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(Xojo Plugin) Manually Follow HTTP RedirectsDemonstrates how to manually follow redirects for an HTTP GET. Note: This example requires Chilkat v11.0.0 or greater.
Dim success As Boolean success = False // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Dim http As New Chilkat.Http // 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: http.FollowRedirects = False Dim resp As New Chilkat.HttpResponse success = http.HttpNoBody("GET","http://yandex.ru/",resp) If (success = False) Then System.DebugLog(http.LastErrorText) Return End If Dim status As Int32 status = resp.StatusCode System.DebugLog("HTTP Response Status: " + Str(status)) // The FinalRedirectUrl property will contain the redirect URL // If FollowRedirects was equal to True, then all of the // intermediate redirects (if any) would be followed until // there were no more redirects. However, because // FollowRedirects is not True, FinalRedirectUrl contains // the next redirect URL. Dim loopCount As Int32 loopCount = 0 While (status = 302) System.DebugLog("Redirect URL: " + http.FinalRedirectUrl) Dim nextUrl As String nextUrl = http.FinalRedirectUrl success = http.HttpNoBody("GET",nextUrl,resp) If (success = False) Then System.DebugLog(http.LastErrorText) Return End If status = resp.StatusCode System.DebugLog("HTTP Response Status: " + Str(status)) // For safety, prevent infinite loops by // keeping a loopCount and only allows following a max // of 10 redirects: loopCount = loopCount + 1 If (loopCount > 10) Then System.DebugLog("Too many redirects.") Return End If Wend |
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