refactor: cleanup rerouting and retry implementation

[arthurschreiber]

This cleans up the rerouting and retry implementations.

Instead of adding state specific logic to the overall close socket handler, we now just remove the close and end socket handlers and call socket.destroy before we perform rerouting or retry logic.

This moves the logic closer together and helps making it simpler to understand what's going on for both of these features.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.46%. Comparing base (e8c6228) to head (d6525ae).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1660      +/-   ##
==========================================
+ Coverage   79.21%   85.46%   +6.24%     
==========================================
  Files          90       90              
  Lines        4855     4857       +2     
  Branches      929      924       -5     
==========================================
+ Hits         3846     4151     +305     
+ Misses        704      702       -2     
+ Partials      305        4     -301     

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