无需使用Azure客户端SDK即可连接到IoT中心 [英] Connect to IoT Hub without using the Azure Client SDK

问题描述

我想不使用客户端SDK连接到Azure Iot Hub. 在 https://azure .microsoft.com/nb-no/blog/upload-files-from-devices-with-azure-iot-hub/ 有关于如何执行此操作的文档 1)获取用于存储的SAS URI
2)将完成的上传通知IoT中心

I want to connect to the Azure Iot Hub not using the Client SDK. On https://azure.microsoft.com/nb-no/blog/upload-files-from-devices-with-azure-iot-hub/ there are documentation on how to do this by 1) get the SAS URI for storage
2) to notify the IoT hub of a completed upload

但是在此之前，您需要使用DeviceConnectionString连接到IoT中心.有没有人举过例子/提示如何完成和上传文件?

But before this can be done you need to connect to the IoT Hub using the DeviceConnectionString. Does anyone have an example / hints of how this and uploading a file can be done?

推荐答案

您可以关注"

You can follow "File uploads with IoT Hub" and do it through four steps:

1. 将Azure存储帐户与IoT中心相关联.在这里，我们通过Azure门户进行此操作.在您的物联网中心中找到文件上传"，然后选择您的存储帐户的存储容器.
2. 通过将POST发送到IoT中心来初始化文件上传，如下所示:

并且IoT中心返回以下数据:

And IoT Hub returns the following data:

1. 设备使用Azure存储SDK将文件上传到存储.您可以关注本教程.代码如下:

    // Parse the connection string and return a reference to the storage account.
    CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
        CloudConfigurationManager.GetSetting("StorageConnectionString"));

    // Create the blob client.
    CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

    // Retrieve reference to a previously created container.
    CloudBlobContainer container = blobClient.GetContainerReference("azureportaldeploy");

    // Retrieve reference to a blob named "myblob".
    CloudBlockBlob blockBlob = container.GetBlockBlobReference("device1/testfileupload2");

    // Create or overwrite the "myblob" blob with contents from a local file.
    using (var fileStream = System.IO.File.OpenRead(@"{your file path}\testfileupload2.txt"))
    {
        blockBlob.UploadFromStream(fileStream);
    }

上传完成后，设备将向IoT中心发送POST，如下所示:

Once the upload is completed, the device sends a POST to the IoT hub like this:

此外，您可以

Besides, you can download the blob to check the file uploaded. And check the file upload notification using the following code:

    private async static Task ReceiveFileUploadNotificationAsync()
    {
        var notificationReceiver = serviceClient.GetFileNotificationReceiver();

        Console.WriteLine("\nReceiving file upload notification from service");
        while (true)
        {
            var fileUploadNotification = await notificationReceiver.ReceiveAsync();
            if (fileUploadNotification == null) continue;

            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine("Received file upload noticiation: {0}", string.Join(", ", fileUploadNotification.BlobName));
            Console.ResetColor();

            await notificationReceiver.CompleteAsync(fileUploadNotification);
        }
    }

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