Creating a websocket connection to Azure IoT Hub device streams

iothub-device-streams-create-socket.cs

public async Task<ClientWebSocket> CreateAsync(
    Uri url, string authorizationToken, 
    CancellationToken cancellationToken)
{
    var webSocketClient = new ClientWebSocket();
    webSocketClient
        .Options
        .SetRequestHeader(
            "Authorization", 
            $"Bearer {authorizationToken}");

    await webSocketClient.ConnectAsync(
        url, 
        cancellationToken).ConfigureAwait(false);

    return webSocketClient;
}