Address WebSockets not working with TLS interception

[abhinavsingh]

Fixes #356

[codecov]

Codecov Report

Merging #365 into develop will decrease coverage by 0.03%.
The diff coverage is 50.00%.

@@             Coverage Diff             @@
##           develop     #365      +/-   ##
===========================================
- Coverage    81.55%   81.52%   -0.04%     
===========================================
  Files           72       72              
  Lines         2798     2804       +6     
===========================================
+ Hits          2282     2286       +4     
- Misses         516      518       +2     

Impacted Files	Coverage Δ
proxy/http/websocket.py	62.71% <0.00%> (ø)
proxy/http/handler.py	83.68% <25.00%> (ø)
proxy/http/proxy/server.py	78.94% <60.00%> (-0.42%)	⬇️
proxy/http/parser.py	95.54% <100.00%> (+0.05%)	⬆️

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