C++

Explaining the Rest ClearResponseBodyStream Method

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The ClearResponseBodyStream method would be needed if your applicaiton called SetResponseBodyStream to send the response to a stream for one request, but then wants to subsequently do something else. The application must call ClearResponseBodyStream to no longer send responses to the stream. C++

#include <CkRest.h>
#include <CkStream.h>
#include <CkBinData.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.

    CkRest rest;

    //  Connect to the web server
    bool bTls = true;
    int port = 443;
    bool bAutoReconnect = true;
    success = rest.Connect("www.chilkatsoft.com",port,bTls,bAutoReconnect);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    //  Setup a file stream for the download
    CkStream fileStream;
    fileStream.put_SinkFile("qa_output/starfish.jpg");

    //  Indicate that the call to FullRequestNoBody should send the response body
    //  to fileStream if the response status code is 200.
    //  If a non-success response status code is received, then nothing
    //  is streamed to the output file and the error response is returned by FullRequestNoBody.
    int expectedStatus = 200;
    rest.SetResponseBodyStream(expectedStatus,true,fileStream);

    const char *responseStr = rest.fullRequestNoBody("GET","/images/starfish.jpg");
    if (rest.get_LastMethodSuccess() == false) {
        //  Examine the request/response to see what happened.
        std::cout << "response status code = " << rest.get_ResponseStatusCode() << "\r\n";
        std::cout << "response status text = " << rest.responseStatusText() << "\r\n";
        std::cout << "response header: " << rest.responseHeader() << "\r\n";
        std::cout << "response body (if any): " << responseStr << "\r\n";
        std::cout << "---" << "\r\n";
        std::cout << "LastRequestStartLine: " << rest.lastRequestStartLine() << "\r\n";
        std::cout << "LastRequestHeader: " << rest.lastRequestHeader() << "\r\n";
        return;
    }

    std::cout << "downloaded starfish.jpg" << "\r\n";

    //  Clear the response body stream previously set in the call to SetResponseBodyStream.
    rest.ClearResponseBodyStream();

    //  Download something else, but this time send the response body to bd.
    CkBinData bd;
    success = rest.FullRequestNoBodyBd("GET","/images/penguins.jpg",bd);
    if (success == false) {
        //  Examine the request/response to see what happened.
        std::cout << "response status code = " << rest.get_ResponseStatusCode() << "\r\n";
        std::cout << "response status text = " << rest.responseStatusText() << "\r\n";
        std::cout << "response header: " << rest.responseHeader() << "\r\n";
        std::cout << "response body (if any): " << bd.getString("utf-8") << "\r\n";
        std::cout << "---" << "\r\n";
        std::cout << "LastRequestStartLine: " << rest.lastRequestStartLine() << "\r\n";
        std::cout << "LastRequestHeader: " << rest.lastRequestHeader() << "\r\n";
        return;
    }

    //  Save the contents of bd to a file.
    success = bd.WriteFile("qa_output/penguins.jpg");

    std::cout << "Success: " << success << "\r\n";
    }