python 循环收发 tcp 服务端与客户端脚本

以下是一个简单的 Python TCP 服务端与客户端脚本，可以循环收发消息：

TCP 服务端脚本：

import socket

SERVER_HOST = '0.0.0.0'
SERVER_PORT = 8080

def handle_client(client_socket):
    while True:
        # 接收客户端消息
        request = client_socket.recv(1024)
        if not request:
            break
        print(f'Received message: {request.decode()}')

        # 发送响应消息
        response = f'You sent me: {request.decode()}'.encode()
        client_socket.send(response)

    # 关闭客户端连接
    client_socket.close()

# 创建 TCP 套接字
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

# 绑定服务器地址和端口
server_socket.bind((SERVER_HOST, SERVER_PORT))

# 监听来自客户端的连接
server_socket.listen(1)
print(f'Server listening on {SERVER_HOST}:{SERVER_PORT}')

while True:
    # 等待客户端连接
    client_socket, client_address = server_socket.accept()
    print(f'Client connected from {client_address[0]}:{client_address[1]}')

    # 处理客户端请求
    handle_client(client_socket)

TCP 客户端脚本：

import socket

SERVER_HOST = '127.0.0.1'
SERVER_PORT = 8080

# 创建 TCP 套接字
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接服务器
client_socket.connect((SERVER_HOST, SERVER_PORT))
print(f'Connected to {SERVER_HOST}:{SERVER_PORT}')

while True:
    # 发送消息
    message = input('> ')
    client_socket.send(message.encode())

    # 接收响应消息
    response = client_socket.recv(1024)
    print(f'Received response: {response.decode()}')

使用时，先运行服务端脚本，再运行客户端脚本，即可在客户端输入消息并发送，服务端将会收到并打印消息，并返回响应消息给客户端。客户端将会收到响应消息并打印。