Python script resembling ncat that allows you to send invisible characters using their unicode values

pysock

#!/usr/bin/env python3

import sys
import time
import socket
import _thread
import readline

if len(sys.argv) < 3:
	print('usage: pysock [options] server port')
	quit()

# Go through options

if "-u" in sys.argv:
	s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
else:
	s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

server = sys.argv[-2]
port = int(sys.argv[-1])

s.connect((server, port))

def listener(sock):
	global keepgoing
	while 1:
		res = sock.recv(1024)
		if res == b'':
			keepgoing = False
			break
		res = str(res)[2:-1]
		print(res)

_thread.start_new_thread(listener, (s,))

keepgoing = True
try:
	while 1:
		tosend = input()
		tosend = eval("b'" + tosend.replace("'", "\\'") + "'")
		s.send(tosend)
except KeyboardInterrupt:
	print()
	quit()