How to get host/port from DefaultWebProxy?

[McoreD]

Hi All,

I understand HttpWebRequest.DefaultWebProxy returns you default port/host in a computer that it is connected to, if such proxy exists.

       /// <summary>
        /// Returns a WebProxy object based on active ProxyInfo and if Proxy is enabled, returns default system proxy otherwise
        /// </summary>
        public static IWebProxy GetProxySettings()
        {
            if (Program.conf.ProxyEnabled)
            {
                ProxyInfo acc = Program.conf.ProxyActive;
                if (acc != null)
                {
                    NetworkCredential cred = new NetworkCredential(acc.UserName, acc.Password);
                    return new WebProxy(acc.GetAddress(), true, null, cred);
                }
                else
                {
                    return HttpWebRequest.DefaultWebProxy;
                }
            }
            return null;
        }

However, I have no clue how to get the host/port information and display it. I know in Quick Watch I can see this information.

Thanks in advance,
McoreD

[tlhintoq]

Your tiny thumbnail is unreadable. Can you post a bigger photo.

If you can see the value in a variable of QuickWatch, then that is the variable you want to display.

[McoreD]

Thank you tlhintoq, fixed image. :)

[JamieHowarth0]

Hi McoreD,

I think the Address property has a sub-property which allows you to break apart the address into protocol, address, IP and port (if I remember rightly). IntelliSense and QuickWatching HttpWebRequest.DefaultProxy.Address should help you isolate it out - or you could always do string math and get all chars between a ":" and a "/" (or end of string if "/" isn't found).

Hope this helps.

codegecko

[McoreD]

It would've been much simpler if there was a System.Net.HttpWebRequest.DefaultWebProxy.Address but unfortunately I can't seem to access this codegecko. :(

[JamieHowarth0]

That's a bummar - the Intellisense above seems to indicate it's available from your QuickWatch/breakpoint. I'm not too familiar with WebProxy parts in .NET but I'll give this my best shot (I've just looked a few things up on MSDN so hopefully this'll work).

WebProxy x = CType(HttpWebRequest.DefaultWebProxy, WebProxy);
int portno = Convert.ToInt32(x.Address.Uri.Port);
 

Note: trying to cast using (WebProxy)HttpWebRequest.DefaultWebProxy won't work for some strange reason even though both classes derive from IWebProxy. This page on MSDN has some example code.
If it doesn't work, try using a declared instance of HttpWebRequest rather than the static property.

Anyway, a) hope this works and b) hope it helps.

codegecko

[McoreD]

Hi, unfortunately casting is possible in code, however fails during runtime. I have settled with the following try/catch workaround:

            IWebProxy proxy = Uploader.ProxySettings;
            if (proxy != null)
            {
                try
                {
                    string testUrl = "http://google.com";
                    Client.Proxy = new HttpProxyClient(proxy.GetProxy(new Uri(testUrl)).Host, proxy.GetProxy(new Uri(testUrl)).Port);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.ToString());
                }
            }