log the real client ip when using httpupgrade transport

[scncpazl]

#3329
Through testing with Nginx, the real IP address can be obtained, not 127.0.0.1.

[xiaokangwang]

Thanks for the contribution. This function should be controlled via a option, rather than applied by default, as when listening directly, this ip address can be set by client.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 23.19%. Comparing base (7fdb717) to head (f653a4a).

Files with missing lines	Patch %	Lines
transport/internet/httpupgrade/hub.go	0.00%	8 Missing ⚠️
transport/internet/httpupgrade/connection.go	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3608      +/-   ##
==========================================
- Coverage   23.21%   23.19%   -0.03%     
==========================================
  Files         836      836              
  Lines       45454    45464      +10     
==========================================
- Hits        10552    10544       -8     
- Misses      33685    33700      +15     
- Partials     1217     1220       +3     

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