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>
/// Sets the bound <see cref="ClientTransport"/>.
/// </summary>
/// <param name="transport">The binding transport.</param>
internal void SetTransport(ClientTransport transport)
{
Contract.Requires(transport != null);
nextProcess = transport.UnpackResponseHeader;
base.SetTransport(transport);
}
internal ClientRequestContext GetRequestContext(ClientTransport transport)
{
Contract.Requires(transport != null);
Contract.Ensures(Contract.Result <ClientRequestContext>() != null);
var result = RequestContextPool.Borrow();
result.SetTransport(transport);
result.RenewSessionId();
return(result);
}
/// <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>
/// Returns specified <see cref="ClientTransport"/> to the internal pool.
/// </summary>
/// <param name="transport">The <see cref="ClientTransport"/> to be returned.</param>
internal sealed override void ReturnTransport(ClientTransport transport)
{
ReturnTransport((TTransport)transport);
}
/// <summary> /// Returns specified <see cref="ClientTransport"/> to the internal pool. /// </summary> /// <param name="transport">The <see cref="ClientTransport"/> to be returned.</param> internal abstract void ReturnTransport(ClientTransport transport);