upnp.py 文件源码

def run(self):
        """Run the server."""
        # Listen for UDP port 1900 packets sent to SSDP multicast address
        ssdp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        ssdp_socket.setblocking(False)

        # Required for receiving multicast
        ssdp_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

        ssdp_socket.setsockopt(
            socket.SOL_IP,
            socket.IP_MULTICAST_IF,
            socket.inet_aton(self.host_ip_addr))

        ssdp_socket.setsockopt(
            socket.SOL_IP,
            socket.IP_ADD_MEMBERSHIP,
            socket.inet_aton("239.255.255.250") +
            socket.inet_aton(self.host_ip_addr))

        ssdp_socket.bind(("239.255.255.250", 1900))

        while True:
            if self._interrupted:
                clean_socket_close(ssdp_socket)
                return

            try:
                read, _, _ = select.select(
                    [self._interrupted_read_pipe, ssdp_socket], [],
                    [ssdp_socket])

                if self._interrupted_read_pipe in read:
                    # Implies self._interrupted is True
                    clean_socket_close(ssdp_socket)
                    return
                elif ssdp_socket in read:
                    data, addr = ssdp_socket.recvfrom(1024)
                else:
                    continue
            except socket.error as ex:
                if self._interrupted:
                    clean_socket_close(ssdp_socket)
                    return

                _LOGGER.error("UPNP Responder socket exception occured: %s",
                              ex.__str__)

            if "M-SEARCH" in data.decode('utf-8'):
                # SSDP M-SEARCH method received, respond to it with our info
                resp_socket = socket.socket(
                    socket.AF_INET, socket.SOCK_DGRAM)

                resp_socket.sendto(self.upnp_response, addr)
                resp_socket.close()