private async Task ConnectIoTEdgeDeviceClient(CancellationToken stopToken)
{
upstreamClient = factory.CreateMqttClient();
logger.LogInformation($"HostName: {upstreamClientCredentials.HostName} : SasKey: {upstreamClientCredentials.SaSKey}");
var sig = EdgeTools.GenerateSasToken(upstreamClientCredentials.HostName,
upstreamClientCredentials.DeviceId,
upstreamClientCredentials.SaSKey,
TimeSpan.FromDays(365 * 1000));
logger.LogInformation($"Device {upstreamClientCredentials.DeviceId} Shared Sig : {sig}");
var upstreamOptions = new MqttClientOptionsBuilder()
.WithTcpServer(upstreamClientCredentials.HostName, 8883)
.WithClientId(upstreamClientCredentials.DeviceId)
.WithCredentials(upstreamClientCredentials.MqttDeviceUserName, sig)
.WithProtocolVersion(MqttProtocolVersion.V311)
.WithTls(new MqttClientOptionsBuilderTlsParameters()
{
UseTls = true
})
.Build();
try
{
logger.LogInformation($"Connecting upstream client {device.IothubDeviceId}");
upstreamClient.UseConnectedHandler(async e => {
logger.LogInformation($"Device {upstreamClientCredentials.DeviceId} connected");
// Subscribe to cloud to device messages
var topic = $"devices/{upstreamClientCredentials.DeviceId}/messages/devicebound/#";
await upstreamClient.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic(topic).Build());
// Initialise twin handling
//TwinStateLifecycle twinState = new TwinStateLifecycle(clock, upstreamClient);
await Task.CompletedTask;
});
upstreamClient.UseDisconnectedHandler(async e => {
logger.LogInformation($"Device {upstreamClientCredentials.DeviceId} disconnected");
await Task.CompletedTask;
});
upstreamClient.UseApplicationMessageReceivedHandler(async e => {
await iotEdgeClient.HandleMessage(e, stopToken);
});
await upstreamClient.ConnectAsync(upstreamOptions, stopToken);
} catch (Exception ex)
{
logger.LogError($"{ex}");
}
}
public static CompositeDeviceClient CreateInModule(IConfiguration config,
CompositeDeviceConfiguration.Device device,
Messaging.MessageHandler upstreamToDownstream,
Messaging.MessageHandler downstreamToUpstream,
IClock clock,
ILoggerFactory loggerFactory)
{
var moduleConnectionString = config.GetValue <string>("EdgeHubConnectionString");
var upstreamClientCredentials = EdgeTools.GetDeviceCredentialsFromModule(moduleConnectionString, device.IothubDeviceId, device.SasKey);
var downstreamClientCredentials = EdgeTools.GetMqttDeviceCredentials(device);
return(new CompositeDeviceClient(device, upstreamClientCredentials, downstreamClientCredentials, upstreamToDownstream, downstreamToUpstream, clock, loggerFactory));
}
