我必须＆＃34;解开＆＃34;套接字后绑定免费套接字？

Question

我是否必须明确释放/取消绑定套接字才能重用它？我正在考虑使用close()，但我看到了一些选项，例如tcp.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)。我必须使用它还是close()足够？

有没有办法确保端口对于新绑定是免费的？

TorPorts = {}
def port_setup(workers):
    for worker in range(workers):
        for i in range(2):
            tcp = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            tcp.bind(('', 0))
            port = tcp.getsockname()[1]
            print("{0} port {1}, tcp {2}".format(i,port,tcp))
            if not TorPorts.has_key(worker):
                TorPorts[worker] = {0:{},1:{}}
            TorPorts[worker][i] = {"port":port,"tcp":tcp}
    # do some programing

    # close ports I s this enough?
    for thread,ports in TorPorts[0].items():
        tcp_port = ports["tcp"]
        tcp_port.close()

Answer 1

最好使用tcp_port.close() socket.SO_REUSEADDR在某些情况下可能会失败。如果发生这种情况，则在WAIT_TIME完成之前，您无法重新绑定到同一端口。