async Task StartProtocolHead()
{
string certificateValue = await SecretsHelper.GetSecret("IotHubMqttHeadCert");
byte[] cert = Convert.FromBase64String(certificateValue);
var certificate = new X509Certificate2(cert);
// TODO for now this is empty as will suffice for SAS X.509 thumbprint auth but we will need other CA certs for X.509 CA validation
var trustBundle = new List <X509Certificate2>();
string edgeDeviceConnectionString = await SecretsHelper.GetSecretFromConfigKey("edgeCapableDeviceConnStrKey");
// TODO - After IoTHub supports MQTT, remove this and move to using MQTT for upstream connections
await ConnectToIotHub(edgeDeviceConnectionString);
ConfigHelper.TestConfig[EdgeHubConstants.ConfigKey.IotHubConnectionString] = edgeDeviceConnectionString;
IDependencyManager dependencyManager = new DependencyManager(ConfigHelper.TestConfig, certificate, trustBundle, this.sslProtocols);
Hosting hosting = Hosting.Initialize(ConfigHelper.TestConfig, certificate, dependencyManager, true, this.sslProtocols);
this.hosting = hosting;
IContainer container = hosting.Container;
// CloudConnectionProvider and RoutingEdgeHub have a circular dependency. So set the
// EdgeHub on the CloudConnectionProvider before any other operation
ICloudConnectionProvider cloudConnectionProvider = await container.Resolve <Task <ICloudConnectionProvider> >();
IEdgeHub edgeHub = await container.Resolve <Task <IEdgeHub> >();
cloudConnectionProvider.BindEdgeHub(edgeHub);
IConfigSource configSource = await container.Resolve <Task <IConfigSource> >();
ConfigUpdater configUpdater = await container.Resolve <Task <ConfigUpdater> >();
await configUpdater.Init(configSource);
ILogger logger = container.Resolve <ILoggerFactory>().CreateLogger("EdgeHub");
MqttProtocolHead mqttProtocolHead = await container.Resolve <Task <MqttProtocolHead> >();
AmqpProtocolHead amqpProtocolHead = await container.Resolve <Task <AmqpProtocolHead> >();
var httpProtocolHead = new HttpProtocolHead(hosting.WebHost);
this.protocolHead = new EdgeHubProtocolHead(new List <IProtocolHead> {
mqttProtocolHead, amqpProtocolHead, httpProtocolHead
}, logger);
await this.protocolHead.StartAsync();
}