public void Connect(string address, string identity, byte[] psk) { IntPtr tls, web, ssl; OpenSSL.OpenSSLCheck((tls = OpenSSL.TLSv1_2_method()) != IntPtr.Zero, "TLS_method"); OpenSSL.OpenSSLCheck((ctx = OpenSSL.SSL_CTX_new(tls)) != IntPtr.Zero, "SSL_CTX_new"); OpenSSL.OpenSSLCheck((web = OpenSSL.BIO_new_ssl_connect(ctx)) != IntPtr.Zero, "BIO_new_ssl_connect"); OpenSSL.OpenSSLCheck(OpenSSL.BIO_set_conn_hostname(web, address) == 1, "BIO_set_conn_hostname"); OpenSSL.BIO_get_ssl(web, out ssl); OpenSSL.OpenSSLCheck(ssl != IntPtr.Zero, "BIO_get_ssl"); OpenSSL.SSL_set_psk_client_callback(ssl, (ssl_, hint, identityOut, max_identity_len, pskOut, max_psk_len) => { byte[] identityBuf = Encoding.ASCII.GetBytes(identity); Marshal.Copy(identityBuf, 0, identityOut, (int)Math.Min(identityBuf.Length, max_identity_len)); Marshal.Copy(psk, 0, pskOut, (int)Math.Min(psk.Length, max_psk_len)); return((uint)psk.Length); }); OpenSSL.OpenSSLCheck(OpenSSL.BIO_do_handshake(web) == 1, "BIO_do_handshake"); base.Connect(web); }