Interesting, I&#x27;ll read through this. Nchan code is quite modular, so it would be pretty easy to add some kind of negotiation like this. Let&#x27;s talk more.<p>For reference, here&#x27;s the old document I wrote for the long-polling protocol back in &#x27;09: <a href="https:&#x2F;&#x2F;pushmodule.slact.net&#x2F;protocol.html" rel="nofollow">https:&#x2F;&#x2F;pushmodule.slact.net&#x2F;protocol.html</a>