[Varnish] #1380: esi:request_headers support

[Varnish]

#1380: esi:request_headers support
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 Reporter:  lorenzololli     |       Type:  documentation
   Status:  new              |   Priority:  lowest
Milestone:  Varnish 3.0 dev  |  Component:  documentation
  Version:  3.0.4            |   Severity:  normal
 Keywords:  ESI              |
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 Greetings,

 I'm looking into varnish documentation about ESI, available here
 https://www.varnish-cache.org/trac/wiki/ESIfeatures
 but I do not understain if varnish does implement some ESI method.
 At the very beginning of the guide I read:
 "Roughly speaking, ESI consists of three parts, of which Varnish so far,
 implements only one:

 <esi:include>, <esi:remove> and <!--esi ... -->
 Content substitution based on variables and cookies
 Caching policy control"

 but, I cannot get any complete list of all command supported by varnish.
 In my specific case, I would like to know if ESI implementation of varnish
 cover the "esi:request_headers" support.

 Thank you in advance for your help.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1380>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator