feat: ehttp trace

[lincolnzhou]

No description provided.

[codecov]

Codecov Report

Merging #256 (82b5a61) into master (e3a0677) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #256   +/-   ##
=======================================
  Coverage   61.15%   61.15%           
=======================================
  Files          77       77           
  Lines        2659     2659           
=======================================
  Hits         1626     1626           
  Misses        866      866           
  Partials      167      167           

Flag	Coverage Δ
unittests	61.15% <ø> (ø)

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