Whiteboard Protocol - Group F

The Whiteboard Protocol is a communication protocol designed for collaborative whiteboard applications. It facilitates real-time drawing, annotation, and interaction between multiple clients connected to a shared whiteboard server.

Overview

The Whiteboard Protocol defines a set of rules and conventions for exchanging messages between clients and the server. It enables clients to:

• Draw shapes and lines on the whiteboard.
• Add text annotations.
• Select, move, and resize objects.
• Undo and redo actions.
• Collaborate with other users in real-time.
• The protocol is built on top of Google's Protocol Buffers (protobuf), providing efficient serialization and deserialization of messages over the network.

Base

Element.hpp

Define WhiteboardElement class for standard APIs for creating and parsing Element.

Element type	Create method	To protobuf	Print	Test
Path	✅	✅	✅	✅
Line	✅	✅	✅	✅
Circle	✅	✅	✅	✅
Triangle	✅	✅	✅	✅
Square	✅	✅	✅	✅
Text	✅	✅	✅	✅
Picture
StickyNote	✅	✅	✅	✅
Null			✅	✅

Action

Action	Server logic	Client logic	Packet logic	Test
createWhiteboard	✅	✅	✅
createSession	✅	✅	✅
JoinSession	✅	✅	✅
quitSession	✅	✅	✅
addElement
modifyElement
deleteElement
login	✅	✅	✅
register	✅	✅	✅
saveWhiteboard
actionResponse
broadcast
tempIdResponse	✅	✅

Todo list

• [] Register same username
• [] Join/Quit session, loggin and anonymous user management
• []