pushlet相关资料链接

http://blog.sina.com.cn/s/blog_647a022e0101fu0n.html

http://www.pushlets.com/src/nl/justobjects/pushlet/core/Subscriber.java.html

http://lewis-fxb.iteye.com/blog/1446570

http://88250.b3log.org/server-push-based-on-pushlets