socketserver-old.py 文件源码

def bind_and_listen(hostport):
    if isinstance(hostport, str):
        host, port = hostport.split(':')
        hostport = (host, int(port))
    serversock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # set close-on-exec
    if hasattr(fcntl, 'FD_CLOEXEC'):
        old = fcntl.fcntl(serversock.fileno(), fcntl.F_GETFD)
        fcntl.fcntl(serversock.fileno(), fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
    # allow the address to be re-used in a reasonable amount of time
    if os.name == 'posix' and sys.platform != 'cygwin':
        serversock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

    serversock.bind(hostport)
    serversock.listen(5)
    return serversock