[tor-relays] Relays with broken DirPorts

[starlight.2016q1 at binnacle.cx]

These relays all appear at least somewhat overrated by BWauths and are not rate-limiting with BandwidthRate.

DirPort performance is bad due to a saturated physical link or 'tc' bandwidth limit, so TCP congestion back-off kicks in.

If BandwidthRate were the limiting factor DirPort would return a 503 (busy) error.

Reason for the overrating is a serious bug in Torflow resulting in relays going unmeasured for extended periods, possibly more than 30 days at which time a BWauth will cease listing an affected relay.

I'm planning to work on fixing this, but have not had the time and presently don't see getting to it before early summer.


>Dear Relay Operators,
>
>Also while working on #17158, I found some relays whose DirPort 
>responses made my python script hang. It wouldn't even respond 
>to ^C, but that might just be an OS X thing, or a stem thing.
>
>I'm not sure what to do about these relays. I'd like to do a 
>tcpdump / Wireshark check, but I don't have time at the moment.
>Would anyone like to follow this up?
>
>This is an incomplete list of broken relay IPs and DirPorts, 
>starting with those with the highest consensus weight:
>217.23.14.190:1194
>151.80.164.147:80
>148.251.255.92:80
>78.142.19.59:80
>
>Thanks
>
>Tim
>
>Tim Wilson-Brown (teor)