[ISSUE #303] Catch exception when resolve domain failed

[ifplusor]

What is the purpose of the change

Avoid crash when resolve domain failed.

Brief changelog

Catch exception when resolve domain failed.

Verifying this change

XXXX

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[codecov-commenter]

Codecov Report

Merging #311 into master will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master     #311   +/-   ##
=======================================
  Coverage   59.01%   59.01%           
=======================================
  Files         205      205           
  Lines       12985    12985           
=======================================
  Hits         7663     7663           
  Misses       5322     5322           

Impacted Files	Coverage Δ
src/transport/TcpTransport.cpp	0.00% <0.00%> (ø)

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