websockets模块

python服务端代码

import asyncio
import websockets
 
# 检测客户端权限，用户名密码通过才能退出循环
async def check_permit(websocket):
    while True:
        recv_str = await websocket.recv()
        cred_dict = recv_str.split(":")
        if cred_dict[0] == "admin" and cred_dict[1] == "123456":
            response_str = "congratulation, you have connect with server\r\nnow, you can do something else"
            await websocket.send(response_str)
            return True
        else:
            response_str = "sorry, the username or password is wrong, please submit again"
            await websocket.send(response_str)
 
# 接收客户端消息并处理，这里只是简单把客户端发来的返回回去
async def recv_msg(websocket):
    while True:
        recv_text = await websocket.recv()
        response_text = f"your submit context: {recv_text}"
        await websocket.send(response_text)
 
# 服务器端主逻辑
# websocket和path是该函数被回调时自动传过来的，不需要自己传
async def main_logic(websocket, path):
    await check_permit(websocket)
 
    await recv_msg(websocket)
 
# 把ip换成自己本地的ip
start_server = websockets.serve(main_logic, '10.10.6.91', 5678)
# 如果要给被回调的main_logic传递自定义参数，可使用以下形式
# 一、修改回调形式
# import functools
# start_server = websockets.serve(functools.partial(main_logic, other_param="test_value"), '10.10.6.91', 5678)
# 修改被回调函数定义，增加相应参数
# async def main_logic(websocket, path, other_param)
 
asyncio.get_event_loop().run_until_complete(start_server)
asyncio.get_event_loop().run_forever()

python版客户端代码

import asyncio
import websockets
 
# 向服务器端认证，用户名密码通过才能退出循环
async def auth_system(websocket):
    while True:
        cred_text = input("please enter your username and password: ")
        await websocket.send(cred_text)
        response_str = await websocket.recv()
        if "congratulation" in response_str:
            return True
 
# 向服务器端发送认证后的消息
async def send_msg(websocket):
    while True:
        _text = input("please enter your context: ")
        if _text == "exit":
            print(f'you have enter "exit", goodbye')
            await websocket.close(reason="user exit")
            return False
        await websocket.send(_text)
        recv_text = await websocket.recv()
        print(f"{recv_text}")
 
# 客户端主逻辑
async def main_logic():
    async with websockets.connect('ws://10.10.6.91:5678') as websocket:　　
        await auth_system(websocket)
 
        await send_msg(websocket)
 
asyncio.get_event_loop().run_until_complete(main_logic())

html代码

<html>
    <textarea id="response"></textarea>
    <script>
        var ws = new WebSocket('ws://localhost:9999')　　//wss=https
        ws.onopen=function () {
            console.log('open')
        }
        ws.onclose=function () {
            console.log('close')
        }
        ws.onmessage=function (e) {
            response.innerHTML += e.data + '\n\r'
        }
    </script>
</html>