sockmsg.py 文件源码

def getSendTo(addressType):
        def sendto(s, _data, _to):
            ancdata = []
            if type(_to) == addressType:
                addr = ipaddress.ip_address(_to.getLocalAddress()[0])
            else:
                addr = ipaddress.ip_address(s.getsockname()[0])
            if type(addr) == ipaddress.IPv4Address:
                _f = in_pktinfo()
                _f.ipi_spec_dst = in_addr.from_buffer_copy(addr.packed)
                ancdata = [(socket.SOL_IP, socket.IP_PKTINFO, memoryview(_f).tobytes())]
            elif s.family == socket.AF_INET6 and type(addr) == ipaddress.IPv6Address:
                _f = in6_pktinfo()
                _f.ipi6_addr = in6_addr.from_buffer_copy(addr.packed)
                ancdata = [(socket.SOL_IPV6, socket.IPV6_PKTINFO, memoryview(_f).tobytes())]
            return s.sendmsg([_data], ancdata, 0, _to)
        return sendto