Unicode C

Azure Storage: Upload Binary Data to Block Blob

See more Azure Cloud Storage Examples

Sample code to upload binary bytes to a block blob in Azure Cloud Storage. This creates the 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..

Unicode C

#include <C_CkRestW.h>
#include <C_CkAuthAzureStorageW.h>
#include <C_CkByteData.h>
#include <C_CkFileAccessW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRestW rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkAuthAzureStorageW azAuth;
    HCkByteData binaryData;
    HCkFileAccessW fac;
    const wchar_t *responseStr;

    success = FALSE;

    //  Azure Blob Service Example: Upload binary bytes to a block blob.
    //  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.

    rest = CkRestW_Create();

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

    //  Provide Azure Cloud credentials for the REST call.
    azAuth = CkAuthAzureStorageW_Create();
    CkAuthAzureStorageW_putAccessKey(azAuth,L"AZURE_ACCESS_KEY");
    //  The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    CkAuthAzureStorageW_putAccount(azAuth,L"chilkat");
    CkAuthAzureStorageW_putScheme(azAuth,L"SharedKey");
    CkAuthAzureStorageW_putService(azAuth,L"Blob");
    //  This causes the "x-ms-version: 2021-08-06" header to be automatically added.
    CkAuthAzureStorageW_putXMsVersion(azAuth,L"2021-08-06");
    success = CkRestW_SetAuthAzureStorage(rest,azAuth);

    //  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.

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

    //  For this example, we'll just load a JPG file into memory..
    binaryData = CkByteData_Create();
    fac = CkFileAccessW_Create();
    success = CkFileAccessW_ReadEntireFile(fac,L"qa_data/jpg/starfish.jpg",binaryData);

    //  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..
    responseStr = CkRestW_fullRequestBinary(rest,L"PUT",L"/mycontainer/starfish.jpg",binaryData);
    if (CkRestW_getLastMethodSuccess(rest) != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkByteData_Dispose(binaryData);
        CkFileAccessW_Dispose(fac);
        return;
    }

    //  When successful, the Azure Storage service will respond with a 201 response status code,
    //  with no response body.

    if (CkRestW_getResponseStatusCode(rest) != 201) {
        //  Examine the request/response to see what happened.
        wprintf(L"response status code = %d\n",CkRestW_getResponseStatusCode(rest));
        wprintf(L"response status text = %s\n",CkRestW_responseStatusText(rest));
        wprintf(L"response header: %s\n",CkRestW_responseHeader(rest));
        wprintf(L"response body (if any): %s\n",responseStr);
        wprintf(L"---\n");
        wprintf(L"LastRequestStartLine: %s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"LastRequestHeader: %s\n",CkRestW_lastRequestHeader(rest));
        CkRestW_Dispose(rest);
        CkAuthAzureStorageW_Dispose(azAuth);
        CkByteData_Dispose(binaryData);
        CkFileAccessW_Dispose(fac);
        return;
    }

    wprintf(L"Success.\n");


    CkRestW_Dispose(rest);
    CkAuthAzureStorageW_Dispose(azAuth);
    CkByteData_Dispose(binaryData);
    CkFileAccessW_Dispose(fac);

    }