[Varnish] #758: x-forwarded-for header concatenates for every restart

[Varnish]

#758: x-forwarded-for header concatenates for every restart
----------------------+-----------------------------------------------------
 Reporter:  bert-jan  |        Type:  defect
   Status:  new       |    Priority:  normal
Milestone:            |   Component:  build 
  Version:  2.1.3     |    Severity:  normal
 Keywords:            |  
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 Every time a request is restarted to try a different backend server in a
 cluster, the x-forwarded-for header gets the client ip added to it, even
 if it's already there:

 1st try[[BR]]
 TxHeader     b X-Forwarded-For: 83.161.214.5

 1st restart[[BR]]
 TxHeader     b X-Forwarded-For: 83.161.214.5, 83.161.214.5

 2nd restart[[BR]]
 TxHeader     c X-Forwarded-For: 83.161.214.5, 83.161.214.5, 83.161.214.5

 3rd restart[[BR]]
 TxHeader     b X-Forwarded-For: 83.161.214.5, 83.161.214.5, 83.161.214.5,
 83.161.214.5

 Obviously something went very wrong for all servers to be broken (haven't
 figured that out yet because only one actually was for this specific
 request) but this struck me as odd.

-- 
Ticket URL: <http://varnish-cache.org/ticket/758>
Varnish <http://varnish-cache.org/>
The Varnish HTTP Accelerator