XMLHttpRequest : doesn't work anymore after restarting the wifi adapter

Problem found on MacOSX, Ios & Android with Qt 5.5.1 official release for MacOSX

Here is a minimal code to reproduce the issue :

Window {

visible: true

Button {

text: "Test"

onClicked: {

var req = new XMLHttpRequest()
req.onreadystatechange = function (event) {
if (req.readyState === XMLHttpRequest.DONE)

{ console.log("Make request : status = " + req.status) console.log(req.responseText.toString()) }

}

req.open("GET", "http://www.google.fr", true)
req.send()
}
}
}

Steps to reproduce :

Execute the code above
Click on test : status = 200, you should see data from google
Turn off your wifi adapter
Click on test: status = 0, no data
Turn on your wifi adapter
Click on test several times: you can't reach data anymore. Status is always equals to 0

The same code works great with Qt 5.5.0