ServerBootstrap SetupBootstrap() { // pull/customize configuration int maxInboundMessageSize = this.settingsProvider.GetIntegerSetting("MaxInboundMessageSize", 256 * 1024); int connectionPoolSize = this.settingsProvider.GetIntegerSetting("IotHubClient.ConnectionPoolSize", DefaultConnectionPoolSize); TimeSpan connectionIdleTimeout = this.settingsProvider.GetTimeSpanSetting("IotHubClient.ConnectionIdleTimeout", DefaultConnectionIdleTimeout); string connectionString = this.iotHubClientSettings.IotHubConnectionString; // setup message processing logic var telemetryProcessing = TopicHandling.CompileParserFromUriTemplates(new[] { "devices/{deviceId}/messages/events" }); var commandProcessing = TopicHandling.CompileFormatterFromUriTemplate("devices/{deviceId}/messages/devicebound"); MessagingBridgeFactoryFunc bridgeFactory = IotHubBridge.PrepareFactory(connectionString, connectionPoolSize, connectionIdleTimeout, this.iotHubClientSettings, bridge => { bridge.RegisterRoute(topic => true, new TelemetrySender(bridge, telemetryProcessing)); // handle all incoming messages with TelemetrySender bridge.RegisterSource(new CommandReceiver(bridge, PooledByteBufferAllocator.Default, commandProcessing)); // handle device command queue bridge.RegisterSource(new MethodHandler("SendMessageToDevice", bridge, (request, dispatcher) => DispatchCommands(bridge.DeviceId, request, dispatcher))); // register }); var acceptLimiter = new AcceptLimiter(MaxConcurrentAccepts); return(new ServerBootstrap() .Group(this.parentEventLoopGroup, this.eventLoopGroup) .Option(ChannelOption.SoBacklog, ListenBacklogSize) .Option(ChannelOption.AutoRead, false) .ChildOption(ChannelOption.Allocator, PooledByteBufferAllocator.Default) .ChildOption(ChannelOption.AutoRead, false) .Channel <TcpServerSocketChannel>() .Handler(acceptLimiter) .ChildHandler(new ActionChannelInitializer <ISocketChannel>(channel => { channel.Pipeline.AddLast( TlsHandler.Server(this.tlsCertificate), new AcceptLimiterTlsReleaseHandler(acceptLimiter), MqttEncoder.Instance, new MqttDecoder(true, maxInboundMessageSize), new MqttAdapter( this.settings, this.sessionStateManager, this.authProvider, this.qos2StateProvider, bridgeFactory)); }))); }
async Task EnsureServerInitializedAsync() { if (this.ServerAddress != null) { return; } int threadCount = Environment.ProcessorCount; var executorGroup = new MultithreadEventLoopGroup(threadCount); BlobSessionStatePersistenceProvider sessionStateProvider = await BlobSessionStatePersistenceProvider.CreateAsync( this.settingsProvider.GetSetting("BlobSessionStatePersistenceProvider.StorageConnectionString"), this.settingsProvider.GetSetting("BlobSessionStatePersistenceProvider.StorageContainerName")); TableQos2StatePersistenceProvider qos2StateProvider = await TableQos2StatePersistenceProvider.CreateAsync( this.settingsProvider.GetSetting("TableQos2StatePersistenceProvider.StorageConnectionString"), this.settingsProvider.GetSetting("TableQos2StatePersistenceProvider.StorageTableName")); var settings = new Settings(this.settingsProvider); var iotHubClientSettings = new IotHubClientSettings(this.settingsProvider); var authProvider = new SasTokenDeviceIdentityProvider(); var telemetryProcessing = TopicHandling.CompileParserFromUriTemplates(new[] { "devices/{deviceId}/messages/events" }); var commandProcessing = TopicHandling.CompileFormatterFromUriTemplate("devices/{deviceId}/messages/devicebound/{subTopic=}"); MessagingBridgeFactoryFunc bridgeFactory = IotHubBridge.PrepareFactory(iotHubClientSettings.IotHubConnectionString, 400, TimeSpan.FromMinutes(5), iotHubClientSettings, bridge => { bridge.RegisterRoute(topic => true, new TelemetrySender(bridge, telemetryProcessing)); // handle all incoming messages with TelemetrySender bridge.RegisterSource(new CommandReceiver(bridge, PooledByteBufferAllocator.Default, commandProcessing)); // handle device command queue bridge.RegisterSource(new MethodHandler("command", bridge, (request, dispatcher) => DispatchCommands(bridge.DeviceId, request, dispatcher))); // register }); ServerBootstrap server = new ServerBootstrap() .Group(executorGroup) .Channel <TcpServerSocketChannel>() .ChildOption(ChannelOption.Allocator, PooledByteBufferAllocator.Default) .ChildOption(ChannelOption.AutoRead, false) .ChildHandler(new ActionChannelInitializer <IChannel>(ch => { ch.Pipeline.AddLast(TlsHandler.Server(this.tlsCertificate)); ch.Pipeline.AddLast( MqttEncoder.Instance, new MqttDecoder(true, 256 * 1024), new LoggingHandler("SERVER"), new MqttAdapter( settings, sessionStateProvider, authProvider, qos2StateProvider, bridgeFactory), new XUnitLoggingHandler(this.output)); })); IChannel serverChannel = await server.BindAsync(IPAddress.Any, this.ProtocolGatewayPort); this.ScheduleCleanup(async() => { await serverChannel.CloseAsync(); await executorGroup.ShutdownGracefullyAsync(); }); this.ServerAddress = IPAddress.Loopback; }