Python 使用TCP\UDP协议创建一个聊天室

server端代码：

python 复制代码

#encoding=utf-8
# 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()

Client端代码：

python 复制代码

# 客户端代码
import socket

def client():
    client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    host='xxxxx'
    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()

运行后的结果：

Client：

Server端：

host是主机的Device 名字

服务器与客户端建立 TCP 通信连接的交互过程：

UDP Server：

python 复制代码

# UDP服务器端代码
import socket

# 创建套接字
server_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 绑定地址和端口
server_address = ('localhost', 12345)
server_socket.bind(server_address)

# 接收数据
data, client_address = server_socket.recvfrom(1024)
print(f"Received: {data.decode()} from {client_address}")

# 关闭套接字
server_socket.close()

UDP Client：

python 复制代码

# UDP客户端代码
import socket

# 创建套接字
client_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

# 发送数据
message = "Hello, server!"
server_address = ('localhost', 12345)
client_socket.sendto(message.encode(), server_address)

# 关闭套接字
client_socket.close()

运行结果：

参考：Python网络编程实战指南：TCP协议探索与编程实例解析_python tcp-CSDN博客

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