Kako funkcionira WhatsApp?
Na YouTubeu postoji tehnički video koji je izradio Rick Reed, programer WhatsApp softvera o softverskoj infrastrukturi WhatsAppa. U osnovnoj logici, WhatsApp je softver za chat gdje možete komunicirati šifriranim vezama u pisanom, audio i video obliku u obliku osoba-osoba, osoba-više-osoba ili grupni chat. Kada se WhatsApp prvi put instalira na uređaj, on povezuje telefonski broj osobe i WhatsApp račun tako da je svaki broj registriran u sustavu kao korisnik. Budući da su telefonski brojevi jedinstveni u cijelom svijetu, tijekom faze registracije nije potrebna dodatna zaštita lozinkom.
Postupak verifikacije računa provodi se SMS-om koji se šalje na taj telefon. Kada vaš uređaj prvi put komunicira s WhatsApp poslužiteljima, token (sigurnosni token) jedinstven za vaš telefonski broj stvara se s SMS kodom za potvrdu koji primite. Program u svojoj infrastrukturi koristi prilagođeni XMPP protokol. Ovaj su protokol u prošlosti također koristili programi kao što su ICQ, AIM, Yahoo Chat i Google Talk. Kako bi automatski dodao kontakte na korisničku WhatsApp listu kontakata, WhatsApp automatski dohvaća sve telefonske brojeve iz adresara uređaja i uspoređuje ih sa središnjom WhatsApp korisničkom bazom podataka. Na taj način se mogu kontaktirati WhatsApp kontakti sa spremljenim telefonskim brojevima.
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