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POAndroid GCM sent successfully but not received on some devices
 

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  1. POAndroid GCM sent successfully but not received on some devices
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    <p>On the server side, I am using GCM server 1.0.2 library provided by Google. On the client side, I set up GCM as provided on the <a href="http://developer.android.com/google/gcm/client.html" rel="noreferrer">official documentation</a>.</p> <p>My problem is that everything works fine on most devices, but on few devices, push is not recieved.</p> <pre><code>if (case1) message = new Message.Builder() .timeToLive(0) .collapseKey("0") .delayWhileIdle(false) .addData("msg", msg).build(); else if (case2) message = new Message.Builder() .collapseKey("2") .addData("msg", msg).build(); else message = new Message.Builder().addData("msg", msg).build(); Result result = sender.sendNoRetry(message, regId); System.out.println("Message ID:"+result.getMessageId()); System.out.println("Failed:" + result.getErrorCodeName()); </code></pre> <p>From what I can see from tests with the above code, there are no error. The message id is present, but error code name is null(which is a sign of <a href="http://developer.android.com/reference/com/google/android/gcm/server/Result.html" rel="noreferrer">successful push</a>). </p> <p>I've tried almost every setting. Tested with TTL, collapse key, delay while idle set on and off.</p> <p>What are some cases that can cause to block(?) GCM push? And how can I resolve this?</p> <h2>EDIT</h2> <p>I have no idea why but the temporary solution below solved my problem.</p> <p>In GcmIntentService#onHandleIntent just remove</p> <pre><code>GcmBroadcastReceiver.completeWakefulIntent(intent); </code></pre> <p>This line releases the wakeful service. I am curious though because on other devices, push messages are sent continuously even when this line was not removed.</p> <p>This is not a solution because <a href="http://developer.android.com/reference/android/support/v4/content/WakefulBroadcastReceiver.html#startWakefulService%28android.content.Context,%20android.content.Intent%29" rel="noreferrer">this document</a> states that I should call completeWakeFulIntent after each work. Also, my method will drain the battery significantly.</p> <p>Any suggestion?</p>
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    1. COAre you testing on WiFi?
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    2. CO@Apoorv No, on LTE network. Just tested it with WIFI, but no push recieved...
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    3. COIf the message is sent successfully the regID must be wrong/invalid and google cloud messaging cannot deliver the message.
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