private async void ConnectionReceived(SocketAsyncEventArgs acceptArgs)
{
if (_connection != null)
{
// send sensor busy?
acceptArgs.AcceptSocket?.Dispose();
}
else
{
try
{
_connection = acceptArgs.AcceptSocket;
var helloData = await _connection.ReceiveAsync(HelloPacket.Size);
// todo check version header
var helloPacket = HelloPacket.Parse(helloData, 0);
var helloResponse = new HelloPacket(1);
await _connection.SendAsync(helloResponse.GetData());
Init((IPEndPoint)_connection.RemoteEndPoint);
StartReceivingData();
StartSendingData();
}
catch (Exception)
{
// todo log?
_connection = null;
}
}
ResetAccept(acceptArgs);
}
public async Task <bool> OpenNetworkAsync()
{
if (_connection != null)
{
return(true);
}
// TODO winsock/Socket vs. RT sockets
try
{
var con = new Socket(SocketType.Stream, ProtocolType.Tcp);
// write header/ protocol version/ connection config
var helloPacket = new HelloPacket(1);
_connection = await con.ConnectAsync(_sensorAddress, helloPacket.GetData());
// read the response from the server
var helloResponse = await _connection.ReceiveAsync(HelloPacket.Size);
helloPacket = HelloPacket.Parse(helloResponse, 0);
// TODO: compare protocol versions
// Start receive loop - TODO: cancellation token
Init((IPEndPoint)_connection.RemoteEndPoint);
StartReceivingData();
StartSendingData();
}
catch (Exception)
{
_connection?.Dispose();
_connection = null;
IsConnected = false;
return(false);
}
IsConnected = true;
return(true);
}