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(Xojo Plugin) Initialize an HTTP Request from a URL

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

Chilkat Xojo Plugin Download

Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

Dim req As New Chilkat.HttpRequest

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

// The verb will be "GET"
System.DebugLog("verb = " + req.HttpVerb)
// The path will be "/watch"
System.DebugLog("path = " + req.Path)

// The output of this loop will be
// 0) v: fAZdTchQePc
// 1) t: 45s
Dim i As Int32
Dim numParams As Int32
numParams = req.NumParams
For i = 0 To numParams - 1
    System.DebugLog(Str(i) + ") " + req.GetParamName(i) + ": " + req.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.

System.DebugLog(req.GenerateRequestText())

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

// We can remove a parameter:
req.RemoveParam "t"
System.DebugLog(req.GenerateRequestText())

// What happens if we change the request from a GET to a POST?
req.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
// 
System.DebugLog(req.GenerateRequestText())

// What happens if we make it a multipart/form-data?
req.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--

System.DebugLog(req.GenerateRequestText())

 

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