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(PowerBuilder) PostXml vs. PostUrlEncoded

This example shows the differences in the HTTP requests sent by PostXml vs. PostUrlEncoded. With PostXml, the body of the request is the XML document itself. With PostUrlEncoded, the body of the request is composed of URL encoded params, as shown in the example below.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
integer li_Success
oleobject loo_Http
string ls_StrXml
oleobject loo_Resp
oleobject loo_Req
oleobject loo_SbUrl
string ls_StrResponse

//  This example requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

loo_Http = create oleobject
li_rc = loo_Http.ConnectToNewObject("Chilkat_9_5_0.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

ls_StrXml = "<pets><lizard>Pip</lizard><dog>Fido</dog></pets>"

//  We can log the exact HTTP requests/responses to a session log file.
loo_Http.SessionLogFilename = "qa_output/sessionLog.txt"

//  Send a POST w/ content-type of "application/xml"
loo_Http.SetRequestHeader("Content-Type","application/xml")

//  Note: This example is only interested in examining (via the session log)
//  the HTTP requests that are sent.  We're just sending the post to chilkatsoft.com
//  even though it's not an endpoint designed to handle the POST. We don't care about
//  the response, even if it's an error response status code..
loo_Resp = loo_Http.PostXml("https://www.chilkatsoft.com/",ls_StrXml,"utf-8")
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    return
end if

destroy loo_Resp

//  This is the HTTP request that is sent.
//  You'll notice the body of the request is the XML document itself.

//  	POST / HTTP/1.1
//  	Content-Type: application/xml
//  	Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
//  	Connection: keep-alive
//  	User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
//  	Accept-Language: en-us,en;q=0.5
//  	Accept-Encoding: gzip
//  	Host: www.chilkatsoft.com
//  	Content-Length: 48
// 
//  	<pets><lizard>Pip</lizard><dog>Fido</dog></pets>

//  --------
//  Now let's do a PostUrlEncoded...
//  The XML is passed in a query param that is contained in the body of the POST.
loo_Req = create oleobject
li_rc = loo_Req.ConnectToNewObject("Chilkat_9_5_0.HttpRequest")

loo_Req.AddParam("theXml",ls_StrXml)
loo_Resp = loo_Http.PostUrlEncoded("https://www.chilkatsoft.com/",loo_Req)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Req
    return
end if

destroy loo_Resp

//  This is the HTTP request that is sent.
//  You'll notice the body of the request is composed of URL encoded query params.

//  	POST / HTTP/1.1
//  	Content-Type: application/x-www-form-urlencoded
//  	Host: www.chilkatsoft.com
//  	Content-Length: 85
// 
//  	theXml=%3Cpets%3E%3Clizard%3EPip%3C%2Flizard%3E%3Cdog%3EFido%3C%2Fdog%3E%3C%2Fpets%3E
// 

//  --------
//  Let's try one more thing...
//  If the query params are not too large, they can be passed in the URL (which means the query params are passed
//  in the HTTP start line.  This is what happens when a URL w/ query params are pasted in a browser.
//  The HTTP verb is "GET" instead of "POST".

loo_SbUrl = create oleobject
li_rc = loo_SbUrl.ConnectToNewObject("Chilkat_9_5_0.StringBuilder")

loo_SbUrl.Append("https://www.chilkatsoft.com/?")
loo_SbUrl.Append(loo_Req.GetUrlEncodedParams())
Write-Debug "URL with query params: " + loo_SbUrl.GetAsString()
ls_StrResponse = loo_Http.QuickGetStr(loo_SbUrl.GetAsString())

//  The URL with query params is:  https://www.chilkatsoft.com/?theXml=%3Cpets%3E%3Clizard%3EPip%3C%2Flizard%3E%3Cdog%3EFido%3C%2Fdog%3E%3C%2Fpets%3E

//  The HTTP request looks like this.  You can see there is no request body, and the query params
//  are in the path part of the start line.

//  	GET /?theXml=%3Cpets%3E%3Clizard%3EPip%3C%2Flizard%3E%3Cdog%3EFido%3C%2Fdog%3E%3C%2Fpets%3E HTTP/1.1
//  	Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
//  	Connection: keep-alive
//  	User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0
//  	Accept-Language: en-us,en;q=0.5
//  	Accept-Encoding: gzip
//  	Host: www.chilkatsoft.com


destroy loo_Http
destroy loo_Req
destroy loo_SbUrl

 

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