[#462] when recv file, if file exist, save to foo (1).ext (was 1_foo.ext)

[lidaobing]

No description provided.

[codecov]

Codecov Report

Merging #463 (60f8e3a) into master (258b94d) will decrease coverage by 0.40%.
The diff coverage is 68.96%.

@@            Coverage Diff             @@
##           master     #463      +/-   ##
==========================================
- Coverage   44.83%   44.43%   -0.41%     
==========================================
  Files          70       67       -3     
  Lines        7737     7668      -69     
==========================================
- Hits         3469     3407      -62     
+ Misses       4268     4261       -7     

Impacted Files	Coverage Δ
src/iptux-core/internal/AnalogFS.cpp	0.00% <0.00%> (ø)
src/iptux-utils/utils.h	100.00% <ø> (ø)
src/iptux-utils/utils.cpp	57.58% <74.07%> (+3.18%)	⬆️
src/iptux-core/CoreThread.cpp	70.00% <0.00%> (-0.25%)	⬇️
src/iptux-utils/TestMain.cpp
src/iptux-utils/TestHelper.cpp

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