[Varnish] #816: Add a way to get the hash used (req.hash)

[Varnish]

#816: Add a way to get the hash used (req.hash)
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 Reporter:  grosser2     |       Owner:  phk  
     Type:  enhancement  |      Status:  new  
 Priority:  normal       |   Milestone:       
Component:  varnishd     |     Version:  trunk
 Severity:  normal       |    Keywords:       
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Comment(by grosser2):

 what i am currently using is:
 set req.http.X-Hash = xxx;
 set req.http.X-Hash = "#" yyy;
 ...
 set req.hash = req.http.X-Hash;

 and in the app i copy req headers to response
 headers['X-Hash'] = request.headers['HTTP_X_HASH']

 it works but its quiet ugly :>

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Ticket URL: <http://www.varnish-cache.org/trac/ticket/816#comment:1>
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