Unicode C++

Upload using Azure Storage Account Shared Access Signature (SAS) Authorization

See more Azure Cloud Storage Examples

Sample code to upload binary bytes to a block blob in Azure Cloud Storage using an Azure Storage Account Shared Access Signature (SAS) Authorization. This creates a block blob, or replaces an existing block blob.

Note: The maximum size of a block blob created by uploading in a single step is 64MB. For larger files, the upload must be broken up into blocks. There is another Chilkat example for that..

Note: This example requires Chilkat v9.5.0.65 or later.

Unicode C++

#include <CkRestW.h>
#include <CkStringBuilderW.h>
#include <CkBinDataW.h>

void ChilkatSample(void)
    {
    bool success = false;

    //  Note: This example requires Chilkat v9.5.0.65 or greater.

    //  Azure Blob Service Example: Upload binary bytes to a block blob.
    //  This uses a Shared Access Signature (SAS) for Authorization.
    //  This creates a new block blob or replaces an existing one in its entirety.
    //  See also: https://msdn.microsoft.com/en-us/library/azure/dd179451.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".
    success = rest.Connect(L"chilkat.blob.core.windows.net",port,bTls,bAutoReconnect);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  ----------------------------------------------------------------------------------------------
    //  The code above this comment could be placed inside a function/subroutine within the application
    //  because the connection does not need to be made for every request.  Once the connection is made
    //  the app may send many requests..
    //  ----------------------------------------------------------------------------------------------

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

    //  Let's load a previously computed Azure Storage Account SAS token and use it.
    //  See How to Create an Azure Storage Account Shared Access Signature
    CkStringBuilderW sbToken;
    success = sbToken.LoadFile(L"qa_data/tokens/azureStorageAccountSas.txt",L"utf-8");
    if (success != true) {
        wprintf(L"Failed to load SAS token.\n");
        return;
    }

    //  Add the Shared Access Signature query params for authorization.
    rest.AddQueryParams(sbToken.getAsString());

    //  IMPORTANT: Make sure to set the x-ms-blob-type header:
    success = rest.AddHeader(L"x-ms-blob-type",L"BlockBlob");

    //  IMPORTANT: Make sure to add the x-ms-date header.
    //  When the header name is "x-ms-date", Chilkat will recognize the keyword "NOW" 
    //  and will substitute the current system date/time formatted as required by Microsoft.
    success = rest.AddHeader(L"x-ms-date",L"NOW");

    //  For this example, we'll just load a JPG file into memory..
    CkBinDataW binData;
    success = binData.LoadFile(L"qa_data/jpg/starfish.jpg");
    if (success != true) {
        wprintf(L"Failed to load JPG file.\n");
        return;
    }

    //  Note: The maximum size of a block blob created by uploading in a single step is 64MB.  
    //  For larger files, the upload must be broken up into blocks.  There is another Chilkat example for that..
    CkStringBuilderW sbResponse;
    success = rest.FullRequestBd(L"PUT",L"/mycontainer/starfish.jpg",binData,sbResponse);
    if (success != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    //  When successful, the Azure Storage service will respond with a 201 response status code,
    //  with no response body.
    if (rest.get_ResponseStatusCode() != 201) {
        //  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",sbResponse.getAsString());
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",rest.lastRequestStartLine());
        wprintf(L"LastRequestHeader: %s\n",rest.lastRequestHeader());
        wprintf(L"Failed.\n");
        return;
    }

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