Re: [Cppcms-users] SSE keep-alive

[Markus R. <us...@ma...>]

Hello!

Artyom Beilis wrote:
> I don't really understand why do you have mutex...
> 
> You may not write to the event stream from a thread that is not the event
> loop thread.
> 
> If you want to notify the asynchronous SSE on anything you need to use
> cppcms::service::post() with a callback that would be executed in the
> event loop.

It would be a good idea to say that clearly on the very top of
http://cppcms.com/cppcms_ref/latest/classcppcms_1_1http_1_1context.html
http://cppcms.com/cppcms_ref/latest/classcppcms_1_1http_1_1response.html
(it would be the best if you use \warning or \note to make the pitfall more 
visible)

It is otherwise not obvious that this limitation exists.

best regards
Markus