Whatsapp Technical

A Seminar On

“ Technical Aspects of WhatsApp ”

BACHELOR OF ENGINEERING IN

COMPUTER SCIENCE & ENGINEERING

Presented By Akash R. Ghagare

Under the Guidance of Prof. Akhil M. Jaiswal

Department of Computer Science and Engineering

HVPM College of Engineering & Technology, Amravati

05/03/2023 Akash Ghagare, HVPM COET, Amravati 1

WhatsApp MessengerVersion 2.12.250

© 2010 – 2015 WhatsApp Inc.All rights reserved.

05/03/2023 Akash Ghagare, HVPM COET, Amravati 2

WhatsApp

Introduction of Earlier Communication

Features of WhatsApp

WhatsApp Web

Technical Aspects of WhatsApp

WhatsApp Media

Strategy On WhatsApp

Conclusion

KEY TERMS CONTENTS SLIDES

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Earlier Ways of CommunicationEarlier we were using• Letters• Calls• Email• Mails• Orkut• SMS• Facebook

Introduction of Earlier Communication

Problems :-• Delay Messages• High Cost• No Assurance of Deliver Messages• Travelling Energy to Deliver Message

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Solution on the Earlier Problem ?

The Solution is WhatsApp.

WhatsApp• WhatsApp Connects to the WorkGroups, Communities, Educational Purposes, Government Forums, Institutes & so on.• It is the perfect messaging app for Communication.• Quickly Connects with your Contacts.• There is no cost to messages


History of WhatsApp• Whats App Inc. was founded in 2009 by Americans Brian Acton and Jan Koum (also the CEO).• Both former employees of Yahoo!, and is based in Mountain View, California.• Whatsapp Inc., based in Mountain View, California, was acquired by Facebook on February 19, 2014, for approximately US$ 19 billion.• Whatsapp Android is not compatible with only Android, it is available for iOS, BlackBerry OS, Symbian and Windows Phone only.


About WhatsApp• Users can sends images• Video • Audio messages• Documents [In the form of Images]• WhatsApp Messenger is a proprietary & Cross-platform • Instant Messaging application for Smartphone's• WhatsApp software Available for Google Android• BlackBerry OS, Apple iOS, Nokia Series• Microsoft Windows Phone and BlackBerry 10


Feature of WhatsApp

• WhatsApp Adds Custom Contact • Group Notifications• No Login• BackUp Data

• Current Location & Available Voice Call• Add New Emoji with Different Color i.e 1157 Emojis• WhatsApp Web• Add Shortcut Conversion

• Mark As Unread• Support 10 Languages• Broadcast Message• Email Chat Conversion


Fig: XMPP Architecture

WhatsApp Emojis

& 966 more.


WhatsApp Web

• WhatsApp users can now continue their chats on their desktop PC.• WhatsApp Web basically mirrors the chats from your phone to your PC’s browser.• Multiple Task With WhatsApp Web

• You don’t need to download any apps or extensions to start using WhatsApp Web.

• Scan the QR & You can connect to more than one computers as well.


Fig: XMPP Architecture

WhatsApp Web


TECHNICAL ASPECTS• Few Technical Questions about Whats App -:

• Protocol used ? • Data Storage Files Formats ?

• Size of Media Messages & Calls

TECHNICAL ASPECTS


• WhatsApp uses XMPP (Extensible Messaging and Presence Protocol ).

• Whats App software automatically add contacts to the user's WhatsApp contact list.

• It enables the near-real-time exchange of structured yet extensible data between any two or more network entities.

• ID creation : During installation, take userid asE.g. ( Jabber ID: [phone number]@s.whatsapp.net)

• Jabber/XMPP is an open protocol - unlike a closed or proprietary network.

PROTOCOL USED ?

05/03/2023 Akash Ghagare,HVPM COET,Amravti 14Fig: XMPP Architecture

05/03/2023 Akash Ghagare,HVPM COET,Amravti 15Fig: Store & Forward Architecture

05/03/2023 Akash Ghagare,HVPM COET,Amravti 16Fig: Message Notification


• Gallery - You can long press to select multiple images. You can select up to 10 photos & 10 Videos per 16mb .

• Photo - Photo to use your camera to take a photo.

• Video - Video to use your camera to record a video.

• Audio - Audio to record or send an existing audio from your phone.• Location - Location to send your location or a nearby place• Contacts - Contact to send the information of a contact saved in your phone's address book over WhatsApp.

WhatsApp Media


WhatsApp Calls

• A minute of WhatsApp call costs around 0.15 MB to 0.20 MB of 3G data.

• on 2G, a minute of WhatsApp call costs around 0.35MB which is surprisingly higher than 3G.

• There is a Need of Active Data Connectivity in Both Sender & Receiver.

WhatsApp CALLS


STRATEGY ON WHATSAPP

• Phones are increasingly more about data than talking

• That data is getting faster

• There is always need for 1-to-1 communication

• World is getting smaller

• World is getting more visual

• Connect with the World


ADVANTAGE OF WHATSAPP• It helps you to block the users

• does not need any advertisements on display screen

• To spread public awareness schemes.

• No Fake Accounts

DISADVANTAGE OF WHATSAPP• Visible Phone Numbers on WhatsApp

• For harassing women mentally by posting or messaging unappropriate content.

• You may even have issues concentrating & socializing in real life.


CONCLUSION

WhatsApp is an Application which is used for Communication such as Sending Messages to other person, Sending Images, Videos, Documents as an Image Form. We can easily send enough unlimited messages to your Whatsapp friends, families, related Contacts, Forums, Educational Groups & So on.


Thank You !

Whatsapp Technical

Engineering

Transcript of Whatsapp Technical