"too many automatic redirections were attempted" error message when using a httpWebRequest in .NET
I am attempting to request a page like "http://www.google.com/?q=random" using the webrequest class in vb.net. we are behind a firewall, so we have to authenticate our requests. I have gotten past the authentication part by adding my credentials. But once that works it seems to go into a redirecting loop.
Does anyone have an ideas, comments, suggetions why this is? Has anyone else experienced this problem?
Dim loHttp As HttpWebRequest = CType(WebRequest.Create(_url), HttpWebRequest)
loHttp.Timeout = 10000
loHttp.Method = "GET"
loHttp.KeepAlive = True
loHttp.AllowAutoRedirect = True
loHttp.PreAuthenticate = True
Dim _cred1 As NetworkCredential = ... //this is setup
//snip out this stuff
loHttp.Credentials = _cc
loWebResponse = loHttp.GetResponse()
Answer
Make sure you have a cookie container setup.
CookieContainer cookieContainer = new CookieContainer();
loHttp.CookieContainer = cookieContainer;
You are probably not saving cookies and getting caught in a redirect loop.