Python中TCP协议的探索与实例解析

import socket

# 创建套接字对象
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 获取本地主机名和端口号
host = socket.gethostname()
port = 12345

# 绑定地址和端口
server_socket.bind((host, port))

# 开始监听传入连接
server_socket.listen(5)

print('等待客户端连接...')
while True:
    # 建立客户端连接
    client_socket, addr = server_socket.accept()
    print('连接地址:', addr)

    # 向客户端发送消息
    message = '欢迎访问服务器！'
    client_socket.send(message.encode('utf-8'))

    # 关闭连接
    client_socket.close()

import socket

# 创建套接字对象
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 获取本地主机名和端口号
host = socket.gethostname()
port = 12345

# 连接服务器
client_socket.connect((host, port))

# 接收消息并打印
message = client_socket.recv(1024)
print(message.decode('utf-8'))

# 关闭连接
client_socket.close()

# 服务端代码
import socket

def server():
    server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    host = socket.gethostname()
    port = 12345
    server_socket.bind((host, port))
    server_socket.listen(5)

    print('等待客户端连接...')
    while True:
        client_socket, addr = server_socket.accept()
        print('连接地址:', addr)

        while True:
            message = client_socket.recv(1024).decode('utf-8')
            if not message:
                break
            print(f"客户端消息：{message}")

            # 服务端回复消息
            reply = input('回复客户端：')
            client_socket.send(reply.encode('utf-8'))

        client_socket.close()

if __name__ == '__main__':
    server()

# 客户端代码
import socket

def client():
    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    host = socket.gethostname()
    port = 12345
    client_socket.connect((host, port))

    while True:
        message = input('发送消息：')
        client_socket.send(message.encode('utf-8'))

        # 接收服务端消息
        server_message = client_socket.recv(1024).decode('utf-8')
        print(f"服务端消息：{server_message}")

    client_socket.close()

if __name__ == '__main__':
    client()