[tor-bugs] #7346 [Tor]: Add stream-level pushback into n23 design

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#7346: Add stream-level pushback into n23 design
-------------------------------------+--------------------------------------
 Reporter:  arma                     |          Owner:                  
     Type:  project                  |         Status:  new             
 Priority:  normal                   |      Milestone:  Tor: unspecified
Component:  Tor                      |        Version:                  
 Keywords:  performance flowcontrol  |         Parent:                  
   Points:                           |   Actualpoints:                  
-------------------------------------+--------------------------------------
 In #4485 we identified what looks to be a flaw in the n23 design: since
 n23 only regulates how many cells can be in-flight on the circuit, it has
 no way to inform the other side that a given stream is blocked on writing
 and the other side should stop sending cells for that stream.

 Options include something like the current stream-level sendmes (which
 would be a shame), or some sort of xoff/xon interface, or some other smart
 idea.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/7346>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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