关于服务器:使用WebSocket进行通信的简易Demo

45次阅读

共计 1208 个字符，预计需要花费 4 分钟才能阅读完成。

server.py

import asyncio
import websockets
import time
 


"""每隔 2s 给客户端发送一条音讯"""
async def echo(websocket, path):
    while True:
        now = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()) 
        await websocket.send(now) 
        await asyncio.sleep(2)
 

if __name__ == '__main__':
    start_server = websockets.serve(echo,'127.0.0.1',5000) # 改为你本人的地址
    asyncio.get_event_loop().run_until_complete(start_server)
    asyncio.get_event_loop().run_forever()

client.py

import asyncio
import websockets
 
 
async def hello(uri):
    async with websockets.connect(uri) as websocket:
        while True:
            recv_text = await websocket.recv()  # 接管音讯
            print(recv_text)
         
 
if __name__ == '__main__':
    asyncio.get_event_loop().run_until_complete(hello('ws://127.0.0.1:5000')) # 改为你本人的地址

pip 装置websockets
先启动server.py，再启动client.py。
成果：

在网页上展现。client.html

<!DOCTYPE html>
<html>
    <head>
        <title>WebSocket demo</title>
    </head>
    <body>
        <script>
            var ws = new WebSocket("ws://127.0.0.1:5000/"),
                messages = document.createElement('ul');
            ws.onmessage = function (event) {var messages = document.getElementsByTagName('ul')[0],
                    message = document.createElement('li'),
                    content = document.createTextNode(event.data);
                message.appendChild(content);
                messages.appendChild(message);
            };
            document.body.appendChild(messages);
        </script>
    </body>
</html>

启动 server.py 后再点开页面，成果：