coap.py 文件源码

def enableMulticast(self):
        while not self.running:
            pass
        mreq = struct.pack("4sl", socket.inet_aton(self.multicast_ip), socket.INADDR_ANY)
        self.socket.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, mreq)
        info("CoAP Server binded on coap://%s:%s/ (MULTICAST)" % (self.multicast_ip, self.port))