<div dir="ltr">Matthias,<div><br></div><div>Hey, thanks for this we will work something out asap. We'll let you know as soon as we get a fix in place and have a package staged for you to test.</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Jul 29, 2015 at 12:34 PM, Bourillon, Matthias <span dir="ltr"><<a href="mailto:Matthias.Bourillon@saint-gobain.com" target="_blank">Matthias.Bourillon@saint-gobain.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="FR" link="blue" vlink="purple">
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<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"><span lang="EN-US">I have used Aerogear Android SDK (2.2.0) in a native Android App to communicate with an Aerogear Unified Push server and to use Google Cloud Messaging.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">After several tests we have identified an issue with token management :<u></u><u></u></span></p>
<p><u></u><span lang="EN-US"><span>-<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US">register() successfully generates a token
<b>A</b> against GCM and registration is OK on Aerogear server side<u></u><u></u></span></p>
<p><u></u><span lang="EN-US"><span>-<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US">unregister() successfully invalidates the token
<b>A</b> against GCM (“NotRegistered” is generated on GCM side when re-using the token) and unregistration is OK on Aerogear server side<u></u><u></u></span></p>
<p><u></u><span lang="EN-US"><span>-<span style="font:7.0pt "Times New Roman"">
</span></span></span><u></u><span lang="EN-US">when calling register() back, registration happens against Aerogear server but with
<b>token A</b> which has been invalidated by GCM<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">After analyzing the SDK source code, we realized that the token is saved in Android Shared Preferences but this token is never removed from shared preferences when calling unregister()!<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">As a consequence, when a user unregisters/registers to a variant<b>, the “old” token is not renewed</b> and notification sending fails since Google has invalidated this token!<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">We quickfixed the AeroGearGCMPushRegistrar class by adding a following line in the unregister() method :<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">AeroGearGCMPushRegistrar.this.setRegistrationId(context, "");<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">However, I am very surprised that this issue was never seen before.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Am I using the registration/unregistration methods incorrectly? How can I force the token re-generation against GCM?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Matthias<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
</div>
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