How to use the ssh-audit.SSH.Protocol function in ssh-audit

def send_init(self, s):
		# type: (SSH.Socket) -> None
		r = random.SystemRandom()
		self.__x = r.randrange(2, self.__q)
		self.__e = pow(self.__g, self.__x, self.__p)
		s.write_byte(SSH.Protocol.MSG_KEXDH_INIT)
		s.write_mpint2(self.__e)
		s.send_packet()

if err is None:
		packet_type, payload = s.read_packet(sshv)
		if packet_type < 0:
			try:
				payload_txt = payload.decode('utf-8') if payload else u'empty'
			except UnicodeDecodeError:
				payload_txt = u'"{0}"'.format(repr(payload).lstrip('b')[1:-1])
			if payload_txt == u'Protocol major versions differ.':
				if sshv == 2 and aconf.ssh1:
					audit(aconf, 1)
					return
			err = '[exception] error reading packet ({0})'.format(payload_txt)
		else:
			err_pair = None
			if sshv == 1 and packet_type != SSH.Protocol.SMSG_PUBLIC_KEY:
				err_pair = ('SMSG_PUBLIC_KEY', SSH.Protocol.SMSG_PUBLIC_KEY)
			elif sshv == 2 and packet_type != SSH.Protocol.MSG_KEXINIT:
				err_pair = ('MSG_KEXINIT', SSH.Protocol.MSG_KEXINIT)
			if err_pair is not None:
				fmt = '[exception] did not receive {0} ({1}), ' + \
				      'instead received unknown message ({2})'
				err = fmt.format(err_pair[0], err_pair[1], packet_type)
	if err:
		output(banner, header)
		out.fail(err)
		sys.exit(1)
	if sshv == 1:
		pkm = SSH1.PublicKeyMessage.parse(payload)
		output(banner, header, pkm=pkm)
	elif sshv == 2:
		kex = SSH2.Kex.parse(payload)
		output(banner, header, kex=kex)

if packet_type < 0:
			try:
				payload_txt = payload.decode('utf-8') if payload else u'empty'
			except UnicodeDecodeError:
				payload_txt = u'"{0}"'.format(repr(payload).lstrip('b')[1:-1])
			if payload_txt == u'Protocol major versions differ.':
				if sshv == 2 and aconf.ssh1:
					audit(aconf, 1)
					return
			err = '[exception] error reading packet ({0})'.format(payload_txt)
		else:
			err_pair = None
			if sshv == 1 and packet_type != SSH.Protocol.SMSG_PUBLIC_KEY:
				err_pair = ('SMSG_PUBLIC_KEY', SSH.Protocol.SMSG_PUBLIC_KEY)
			elif sshv == 2 and packet_type != SSH.Protocol.MSG_KEXINIT:
				err_pair = ('MSG_KEXINIT', SSH.Protocol.MSG_KEXINIT)
			if err_pair is not None:
				fmt = '[exception] did not receive {0} ({1}), ' + \
				      'instead received unknown message ({2})'
				err = fmt.format(err_pair[0], err_pair[1], packet_type)
	if err:
		output(banner, header)
		out.fail(err)
		sys.exit(1)
	if sshv == 1:
		pkm = SSH1.PublicKeyMessage.parse(payload)
		output(banner, header, pkm=pkm)
	elif sshv == 2:
		kex = SSH2.Kex.parse(payload)
		output(banner, header, kex=kex)