Ensure proxy connection is closed in proxyRaw function(#2837)

[kumapower17]

(#2837)
Ensure proxy connection is closed in proxy middleware proxyRaw function

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.02%. Comparing base (f24aaff) to head (feae49e).
⚠️ Report is 19 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2838      +/-   ##
==========================================
+ Coverage   93.25%   94.02%   +0.77%     
==========================================
  Files          39       39              
  Lines        4652     3816     -836     
==========================================
- Hits         4338     3588     -750     
+ Misses        218      134      -84     
+ Partials       96       94       -2     

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[aldas]

Thanks