Is there any good library which supports WebSockets and is compatible with GWT? Ideally, the library would support WebSockets as well as a fallback for browsers which don't support WebSocket, e.g. a comet-like approach or polling.
I'm currently using GWT-Comet to push data from my server to my GWT web application. However, this library is a bit broken in some aspects and it seems it's not maintained actively anymore. Thus, I'm searching for an alternative.
I found Atmosphere, which suits the needs stated in the question pretty good. It supports GWT, and also Websockets. Also, it supports many different application Servers, like Tomcat and Jetty.
来源：https://stackoverflow.com/questions/9218548/gwt-and-websocket-push-data-from-server-to-gwt-client