public async Task <ReceivedWapMessage> CallMethod(IWapMessage msg, CancellationToken ct = default(CancellationToken))
{
MethodCall call = new MethodCall();
call.Messsage = msg;
var hdlr = ct.Register(call.CompletionSource.SetCanceled);
await _methodCalls.Add(msg.SequenceNumber, call, ct);
try
{
await SendMesssage(msg);
var ret = await call.CompletionSource.Task;
return(ret);
}
finally
{
hdlr.Dispose();
await _methodCalls.Remove(msg.SequenceNumber); // cancellation ignored as we usually get here when the task is cancelled already but we still want to remove the call
}
}
protected async Task <bool> SendMesssage(IWapMessage msg)
{
if (!Running)
{
return(false);
}
List <byte> sendList = new List <byte>();
sendList.Add(StartByte);
sendList.AddRange(EscapeBytes(msg.GetBytes()));
sendList.Add(EndByte);
await _txSem.WaitAsync().ConfigureAwait(false);
await _stream.WriteAsync(sendList.ToArray(), 0, sendList.Count).ConfigureAwait(false);
await _stream.FlushAsync().ConfigureAwait(false);
_txSem.Release();
return(true);
}
public Task <bool> SendEventMessage(IWapMessage msg)
{
return(SendMesssage(msg));
}
