private async Task PushToQueue(TcpMessage message)
{
await AsyncHelper.RedirectToThreadPool();
_messageQueue.Enqueue(message);
await SendAllMessagesFromQueue();
}
public async Task SendMessage(TcpMessage tcpMessage)
{
await AsyncHelper.RedirectToThreadPool();
var mesSeqNo = _messageSequenceNumber++;
Debug.WriteLine($"Sending message with seq_no {mesSeqNo}");
var encodedMessage = tcpMessage.Encode();
await TcpService.Send(encodedMessage, tcpMessage.CancellationToken);
}
public async Task <Task <bool> > Send(byte[] packet, CancellationToken cancellationToken = default(CancellationToken))
{
await AsyncHelper.RedirectToThreadPool();
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
TcpMessage tcpMessage = new TcpMessage(_messageSequenceNumber, packet, tcs, cancellationToken);
await PushToQueue(tcpMessage);
return(tcs.Task);
}
public async Task <byte[]> Receive()
{
await AsyncHelper.RedirectToThreadPool();
TcpMessage result = await transport.Receieve();
using (var memoryStream = new MemoryStream(result.body))
{
using (BinaryReader binaryReader = new BinaryReader(memoryStream))
{
binaryReader.ReadInt64(); // authKeyid
binaryReader.ReadInt64(); // messageId
int messageLength = binaryReader.ReadInt32();
byte[] response = binaryReader.ReadBytes(messageLength);
return(response);
}
}
}
public async Task Send(byte[] packet)
{
if (!tcpClient.Connected)
{
throw new InvalidOperationException("Client not connected to server.");
}
var tcpMessage = new TcpMessage(sendCounter, packet);
try
{
await sendLock.WaitAsync();
await tcpClient.GetStream().WriteAsync(tcpMessage.Encode(), 0, tcpMessage.Encode().Length);
sendCounter++;
}
finally
{
sendLock.Release();
}
}
private async Task SendFromQueue()
{
await AsyncHelper.RedirectToThreadPool();
while (!_messageQueue.IsEmpty)
{
_messageQueue.TryDequeue(out var item);
TcpMessage message = item;
try
{
await SendMessage(message);
message.TaskCompletionSource.SetResult(true);
}
catch (Exception ex)
{
Debug.WriteLine("Sending confirmation for messages failed", ex);
message.TaskCompletionSource.SetException(ex);
}
}
}