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POWhen does android show a pairing dialog when using insecure RFCOMM bluetooth sockets?
 

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    <p>I am trying to connect two unpaired android devices via Bluetooth for P2P networking purposes. MitM protection is not required. Android has the <code>createInsecureRfcommSocketToServiceRecord</code> and <code>listenUsingInsecureRfcommWithServiceRecord</code> for this (since API level 10), which works perfectly on modern devices. However, on a Galaxy Ace (Android 2.3.3 = API level 10, connecting with a Galaxy Nexus), it creates a pairing dialog. This happens both on incoming and outgoing connections. (<strong>Update</strong>: Updating the Galaxy Ace to Android 2.3.6 apparently fixes the problem. Is there a specific Android version that always/never does this?)</p> <p>After the pairing is accepted, the connection works. For this reason, I think this is not related to <a href="http://code.google.com/p/android/issues/detail?id=40101" rel="nofollow noreferrer">Issue 40101: createInsecureRfcommSocketToServiceRecord causes pairing dialog on Android 4.2</a> which should only happen if the service record does not exist.</p> <p>I assume this dialog cannot be avoided on devices where it comes up (if it can, explaining how to do this is a valid answer). For this reason, <strong>I would like to know when such a dialog is brought up.</strong> I did not find anything in the Android Java source (it goes native pretty quickly). I doubt it has anything to do with the Bluetooth version, since the Ace has Bluetooth 2.1 which is supposed to support the required "just works" connections.</p> <p>If there is anything that would allow me to detect whether a device will support connections without popping the dialog, or if it was clearly fixed to a certain android version, that would immensely help me.</p> <p>Also, I am looking for a way to easily <a href="https://stackoverflow.com/questions/16381416/is-there-a-way-to-set-app-compatibility-per-android-version-not-api-level-in-t">exclude such devices</a>.</p>
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