httpwebrequest giving false results

Question

 if (IsURLValid(url))
            {
                Uri requestUri = new Uri(url);
                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(requestUri);
                httpWebRequest.Proxy = WebRequest.GetSystemWebProxy();
                httpWebRequest.Timeout = 3000;
                httpWebRequest.Method = "HEAD";
                //httpWebRequest.AllowAutoRedirect = true;
                httpWebRequest.UserAgent = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:64.0) Gecko/20100101 Firefox/64.0";
                httpWebRequest.Accept = "*/*";
                httpWebRequest.ServicePoint.Expect100Continue = false;
                httpWebRequest.AllowAutoRedirect = true;
                httpWebRequest.MaximumAutomaticRedirections = 4;
                HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                httpWebResponse.Close();
                MessageBox.Show(httpWebResponse.ResponseUri.ToString());
                if ((httpWebResponse.StatusCode == HttpStatusCode.OK) || (httpWebResponse.StatusCode == HttpStatusCode.Redirect))
                {

                    return true;
                }
                else
                {
                    return false;
                }
            }
            return false;
        }
        catch (WebException)
        {
            return false;
        }
    }

The above code is working good however its giving some false results. The below url is live however the result we are getting is invalid.

https://forum.unity.com/threads/clean-way-to-talk-to-external-application-c-to-ros-c-node.418849/

I have tried online checker also, those checkers also giving same error. https://httpstatus.io/ check the unity url in httpstatus its giving error. ANy one have idea why it is like that?

What kind of result are you expecting? Also, I think the `else` block is quite unnecessary. — bolkay, Jan 07 '19 at 18:29
The url is valid but still code its returning false. I want to get exactly valid urls. — nav, Jan 07 '19 at 18:35
How about not calling response.Close() unitl you've actually evaluated the response? — bolkay, Jan 07 '19 at 18:40

hce · Answer 1 · 2019-01-07T20:24:32.923

0

You could try this:

httpWebRequest.CookieContainer = new CookieContainer();

Otherwise your (HttpWebResponse)httpWebRequest.GetResponse(); will throw an exception and you will get the return false; from your catch statement.

See this for more info

edited Jan 07 '19 at 20:24

answered Jan 07 '19 at 20:16

hce

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httpwebrequest giving false results

https://forum.unity.com/threads/clean-way-to-talk-to-external-application-c-to-ros-c-node.418849/

1 Answers1