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I have been trying to inspect the whatsapp messages. I know Web WhatsApp uses the WebSockets. I can see some of data. But when I send message it just comes up with Binary coded data. It doesn't send XHR request. Then how does it sends message ?

Screenshot : http://prntscr.com/c91yx5

Thank you!

Disha Shukla
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  • They probably use GCM or Firebase, I don't know much about them but they're a good place to start. – CookieMonster Aug 22 '16 at 20:31
  • But how it's sending the message ? I mean in what type of request ? @CookieMonster – Disha Shukla Aug 23 '16 at 03:35
  • Maybe this helps: "How does facebook, gmail send the real time notification?" https://stackoverflow.com/q/1086380/1066234 I also see "serviceworker.js" in the Developer console when using Whatsapp. – Avatar Dec 19 '22 at 06:46

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