QTcpServer retrieve more than one address

Question

I use QTcpServer from the Qt-Framework with C++.

I started it with

ret = tcpServer->listen(QHostAddress::Any, 9871)

With

QHostAddress serverAddress () const

I retrieve the Address from it. Which is 0.0.0.0. In my opinion it should listen on more than one address (like 127.0.0.1 and the LAN Address).

Is there a way to retrieve more than one address from this class?

What do you mean by "retrieve" ? – ereOn Nov 24 '10 at 10:20 — ereOn, Nov 24 '10 at 10:20

score 3 · Accepted Answer · answered Nov 24 '10 at 10:24

3

I'm not sure what your question is exactly, but...

Usually, a 0.0.0.0 means that the socket listen to all interfaces that are both up and configured with a valid IPv4 address.

If you want to get all the available IP addresses on the system, you should enumerate the network interface then query their respective IPv4 address (Probably with an ioctl, specifying SIOCGIFSWADDR).

answered Nov 24 '10 at 10:24

ereOn

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Ah ok. Nice to know that this is the meaning of 0.0.0.0. Thanks! that answered my question! – Herrbert Nov 24 '10 at 16:05
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@Herrbert: You're welcome :) Btw, if you ever need the IPv6 equivalent, it's `::`. – ereOn Nov 24 '10 at 16:43

score 1 · Answer 2 · edited Nov 05 '15 at 06:59

1

I agree with ereOn's answer above.

If you want to list your network interface adresses, take a look at QNetworkInterface.

edited Nov 05 '15 at 06:59

Christophe Weis

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answered Nov 24 '10 at 14:22

guruz

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QTcpServer retrieve more than one address

2 Answers2