fix: support ipv6 address when set endpoint

[luozhang002]

fix:
support ipv6 address when set endpoint

[codecov-io]

Codecov Report

Merging #482 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #482      +/-   ##
==========================================
+ Coverage   96.91%   96.92%   +0.01%     
==========================================
  Files          12       13       +1     
  Lines        1427     1432       +5     
  Branches      272      273       +1     
==========================================
+ Hits         1383     1388       +5     
  Misses         44       44

Impacted Files	Coverage Δ
lib/client.js	92.88% <100%> (ø)	⬆️
lib/common/utils.js	100% <100%> (ø)

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