/// <inheritdoc/> public void Dispose() { _faultTolerantSession?.Dispose(); _faultTolerantSession = null; _refreshTokenTimer?.Dispose(); _refreshTokenTimer = null; _clientWebSocketTransport?.Dispose(); _clientWebSocketTransport = null; }
private async Task <AmqpSession> CreateSessionAsync(TimeSpan timeout) { Logging.Enter(this, timeout, nameof(CreateSessionAsync)); TransportBase transport = null; try { var timeoutHelper = new TimeoutHelper(timeout); _refreshTokenTimer.Cancel(); AmqpSettings amqpSettings = CreateAmqpSettings(); if (_useWebSocketOnly) { // Try only AMQP transport over WebSocket transport = _clientWebSocketTransport = (ClientWebSocketTransport) await CreateClientWebSocketTransportAsync(timeoutHelper.RemainingTime()) .ConfigureAwait(false); } else { TlsTransportSettings tlsTransportSettings = CreateTlsTransportSettings(); var amqpTransportInitiator = new AmqpTransportInitiator(amqpSettings, tlsTransportSettings); try { transport = await amqpTransportInitiator.ConnectTaskAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false); } catch (Exception e) when(!(e is AuthenticationException)) { Logging.Error(this, e, nameof(CreateSessionAsync)); if (Fx.IsFatal(e)) { throw; } // AMQP transport over TCP failed. Retry AMQP transport over WebSocket if (timeoutHelper.RemainingTime() != TimeSpan.Zero) { transport = _clientWebSocketTransport = (ClientWebSocketTransport) await CreateClientWebSocketTransportAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false); } else { throw; } } } Logging.Info(this, $"Initialized {nameof(TransportBase)}, ws={_useWebSocketOnly}"); var amqpConnectionSettings = new AmqpConnectionSettings { MaxFrameSize = AmqpConstants.DefaultMaxFrameSize, ContainerId = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture), // Use a human readable link name to help with debugging HostName = ConnectionString.AmqpEndpoint.Host, }; var amqpConnection = new AmqpConnection(transport, amqpSettings, amqpConnectionSettings); await amqpConnection.OpenAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false); Logging.Info(this, $"{nameof(AmqpConnection)} opened."); var sessionSettings = new AmqpSessionSettings { Properties = new Fields(), }; try { AmqpSession amqpSession = amqpConnection.CreateSession(sessionSettings); await amqpSession.OpenAsync(timeoutHelper.RemainingTime()).ConfigureAwait(false); Logging.Info(this, $"{nameof(AmqpSession)} opened."); // This adds itself to amqpConnection.Extensions var cbsLink = new AmqpCbsLink(amqpConnection); await SendCbsTokenAsync(cbsLink, timeoutHelper.RemainingTime()).ConfigureAwait(false); return(amqpSession); } catch (Exception ex) when(!ex.IsFatal()) { Logging.Error(this, ex, nameof(CreateSessionAsync)); _clientWebSocketTransport?.Dispose(); _clientWebSocketTransport = null; if (amqpConnection.TerminalException != null) { throw AmqpClientHelper.ToIotHubClientContract(amqpConnection.TerminalException); } amqpConnection.SafeClose(ex); throw; } } finally { Logging.Exit(this, timeout, nameof(CreateSessionAsync)); } }
async Task <AmqpSession> CreateSessionAsync(TimeSpan timeout) { TimeoutHelper timeoutHelper = new TimeoutHelper(timeout); this.refreshTokenTimer.Cancel(); var amqpSettings = this.CreateAmqpSettings(); var tlsTransportSettings = this.CreateTlsTransportSettings(); var amqpTransportInitiator = new AmqpTransportInitiator(amqpSettings, tlsTransportSettings); TransportBase transport; try { transport = await amqpTransportInitiator.ConnectTaskAsync(timeoutHelper.RemainingTime()); } catch (Exception e) { if (Fx.IsFatal(e)) { throw; } // Amqp transport over TCP failed. Retry Amqp transport over WebSocket if (timeoutHelper.RemainingTime() != TimeSpan.Zero) { Uri websocketUri = new Uri(WebSocketConstants.Scheme + this.ConnectionString.HostName + ":" + WebSocketConstants.SecurePort + WebSocketConstants.UriSuffix); var websocket = await this.CreateClientWebSocket(websocketUri, timeoutHelper.RemainingTime()); transport = new ClientWebSocketTransport( websocket, this.connectionString.IotHubName, null, null); } else { throw; } } AmqpConnectionSettings amqpConnectionSettings = new AmqpConnectionSettings() { MaxFrameSize = AmqpConstants.DefaultMaxFrameSize, ContainerId = Guid.NewGuid().ToString("N"), HostName = this.connectionString.AmqpEndpoint.Host }; var amqpConnection = new AmqpConnection(transport, amqpSettings, amqpConnectionSettings); await amqpConnection.OpenAsync(timeoutHelper.RemainingTime()); var sessionSettings = new AmqpSessionSettings() { Properties = new Fields() }; var amqpSession = amqpConnection.CreateSession(sessionSettings); await amqpSession.OpenAsync(timeoutHelper.RemainingTime()); // This adds itself to amqpConnection.Extensions var cbsLink = new AmqpCbsLink(amqpConnection); await this.SendCbsTokenAsync(cbsLink, timeoutHelper.RemainingTime()); return(amqpSession); }