How much of the ESI spec is implemented?

[Tollef Fog Heen]

]] Kurt Mackey 

First, sorry for taking ages to get back to you.

| So ESI looks interesting, but I can't quite figure out the extent to
| which Varnish supports it.

We just support the simple esi:include, ESI comments and esi:remove, not
anything more at the moment.

| For instance, the ESI expressions look ridiculously useful in
| conjunction with the include tag.  Can you do things like this?
| 
| <esi:include src="http://example.com/users/$(COOKIE{username})/$(COOKIE{token})"/>

Yes, it'd be quite useful.

| I'm not good enough to completely understand the source, but it looks like that example may not be possible.
| 
| It would be awesome to see expression support and support for the
| choose/when/otherwise tags as well.  Is that the type of thing that
| someone could sponsor for development?

I don't believe we will want to do choose/when/otherwise, but sponsoring
of includes based on cookies is something that would be interesting to
us.  Feel free to get in touch with varnish at linpro about it.

-- 
Tollef Fog Heen 
Redpill Linpro -- Changing the game!
t: +47 21 54 41 73