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Prop 324: Updates for Negotiation and Simulation Testing

Merged Prop 324: Updates for Negotiation and Simulation Testing
mikeperry/torspec:prop324-negotiation-reviewed+resquashed into main
Merged Mike Perry requested to merge mikeperry/torspec:prop324-negotiation-reviewed+resquashed into main
  1. Feb 22, 2022
    • Mike Perry's avatar
      Prop 324: Updates for Negotiation and Simulation Testing · 71c326ae
      Mike Perry authored 
      Changes:
  - Rework exit negotiation logic a bit
  - Specify using ntorv3 with extension fields for negotiation
  - Clients only request congestion control; exits and services
    control sendme_inc
  - Rework onion service negotiation for descriptor-controlled
    FlowCtrl protover and sendme_inc value
  - Add bounds checks on sendme_inc for clients
  - Update parameter values based on Shadow results
  - Improvements to TOR_VEGAS algorithm based on simulation testing
  - Additional consensus parameters for RTT N-EWMA smoothing and
    TOR_VEGAS queue use caps
  - Clarify N_EWMA smoothing, and relocate it to its own sub-section.
  - TOR_VEGAS now defaults to CWND/RTT BDP estimator
  - Minor TOR_VEGAS alg bugfixes
  - Add a 'delta' parameter to TOR_VEGAS for steady-state backoff
  - Consensus param update notes and param range fixes.
  - Add glossary of common congestion control acronyms
  - Misc clarifications
      71c326ae