[dev-crypto-csharp] PskTlsClient, System.IO.IOException on Connect

[Ivan Zanolla]

Hi,

At the moment the server side is not implemented yet, there is a stub on my
Ubuntu Linux machine only for tests purpose as the following:

openssl s_server -accept 9999 -cipher ECDHE-PSK-CHACHA20-POLY1305
-nocert -psk 6161616161 -psk_identity admin


There are some problems on the client side (using Bouncy Castle 1.8.6.1),
I'm stuck in a rut because everything seems implemented as the following
(copied from your tests in the source code)

class Program
    {

        private static readonly SecureRandom _secureRandom = new SecureRandom();


        internal static TlsClientProtocol OpenTlsConnection(string
hostname, int port, Org.BouncyCastle.Crypto.Tls.TlsClient client)
        {
            var tcp = new TcpClient(hostname, port);


            var protocol = new TlsClientProtocol(tcp.GetStream(),
_secureRandom);

            protocol.Connect(client);


            return protocol;
        }

        static void Main(string[] args)
        {

            var hostname = "192.168.132.160";
            var port = 9999;

            var psk_identity = "admin";


            // hardcoded psk
            var psk = new byte[] { 0x61, 0x61, 0x61, 0x61, 0x61 };

            var pskIdentity = new BasicTlsPskIdentity(psk_identity, psk);



            var client = new PskTlsClient(null, pskIdentity);




            var protocol = OpenTlsConnection(hostname, port, client);


            // Tryng to send something
            var req = Encoding.UTF8.GetBytes("GET / HTTP/1.1\r\n\r\n");

            var tlsStream = protocol.Stream;
            tlsStream.Write(req, 0, req.Length);
            tlsStream.Flush();

            var reader = new StreamReader(tlsStream);

            string line;
            while ((line = reader.ReadLine()) != null)
            {
                Console.WriteLine(">>> " + line);
            }

            protocol.Close();


        }
    }

I get this exception every time:

System.IO.IOException: 'Unable to read data from the transport connection:
A connection attempt failed because the connected party did not properly
respond after a period of time, or established connection failed because
connected host has failed to respond.'

In addition, this code on my Linux Machine works

openssl s_client -connect 192.168.132.160:9999 -psk 6161616161
-psk_identity admin -tls1_2

Did I miss something on my client side? Can anyone help me? I'm going mad.

Thanks

-- 
Ivan Zanolla
http://about.me/ivanzanolla