Unicode C++
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 Unicode C++ Downloads

Unicode C++
#include <CkRestW.h>
#include <CkAuthAwsW.h>
#include <CkXmlW.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    CkRestW 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;
    success = rest.Connect(L"sqs.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);

    // Provide AWS credentials for the REST call.
    CkAuthAwsW authAws;
    authAws.put_AccessKey(L"AWS_ACCESS_KEY");
    authAws.put_SecretKey(L"AWS_SECRET_KEY");
    // the region should match our URL above..
    authAws.put_Region(L"us-west-2");
    authAws.put_ServiceName(L"sqs");

    rest.SetAuthAws(authAws);

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

    // Use the actual path part of your SQS queue URL here:
    const wchar_t *responseXml = rest.fullRequestNoBody(L"GET",L"/123456789123/chilkatTest");
    if (rest.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",rest.lastErrorText());
        return;
    }

    // A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        wprintf(L"response status code = %d\n",rest.get_ResponseStatusCode());
        wprintf(L"response status text = %s\n",rest.responseStatusText());
        wprintf(L"response header: %s\n",rest.responseHeader());
        wprintf(L"response body: %s\n",responseXml);
        return;
    }

    // Examine the successful XML response.
    CkXmlW xml;
    xml.LoadXml(responseXml);
    wprintf(L"%s\n",xml.getXml());
    wprintf(L"----\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:
    wprintf(L"Body: %s\n",xml.chilkatPath(L"ReceiveMessageResult|Message|Body|*"));
    wprintf(L"MessageId: %s\n",xml.chilkatPath(L"ReceiveMessageResult|Message|MessageId|*"));

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

    CkXmlW *rec = xml.FindNextRecord(L"Name",L"SenderId");
    wprintf(L"SenderId: %s\n",rec->getChildContent(L"Value"));
    delete rec;

    rec = xml.FindNextRecord(L"Name",L"ApproximateFirstReceiveTimestamp");
    wprintf(L"ApproximateFirstReceiveTimestamp: %s\n",rec->getChildContent(L"Value"));
    delete rec;

    rec = xml.FindNextRecord(L"Name",L"ApproximateReceiveCount");
    wprintf(L"ApproximateReceiveCount: %s\n",rec->getChildContent(L"Value"));
    delete rec;

    rec = xml.FindNextRecord(L"Name",L"SentTimestamp");
    wprintf(L"SentTimestamp: %s\n",rec->getChildContent(L"Value"));
    delete rec;

    xml.GetRoot2();
    }