(Unicode C++) Set Container Metadata

Azure Storage Blob Service REST API: Sample code to set the user-defined metadata of a container.

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#include <CkRestW.h>
#include <CkAuthAzureStorageW.h>

void ChilkatSample(void)
    {
    // Azure Blob Service Example: Set Container User-Defined Metadata
    // See also: https://msdn.microsoft.com/en-us/library/azure/dd179362.aspx

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkRestW rest;

    // Connect to the Azure Storage Blob Service
    bool bTls = true;
    int port = 443;
    bool bAutoReconnect = true;
    // In this example, the storage account name is "chilkat".
    bool success = rest.Connect(L"chilkat.blob.core.windows.net",port,bTls,bAutoReconnect);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // Provide Azure Cloud credentials for the REST call.
    CkAuthAzureStorageW azAuth;
    azAuth.put_AccessKey(L"AZURE_ACCESS_KEY");
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    azAuth.put_Account(L"chilkat");
    azAuth.put_Scheme(L"SharedKey");
    azAuth.put_Service(L"Blob");
    // This causes the "x-ms-version: 2020-08-04" header to be automatically added.
    azAuth.put_XMsVersion(L"2020-08-04");
    success = rest.SetAuthAzureStorage(azAuth);

    // Note: The application does not need to explicitly set the following
    // headers: x-ms-date, Authorization.  These headers
    // are automatically set by Chilkat.

    // Add each name-value pair of metadata to associate with the container.
    // To remove all metadata from the container, simply don't add any x-ms-meta- headers.
    success = rest.AddHeader(L"x-ms-meta-Category",L"Images");
    success = rest.AddHeader(L"x-ms-meta-Resolution",L"High");

    // The expected success response is a 200 response status code with no response body.
    // In this example, we are setting the metadata of the container named "mycontainer".
    const wchar_t *responseStr = rest.fullRequestNoBody(L"PUT",L"/mycontainer?restype=container&comp=metadata");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // When successful, the Azure Storage service will respond with a 200 response status code,
    // with no response body.

    if (rest.get_ResponseStatusCode() != 200) {
        // Examine the request/response to see what happened.
        wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"response status text = %s\n",rest.responseStatusText());
        wprintf(L"response header: %s\n",rest.responseHeader());
        wprintf(L"response body (if any): %s\n",responseStr);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",rest.lastRequestStartLine());
        wprintf(L"LastRequestHeader: %s\n",rest.lastRequestHeader());
        return;
    }

    wprintf(L"Success.\n");
    }