internal static Task MessageLoopAsync(
this TcpClient client,
ICommunicationChannel channel,
Action <Exception> errorHandler,
CancellationToken cancellationToken)
{
Exception error = null;
// Set read timeout to avoid blocking receive raw message
while (channel != null && !cancellationToken.IsCancellationRequested)
{
try
{
if (client.Client.Poll(STREAMREADTIMEOUT, SelectMode.SelectRead))
{
channel.NotifyDataAvailable();
}
}
catch (IOException ioException)
{
var socketException = ioException.InnerException as SocketException;
if (socketException != null &&
socketException.SocketErrorCode == SocketError.TimedOut)
{
EqtTrace.Info(
"Socket: Message loop: failed to receive message due to read timeout {0}",
ioException);
}
else
{
EqtTrace.Error(
"Socket: Message loop: failed to receive message due to socket error {0}",
ioException);
error = ioException;
break;
}
}
catch (Exception exception)
{
EqtTrace.Error(
"Socket: Message loop: failed to receive message {0}",
exception);
error = exception;
break;
}
}
// Try clean up and raise client disconnected events
errorHandler(error);
return(Task.FromResult(0));
}
internal static Task MessageLoopAsync(
this TcpClient client,
ICommunicationChannel channel,
Action <Exception> errorHandler,
CancellationToken cancellationToken)
{
Exception error = null;
var remoteEndPoint = string.Empty;
var localEndPoint = string.Empty;
try
{
remoteEndPoint = client.Client.RemoteEndPoint?.ToString();
localEndPoint = client.Client.LocalEndPoint?.ToString();
}
catch (SocketException socketException)
{
EqtTrace.Error(
"TcpClientExtensions.MessageLoopAsync: Failed to access the endpoint due to socket error: {0}",
socketException);
}
// Set read timeout to avoid blocking receive raw message
while (channel != null && !cancellationToken.IsCancellationRequested)
{
EqtTrace.Verbose("TcpClientExtensions.MessageLoopAsync: Polling on remoteEndPoint: {0} localEndPoint: {1}", remoteEndPoint, localEndPoint);
try
{
if (client.Client.Poll(STREAMREADTIMEOUT, SelectMode.SelectRead))
{
EqtTrace.Verbose("TcpClientExtensions.MessageLoopAsync: NotifyDataAvailable remoteEndPoint: {0} localEndPoint: {1}", remoteEndPoint, localEndPoint);
channel.NotifyDataAvailable();
}
}
catch (IOException ioException)
{
if (ioException.InnerException is SocketException socketException &&
socketException.SocketErrorCode == SocketError.TimedOut)
{
EqtTrace.Info(
"Socket: Message loop: failed to receive message due to read timeout {0}, remoteEndPoint: {1} localEndPoint: {2}",
ioException,
remoteEndPoint,
localEndPoint);
}
