Fix socket CLOSE_WAIT error in tunnel agent#21

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mike442144 wants to merge 3 commits intorequest:masterfrom bda-research:callback

+4-4

Commits on Nov 22, 2016

destroy socket when error
mike442144
committed

Commits on Dec 15, 2016

callback even if connect response statuscode is not 200
mike442144
committed

Commits on Dec 21, 2016

fix close_wait bug
mike442144
committed