windows环境tornado搭建websocket

项目结构

websocket server端代码

在实际开发中用到了跨域，所以这里添加了跨域
而且在tornado中如果websocket和发起websocket请求的网址不同源，会报403错误，所以在这里重写了check_origin这个方法。

from abc import ABC

import tornado.web
import tornado.websocket
import tornado.httpserver
import tornado.ioloop


class WebSocketHandler(tornado.websocket.WebSocketHandler, ABC):

    def set_default_headers(self):
        """
        该方法实现跨域
        """
        self.set_header("Access-Control-Allow-Origin", "*")
        self.set_header("Access-Control-Allow-Headers", "x-requested-with")
        self.set_header('Access-Control-Allow-Methods', 'POST, GET, OPTIONS')

    def check_origin(self, origin: str):
        """
        重写同源检查方法
        """
        return True

    def open(self):
        self.write_message("打开了连接！")

    def on_message(self, message):
        self.write_message("Your message was: " + message)
        print(message)
        self.write_message("hahaha")

    def on_close(self):
        self.write_message("关闭了连接！")


class MainPageHandler(tornado.web.RequestHandler, ABC):

    def get(self):
        self.render("websocket_client.html")


application = tornado.web.Application(
    handlers=[
        (r"/", MainPageHandler),
        (r"/ws", WebSocketHandler),
    ],
    template_path="templates",
    debug=False,
)

if __name__ == '__main__':
    server = tornado.httpserver.HTTPServer(application)
    server.listen(8889)
    tornado.ioloop.IOLoop.current().start()

websocket client端代码