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(Unicode C++) Initialize an HTTP Request from a URL

Demonstrates how to initialize an HTTP request object from a URL.

Chilkat C/C++ Library Downloads

MS Visual C/C++

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#include <CkHttpRequestW.h>

void ChilkatSample(void)
    {
    CkHttpRequestW req;

    //  Loads the HTTP request object from a URL
    req.SetFromUrl(L"https://www.youtube.com/watch?v=fAZdTchQePc&t=45s");

    //  The verb will be "GET"
    wprintf(L"verb = %s\n",req.httpVerb());
    //  The path will be "/watch"
    wprintf(L"path = %s\n",req.path());

    //  The output of this loop will be
    //  0) v: fAZdTchQePc
    //  1) t: 45s
    int i;
    int numParams = req.get_NumParams();
    for (i = 0; i <= numParams - 1; i++) {
        wprintf(L"%d) %s: %s\n",i,req.getParamName(i),req.getParamValue(i));
    }

    //  View the request that would be sent if SynchronousRequest is called.
    //  The HTTP request will be a GET that looks like this:
    // 
    //      GET /watch?v=fAZdTchQePc&t=45s HTTP/1.1
    //      Host: domain
    // 
    //  Note: The HOST header will automatically get filled in with the actual domain when SynchronousRequest is called.

    wprintf(L"%s\n",req.generateRequestText());

    //  We can add additional params
    req.AddParam(L"artist",L"Richard Bona");
    req.AddParam(L"musicType",L"Jazz");
    req.AddParam(L"festival",L"Estival Jazz Lugano");
    req.AddParam(L"year",L"2008");

    //  Now examine the request that would be sent
    // 
    //      GET /watch?v=fAZdTchQePc&t=45s&artist=Richard%20Bona&musicType=Jazz&festival=Estival%20Jazz%20Lugano&year=2008 HTTP/1.1
    //      Host: domain
    // 
    wprintf(L"%s\n",req.generateRequestText());

    //  We can remove a parameter:
    req.RemoveParam(L"t");
    wprintf(L"%s\n",req.generateRequestText());

    //  What happens if we change the request from a GET to a POST?
    req.put_HttpVerb(L"POST");
    //  The request will now look like this:
    // 
    //     POST /watch HTTP/1.1
    //     Host: domain
    //     Content-Length: 93
    // 
    //     v=fAZdTchQePc&artist=Richard%20Bona&musicType=Jazz&festival=Estival%20Jazz%20Lugano&year=2008
    // 
    wprintf(L"%s\n",req.generateRequestText());

    //  What happens if we make it a multipart/form-data?
    req.put_ContentType(L"multipart/form-data");
    //  Now the POST looks like this:
    // 
    //     POST /watch HTTP/1.1
    //     Content-Type: multipart/form-data; boundary=------------020906020106050705030807
    //     Host: domain
    //     Content-Length: 545
    // 
    //     --------------020906020106050705030807
    //     Content-Disposition: form-data; name="v"
    // 
    //     fAZdTchQePc
    //     --------------020906020106050705030807
    //     Content-Disposition: form-data; name="artist"
    // 
    //     Richard Bona
    //     --------------020906020106050705030807
    //     Content-Disposition: form-data; name="musicType"
    // 
    //     Jazz
    //     --------------020906020106050705030807
    //     Content-Disposition: form-data; name="festival"
    // 
    //     Estival Jazz Lugano
    //     --------------020906020106050705030807
    //     Content-Disposition: form-data; name="year"
    // 
    //     2008
    //     --------------020906020106050705030807--

    wprintf(L"%s\n",req.generateRequestText());
    }

 

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