long polling netty nio framework java

Question

How can I do long-polling using netty framework? Say for example I fetch http://localhost/waitforx

but waitforx is asynchronous because it has

Answer 1

You could also do the following in [sfnrpc]: http://code.google.com/p/sfnrpc

Object object = RPCClient.getInstance().invoke("#URN1","127.0.0.1:6878","echo",true,60,"", objArr,classArr, sl);

The true causes communication to be synchronous.