nmb.py 文件源码

def _setup_connection(self, dstaddr, timeout=None):
        port = randint(10000, 60000)
        af, socktype, proto, _canonname, _sa = socket.getaddrinfo(dstaddr, port, socket.AF_INET, socket.SOCK_DGRAM)[0]
        s = socket.socket(af, socktype, proto)
        has_bind = 1
        for _i in range(0, 10):
            # We try to bind to a port for 10 tries
            try:
                s.bind((INADDR_ANY, randint(10000, 60000)))
                s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
                has_bind = 1
            except socket.error:
                pass
        if not has_bind:
            raise NetBIOSError, ('Cannot bind to a good UDP port', ERRCLASS_OS, errno.EAGAIN)
        self.__sock = s