[Interest] IPV6 not working

[Thiago Macieira]

On sexta-feira, 22 de março de 2013 23.34.51, Etienne Sandré-Chardonnal wrote:
> I got it... In fact, I just learned that it's not possible to listen
> on both IPv4 and IPv6 with the same socket, and that QHostAddress::Any
> means only IPv4

That's incorrect. QHostAddress::Any listens on both address families on any 
modern OS. It breaks only on Windows XP because the IPv6 stack there is an 
add-on, not built-in. Then again, no one runs that connected to the Internet 
(right?) and definitely no one seriously uses that for IPv6.

QHostAddress::AnyIPv4 listens only on IPv4.

> Qt automatically uses the IPv6 when the DNS lookup returns both IPv4
> and IPv6, which caused the issue.
> 
> How is it done usually in server applications? Are there always two
> QTcpServers , one for IPv4 and one for IPv6?

See above.

-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
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