(MFC) SQS Receive Message

Retrieves one or more messages from an Amazon SQS queue, with a maximum limit of 10 messages, from the specified queue.

See SQS ReceiveMessage or detailed information.

Chilkat C/C++ Library Downloads

MS Visual C/C++ Libs

See Also: Using MFC CString in Chilkat

#include <CkRest.h>
#include <CkAuthAws.h>
#include <CkXml.h>

void ChilkatSample(void)
    {
    CkString strOut;

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

    CkRest rest;

    // Connect to the Amazon AWS REST server.
    // such as https://sqs.us-west-2.amazonaws.com/
    bool bTls = true;
    int port = 443;
    bool bAutoReconnect = true;
    bool success = rest.Connect("sqs.us-west-2.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");
    // the region should match our URL above..
    authAws.put_Region("us-west-2");
    authAws.put_ServiceName("sqs");

    rest.SetAuthAws(authAws);

    rest.AddQueryParam("Action","ReceiveMessage");
    rest.AddQueryParam("MaxNumberOfMessages","5");
    rest.AddQueryParam("VisibilityTimeout","15");
    rest.AddQueryParam("AttributeName","All");
    rest.AddQueryParam("MessageAttributeName","All");

    // Use the actual path part of your SQS queue URL here:
    const char *responseXml = rest.fullRequestNoBody("GET","/123456789123/chilkatTest");
    if (rest.get_LastMethodSuccess() != true) {
        strOut.append(rest.lastErrorText());
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        strOut.append("response status code = ");
        strOut.appendInt(rest.get_ResponseStatusCode());
        strOut.append("\r\n");
        strOut.append("response status text = ");
        strOut.append(rest.responseStatusText());
        strOut.append("\r\n");
        strOut.append("response header: ");
        strOut.append(rest.responseHeader());
        strOut.append("\r\n");
        strOut.append("response body: ");
        strOut.append(responseXml);
        strOut.append("\r\n");
        SetDlgItemText(IDC_EDIT1,strOut.getUnicode());
        return;
    }

    // Examine the successful XML response.
    CkXml xml;
    xml.LoadXml(responseXml);
    strOut.append(xml.getXml());
    strOut.append("\r\n");
    strOut.append("----");
    strOut.append("\r\n");

    // A successful response looks like this:
    // <?xml version="1.0" encoding="utf-8" ?>
    // <ReceiveMessageResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
    //     <ReceiveMessageResult>
    //         <Message>
    //             <Body>this is a test</Body>
    //             <MD5OfBody>54b0c58c7ce9f2a8b551351102ee0938</MD5OfBody>
    //             <ReceiptHandle>AQEBMyLof...UbKBTvHtEg==</ReceiptHandle>
    //             <Attribute>
    //                 <Name>SenderId</Name>
    //                 <Value>957491831129</Value>
    //             </Attribute>
    //             <Attribute>
    //                 <Name>ApproximateFirstReceiveTimestamp</Name>
    //                 <Value>1475013283557</Value>
    //             </Attribute>
    //             <Attribute>
    //                 <Name>ApproximateReceiveCount</Name>
    //                 <Value>4</Value>
    //             </Attribute>
    //             <Attribute>
    //                 <Name>SentTimestamp</Name>
    //                 <Value>1475013283557</Value>
    //             </Attribute>
    //             <MessageId>52882c65-5e21-4450-9024-93a3b01e61d3</MessageId>
    //             <MD5OfMessageAttributes>2ff68603f4239272bd03f543254ed040</MD5OfMessageAttributes>
    //         </Message>
    //     </ReceiveMessageResult>
    //     <ResponseMetadata>
    //         <RequestId>05ba5c92-80ee-5f87-be76-0cf67b7475d6</RequestId>
    //     </ResponseMetadata>
    // </ReceiveMessageResponse>

    // Get some values from the XML:
    strOut.append("Body: ");
    strOut.append(xml.chilkatPath("ReceiveMessageResult|Message|Body|*"));
    strOut.append("\r\n");
    strOut.append("MessageId: ");
    strOut.append(xml.chilkatPath("ReceiveMessageResult|Message|MessageId|*"));
    strOut.append("\r\n");

    const char *unused = xml.chilkatPath("ReceiveMessageResult|Message[0]|Attribute|$");

    CkXml *rec = xml.FindNextRecord("Name","SenderId");
    strOut.append("SenderId: ");
    strOut.append(rec->getChildContent("Value"));
    strOut.append("\r\n");
    delete rec;

    rec = xml.FindNextRecord("Name","ApproximateFirstReceiveTimestamp");
    strOut.append("ApproximateFirstReceiveTimestamp: ");
    strOut.append(rec->getChildContent("Value"));
    strOut.append("\r\n");
    delete rec;

    rec = xml.FindNextRecord("Name","ApproximateReceiveCount");
    strOut.append("ApproximateReceiveCount: ");
    strOut.append(rec->getChildContent("Value"));
    strOut.append("\r\n");
    delete rec;

    rec = xml.FindNextRecord("Name","SentTimestamp");
    strOut.append("SentTimestamp: ");
    strOut.append(rec->getChildContent("Value"));
    strOut.append("\r\n");
    delete rec;

    xml.GetRoot2();


    SetDlgItemText(IDC_EDIT1,strOut.getUnicode());

    }