javascript - Chrome push notifications. Message identification -

while send notification client, have data:

$> curl --header "authorization: key=$key" --header content-type:"application/json" https://gcm-http.googleapis.com/gcm/send -d "{\"registration_ids\":[\"$subs\"]}"     {"multicast_id":5959734605210485936,"success":1,"failure":0,"canonical_ids":0,"results":[{"message_id":"0:1454898928592704%592683fbf9fd7ecd"}]} 

this multicast_id , message_id params.

my question is: how can 1 of (or both) these params serviceworker script?

self.addeventlistener('push', function (event) {   ...   // need that:   msgid = event.message_id;   m_castid = event.multicast_id;   ... }); 

in other words, need of possible way determine message inside serviceworker script.

thanks in advance,

with best regards,

nikolai

solved!

i don`t know how message id, found how identify subscription:

self.addeventlistener('push', function (event) {     ...     self.registration.pushmanager       .getsubscription()       .then( function( subscription )      {         var registrationid = subscription.endpoint.split('/');         registrationid = registrationid[ registrationid.length - 1 ];         ...     });     ... }); 

may useful somebody.