udp客户端,过时删除

测试代码:

import socket
import threading
import datetime

class A:
    def __init__(self, ip='127.0.0.1', port=9999, interval=10):
        self.addr = ip, port
        self.sock = socket.socket(type=socket.SOCK_DGRAM)
        self.interval = interval
        self.clients = {}

    def start(self):
        self.sock.bind(self.addr)

        threading.Thread(target=self.recv, name='recv').start()

    def recv(self):
        while True:
            data, clientinfo = self.sock.recvfrom(1024)
            print(data, clientinfo)
            current = datetime.datetime.now().timestamp()
            self.clients[clientinfo] = current
            pops = set()
            for i, stamp in self.clients.items():
                if current - stamp > self.interval:
                    pops.add(clientinfo)
                else:
                    self.sock.sendto(data, i)
            for x in pops:
                self.clients.pop(x)

a = A()
a.start()