On iPhone 4 IOS 4.3.5, if I start playing music the iPod app is getting or sending information from internet.
To reproduce it :
kill the ipod app using the "taskbar"
then play some music
your will notice the turning "wheel" of data transfer during a few seconds
I am not using Genius or Ping.
I have already the song cover.
I don't have any vocals
Do you have an idea of what kind of info is sent or received ?
Update : I am trying to connect through fiddler on my PC
Fiddle is acting as a proxy and will let me inspect the data
BUT the wifi proxy settings is returning from manual to disabled all the time !
Best Answer
The iPod app is contacting iTunes server to get some encrypted keys. Three of them actually, respectively called "signature", "certs" and "bag". All of them are part of an xml (plist) file located at
http://ax.init.itunes.apple.com/bag.xml?ix=2
.There's no POST data, just some cookies and HTTP headers giving information about the device and the context. These informations are part of many request made to Apple servers by iOS.
I have no idea what this "bag" can be nor what it's used for.
Details
Here's the request headers :
The cookies names :
And the XML scheme :
The "certs" part seems to be constant, even with a standard browser and none of the special HTTP headers or cookies.
(I don't want to publish too many details as I don't know what they contain about me or my Apple ID.)