ForceIPHTTPAdapter bug fix

[sepandhaghighi]

Reference Issues/PRs

What does this implement/fix? Explain your changes.

• ForceIPHTTPAdapter class bug fixed

Any other comments?

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.69%. Comparing base (dfb007b) to head (05232a8).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev      #77      +/-   ##
==========================================
+ Coverage   77.66%   77.69%   +0.02%     
==========================================
  Files           4        4              
  Lines         394      390       -4     
  Branches       42       41       -1     
==========================================
- Hits          306      303       -3     
  Misses         70       70              
+ Partials       18       17       -1     

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[sepandhaghighi]

In the previous version of the ForceIPHTTPAdapter class (known as IPv4HTTPAdapter in version 0.5), there was a major bug. This bug occasionally prevented socket.getaddrinfo from reverting to its original value, making it practically impossible to switch between IP versions.

Before:

After:

[sadrasabouri]

Good fix, looks good to me.