fauxmo.py 文件源码

def init_socket(self):
        ok = True
        self.ip = '239.255.255.250'
        self.port = 1900
        try:
            #This is needed to join a multicast group
            self.mreq = struct.pack("4sl",socket.inet_aton(self.ip),socket.INADDR_ANY)

            #Set up server socket
            self.ssock = socket.socket(socket.AF_INET,socket.SOCK_DGRAM,socket.IPPROTO_UDP)
            self.ssock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)

            try:
                self.ssock.bind(('',self.port))
            except Exception, e:
                dbg("WARNING: Failed to bind %s:%d: %s" , (self.ip,self.port,e))
                ok = False

            try:
                self.ssock.setsockopt(socket.IPPROTO_IP,socket.IP_ADD_MEMBERSHIP,self.mreq)
            except Exception, e:
                dbg('WARNING: Failed to join multicast group:',e)
                ok = False

        except Exception, e:
            dbg("Failed to initialize UPnP sockets:",e)
            return False
        if ok:
            dbg("Listening for UPnP broadcasts")