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安装环境

pip install flask pip install aiohttp pip install python-socketio pip install "python-socketio[client]"

工程说明

  • app.py: flask工程
  • server.py:socket.io服务器
  • client.py:子客户端,可以放在你的main函数里面

修改规则

  • app.py:可以在app.py中自定义消息事件,如下所示:
@app.route('/')
def index():
    sio.emit('message', 'test')
    return 'hello world'

当在浏览器输入http://localhost:8000时,flask这边会向socket.io服务器转发消息'test'到message主题上

  • server.py:在这里修改主题转发规则,如下所示:
@socket_io.on('message')
async def print_message(id, message):
    print("socket id is {}".format(id))
    print(message)
    #enabling two-way communication
    await socket_io.emit('messageclient', "you said {}".format(message))

以上代表在收到message主题消息之后,将消息转发到messageclient主题上

  • client.py:通用客户端消息转发,代码如下
@sio.on('messageclient')
def on_message(data):
    print(data)

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flask框架搭配socket.io使用实例

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