Java Servlet 3.0 server push: Sending data multiple times using same AsyncContext

Question

Lead by several examples and questions answered here ( mainly http://www.javaworld.com/javaworld/jw-02-2009/jw-02-servlet3.html?page=3 ), I want to have server sending the

Answer 1

I know this is a bit old, but you can just flushBuffer on the response as well.

Answer 2

Your server-side and client-side code is indeed ok. The problem is actually with your browser buffering text/plain responses from your web-server. This is the reason you dont see this issue when you use curl.

I took your client-side code and I was able to see incremental responses, with only just one little change:

response.setContentType("text/html");

The incremental responses showed up immediately regardless of their size.

Without that setting, when my output was a small message, it was considered as text/plain and wasnt showing up at the client immediately. When I kept adding more and more to the client responses, it got accumulated until the buffer size reached about 1024 bytes and then the whole thing showed up on the client side. After that point, however, the small increments showed up immediately (no more accumulation).