using Microsoft.Azure.Devices.Client.Transport.Mqtt; // package library: Microsoft.Azure.Devices.Client public class AmqpTransport : ITransport { private MqttTransportSettings _settings; public AmqpTransport(string deviceId, string sharedAccessKey) { _settings = new MqttTransportSettings(TransportType.Amqp_Tcp_Only); _settings.RemoteCertificateValidationCallback = (sender, certificate, chain, sslPolicyErrors) => true; _settings.ClientCertificate = null; _settings.AuthenticationMethod = new DeviceAuthenticationWithRegistrySymmetricKey(deviceId, sharedAccessKey); } public Task OpenAsync() { // Implementation of how to open the transport } public Task SendEventAsync(Message message) { // Implementation of how to send a message using the transport } public TaskThis implementation uses the MQTT transport library from Microsoft.Azure.Devices.Client. The constructor takes the device ID and shared access key as parameters, which are used to authenticate the device with the IoT Hub. The implementation of each method uses the appropriate API from the MQTT library to open, send, receive, and close the transport. Overall, this implementation is useful for sending and receiving messages from an IoT device using the AMQP transport protocol. Package library: Microsoft.Azure.Devices.Client.ReceiveAsync() { // Implementation of how to receive a message using the transport } public Task CloseAsync() { // Implementation of how to close the transport } }