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test51.py
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+#!/usr/bin/env python3
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+# -*- coding: utf-8 -*-
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+
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+'练习UDP网络协议'
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+__author__ = 'sergiojune'
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+import socket
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+# 此文件用于当服务器
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+# 创建socket
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+s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # 第二个参数为指定udp协议
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+# 绑定端口，不需要监听
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+s.bind(('127.0.0.1', 9999))
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+print('await connect')
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+while True:
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+ data, addr = s.recvfrom(1024) # 这个直接返回客户端的ip和请求信息
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+ print('connect form %s:%s' % addr)
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+ # 发送数据回客户端
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+ s.sendto(b'hello %s' % data, addr) # 第二个参数为发送到的ip
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