python UDP 外网访问不响应

Question

我使用了外网映射，想从外网访问我电脑的8080端口，发包之后一直不响应。我想知道是从哪被拦住了。

#server.py

from socket import *
from time import ctime

HOST = 'localhost'
PORT = 8080
BUFSIZ = 1024
ADDR = (HOST, PORT)

udpSerSock = socket(AF_INET, SOCK_DGRAM)
udpSerSock.bind(ADDR)

while True:
    print('waiting for message...')
    data, addr = udpSerSock.recvfrom(BUFSIZ)
    content = '[%s] %s' % (bytes(ctime(), "utf-8"), data)
    udpSerSock.sendto(content.encode("utf-8"), addr)
    print('...received from and returned to:', addr,data)

udpSerSock.close()

#locate.py

from socket import *

HOST = '682acbc6.r8.cpolar.top'
PORT = 8080
BUFSIZ = 1024
ADDR = (HOST, PORT)

udpCliSock = socket(AF_INET, SOCK_DGRAM)

while True:
    data = input('> ')
    if not data:
        break

    udpCliSock.sendto(data.encode("utf-8"), ADDR)
    data, ADDR = udpCliSock.recvfrom(BUFSIZ)
    if not data:
        break
    print(data)

udpCliSock.close()

Answer 1

• 给你找了一篇非常好的博客，你可以看看是否有帮助，链接：使用 Python 来搭建 UDP 服务器