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[tor-bugs] #7013 [Tor]: Allow specifying the bind address of managed proxies



#7013: Allow specifying the bind address of managed proxies
----------------------------+-----------------------------------------------
 Reporter:  asn             |          Owner:     
     Type:  task            |         Status:  new
 Priority:  normal          |      Milestone:     
Component:  Tor             |        Version:     
 Keywords:  tor-bridge, pt  |         Parent:     
   Points:                  |   Actualpoints:     
----------------------------+-----------------------------------------------
 Tor instructs managed proxies to bind to a random port the first time they
 operate. It then stores that port in its state file, and the next time it
 spawns the same proxy it instructs it to bind to that port.

 Currently, bridge operators don't have a way to specify the TCP port that
 their managed proxies will use to bind, and people rely on hacks, like
 editing the state file, to achieve this.
 People need specific bind addresses because of port forwarding and because
 they might want to have their obfsproxy bind to a different IP address
 than their `INADDR_ANY`.

 We should think about adding an optional configuration parameter to allow
 bind address customization. This can be:
 a) An optional parameter in the ServerTransportPlugin line.
 b) A new torrc line called `ServerTransportBindaddr` or
 `ServerTransportPluginBindaddr`.

 I think I'm drifting towards 'b'. It's easier to implement and in the
 future we might also want `ServerTransportPluginStateDirectory` (etc.) and
 I'm not sure if we want to polute the ServerTransportPlugin line that
 much.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7013>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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