linux怎么查看++udp

netstat -u

ss -u

lsof -i UDP

import socket

server_address = ('localhost', 10000)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

try:
    print('starting up on {} port {}'.format(*server_address))
    while True:
        data, address = sock.recvfrom(4096)
        print('received {!r}'.format(data))
        sock.sendto(data, address)
finally:
    print('closing socket')
    sock.close()

import socket

server_address = ('localhost', 10000)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

try:
    message = b'this is the message.  it will be sent.'
    print('sending {!r}'.format(message))
    sent = sock.sendto(message, server_address)

    print('waiting to receive')
    data, server = sock.recvfrom(4096)
    print('received {!r}'.format(data))
finally:
    print('closing socket')
    sock.close()