Method test_bio_handshake

Lib/test/test_ssl.py:2156–2190

(self)

        return ret

    def test_bio_handshake(self):
        sock = socket.socket(socket.AF_INET)
        self.addCleanup(sock.close)
        sock.connect(self.server_addr)
        incoming = ssl.MemoryBIO()
        outgoing = ssl.MemoryBIO()
        ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_CLIENT)
        self.assertTrue(ctx.check_hostname)
        self.assertEqual(ctx.verify_mode, ssl.CERT_REQUIRED)
        ctx.load_verify_locations(SIGNING_CA)
        sslobj = ctx.wrap_bio(incoming, outgoing, False,
                              SIGNED_CERTFILE_HOSTNAME)
        self.assertIs(sslobj._sslobj.owner, sslobj)
        self.assertIsNone(sslobj.cipher())
        self.assertIsNone(sslobj.version())
        self.assertIsNone(sslobj.shared_ciphers())
        self.assertRaises(ValueError, sslobj.getpeercert)
        # tls-unique is not defined for TLSv1.3
        # https://datatracker.ietf.org/doc/html/rfc8446#appendix-C.5
        if 'tls-unique' in ssl.CHANNEL_BINDING_TYPES and sslobj.version() != "TLSv1.3":
            self.assertIsNone(sslobj.get_channel_binding('tls-unique'))
        self.ssl_io_loop(sock, incoming, outgoing, sslobj.do_handshake)
        self.assertTrue(sslobj.cipher())
        self.assertIsNone(sslobj.shared_ciphers())
        self.assertIsNotNone(sslobj.version())
        self.assertTrue(sslobj.getpeercert())
        if 'tls-unique' in ssl.CHANNEL_BINDING_TYPES and sslobj.version() != "TLSv1.3":
            self.assertTrue(sslobj.get_channel_binding('tls-unique'))
        try:
            self.ssl_io_loop(sock, incoming, outgoing, sslobj.unwrap)
        except ssl.SSLSyscallError:
            # If the server shuts down the TCP connection without sending a
            # secure shutdown message, this is reported as SSL_ERROR_SYSCALL
            pass
        self.assertRaises(ssl.SSLError, sslobj.write, b'foo')

    def test_bio_read_write_data(self):
        sock = socket.socket(socket.AF_INET)