C

Azure Storage: Upload Binary Data to Block Blob using BinData

See more Azure Cloud Storage Examples

Sample code to upload binary bytes (contained in a Chilkat BinData object) 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..

C

#include <C_CkRest.h>
#include <C_CkAuthAzureStorage.h>
#include <C_CkBinData.h>
#include <C_CkStringBuilder.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkAuthAzureStorage azAuth;
    HCkBinData bd;
    HCkStringBuilder sbResponseBody;

    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 = CkRest_Create();

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

    // Provide Azure Cloud credentials for the REST call.
    azAuth = CkAuthAzureStorage_Create();
    CkAuthAzureStorage_putAccessKey(azAuth,"AZURE_ACCESS_KEY");
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    CkAuthAzureStorage_putAccount(azAuth,"chilkat");
    CkAuthAzureStorage_putScheme(azAuth,"SharedKey");
    CkAuthAzureStorage_putService(azAuth,"Blob");
    // This causes the "x-ms-version: 2021-08-06" header to be automatically added.
    CkAuthAzureStorage_putXMsVersion(azAuth,"2021-08-06");
    success = CkRest_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 = CkRest_AddHeader(rest,"x-ms-blob-type","BlockBlob");

    // For this example, we'll just load a JPG file into memory..
    bd = CkBinData_Create();
    success = CkBinData_LoadFile(bd,"qa_data/jpg/starfish.jpg");
    if (success == FALSE) {
        printf("Failed to load the file to be uploaded.\n");
        CkRest_Dispose(rest);
        CkAuthAzureStorage_Dispose(azAuth);
        CkBinData_Dispose(bd);
        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..
    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestBd(rest,"PUT","/mycontainer/starfish.jpg",bd,sbResponseBody);
    if (success == FALSE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkAuthAzureStorage_Dispose(azAuth);
        CkBinData_Dispose(bd);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

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

    if (CkRest_getResponseStatusCode(rest) != 201) {
        // Examine the request/response to see what happened.
        printf("response status code = %d\n",CkRest_getResponseStatusCode(rest));
        printf("response status text = %s\n",CkRest_responseStatusText(rest));
        printf("response header: %s\n",CkRest_responseHeader(rest));
        printf("response body (if any): %s\n",CkStringBuilder_getAsString(sbResponseBody));
        printf("---\n");
        printf("LastRequestStartLine: %s\n",CkRest_lastRequestStartLine(rest));
        printf("LastRequestHeader: %s\n",CkRest_lastRequestHeader(rest));
        CkRest_Dispose(rest);
        CkAuthAzureStorage_Dispose(azAuth);
        CkBinData_Dispose(bd);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    printf("Success.\n");


    CkRest_Dispose(rest);
    CkAuthAzureStorage_Dispose(azAuth);
    CkBinData_Dispose(bd);
    CkStringBuilder_Dispose(sbResponseBody);

    }