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Re: [tor-bugs] #4854 [Vidalia]: Option to relay while running screensaver

#4854: Option to relay while running screensaver
-------------------------+--------------------------------------------------
 Reporter:  atagar       |          Owner:  chiiph
     Type:  enhancement  |         Status:  new   
 Priority:  minor        |      Milestone:        
Component:  Vidalia      |        Version:        
 Keywords:               |         Parent:        
   Points:               |   Actualpoints:        
-------------------------+--------------------------------------------------

Comment(by rtoepfer):

 There are two routing designs: connection-oriented versus connection-less.
 The modern internet is connection-less as packets can be routed around
 failed or slow networks.  Older telephony based communications designs are
 usually connection-oriented as a circuit is setup at the start or
 initiation of a session and this circuit exists indefinitely or until the
 end of session - there is NO account for point of failures.

 Tor is a hybrid.  The Tor application uses TCP/IP but a virtual circuit is
 created amongst the user computer, Tor onion routers, and destination
 computer.  If an onion router is allowed to variably slow or halt network
 bandwidth use then the control protocol should allow users to reroute
 virtual circuits.  I do not see this option in  Tor.  The time cost of re-
 initiating TCP 3-way handshakes and socket encryption sessions amongst the
 user and Tor onions would cripple Tor services.

 Possible solutions would be to place the Tor TCP/IP routing in a IDLE
 thread priority or to only route packets if a user input timeout occurs
 (ie no keyboard/mouse input in X minutes).  However, the effects on the
 entire Tor network performance in having to reinitialize Tor circuits when
 an onion router halts has to be considered.


 Randall
 http://zydecodigital.com

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4854#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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