I've done some work on QNAM recently in regards to accessibility property in QNAM, and see that the patch that (which was upstreamed to qt 5.6) makes this property follow the online state like it should, is missing from ubuntu's repo.
I will try to do some testing on phone and see if this can help. I know of one bug even with the mentioned patch in regards to disconnect timing that needs to also be solved. That said, I tried compiling net-test.cpp in the sdk for phone, which failed I have a few of my own test apps and QNAM in flight mode returns something like: void Netter::replyFinished(QNetworkReply*) 3 "Host google.com not found" So by going by the original description, QNAM no longer hangs in flight mode (using the default bearer configuration) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to qtbase-opensource-src in Ubuntu. https://bugs.launchpad.net/bugs/1470700 Title: QNetworkAccessManager hangs when in flight mode Status in qtbase-opensource-src package in Ubuntu: Confirmed Status in thumbnailer package in Ubuntu: Triaged Bug description: Testing the fix: - Update rc-proposed (vivid) to citrain device-upgrade 32 0000 - Optional: If you want to test using the 'generic' bearer plugin instead of the Network Manager bearer, either do not upgrade ubuntu-touch-session or move away the file /etc/profile.d/qt_networkmanager_bearer.sh - Reboot --- When my phone is in flight mode, HTTP requests made using QNetworkAccessManager seem to hang rather than erroring out immediately. From my tests, it looks like the HTTP request is blocked until the flight mode is disabled and a network connection is reestablished. This is contrary to the documentation, which states: """If the network is not accessible the network access manager will not process any new network requests, all such requests will fail with an error. Requests with URLs with the file:// scheme will still be processed.""" http://doc.qt.io/qt-5/qnetworkaccessmanager.html#networkAccessible- prop By running strace on my test program, it doesn't even look like it attempts to open a TCP connection when blocked in flight mode. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1470700/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp