PowerBuilder

HTTP HEAD Request

See more HTTP Examples

Sends an HTTP HEAD request and gets the response.

Note: The response to an HTTP HEAD request is always just the response header. The reponse body is always 0 length (thus the reason it's called a "HEAD" request..)

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Http
oleobject loo_Resp
integer li_NumHeaderFields
integer i

li_Success = 0

// This example assumes 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.Http")
if li_rc < 0 then
    destroy loo_Http
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// If the URL uses "https://", then the connection will be TLS.
// Otherwise it will be TCP.

// A failure is when we don't get any response.  It could be a timeout, an inability to connect, etc.
// For example, a "404 Not Found" response is still a response, and thus deemed success in terms of the API..

loo_Resp = create oleobject
li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse")

li_Success = loo_Http.HttpNoBody("HEAD","https://example-code.com/",loo_Resp)
if li_Success = 0 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Http
    destroy loo_Resp
    return
end if

// Examine the response.
Write-Debug "Status Code = " + string(loo_Resp.StatusCode)
Write-Debug "Status Line = " + loo_Resp.StatusLine
Write-Debug "Status Text = " + loo_Resp.StatusText
Write-Debug "Full Response Header:"
Write-Debug loo_Resp.Header
Write-Debug "----"
li_NumHeaderFields = loo_Resp.NumHeaderFields
Write-Debug "Num Header Fields: " + string(li_NumHeaderFields)

for i = 0 to li_NumHeaderFields - 1
    Write-Debug loo_Resp.GetHeaderName(i) + ": " + loo_Resp.GetHeaderValue(i)
next


destroy loo_Http
destroy loo_Resp