Ismail Khoffi 40c887baf7 Normalize priorities to not exceed total voting power (#3049)
* more proposer priority tests

 - test that we don't reset to zero when updating / adding
 - test that same power validators alternate

* add another test to track / simulate similar behaviour as in #2960

* address some of Chris' review comments

* address some more of Chris' review comments

* temporarily pushing branch with the following changes:
The total power might change if:
   - a validator is added
   - a validator is removed
   - a validator is updated

Decrement the accums (of all validators) directly after any of these events
(by the inverse of the change)

* Fix 2960 by re-normalizing / scaling priorities to be in bounds of total
power, additionally:

 - remove heap where it doesn't make sense
 - avg. only at the end of IncrementProposerPriority instead of each
   iteration
 - update (and slightly improve)
   TestAveragingInIncrementProposerPriorityWithVotingPower to reflect
   above changes

* Fix 2960 by re-normalizing / scaling priorities to be in bounds of total
power, additionally:

 - remove heap where it doesn't make sense
 - avg. only at the end of IncrementProposerPriority instead of each
   iteration
 - update (and slightly improve)
   TestAveragingInIncrementProposerPriorityWithVotingPower to reflect
   above changes

* fix tests

* add comment

* update changelog pending & some minor changes

* comment about division will floor the result & fix typo

* Update TestLargeGenesisValidator:
 - remove TODO and increase large genesis validator's voting power
accordingly

* move changelog entry to P2P Protocol

* Ceil instead of flooring when dividing & update test

* quickly fix failing TestProposerPriorityDoesNotGetResetToZero:

 - divide by Ceil((maxPriority - minPriority) / 2*totalVotingPower)

* fix typo: rename getValWitMostPriority -> getValWithMostPriority

* test proposer frequencies

* return absolute value for diff. keep testing

* use for loop for div

* cleanup, more tests

* spellcheck

* get rid of using floats: manually ceil where necessary

* Remove float, simplify, fix tests to match chris's proof (#3157)
2019-01-19 15:55:08 -05:00
..
2018-09-18 22:26:43 +02:00
2018-07-01 22:36:49 -04:00
2018-07-01 22:36:49 -04:00
2018-12-21 17:37:28 -05:00
2019-01-11 17:41:02 -05:00

p2p

The p2p package provides an abstraction around peer-to-peer communication.

Docs:

  • Connection for details on how connections and multiplexing work
  • Peer for details on peer ID, handshakes, and peer exchange
  • Node for details about different types of nodes and how they should work
  • Pex for details on peer discovery and exchange
  • Config for details on some config option