icleversoft

 int port = 2195;
       String hostname = "gateway.sandbox.push.apple.com";

       //load certificate
       string certificatePath = @"cert.p12";
       string certificatePassword = "";
       X509Certificate2 clientCertificate = new X509Certificate2(certificatePath, certificatePassword);
       X509Certificate2Collection certificatesCollection = new X509Certificate2Collection(clientCertificate);

       TcpClient client = new TcpClient(hostname, port);