private void OnClientConnected(object sender, MqttClientConnectedEventArgs eventArgs)
{
MqttTrace.Information(nameof(MqttServer), $"Client '{eventArgs.Identifier}': Connected.");
ClientConnected?.Invoke(this, eventArgs);
Task.Run(() => _clientSessionsManager.RunClientSessionAsync(eventArgs), _cancellationTokenSource.Token);
}
public async Task RunClientSessionAsync(MqttClientConnectedEventArgs eventArgs)
{
try
{
if (!(await eventArgs.ClientAdapter.ReceivePacketAsync(_options.DefaultCommunicationTimeout, CancellationToken.None).ConfigureAwait(false) is MqttConnectPacket connectPacket))
{
throw new MqttProtocolViolationException("The first packet from a client must be a 'CONNECT' packet [MQTT-3.1.0-1].");
}
// Switch to the required protocol version before sending any response.
eventArgs.ClientAdapter.PacketSerializer.ProtocolVersion = connectPacket.ProtocolVersion;
var connectReturnCode = ValidateConnection(connectPacket);
if (connectReturnCode != MqttConnectReturnCode.ConnectionAccepted)
{
await eventArgs.ClientAdapter.SendPacketsAsync(_options.DefaultCommunicationTimeout, CancellationToken.None, new MqttConnAckPacket
{
ConnectReturnCode = connectReturnCode
}).ConfigureAwait(false);
return;
}
var clientSession = GetOrCreateClientSession(connectPacket);
await eventArgs.ClientAdapter.SendPacketsAsync(_options.DefaultCommunicationTimeout, CancellationToken.None, new MqttConnAckPacket
{
ConnectReturnCode = connectReturnCode,
IsSessionPresent = clientSession.IsExistingSession
}).ConfigureAwait(false);
await clientSession.Session.RunAsync(eventArgs.Identifier, connectPacket.WillMessage, eventArgs.ClientAdapter).ConfigureAwait(false);
}
catch (Exception exception)
{
MqttTrace.Error(nameof(MqttServer), exception, exception.Message);
}
finally
{
await eventArgs.ClientAdapter.DisconnectAsync(_options.DefaultCommunicationTimeout).ConfigureAwait(false);
}
}
public async Task RunClientSessionAsync(MqttClientConnectedEventArgs eventArgs)
{
try
{
var connectPacket = await eventArgs.ClientAdapter.ReceivePacketAsync(_options.DefaultCommunicationTimeout) as MqttConnectPacket;
if (connectPacket == null)
{
throw new MqttProtocolViolationException("The first packet from a client must be a 'CONNECT' packet [MQTT-3.1.0-1].");
}
var connectReturnCode = ValidateConnection(connectPacket);
if (connectReturnCode != MqttConnectReturnCode.ConnectionAccepted)
{
await eventArgs.ClientAdapter.SendPacketAsync(new MqttConnAckPacket
{
ConnectReturnCode = connectReturnCode
}, _options.DefaultCommunicationTimeout);
return;
}
var clientSession = GetOrCreateClientSession(connectPacket);
await eventArgs.ClientAdapter.SendPacketAsync(new MqttConnAckPacket
{
ConnectReturnCode = connectReturnCode,
IsSessionPresent = clientSession.IsExistingSession
}, _options.DefaultCommunicationTimeout);
await clientSession.Session.RunAsync(eventArgs.Identifier, connectPacket.WillMessage, eventArgs.ClientAdapter);
}
catch (Exception exception)
{
MqttTrace.Error(nameof(MqttServer), exception, exception.Message);
}
finally
{
await eventArgs.ClientAdapter.DisconnectAsync();
}
}
private void OnClientConnected(object sender, MqttClientConnectedEventArgs eventArgs)
{
_logger.Info <MqttServer>("Client '{0}': Connected.", eventArgs.Client.ClientId);
ClientConnected?.Invoke(this, eventArgs);
}
private void OnClientConnected(object sender, MqttClientConnectedEventArgs eventArgs)
{
MqttNetTrace.Information(nameof(MqttServer), "Client '{0}': Connected.", eventArgs.Client.ClientId);
ClientConnected?.Invoke(this, eventArgs);
}