[tor-bugs] #6415 [Tor Hidden Services]: rendclient.c doesn't set auth_len in INTRODUCE1 sometimes

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#6415: rendclient.c doesn't set auth_len in INTRODUCE1 sometimes
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 Reporter:  andrea               |          Owner:                  
     Type:  defect               |         Status:  new             
 Priority:  normal               |      Milestone:  Tor: unspecified
Component:  Tor Hidden Services  |        Version:  Tor: unspecified
 Keywords:                       |         Parent:                  
   Points:                       |   Actualpoints:                  
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Comment(by andrea):

 Turns out it *does not emit* auth_len when auth_type == REND_NO_AUTH,
 actually, so the format parsed by the old rend_service_introduce() fails
 to match the spec in such a way that changing it to handle the specified
 format would cause it to break on existing rendclient.c.  Looks like the
 least painful option would be to change the spec to match this behavior.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6415#comment:1>
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