[Varnish] #1156: first_byte_timeout is "doubled" on the client side when keep-alive is used

[Varnish]

#1156: first_byte_timeout is "doubled" on the client side when keep-alive is used
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 Reporter:  tnt       |       Owner:
     Type:  defect    |      Status:  new
 Priority:  normal    |   Milestone:
Component:  varnishd  |     Version:  trunk
 Severity:  normal    |  Resolution:
 Keywords:            |
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Comment (by Poul-Henning Kamp <phk@…>):

 In [feac37150e5820cb36b0181811a47b957cd9b51c]:
 {{{
 #!CommitTicketReference repository=""
 revision="feac37150e5820cb36b0181811a47b957cd9b51c"
 Don't do automatic backend retry if we have received anything from the
 backend at all.  The retry is only (pseudo-)valid when we have not
 received
 anything at all, indicating that the backend closed before it got our
 request.

 Also don't retry if we sent the request body (not part of test-case).

 Fixes #1156
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1156#comment:5>
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