Python socket实例代码

在Python中，socket模块用于创建网络套接字，实现客户端和服务器之间的通信。这里是一个简单的TCP服务器和客户端的例子：

**服务器端（server.py）**:

import socket

# 创建一个socket对象
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 获取本地主机名或IP地址
host = 'localhost'
port = 9999

# 绑定端口
server_socket.bind((host, port))

# 设置最大连接数
server_socket.listen(5)

while True:
    # 建立新连接
    client_socket, addr = server_socket.accept()
    print(f"Accepted connection from {addr}:{addr}")

    # 接收数据
    request = client_socket.recv(1024)
    print(f"Received: {request.decode()}")

    # 回应数据
    response = "Hello from the server!"
    client_socket.send(response.encode())

    # 关闭连接
    client_socket.close()

**客户端（client.py）**:

import socket

# 创建一个socket对象
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接到服务器
host = 'localhost'
port = 9999
client_socket.connect((host, port))

# 发送数据
message = "Hello, Server!"
client_socket.send(message.encode())
print("Sent:", message)

# 接收响应
response = client_socket.recv(1024)
print("Received:", response.decode())

# 关闭连接
client_socket.close()

运行`server.py`作为服务端启动监听，然后运行`client.py`作为客户端进行连接。