private async Task ProcessRequestAsync(ICoapConnectionInformation connection, byte[] payload)
{
try
{
await _coapHandler.ProcessRequestAsync(connection, payload);
}
catch (Exception ex)
{
_logger?.LogError(CoapUdpLoggingEvents.TransportRequestsLoop, ex, "Unexpected exception was thrown");
throw;
}
}
private async Task HandleSession(CoapDtlsServerClientEndPoint session)
{
var state = new Dictionary <string, object>
{
{ "RemoteEndPoint", session?.EndPoint }
};
using (_logger.BeginScope(state))
{
try
{
_logger.LogDebug("Trying to accept TLS connection from {EndPoint}", session.EndPoint);
var server = _tlsServerFactory.Create();
session.Accept(_serverProtocol, server);
if (session.ConnectionInfo != null)
{
_logger.LogInformation("New TLS connection from {EndPoint}, Server Info: {ServerInfo}", session.EndPoint, session.ConnectionInfo);
}
else
{
_logger.LogInformation("New TLS connection from {EndPoint}", session.EndPoint);
}
var connectionInfo = new CoapDtlsConnectionInformation
{
LocalEndpoint = _endPoint,
RemoteEndpoint = session,
TlsServer = server
};
while (!session.IsClosed && !_cts.IsCancellationRequested)
{
var packet = await session.ReceiveAsync(_cts.Token);
_logger.LogDebug("Handling CoAP Packet from {EndPoint}", session.EndPoint);
await _coapHandler.ProcessRequestAsync(connectionInfo, packet.Payload);
_logger.LogDebug("CoAP request from {EndPoint} handled!", session.EndPoint);
}
}
catch (OperationCanceledException)
{
}
catch (DtlsConnectionClosedException)
{
}
catch (TlsFatalAlert tlsAlert)
{
if (!(tlsAlert.InnerException is DtlsConnectionClosedException) && tlsAlert.AlertDescription != AlertDescription.user_canceled)
{
_logger.LogWarning(tlsAlert, "TLS Error");
}
}
catch (Exception ex)
{
_logger.LogError(ex, "Error while handling session");
}
finally
{
_logger.LogInformation("Connection from {EndPoint} closed", session.EndPoint);
_sessions.TryRemove(session.EndPoint, out _);
}
}
}