# R-1250 live test only (2026-10-27): forward guest 9201's LAN :6881 (TCP and UDP) to its throwaway qBittorrent
# container, so DooPlex's qBittorrent can reach the seed. Started by hand, killed at teardown.
import socket, sys, threading
LAN, DST = sys.argv[1], (sys.argv[2], 6881)
def pipe(a, b):
    try:
        while True:
            d = a.recv(65536)
            if not d: break
            b.sendall(d)
    except OSError: pass
    finally:
        for s in (a, b):
            try: s.shutdown(socket.SHUT_RDWR)
            except OSError: pass
def udp():
    us = socket.socket(socket.AF_INET, socket.SOCK_DGRAM); us.bind((LAN, 6881)); peers = {}
    def back(client, s):
        while True:
            try: d, _ = s.recvfrom(65536)
            except OSError: return
            us.sendto(d, client)
    while True:
        d, client = us.recvfrom(65536)
        s = peers.get(client)
        if s is None:
            s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM); s.connect(DST); peers[client] = s
            threading.Thread(target=back, args=(client, s), daemon=True).start()
        s.send(d)
threading.Thread(target=udp, daemon=True).start()
ls = socket.socket(); ls.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1); ls.bind((LAN, 6881)); ls.listen(16)
while True:
    c, _ = ls.accept()
    u = socket.create_connection(DST)
    threading.Thread(target=pipe, args=(c, u), daemon=True).start()
    threading.Thread(target=pipe, args=(u, c), daemon=True).start()