[tor-bugs] #2191 [Tor Client]: Send all error-level log messages to controllers

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#2191: Send all error-level log messages to controllers
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 Reporter:  rransom             |        Type:  defect    
   Status:  new                 |    Priority:  major     
Milestone:  Tor: 0.2.2.x-final  |   Component:  Tor Client
  Version:                      |    Keywords:            
   Parent:                      |  
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Comment(by nickm):

 > only log error-level messages when a crash is imminent (e.g. in
 tor_assert)

 ERR is not just for crashes; it's for any nonrecoverable error that means
 Tor needs to stop right now.  Probably that's close enough though.

 > send error-level log messages

 We should consider some kind of fast-path for sending error logs to
 controllers: we could bypass the whole buffered network IO layer and just
 call send() on the log message.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2191#comment:1>
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