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.

C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkRest rest;
    BOOL bTls;
    int port;
    BOOL bAutoReconnect;
    HCkStringBuilder sbToken;
    HCkBinData binData;
    HCkStringBuilder sbResponse;

    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.

    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;
    }

    // ----------------------------------------------------------------------------------------------
    // 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
    sbToken = CkStringBuilder_Create();
    success = CkStringBuilder_LoadFile(sbToken,"qa_data/tokens/azureStorageAccountSas.txt","utf-8");
    if (success != TRUE) {
        printf("Failed to load SAS token.\n");
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        return;
    }

    // Add the Shared Access Signature query params for authorization.
    CkRest_AddQueryParams(rest,CkStringBuilder_getAsString(sbToken));

    // IMPORTANT: Make sure to set the x-ms-blob-type header:
    success = CkRest_AddHeader(rest,"x-ms-blob-type","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 = CkRest_AddHeader(rest,"x-ms-date","NOW");

    // For this example, we'll just load a JPG file into memory..
    binData = CkBinData_Create();
    success = CkBinData_LoadFile(binData,"qa_data/jpg/starfish.jpg");
    if (success != TRUE) {
        printf("Failed to load JPG file.\n");
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        CkBinData_Dispose(binData);
        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..
    sbResponse = CkStringBuilder_Create();
    success = CkRest_FullRequestBd(rest,"PUT","/mycontainer/starfish.jpg",binData,sbResponse);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        CkBinData_Dispose(binData);
        CkStringBuilder_Dispose(sbResponse);
        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(sbResponse));
        printf("---\n");
        printf("LastRequestStartLine: %s\n",CkRest_lastRequestStartLine(rest));
        printf("LastRequestHeader: %s\n",CkRest_lastRequestHeader(rest));
        printf("Failed.\n");
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        CkBinData_Dispose(binData);
        CkStringBuilder_Dispose(sbResponse);
        return;
    }

    printf("Success.\n");


    CkRest_Dispose(rest);
    CkStringBuilder_Dispose(sbToken);
    CkBinData_Dispose(binData);
    CkStringBuilder_Dispose(sbResponse);

    }