Listening on both ipv6 and ipv4 addresses

[morganzhh]

Using "::" as the binding address could listening on local ipv6 and local ipv4 addresses.

Reference

nodejs/node#9390

List here

OS	Listen IPv6 address	Does equivalent IPv4 auto listened
Windows 7Pro/10	::	YES
Mac OS X EI Capitan 10.11.6	::	YES
Ubuntu 14.04/16.04	::	YES
Windows 7Pro/10	::1	NO
Mac OS X EI Capitan 10.11.6	::1	NO
Ubuntu 14.04/16.04	::1	NO
Windows 7Pro/10	ActualIPv6Address	NO
Mac OS X EI Capitan 10.11.6	ActualIPv6Address	NO
Ubuntu 16.10	ActualIPv6Address	NO

[codecov-io]

Codecov Report

Merging #232 into devel-server will not change coverage.
The diff coverage is 0%.

@@              Coverage Diff              @@
##           devel-server     #232   +/-   ##
=============================================
  Coverage         41.22%   41.22%           
=============================================
  Files                25       25           
  Lines              6282     6282           
  Branches           1244     1244           
=============================================
  Hits               2590     2590           
  Misses             3197     3197           
  Partials            495      495

Impacted Files	Coverage Δ
server/main.c	36.1% <0%> (ø)	⬆️

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[jktjkt]

I like this change. However, there are more occurrences of 0.0.0.0 in the sources, including the sample configuration XML. They should be all changed.

[michalvasko]

Hi,
I actually seem to remember that we initially listened on :: but there were problems with it if you compiled it an run on a machine without IPv6 support. This could be detected by CMake but I am not sure it is worth it. If you do not want to listen on 0.0.0.0, just enable server configuration and you can listen on whatever interfaces you want, that is how it was intended.

Regards,
Michal

[morganzhh]

Hi Michal,

I forgot the "ipv6 not enable part", then the configuration file is the right way to do.

Thanks,
Morgan