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A TCP hole puncher
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#!/usr/bin/python3 | |
# tcphole.py | |
# By George Hilliard ("thirtythreeforty") | |
# A simple TCP hole puncher for a firewall accepting only ESTABLISHED,RELATED packets | |
# This currently binds to the localhost address, although that's easy to fix by changing | |
# the bind() calls. | |
# This is based on the theory found at http://www.bford.info/pub/net/p2pnat/index.html#sec-tcp. | |
# You may use this software under the terms of the Creative Commons CC-0 license. | |
# That is, it is public domain. However, I'd appreciate it if you'd mention my name. | |
import sys | |
import socket | |
import _thread as thread | |
def client(): | |
c = socket.socket() | |
c.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) | |
c.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1) | |
c.bind(('', int(sys.argv[3]))) | |
while(c.connect_ex((sys.argv[1], int(sys.argv[2])))): | |
pass | |
print("client connected!") | |
while True: | |
pass | |
def server(): | |
c = socket.socket() | |
c.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) | |
c.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEPORT, 1) | |
c.bind(('', int(sys.argv[3]))) | |
c.listen(5) | |
c.accept() | |
print("server connected!") | |
while True: | |
pass | |
def main(): | |
thread.start_new_thread(client, ()) | |
thread.start_new_thread(server, ()) | |
while True: | |
pass | |
if __name__ == '__main__': | |
main() |
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