desk2/server/enums.js

export const SESSION = Object.freeze({
    OPENED: 0, // nothing sent/recved yet
    READY: 1,  // init complete
    CLOSED: 2, // socket closed, but we might continute this same session on another socket
});

export const EVENT = Object.freeze({
    PREDRAW: 10,
    SET_COLOR: 11,
    SET_WIDTH: 12,
    CLEAR: 13,
    MOVE_CURSOR: 14,
        LIFT: 15,

    LEAVE: 16,
    MOVE_CANVAS: 17,
    USER_JOINED: 18,
    ZOOM_CANVAS: 19,

    STROKE: 20,
    UNDO: 30,
    REDO: 31,
    IMAGE: 40,
    IMAGE_MOVE: 41,
    IMAGE_SCALE: 42,
    ERASER: 50,
});

export const MESSAGE = Object.freeze({
    INIT: 100,
    SYN: 101,
    ACK: 102,
    FULL: 103,
    FIRE: 104,
    JOIN: 105,
    FOLLOW: 106,
});