码头9将websockets处理程序添加到处理程序列表 [英] jetty 9 add websockets handler to handler list

问题描述

该示例中的所有处理程序都与websockets处理程序分开工作

All handlers in that example work apart from the websockets handler

       WebSocketHandler wsHandler = new WebSocketHandler() {
        @Override
        public void configure(WebSocketServletFactory factory) {
            factory.register(WebsocketsService.class);
        }
    };

    HandlerList handlers = new HandlerList();
    handlers.setHandlers(new Handler[] { resource_handler, servletContextHandler, wsHandler, new DefaultHandler() });
    server.setHandler(handlers);

失败

与'ws://localhost:8080/'的WebSocket连接失败:WebSocket握手期间出错:意外的响应代码:200

WebSocket connection to 'ws://localhost:8080/' failed: Error during WebSocket handshake: Unexpected response code: 200

如何正确配置和添加一个websockets处理程序(也许将不同的Path和Port作为servletContextHandler或可以在其中添加?)?

how would be a websockets handler properly configured and added (maybe with a differen Path and Port as the servletContextHandler or could it be added there ?) ?

推荐答案

一些事情.

1. 请勿混合使用ResourceHandler和ServletContextHandler，使用从ServletContextHandler，其资源库和DefaultServlet提供的内置静态文件(请参阅有关此问题的先前答案)
2. 请勿混用WebSocketHandler和ServletContextHandler，在ServletContextHandler中使用WebSocketUpgradeFilter，然后在其中添加/管理websocket端点. (请参见 embedded-jetty-cookbook 和

1. Don't mix ResourceHandler and ServletContextHandler, use the built-in static file serving from ServletContextHandler, its Resource Base, and the DefaultServlet (see prior answer with details)
2. Don't put anything after your ServletContextHandler (if your ServletContextHandler is on contextPath /). Once a ServletContextHandler is entered (per the contextPath), then it must complete/finish (this is part of the servlet spec), no other handler after that ServletContextHandler will ever run. (see prior answer about this)
3. Don't mix WebSocketHandler and ServletContextHandler, use the WebSocketUpgradeFilter in your ServletContextHandler and add/manage the websocket endpoints there. (see the embedded-jetty-cookbook and the WebSocketViaFilter example for how to use it)

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