ios - New Command 2 Apple Push Notification Not sending multiple alerts

Question

I am trying to implement the new 'Command 2' push notification in Java and cannot have it push multiple alerts. First alert is pushed successfully. Please help if you can spot any issue on this code

Apple specs https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/CommunicatingWIthAPS.html#//apple_ref/doc/uid/TP40008194-CH101-SW1

for (DeviceApps deviceApps : deviceAppsList) {
outputStream.write(getByteArray(deviceApps, pushAlert));
}


private byte[] getByteArray(DeviceApps deviceApps, PushAlert pushAlert) {

ByteArrayOutputStream dataBao = new ByteArrayOutputStream();
// Write the TokenLength as a 16bits unsigned int, in big endian
dataBao.write((byte)1);
 dataBao.write(intTo2ByteArray(32));
dataBao.write(deviceTokenAsBytes);

// Write the PayloadLength as a 16bits unsigned int, in big endian
 dataBao.write((byte)2);
dataBao.write(intTo2ByteArray(payLoadAsBytes.length));
dataBao.write(payLoadAsBytes);

// 4 bytes. Notification identifier
dataBao.write((byte)3);
dataBao.write(intTo2ByteArray(4));
dataBao.write(intTo4ByteArray(random.nextInt()));

// 4 bytes Expiration date
dataBao.write((byte)4);
dataBao.write(intTo2ByteArray(4));
dataBao.write(intTo4ByteArray(pushAlert.getUtcExpireTime()));
LOG.error("UtcExpireTime="+ pushAlert.getUtcExpireTime());

// 1 bytes Priority
dataBao.write((byte)5);
dataBao.write(intTo2ByteArray(1));
dataBao.write((byte)10);


//Frame Info
bao = new ByteArrayOutputStream();
bao.write((byte)2);
byte [] data = dataBao.toByteArray();
bao.write(intTo4ByteArray(data.length));
LOG.error(" data.length "+data.length);
bao.write(data);

return bao.toByteArray();               
}


Support Methods
private static final byte[] intTo4ByteArray(int value) {
return ByteBuffer.allocate(4).putInt(value).array();
}

private static final byte[] intTo2ByteArray(int value) {
int s1 = (value & 0xFF00) >> 8;
    int s2 = value & 0xFF;
    return new byte[] { (byte) s1, (byte) s2 };
}

Answer 1

It looks like you are writing a single notification to bao, so why do you expect it to push multiple alerts? If you want to push multiple alerts, you have to repeat that sequence of bytes that you write into bao multiple times.