用python实现socket通信

以下是一个简单的 Python Socket 通信例子:

服务端代码(server.py):

import socket

# 创建一个 TCP/IP socket
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 绑定 socket 到本地IP与端口
server_address = ('localhost', 9999)
print('Starting up on %s port %s' % server_address)
server_socket.bind(server_address)

# 开始监听进来的连接
server_socket.listen(1)

while True:
    # 等待一个新连接
    print('Waiting for a connection...')
    client_socket, client_address = server_socket.accept()
    print('Connection from', client_address)

    # 收到消息并发送回去
    while True:
        data = client_socket.recv(1024)
        print('Received:', data.decode())
        if data:
            client_socket.sendall(data)
        else:
            print('No more data from', client_address)
            break

    # 清理连接
    client_socket.close()

客户端代码(client.py):

import socket

# 创建一个 TCP/IP socket
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接到服务端的地址和端口号
server_address = ('localhost', 9999)
print('Connecting to %s port %s' % server_address)
client_socket.connect(server_address)

# 发送消息
message = 'Hello, world!'
client_socket.sendall(message.encode())

# 接收服务端返回的消息
data = client_socket.recv(1024)
print('Received:', data.decode())

# 关闭连接
client_socket.close()

运行 server.py 启动服务端，然后运行 client.py 启动客户端，就可以在客户端和服务端之间进行通信了。