Python 使用TCP\UDP协议创建一个聊天室

server端代码：

#encoding=utf-8
# 服务端代码
import socketdef server():server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)host = socket.gethostname()port = 12345server_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:breakprint(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：

# 客户端代码
import socketdef client():client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)host='xxxxx'port = 12345client_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：

# 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：

# 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：