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(C#) Use an Azure Service SAS

Shows how to use an Azure Service SAS. (In this case, it is an SAS for a blob.)

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// Azure Blob Service Example: Upload binary bytes to a block blob.
// This uses a Service SAS for Authorization.

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

Chilkat.Rest rest = new Chilkat.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("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect);
if (success != true) {
    Debug.WriteLine(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 Service SAS
Chilkat.StringBuilder sbToken = new Chilkat.StringBuilder();
success = sbToken.LoadFile("qa_data/tokens/azureStorageServiceSas.txt","utf-8");
if (success != true) {
    Debug.WriteLine("Failed to load SAS token.");
    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("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 = rest.AddHeader("x-ms-date","NOW");

// For this example, we'll just load a JPG file into memory..
Chilkat.BinData binData = new Chilkat.BinData();
success = binData.LoadFile("qa_data/jpg/starfish.jpg");
if (success != true) {
    Debug.WriteLine("Failed to load JPG file.");
    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..
Chilkat.StringBuilder sbResponse = new Chilkat.StringBuilder();
success = rest.FullRequestBd("PUT","/mycontainer/starfish.jpg",binData,sbResponse);
if (success != true) {
    Debug.WriteLine(rest.LastErrorText);
    return;
}

// When successful, the Azure Storage service will respond with a 201 response status code,
// with no response body.
if (rest.ResponseStatusCode != 201) {
    // Examine the request/response to see what happened.
    Debug.WriteLine("response status code = " + Convert.ToString(rest.ResponseStatusCode));
    Debug.WriteLine("response status text = " + rest.ResponseStatusText);
    Debug.WriteLine("response header: " + rest.ResponseHeader);
    Debug.WriteLine("response body (if any): " + sbResponse.GetAsString());
    Debug.WriteLine("---");
    Debug.WriteLine("LastRequestStartLine: " + rest.LastRequestStartLine);
    Debug.WriteLine("LastRequestHeader: " + rest.LastRequestHeader);
    Debug.WriteLine("Failed.");
    return;
}

Debug.WriteLine("Success.");

 

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