(Lianja) Initialize an HTTP Request from a URL

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

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loReq = createobject("CkHttpRequest")

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

// The verb will be "GET"
? "verb = " + loReq.HttpVerb
// The path will be "/watch"
? "path = " + loReq.Path

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

lnNumParams = loReq.NumParams
for i = 0 to lnNumParams - 1
    ? str(i) + ") " + loReq.GetParamName(i) + ": " + loReq.GetParamValue(i)
next

// 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.

? loReq.GenerateRequestText()

// We can add additional params
loReq.AddParam("artist","Richard Bona")
loReq.AddParam("musicType","Jazz")
loReq.AddParam("festival","Estival Jazz Lugano")
loReq.AddParam("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
// 
? loReq.GenerateRequestText()

// We can remove a parameter:
loReq.RemoveParam("t")
? loReq.GenerateRequestText()

// What happens if we change the request from a GET to a POST?
loReq.HttpVerb = "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
// 
? loReq.GenerateRequestText()

// What happens if we make it a multipart/form-data?
loReq.ContentType = "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--

? loReq.GenerateRequestText()


release loReq