Verbose logging for http connection#3

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AntonShanyuk wants to merge 3 commits intofoo4u:masterfrom

AntonShanyuk:master

Commits on Dec 13, 2019

Increased logging for start proxying
AntonShanyuk
committed

Commits on Dec 17, 2019

Added http connection logging
AntonShanyuk
committed

Commits on Dec 19, 2019

Added logging into error handlers
AntonShanyuk
committed