一、UDP服务端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket# 基于网络的数据报协议 UDP
server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
# 绑定这个端口，接收这个端口的消息，参数是元组，括号不能少
server.bind(('192.168.1.110', 5000))while True:# 1024 缓冲区。recvfrom可以得到发送方的消息和地址，recv只能得到消息msg, addr = server.recvfrom(1024)print(msg, addr)# 发送数据到指定的地址server.sendto(msg.upper(), addr)

二、UDP客户端

#!/usr/bin/python
# -*- coding: UTF-8 -*-
import socket  # 网络通信 TCP，UDP# SOCK_DGRAM表示UDP，SOCKET_STREAM表示TCP
client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)while True:msg = input('>>: ').strip()if not msg:continueclient.sendto(msg.encode('utf-8'), ('192.168.1.110', 5000))back_msg, addr = client.recvfrom(1024)print(back_msg.decode('utf-8'), addr)if back_msg.decode('utf-8') == 'CLOSE':break
client.close()

三、TCP服务端

#!/usr/bin/python
# -*- coding: UTF-8 -*-import socketip_port = ('127.0.0.1', 5001)# 创建套接字
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 绑定服务地址
server.bind(ip_port)
# 监听连接请求
server.listen(5)
print('启动socket服务，等待客户端连接...')
# 等待连接，此处自动阻塞
conn, address = server.accept()
while True:# 接收信息client_data = conn.recv(1024).decode()if client_data == "exit":conn.close()exit("通信结束")print("来自%s的客户端向你发来信息：%s" % (address, client_data))# 回馈信息给客户端conn.sendall('服务器已经收到你的信息'.encode())

四、TCP客户端

#!/usr/bin/python
# -*- coding: UTF-8 -*-import socketip_port = ('127.0.0.1', 5001)client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)client.connect(ip_port)while True:msg = input("请输入要发送的信息： ").strip()if not msg:continueclient.sendall(msg.encode())if msg == "exit":  # 如果输入的是‘exit’，表示断开连接print("结束通信")breakserver_reply = client.recv(1024).decode()print(server_reply)client.close()