/// <summary>
/// Reading the incoming messages from the network client and schedules them
/// with the incoming message queue.
/// </summary>
/// <returns>A future which will complete when the client disconnects.</returns>
private async Task EnqueueIncomingMessages()
{
//We need a token for canceling this task when a user disconnects
CancellationToken incomingCancellationToken = CreateNewManagedCancellationTokenSource().Token;
try
{
while (!incomingCancellationToken.IsCancellationRequested)
{
NetworkIncomingMessage <TPayloadReadType> message = await UnmanagedClient.ReadAsync(incomingCancellationToken)
.ConfigureAwait(false);
//If the message is null then the connection is no longer valid
//The socket likely disconnected so we should stop the network thread
if (message == null)
{
//We have to publish a null so it can be consumed by the user
//to know that the socket is dead
await IncomingMessageQueue.EnqueueAsync(null, CancellationToken.None)
.ConfigureAwait(false);
StopNetwork();
}
//if have to check the token again because the message may be null and may have been canceled mid-read
if (incomingCancellationToken.IsCancellationRequested)
{
continue;
}
//Try to notify interceptors of a payload that has come in. They may want it
if (!InterceptorManager.TryNotifyOutstandingInterceptors(message.Payload))
{
await IncomingMessageQueue.EnqueueAsync(message, incomingCancellationToken)
.ConfigureAwait(false);
}
}
}
catch (TaskCanceledException e)
{
//This is an expected exception that happens when the token is canceled
if (Logger.IsDebugEnabled)
{
Logger.Debug($"Expected Task Canceled Exception: {e.Message}\n\n Stack: {e.StackTrace}");
}
//We cannot rethrow because this can cause application instability on threadpools
}
catch (Exception e)
{
if (Logger.IsErrorEnabled)
{
Logger.Error($"Error: {e.Message}\n\n Stack: {e.StackTrace}");
}
//We cannot rethrow because this can cause application instability on threadpools
}
finally
{
try
{
await DisconnectAsync(0);
}
catch (Exception)
{
}
}
//TODO: Should we do anything after the dispatch has stopped?
}
