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Getting timestamp from incoming xmpp message

Anonymous User 6014 16-Jun-2015

I am using aSmack library to communicate with remote xmpp server. I am able to send/receive messages, but I want to get timestamp of incoming message.

Could you tell me please, is it possible at all? 

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Updated on 17-Jun-2015
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1 Answers

Anonymous User

Anonymous User

17-Jun-2015
Where the Timestamp is not part of the regular messages. Therefore you cannot extract it. There is a spec (as mentioned by @Dmitry), but this only applies to specific types of messages.
Typically those that are NOT realtime, such as offline and publishing the last pubsub message of a node when a new subscription is created.
These are messages with an inherent delay built into the Due to specs time is the required attribute for XMPP message:

http://xmpp.org/extensions/xep-0203.html#protocol

Check the <delay> item of <message>:

<delay xmlns='urn:xmpp:delay'
 from='capulet.com'
 stamp='2002-09-10T23:08:25Z'>
Offline Storage
</delay> 
But getting it looks a bit tricky. As soon as aSmack is recompiled Smack with some replaced stuff, so try to get it the way like here:

DelayInformation inf = null;
try {
    inf = (DelayInformation)packet.getExtension("x","jabber:x:delay");
} catch (Exception e) {
    log.error(e);
}
// get offline message timestamp
if(inf!=null)
    Date date = inf.getStamp();

Probably, you will need to check what server sends with a message as extension value and replace "jabber:x: delay" with 'urn:XMPP: delay' as it is shown in XMPP specs example.

But not sure if it works.
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