/// <summary>
/// Connects an MQTT client to an AWS IoT Endpoint using an authenticated
/// MQTT over WebSocket connection request
/// </summary>
/// <param name="client"></param>
/// <param name="iotEndpointAddress">The AWS account-specific AWS IoT endpoint address.</param>
/// <param name="mqttClient">An MQTT.NET client instance to connect.</param>
/// <param name="cancelToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
public static async Task <MqttClientAuthenticateResult> ConnectMqttWebSocketsClientAsync(this AmazonIoTDeviceGatewayClient client,
string iotEndpointAddress, IMqttClient mqttClient, CancellationToken cancelToken = default)
{
if (mqttClient is null)
{
throw new ArgumentNullException(nameof(mqttClient));
}
var optionsTask = client.CreateMqttWebSocketClientOptionsAsync(iotEndpointAddress, cancelToken);
return(await mqttClient.ConnectAsync(await optionsTask.ConfigureAwait(continueOnCapturedContext: false))
.ConfigureAwait(continueOnCapturedContext: false));
}
/// <summary>
/// Provides the MQTT client options to create an authenticated MQTT
/// over WebSocket connection to an AWS IoT Device Gateway endpoint.
/// </summary>
/// <param name="client">The authenticated AWS IoT Device Gateway client.</param>
/// <param name="iotEndpointAddress">The AWS account-specific AWS IoT endpoint address.</param>
/// <param name="cancelToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
public static async Task <IMqttClientOptions> CreateMqttWebSocketClientOptionsAsync(this AmazonIoTDeviceGatewayClient client, string iotEndpointAddress, CancellationToken cancelToken = default)
{
if (client is null)
{
throw new ArgumentNullException(nameof(client));
}
var uriDetails = await client.CreateMqttWebSocketUriAsync(new Model.CreateMqttWebSocketUriRequest
{
EndpointAddress = iotEndpointAddress
}, cancelToken).ConfigureAwait(continueOnCapturedContext: false);
var optionsBuilder = new MqttClientOptionsBuilder();
optionsBuilder = optionsBuilder.WithTls();
optionsBuilder = optionsBuilder.WithWebSocketServer(uriDetails.RequestUri?.ToString());
IWebProxy iProxy = client.Config.GetWebProxy();
if (!(iProxy is null))
{
Uri proxyUri;
if (iProxy is Amazon.Runtime.Internal.Util.WebProxy awssdkProxy)
{
proxyUri = awssdkProxy.ProxyUri;
}
else
{
proxyUri = new Uri("http://" + client.Config.ProxyHost + ":" + client.Config.ProxyPort);
}
var iCreds = iProxy.Credentials ?? client.Config.ProxyCredentials;
var netCreds = iCreds?.GetCredential(proxyUri, default);
optionsBuilder = optionsBuilder.WithProxy(proxyUri.ToString(),
username: netCreds?.UserName, password: netCreds?.Password, domain: netCreds?.Domain,
bypassOnLocal: iProxy.IsBypassed(localhostUri)
);
}
var options = optionsBuilder.Build();
if (options.ChannelOptions is MqttClientWebSocketOptions webSocketOptions)
{
webSocketOptions.RequestHeaders = uriDetails.Headers;
}
return(options);
}
