Hi,
I have on my website a nice simple way to connect to gmail and pull down
emails with it. It worked. However, I've had an email from someone who
decided to implement it to say it no longer worked. URL is
http://www.all-the-johnsons.co.uk/csharp/email.html
Having looked over the code, it's down to the a TLSSecurity exception
when trying to authenticate on the server. I've adjusted the code as
follows, but I'm still getting the same error.
Code that failed
SslStream nstream;
public SslStream Connect(string username, string password)
{
string message;
string response;
TcpClient tcpClient = new TcpClient();
tcpClient.Connect("pop.gmail.com", 995);
nstream = new SslStream(tcpClient.GetStream());
nstream.AuthenticateAsClient("pop.gmail.com"); // fails
response = Response(nstream);
adjusted code
public static bool Validator (object sender, X509Certificate
certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
return true;
}
public SslStream Connect ()
{
string message = "", response = "";
ServicePointManager.ServerCertificateValidationCallback = Validator;
TcpClient tcpClient = new TcpClient ();
tcpClient.Connect ("pop.gmail.com", 995);
SslStream nstream = new SslStream (tcpClient.GetStream ());
nstream.AuthenticateAsClient ("pop.gmail.com"); // fail still
Any ideas on what I'm doing wrong?
The exact error is
System.IO.IOException: The authentication or decryption has failed -->
Mono.Security.Protocol.Tls.TlsException: Invalid certificate received
from the server
Paul
--
"Space," it says, "is big. Really big. You just won't believe how
vastly, hugely, mindbogglingly big it is. I mean, you may think it's a
long way down the road to the chemist's, but that's just peanuts to
space, listen..."
Hitch Hikers Guide to the Galaxy, a truly remarkable book!
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