Some trouble with QNetworkAccessManager and wifi on Windows 7

nelbok

Hello,

I am using Qt 5.9.5 on Windows 7.

When I want to check the network, QNetworkAccessManager::networkAccessible() return NotAccessible...
When I use my internet browser, I have no problem to navigate on Internet.

Its works fine on Windows 10 and macOS. What I am missing to have this work on Windows 7?

Regards,

nelbok

mrjj

Hi
You might have more than one interface so maybe you are asking the wrong one?
You can list the ones it knows
http://doc.qt.io/qt-5/qnetworkconfigurationmanager.html#allConfigurations
and see what is going on.

nelbok

Hello,

I have checked the active configuration and configuration on Windows7. Both doesn't get a valid configuration.

When I check the QNetworkConfiguration::allConfiguration, I can see 2 connections :

Ethernet connection not pluged
WiFi connection with QNetworkConfiguration::bearerTypeName equals Unknown

So maybe QNetworkAccessManager::configuration didn't get a configuration from QNetworkConfigurationManager?

Regards,

nelbok

mrjj

Hi
That is a bit odd.
Same code just works on win 10 ?

nelbok

Hello,

Yes, same code works on Windows 10.

But when checked on them, they didn't found the wifi and have differents configurations:

Teredo Tunneling Pseudo-Interface
Virtual Ethernet like Hyper-V
Some other interface with Internet possibility

I think it is not the best way to test if there are a possible internet connection...

Regards,

nelbok

mrjj

Hi
If only to check for internet then i agree :)
Its much easier just to try to use it as it will then use the default interface like
all other apps.
http://amin-ahmadi.com/2016/04/05/check-internet-connection-availability-status-qt/

nelbok

Hello,

After some tests. It doesn't work on Qt 5.10 and Qt 5.11.

I have also tested with Qt 5.6.3 and I can see the WiFi connection.
But, when I cut my WiFi, Its keep the connection...

I think there are some trouble, I will fill a report to see if it is possible to improve this.

For your link, yes, it works as long that we can ping the server and the server is not offline or blocked.

I can always use https://msdn.microsoft.com/en-US/library/windows/desktop/aa384702(v=vs.85).aspx to know if we are connected.
Now I need to create a class that can send a signal when the connection change.

Regards,

nelbok

mrjj

Ok, it sounds like a bug then.
Good if you open ticket.
Make sure to include a small complete working example they can use
to reproduce it.