[Varnish] #1810: HTTP/1.0 EOF from backend broken

[Varnish]

#1810: HTTP/1.0 EOF from backend broken
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 Reporter:  phk       |       Owner:  phk
     Type:  defect    |      Status:  new
 Priority:  normal    |   Milestone:
Component:  varnishd  |     Version:  trunk
 Severity:  normal    |  Resolution:
 Keywords:            |
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Comment (by phk):

 Ok, this is more complicated than I thought.

 If we send a HTTP/1.0 request to the backend, the backend is in its full
 right to send us an answer with "HTTP/1.1" as protocol, *as long* as it
 only uses HTTP/1.0 semantics.

 We fail because we trust the protocol field and semantics match.

 We need to look both at what we sent to the backend and what we got back,
 to determine semantics.

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1810#comment:3>
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