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# Copyright (c) 2023 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "cimple" project.
# For details, see https://github.com/egor-tensin/cimple.
# Distributed under the MIT License.
from contextlib import closing
import random
import socket
def port_is_open(host, port):
with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
return sock.connect_ex((host, port)) == 0
def random_unused_port():
while True:
port = random.randint(20000, 40000)
if port_is_open('127.0.0.1', port):
continue
return port
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