C

Initialize an HTTP Request from a URL

See more HTTP Examples

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

#include <C_CkHttpRequest.h>

void ChilkatSample(void)
    {
    HCkHttpRequest req;
    int i;
    int numParams;

    req = CkHttpRequest_Create();

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

    //  The verb will be "GET"
    printf("verb = %s\n",CkHttpRequest_httpVerb(req));
    //  The path will be "/watch"
    printf("path = %s\n",CkHttpRequest_path(req));

    //  The output of this loop will be
    //  0) v: fAZdTchQePc
    //  1) t: 45s

    numParams = CkHttpRequest_getNumParams(req);
    for (i = 0; i <= numParams - 1; i++) {
        printf("%d) %s: %s\n",i,CkHttpRequest_getParamName(req,i),CkHttpRequest_getParamValue(req,i));
    }

    //  View the request that would be sent if HttpSReq 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 HttpSReq is called.

    printf("%s\n",CkHttpRequest_generateRequestText(req));

    //  We can add additional params
    CkHttpRequest_AddParam(req,"artist","Richard Bona");
    CkHttpRequest_AddParam(req,"musicType","Jazz");
    CkHttpRequest_AddParam(req,"festival","Estival Jazz Lugano");
    CkHttpRequest_AddParam(req,"year","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
    //  
    printf("%s\n",CkHttpRequest_generateRequestText(req));

    //  We can remove a parameter:
    CkHttpRequest_RemoveParam(req,"t");
    printf("%s\n",CkHttpRequest_generateRequestText(req));

    //  What happens if we change the request from a GET to a POST?
    CkHttpRequest_putHttpVerb(req,"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
    //  
    printf("%s\n",CkHttpRequest_generateRequestText(req));

    //  What happens if we make it a multipart/form-data?
    CkHttpRequest_putContentType(req,"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--

    printf("%s\n",CkHttpRequest_generateRequestText(req));


    CkHttpRequest_Dispose(req);

    }