P2P tweaks [#3507]
Closes #3507 (closed). Limit how often bad peers are re-attempted. Refactors error severity classification. Allows peer scanning and persisting to be disabled.
Changelog: refactor
Closes #3507 (closed). Limit how often bad peers are re-attempted. Refactors error severity classification. Allows peer scanning and persisting to be disabled.
Changelog: refactor