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(PowerBuilder) Manually Follow HTTP RedirectsDemonstrates how to manually follow redirects for an HTTP GET. Note: This example requires Chilkat v11.0.0 or greater.
integer li_rc integer li_Success oleobject loo_Http oleobject loo_Resp integer li_Status integer li_LoopCount string ls_NextUrl li_Success = 0 // 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.Http") if li_rc < 0 then destroy loo_Http MessageBox("Error","Connecting to COM object failed") return end if // The FollowRedirects property controls whether redirects // are automatically followed. The default behavior is to // automatically follow redirects. // Explicitly set FollowRedirects so that redirects are NOT automatically taken: loo_Http.FollowRedirects = 0 loo_Resp = create oleobject li_rc = loo_Resp.ConnectToNewObject("Chilkat.HttpResponse") li_Success = loo_Http.HttpNoBody("GET","http://yandex.ru/",loo_Resp) if li_Success = 0 then Write-Debug loo_Http.LastErrorText destroy loo_Http destroy loo_Resp return end if li_Status = loo_Resp.StatusCode Write-Debug "HTTP Response Status: " + string(li_Status) // The FinalRedirectUrl property will contain the redirect URL // If FollowRedirects was equal to 1, then all of the // intermediate redirects (if any) would be followed until // there were no more redirects. However, because // FollowRedirects is not 1, FinalRedirectUrl contains // the next redirect URL. li_LoopCount = 0 do while (li_Status = 302) Write-Debug "Redirect URL: " + loo_Http.FinalRedirectUrl ls_NextUrl = loo_Http.FinalRedirectUrl li_Success = loo_Http.HttpNoBody("GET",ls_NextUrl,loo_Resp) if li_Success = 0 then Write-Debug loo_Http.LastErrorText destroy loo_Http destroy loo_Resp return end if li_Status = loo_Resp.StatusCode Write-Debug "HTTP Response Status: " + string(li_Status) // For safety, prevent infinite loops by // keeping a loopCount and only allows following a max // of 10 redirects: li_LoopCount = li_LoopCount + 1 if li_LoopCount > 10 then Write-Debug "Too many redirects." destroy loo_Http destroy loo_Resp return end if loop destroy loo_Http destroy loo_Resp |
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