// <param name="targetEndPoint">The end point of target server.</param>
/// <returns>
/// <see cref="Task{T}"/> of <see cref="ClientTransport"/> which represents asynchronous establishment process specific to the managed transport.
/// This value will not be <c>null</c>.
/// </returns>
protected sealed override Task <ClientTransport> ConnectAsyncCore(EndPoint targetEndPoint)
{
var source = new TaskCompletionSource <ClientTransport>();
var context = new SocketAsyncEventArgs {
RemoteEndPoint = targetEndPoint
};
context.Completed += OnCompleted;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.BeginConnect,
"Connecting. {{ \"EndPoint\" : \"{0}\", \"AddressFamily\" : {1}, \"PreferIPv4\" : {2}, \"OSSupportsIPv6\" : {3} }}",
targetEndPoint,
targetEndPoint.AddressFamily,
Configuration.PreferIPv4,
Socket.OSSupportsIPv6
);
context.UserToken =
Tuple.Create(
source,
BeginConnectTimeoutWatch(
() => {
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.ConnectTimeout,
"Connect timeout. {{ \"EndPoint\" : \"{0}\", \"AddressFamily\" : {1}, \"PreferIPv4\" : {2}, \"OSSupportsIPv6\" : {3}, \"ConnectTimeout\" : {4} }}",
targetEndPoint,
targetEndPoint.AddressFamily,
Configuration.PreferIPv4,
Socket.OSSupportsIPv6,
Configuration.ConnectTimeout
);
Socket.CancelConnectAsync(context);
}
)
);
if (!Socket.ConnectAsync(SocketType.Stream, ProtocolType.Tcp, context))
{
OnCompleted(null, context);
}
return(source.Task);
}
void HandleOrphan(int?messageId, long sessionId, EndPoint remoteEndPoint, RpcErrorMessage rpcError, MessagePackObject?returnValue)
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.OrphanError,
"There are no handlers to handle message which has MessageID:{0}, SessionID:{1}. This may indicate runtime problem or due to client recycling. {{ \"Socket\" : 0x{2:X}, \"RemoteEndPoint\" : \"{3}\", \"LocalEndPoint\" : \"{4}\", \"SessionID\" :{1}, \"MessageID\" : {0}, \"Error\" : {5}, \"ReturnValue\" : {6}, \"CallStack\" : \"{7}\" }}",
messageId == null ? "(null)" : messageId.Value.ToString(CultureInfo.InvariantCulture),
sessionId,
GetHandle(socket),
remoteEndPoint,
GetLocalEndPoint(socket),
rpcError,
returnValue,
new StackTrace(0, true)
);
manager.HandleOrphan(messageId, rpcError, returnValue);
}
/// <summary>
/// Raises internal shutdown completion routine.
/// </summary>
/// <param name="e">The <see cref="ShutdownCompletedEventArgs"/> instance containing the event data.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="e"/> is <c>null</c>.
/// </exception>
protected virtual void OnShutdownCompleted(ShutdownCompletedEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException(nameof(e));
}
Contract.EndContractBlock();
var socket = Interlocked.Exchange(ref boundSocket, null);
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.TransportShutdownCompleted,
"Transport shutdown is completed. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, default(MessageContext)),
GetLocalEndPoint(socket)
);
if (socket != null)
{
socket.Close();
}
// Notify shutdown to waiting clients.
// Note that it is OK from concurrency point of view because additional modifications are guarded via shutdown flag.
var errorMessage = new RpcErrorMessage(RpcError.TransportError, string.Format(CultureInfo.CurrentCulture, "Transport is shutdown. Shutdown source is: {0}", e.Source), null);
foreach (var entry in pendingRequestTable)
{
entry.Value(null, errorMessage.ToException(), false);
}
foreach (var entry in pendingNotificationTable)
{
entry.Value(errorMessage.ToException(), false);
}
pendingRequestTable.Clear();
pendingNotificationTable.Clear();
Interlocked.CompareExchange(ref shutdownCompleted, null, null)?.Invoke(this, e);
}
void HandleDeserializationError(ClientResponseContext context, int?messageId, RpcErrorMessage rpcError, string message, Func <byte[]> invalidRequestHeaderProvider)
{
MsgPackRpcClientProtocolsTrace.TraceRpcError(
rpcError.Error,
"Deserialization error. {0} {{ \"Message ID\" : {1}, \"Error\" : {2} }}",
message,
messageId == null ? "(null)" : messageId.ToString(),
rpcError
);
if (invalidRequestHeaderProvider != null && MsgPackRpcClientProtocolsTrace.ShouldTrace(MsgPackRpcClientProtocolsTrace.DumpInvalidResponseHeader))
{
var array = invalidRequestHeaderProvider();
MsgPackRpcClientProtocolsTrace.TraceData(MsgPackRpcClientProtocolsTrace.DumpInvalidResponseHeader, BitConverter.ToString(array), array);
}
RaiseError(messageId, context.SessionId, GetRemoteEndPoint(BoundSocket, context), rpcError, context.CompletedSynchronously);
context.nextProcess = DumpCorrupttedData;
}
/// <summary>
/// Handles socket error.
/// </summary>
/// <param name="socket">The <see cref="Socket"/> which might cause socket error.</param>
/// <param name="context">The <see cref="SocketAsyncEventArgs"/> which holds actual error information.</param>
/// <returns>
/// <see cref="RpcErrorMessage"/> corresponds for the socket error.
/// <c>null</c> if the operation result is not socket error.
/// </returns>
protected internal RpcErrorMessage?HandleSocketError(Socket socket, SocketAsyncEventArgs context)
{
if (context.SocketError.IsError() == false)
{
return(null);
}
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.SocketError,
"Socket error. {{ \"Socket\" : 0x{0:X}, \"RemoteEndpoint\" : \"{1}\", \"LocalEndpoint\" : \"{2}\", \"LastOperation\" : \"{3}\", \"SocketError\" : \"{4}\", \"ErrorCode\" : 0x{5:X} }}",
ClientTransport.GetHandle(socket),
ClientTransport.GetRemoteEndPoint(socket, context),
ClientTransport.GetLocalEndPoint(socket),
context.LastOperation,
context.SocketError,
(int)context.SocketError
);
return(context.SocketError.ToClientRpcError());
}
void OnCompleted(object sender, SocketAsyncEventArgs e)
{
var socket = sender as Socket;
var userToken = e.UserToken as Tuple <TaskCompletionSource <ClientTransport>, ConnectTimeoutWatcher>;
var taskCompletionSource = userToken.Item1;
var watcher = userToken.Item2;
if (watcher != null)
{
EndConnectTimeoutWatch(watcher);
}
var error = HandleSocketError(e.ConnectSocket ?? socket, e);
if (error != null)
{
taskCompletionSource.SetException(error.Value.ToException());
return;
}
switch (e.LastOperation)
{
case SocketAsyncOperation.Connect: {
OnConnected(e.ConnectSocket, e, taskCompletionSource);
break;
}
default: {
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.UnexpectedLastOperation,
"Unexpected operation. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\", \"LastOperation\" : \"{3}\" }}",
ClientTransport.GetHandle(socket),
ClientTransport.GetRemoteEndPoint(socket, e),
ClientTransport.GetLocalEndPoint(socket),
e.LastOperation
);
taskCompletionSource.SetException(new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, "Unknown socket operation : {0}", e.LastOperation)));
break;
}
}
}
/// <summary>
/// Unpack response message array header.
/// </summary>
/// <param name="context">Context information.</param>
/// <returns>
/// <c>true</c>, if the pipeline is finished;
/// <c>false</c>, the pipeline is interruppted because extra data is needed.
/// </returns>
internal bool UnpackResponseHeader(ClientResponseContext context)
{
Contract.Assert(context != null);
if (context.RootUnpacker == null)
{
context.UnpackingBuffer = new ByteArraySegmentStream(context.ReceivedData);
context.RootUnpacker = Unpacker.Create(context.UnpackingBuffer, false);
context.RenewSessionId();
}
if (!context.ReadFromRootUnpacker())
{
MsgPackRpcClientProtocolsTrace.TraceEvent(MsgPackRpcClientProtocolsTrace.NeedRequestHeader, "Array header is needed. {{ \"SessionID\" : {0} }}", context.SessionId);
return(false);
}
if (!context.RootUnpacker.IsArrayHeader)
{
HandleDeserializationError(context, "Invalid response message stream. Message must be array.", () => context.UnpackingBuffer.ToArray());
return(context.nextProcess(context));
}
if (context.RootUnpacker.ItemsCount != 4)
{
HandleDeserializationError(
context,
string.Format(
CultureInfo.CurrentCulture,
"Invalid response message stream. Message must be valid size array. Actual size is {0}.",
context.RootUnpacker.ItemsCount
),
() => context.UnpackingBuffer.ToArray()
);
return(context.nextProcess(context));
}
context.HeaderUnpacker = context.RootUnpacker.ReadSubtree();
context.nextProcess = UnpackMessageType;
return(context.nextProcess(context));
}
/// <summary>
/// Unpack result part on response message.
/// </summary>
/// <param name="context">Context information.</param>
/// <returns>
/// <c>true</c>, if the pipeline is finished;
/// <c>false</c>, the pipeline is interruppted because extra data is needed.
/// </returns>
bool UnpackResult(ClientResponseContext context)
{
Contract.Assert(context.UnpackingBuffer.CanSeek);
if (context.resultStartAt == -1)
{
context.resultStartAt = context.UnpackingBuffer.Position;
}
var skipped = context.SkipResultSegment();
if (skipped == null)
{
MsgPackRpcClientProtocolsTrace.TraceEvent(MsgPackRpcClientProtocolsTrace.NeedResult, "Result value is needed. {{ \"SessionID\" : {0} }}", context.SessionId);
return(false);
}
context.resultBuffer = new ByteArraySegmentStream(context.UnpackingBuffer.GetBuffer(context.resultStartAt, context.UnpackingBuffer.Position - context.resultStartAt));
context.nextProcess = Dispatch;
return(context.nextProcess(context));
}
void OnWaitTimeout(MessageContext context)
{
Contract.Assert(context != null);
var asClientRequestContext = context as ClientRequestContext;
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.WaitTimeout,
"Wait timeout. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\", \"Operation\" : \"{3}\", \"MessageType\" : \"{4}\" \"MessageId\" : {5}, \"BytesTransferred\" : {6}, \"Timeout\" : \"{7}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket),
asClientRequestContext != null ? "Send" : "Receive",
asClientRequestContext == null ? MessageType.Response : asClientRequestContext.MessageType,
context.MessageId,
context.BytesTransferred,
manager.Configuration.WaitTimeout
);
var rpcError =
new RpcErrorMessage(
RpcError.TimeoutError,
new MessagePackObject(
new MessagePackObjectDictionary(3)
{
{ RpcException.messageKeyUtf8, asClientRequestContext != null ? "Wait timeout on sending." : "Wait timeout on receiving." },
{ RpcException.debugInformationKeyUtf8, string.Empty },
{ RpcTimeoutException.ClientTimeoutKeyUtf8, Manager.Configuration.WaitTimeout.Value.Ticks }
},
true
)
);
RaiseError(context.MessageId, context.SessionId, GetRemoteEndPoint(socket, context), rpcError, false);
ResetConnection();
}
/// <summary>
/// Unpack Message ID part on response message.
/// </summary>
/// <param name="context">Context information.</param>
/// <returns>
/// <c>true</c>, if the pipeline is finished;
/// <c>false</c>, the pipeline is interruppted because extra data is needed.
/// </returns>
bool UnpackMessageId(ClientResponseContext context)
{
if (!context.ReadFromHeaderUnpacker())
{
MsgPackRpcClientProtocolsTrace.TraceEvent(MsgPackRpcClientProtocolsTrace.NeedMessageId, "Message ID is needed. {{ \"SessionID\" : {0} }}", context.SessionId);
return(false);
}
try {
context.MessageId = unchecked ((int)context.HeaderUnpacker.LastReadData.AsUInt32());
}
catch (InvalidOperationException) {
HandleDeserializationError(
context,
"Invalid response message stream. ID must be UInt32 compatible integer.",
() => context.UnpackingBuffer.ToArray()
);
return(context.nextProcess(context));
}
context.nextProcess = UnpackError;
return(context.nextProcess(context));
}
/// <summary>
/// Called when asynchronous 'Receive' operation is completed.
/// </summary>
/// <param name="context">Context information.</param>
/// <exception cref="InvalidOperationException">
/// This instance is not in 'Idle' nor 'Receiving' state.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// This instance is disposed.
/// </exception>
protected virtual void OnReceived(ClientResponseContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
Contract.EndContractBlock();
if (MsgPackRpcClientProtocolsTrace.ShouldTrace(MsgPackRpcClientProtocolsTrace.ReceiveInboundData))
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.ReceiveInboundData,
"Receive response. {{ \"SessionID\" : {0}, \"Socket\" : 0x{1:X}, \"RemoteEndPoint\" : \"{2}\", \"LocalEndPoint\" : \"{3}\", \"BytesTransfered\" : {4} }}",
context.SessionId,
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket),
context.BytesTransferred
);
}
if (context.BytesTransferred == 0)
{
if (Interlocked.CompareExchange(ref shutdownSource, (int)ShutdownSource.Server, 0) == 0)
{
// Server sent shutdown response.
ShutdownReceiving();
// recv() returns 0 when the server socket shutdown gracefully.
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.DetectServerShutdown,
"Server shutdown current socket. {{ \"Socket\" : 0x{0:X}, \"RemoteEndPoint\" : \"{1}\", \"LocalEndPoint\" : \"{2}\" }}",
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket)
);
}
else if (IsClientShutdown)
{
// Client was started shutdown.
ShutdownReceiving();
}
if (!context.ReceivedData.Any(segment => 0 < segment.Count))
{
// There are no data to handle.
FinishReceiving(context);
return;
}
}
else
{
context.ShiftCurrentReceivingBuffer();
}
if (MsgPackRpcClientProtocolsTrace.ShouldTrace(MsgPackRpcClientProtocolsTrace.DeserializeResponse))
{
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.DeserializeResponse,
"Deserialize response. {{ \"SessionID\" : {0}, \"Length\" : {1} }}",
context.SessionId,
context.ReceivedData.Sum(item => (long)item.Count)
);
}
// Go deserialization pipeline.
// Exceptions here means message error.
try {
ApplyFilters(BeforeDeserializationFilters, context);
}
catch (RpcException ex) {
HandleDeserializationError(context, TryDetectMessageId(context), new RpcErrorMessage(ex.RpcError, ex.Message, ex.DebugInformation), "Filter rejects message.", () => context.ReceivedData.SelectMany(s => s.AsEnumerable()).ToArray());
FinishReceiving(context);
return;
}
if (!context.nextProcess(context))
{
if (IsServerShutdown)
{
ShutdownReceiving();
}
else if (CanResumeReceiving)
{
// Wait to arrive more data from server.
ReceiveCore(context);
return;
}
//this.FinishReceiving( context );
//return;
}
FinishReceiving(context);
}
/// <summary>
/// Called when asynchronous 'Send' operation is completed.
/// </summary>
/// <param name="context">Context information.</param>
/// <returns>
/// <c>true</c>, if the subsequent request is already received;
/// <c>false</c>, otherwise.
/// </returns>
/// <exception cref="InvalidOperationException">
/// This instance is not in 'Sending' state.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// This instance is disposed.
/// </exception>
protected virtual void OnSent(ClientRequestContext context)
{
if (MsgPackRpcClientProtocolsTrace.ShouldTrace(MsgPackRpcClientProtocolsTrace.SentOutboundData))
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.SentOutboundData,
"Sent request/notification. {{ \"SessionID\" : {0}, \"Socket\" : 0x{1:X}, \"RemoteEndPoint\" : \"{2}\", \"LocalEndPoint\" : \"{3}\", \"Type\" : \"{4}\", \"MessageID\" : {5}, \"Method\" : \"{6}\", \"BytesTransferred\" : {7} }}",
context.SessionId,
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket),
context.MessageType,
context.MessageId,
context.MethodName,
context.BytesTransferred
);
}
context.StopWatchTimeout();
context.Timeout -= OnSendTimeout;
context.ClearBuffers();
if (context.MessageType == MessageType.Notification)
{
try {
Action <Exception, bool> handler = null;
try {
pendingNotificationTable.TryRemove(context.SessionId, out handler);
}
finally {
var rpcError = context.SocketError.ToClientRpcError();
handler?.Invoke(rpcError.IsSuccess ? null : rpcError.ToException(), context.CompletedSynchronously);
}
}
finally {
Manager.ReturnRequestContext(context);
OnProcessFinished();
Manager.ReturnTransport(this);
}
}
else
{
if (Manager.Configuration.WaitTimeout != null &&
(Manager.Configuration.WaitTimeout.Value - context.ElapsedTime).TotalMilliseconds < 1.0)
{
OnWaitTimeout(context);
Manager.ReturnRequestContext(context);
Manager.ReturnTransport(this);
return;
}
var responseContext = Manager.GetResponseContext(this, context.RemoteEndPoint);
if (Manager.Configuration.WaitTimeout != null)
{
responseContext.Timeout += OnReceiveTimeout;
responseContext.StartWatchTimeout(Manager.Configuration.WaitTimeout.Value - context.ElapsedTime);
}
Manager.ReturnRequestContext(context);
Receive(responseContext);
}
}
/// <summary>
/// Sends a request or notification message with the specified context.
/// </summary>
/// <param name="context">The context information.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="context"/> is <c>null</c>.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="context"/> is not bound to this transport.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// This instance has been disposed.
/// </exception>
/// <exception cref="InvalidOperationException">
/// This instance is in shutdown.
/// Or the message ID or session ID is duplicated.
/// </exception>
/// <exception cref="RpcException">
/// Failed to send request or notification to the server.
/// </exception>
public void Send(ClientRequestContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
if (!ReferenceEquals(context.BoundTransport, this))
{
throw new ArgumentException("Context is not bound to this object.", nameof(context));
}
VerifyIsNotDisposed();
if (IsClientShutdown)
{
throw new InvalidOperationException("This transport is in shutdown.");
}
Contract.EndContractBlock();
if (IsServerShutdown)
{
throw new RpcErrorMessage(RpcError.TransportError, "Server did shutdown socket.", null).ToException();
}
context.Prepare();
if (context.MessageType == MessageType.Request)
{
if (!pendingRequestTable.TryAdd(context.MessageId.Value, context.RequestCompletionCallback))
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, "Message ID '{0}' is already used.", context.MessageId));
}
}
else
{
if (!pendingNotificationTable.TryAdd(context.SessionId, context.NotificationCompletionCallback))
{
throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, "Session ID '{0}' is already used.", context.MessageId));
}
}
if (MsgPackRpcClientProtocolsTrace.ShouldTrace(MsgPackRpcClientProtocolsTrace.SendOutboundData))
{
var socket = BoundSocket;
MsgPackRpcClientProtocolsTrace.TraceEvent(
MsgPackRpcClientProtocolsTrace.SendOutboundData,
"Send request/notification. {{ \"SessionID\" : {0}, \"Socket\" : 0x{1:X}, \"RemoteEndPoint\" : \"{2}\", \"LocalEndPoint\" : \"{3}\", \"Type\" : \"{4}\", \"MessageID\" : {5}, \"Method\" : \"{6}\", \"BytesTransferring\" : {7} }}",
context.SessionId,
GetHandle(socket),
GetRemoteEndPoint(socket, context),
GetLocalEndPoint(socket),
context.MessageType,
context.MessageId,
context.MethodName,
context.sendingBuffer.Sum(segment => (long)segment.Count)
);
}
// Because exceptions here means client error, it should be handled like other client error.
// Therefore, no catch clauses here.
ApplyFilters(AfterSerializationFilters, context);
if (Manager.Configuration.WaitTimeout != null)
{
context.Timeout += OnSendTimeout;
context.StartWatchTimeout(Manager.Configuration.WaitTimeout.Value);
}
SendCore(context);
}