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(MFC) S3 - Working with Buckets in a Region

Demonstrates how to work with S3 buckets located in a particular region.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkRest.h>
#include <CkAuthAws.h>
#include <CkBinData.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    //  When usig the REST class to access an S3 bucket that has been created in a particular region,
    //  there are three important things to remember:
    // 
    //  1) Connect to the domain that includes the region.  For example, instead of connecting to
    //     "s3.amazonaws.com", connect to "s3.eu-central-1.amazonaws.com" if your bucket is in the EU Frankfurt region.
    //     See http://docs.aws.amazon.com/general/latest/gr/rande.html#s3_region   for a list of S3 region domains (endpoints)
    // 
    //  2) Set the AuthAws.Region property equal to the region, such as "eu-central-1".
    // 
    //  3) Include the region in request's Host header.
    // 

    //  This example will upload to a bucket in the eu-central-1 region.
    // 
    CkRest rest;

    //  Connect to the Amazon AWS REST server.
    bool bTls = true;
    int port = 443;
    bool bAutoReconnect = true;
    bool success = rest.Connect("s3.eu-central-1.amazonaws.com",port,bTls,bAutoReconnect);

    //  Provide AWS credentials for the REST call.
    CkAuthAws authAws;
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("s3");
    authAws.put_Region("eu-central-1");
    success = rest.SetAuthAws(authAws);

    //  Set the bucket name via the HOST header.
    //  In this case, the bucket name is "chilkateufrankfurt" (which was created in the eu-central-1 region)
    rest.put_Host("chilkateufrankfurt.s3.eu-central-1.amazonaws.com");

    CkBinData fileData;
    success = fileData.LoadFile("qa_data/jpg/starfish.jpg");

    //  Upload the file to Amazon S3.
    CkStringBuilder responseBody;
    success = rest.FullRequestBd("PUT","/starfish.jpg",fileData,responseBody);
    if (success != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    //  Did we get a 200 response indicating success?
    int statusCode = rest.get_ResponseStatusCode();
    if (statusCode != 200) {
        strOut.append("Error response: ");
        strOut.append(responseBody.getAsString());
        strOut.append("\r\n");
        strOut.append("Status code: ");
        strOut.appendInt(statusCode);
        strOut.append(", Status text: ");
        strOut.append(rest.responseStatusText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    strOut.append("File successfully uploaded.");
    strOut.append("\r\n");


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }

 

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