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@@ -3,8 +3,9 @@ import { createServer } from 'http';
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import { Server, Socket as SocketForConnectedClient } from 'socket.io';
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import { io, Socket as ClientSocket } from 'socket.io-client';
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import * as fs from 'fs'
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-import { ReceiverProfile, TransportEventNotification, TransportMessage } from '../interface/ITransport.interface';
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import { v4 as uuidv4 } from 'uuid'
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+import { TransportEvent } from '../interface/connector.interface';
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+import { ConnectedClientSocket, ConnectedServerSocket } from '../transport/websocket';
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export function startSocketServer(port: number): Observable<SocketForConnectedClient> {
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return new Observable((observer) => {
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@@ -36,7 +37,7 @@ export async function startClientSocketConnection(serverUrl: string): Promise<Cl
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return new Promise((resolve, reject) => {
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try {
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// let clientSocket = io(serverUrl)
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- let clientSocket = io(serverUrl, {
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+ let clientSocket: ClientSocket = io(serverUrl, {
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reconnection: true, // Enable automatic reconnections
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reconnectionAttempts: 1000, // Retry up to 10 times
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reconnectionDelay: 500, // Start with a 500ms delay
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@@ -52,17 +53,22 @@ export async function startClientSocketConnection(serverUrl: string): Promise<Cl
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}
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// After establishing connection to the server, set up the credentials, confirm whether or not if there's any credentials, if not ask for one from the server
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-export function handleClientSocketConnection(socket: ClientSocket): Observable<TransportEventNotification> {
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- return new Observable((eventNotification: Observer<TransportEventNotification>) => {
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+export function handleClientSocketConnection(socket: ClientSocket, serversConnected: ConnectedServerSocket[]): Observable<TransportEvent> {
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+ return new Observable((eventNotification: Observer<TransportEvent>) => {
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let clientName!: string
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let buffer: any[] = []
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- let receiverProfileInfo!: ReceiverProfile
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+ let receiverProfileInfo!: ConnectedClientSocket
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// Listen for a connection event
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socket.on('connect', () => {
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console.log('Connected to the server:', socket.id)
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+ serversConnected.push({
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+ id: uuidv4(),
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+ dateCreated: new Date(),
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+ socketInstance: socket
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+ })
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if (clientName) {
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- checkOwnClientInfo(clientName).then((profile: ReceiverProfile) => {
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+ checkOwnClientInfo(clientName).then((profile: ConnectedClientSocket) => {
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receiverProfileInfo = profile
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socket.emit('profile', {
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name: 'Old Client',
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@@ -86,23 +92,7 @@ export function handleClientSocketConnection(socket: ClientSocket): Observable<T
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socket.on('message', (msg: any) => {
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console.log(`Websocket Client Transport Receieve Msg`, msg.id)
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if (receiverProfileInfo) {
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- eventNotification.next({
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- event: 'New Message',
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- description: 'Received new message',
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- transportType: 'WEBSOCKET',
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- data: {
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- receiverID: receiverProfileInfo.uuid,
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- receiverName: receiverProfileInfo.name,
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- date: new Date(),
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- payload: msg
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- }
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- })
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- // incomingMessage.next({
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- // id: msg.header.MessageID,
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- // receiverID: receiverProfileInfo.uuid,
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- // payload: msg,
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- // event: 'New Message'
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- // })
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+ // publish to event
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} else {
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// Do nothing. just store in local array first. Cannot process without information. but then again, don['t need information if acting as client
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// but for consistency sake, will impose the standard
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@@ -113,33 +103,23 @@ export function handleClientSocketConnection(socket: ClientSocket): Observable<T
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socket.on('profile', (data: { name: string, message: any }) => {
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// console.log(data)
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if (data.name == 'New Profile') {
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- console.log(`Assigned client Name: ${(data.message as ReceiverProfile).name}`)
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- receiverProfileInfo = data.message as ReceiverProfile
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- writeFile(data.message as ReceiverProfile, (data.message as ReceiverProfile).name).then(() => {
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- clientName = receiverProfileInfo.name
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+ console.log(`Assigned client Name: ${(data.message as ConnectedClientSocket).id}`)
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+ receiverProfileInfo = data.message as ConnectedClientSocket
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+ writeFile(data.message as ConnectedClientSocket, (data.message as ConnectedClientSocket).id).then(() => {
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+ clientName = receiverProfileInfo.id
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// broadcast event to allow retransmission to release buffer
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- eventNotification.next({
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- event: 'Connection',
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- description: 'Profile acquired || updated and stored',
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- transportType: 'WEBSOCKET',
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- data: {
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- receiverID: receiverProfileInfo.uuid,
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- receiverName: receiverProfileInfo.name,
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- date: new Date(),
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- payload: receiverProfileInfo
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- }
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- })
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+
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}).catch((error) => { }) // do nothing at the moment.
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}
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if (data.name == 'Adjusted Profile') {
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- console.log(`Assigned client Name: ${(data.message as ReceiverProfile).name}`)
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- receiverProfileInfo = data.message as ReceiverProfile
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- writeFile(data.message as ReceiverProfile, (data.message as ReceiverProfile).name).then(() => {
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+ console.log(`Assigned client Name: ${(data.message as ConnectedClientSocket).id}`)
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+ receiverProfileInfo = data.message as ConnectedClientSocket
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+ writeFile(data.message as ConnectedClientSocket, (data.message as ConnectedClientSocket).id).then(() => {
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// broadcast event to allow retransmission to release buffer
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eventNotification.next({
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- event: 'Connection',
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- description: 'Profile acquired || updated and stored',
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- transportType: 'WEBSOCKET',
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+ id: uuidv4(),
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+ event: 'Client Reconnected',
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+ data: ''
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})
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}).catch((error) => { }) // do nothing at the moment.
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}
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@@ -160,9 +140,9 @@ export function handleClientSocketConnection(socket: ClientSocket): Observable<T
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console.log('Websocket Client disconnected from the server');
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if (receiverProfileInfo) {
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eventNotification.next({
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- event: 'Disconnection',
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- description: 'Disconnected from the server',
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- transportType: 'WEBSOCKET'
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+ id: uuidv4(),
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+ event: `Client Disconnected`,
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+ data: ''
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})
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}
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});
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@@ -170,55 +150,39 @@ export function handleClientSocketConnection(socket: ClientSocket): Observable<T
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}
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// For SERVER Usage: set up socket listeners to start listening for different events
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-export function handleNewSocketClient(socket: SocketForConnectedClient, socketReceiverProfile: ReceiverProfile[]): Observable<TransportEventNotification> {
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- return new Observable((event: Observer<TransportEventNotification>) => {
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+export function handleNewSocketClient(socket: SocketForConnectedClient, connectedClientSocket: ConnectedClientSocket[]): Observable<TransportEvent> {
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+ return new Observable((event: Observer<TransportEvent>) => {
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console.log(`Setting up listeners for socket:${socket.id}`)
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// returns the socket client instance
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// listen to receiver's initiotion first before assigning 'credentials'
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- socket.on(`profile`, (message: { name: string, data: ReceiverProfile }) => {
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+ socket.on(`profile`, (message: { name: string, data: any }) => {
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if (message.name == 'New Client') {
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- let receiverProfile: ReceiverProfile = {
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- uuid: uuidv4(),
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- name: `Client${uuidv4()}`,
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+ let clientInstance: ConnectedClientSocket = {
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+ id: uuidv4(),
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dateCreated: new Date(),
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- transportType: `WEBSOCKET`,
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- eventNotification: new Subject(),
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- instance: socket
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+ socketInstance: socket
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}
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// publish first event notification
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event.next({
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- event: 'Connection',
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- description: 'New Client Connected',
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- transportType: 'WEBSOCKET',
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- data: {
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- receiverID: receiverProfile.uuid,
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- receiverName: receiverProfile.name,
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- date: new Date(),
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- payload: receiverProfile
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- }
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+ id: uuidv4(),
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+ event: `New Client`,
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+ data: clientInstance
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})
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// send to receiver for reference
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socket.emit('profile', {
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- name: `New Profile`, message: {
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- uuid: receiverProfile.uuid,
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- name: receiverProfile.name,
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- dateCreated: receiverProfile.dateCreated,
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- transportType: `WEBSOCKET`,
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- eventNotification: null,
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- instance: null // have to put null, otherwise circular reference maximum stack error
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- }
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+ name: `New Profile`, message: clientInstance
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})
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- socketReceiverProfile.push(receiverProfile)
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- startListening(socket, receiverProfile)
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+ // Update connected clientInstance info to adapter
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+ connectedClientSocket.push(clientInstance)
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+ startListening(socket, clientInstance, event)
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} else {
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// update first
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- let receiverProfile: ReceiverProfile | undefined = socketReceiverProfile.find(obj => obj.uuid === message.data.uuid)
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- if (receiverProfile) {
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- console.log(`Profile ${receiverProfile.uuid} Found`)
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- receiverProfile.instance = socket
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- socket.emit('profile', { name: 'Adjusted Profile', message: receiverProfile })
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+ let clientInstance: ConnectedClientSocket | undefined = connectedClientSocket.find(obj => obj.id === message.data.id)
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+ if (clientInstance) {
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+ console.log(`Socket Client ${clientInstance.id} Found`)
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+ socket.emit('profile', { name: 'Adjusted Profile', message: clientInstance })
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// need to start listening again, because it's assigned a different socket instance this time round
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- startListening(socket, receiverProfile)
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+ startListening(socket, clientInstance, event)
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} else {
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console.log(`Profile Not Found`)
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socket.emit('profile', { name: 'Error', message: 'Receiver Profile Not found' })
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@@ -230,7 +194,7 @@ export function handleNewSocketClient(socket: SocketForConnectedClient, socketRe
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// Specifically to write receiver profile information
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-export async function writeFile(data: ReceiverProfile, filename: string): Promise<boolean> {
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+export async function writeFile(data: ConnectedClientSocket, filename: string): Promise<boolean> {
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return new Promise((resolve, reject) => {
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// Write JSON data to a file
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fs.writeFile(`${filename}.json`, JSON.stringify(data, null, 2), (err) => {
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@@ -248,7 +212,7 @@ export async function writeFile(data: ReceiverProfile, filename: string): Promis
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// Check if filename exists. Return profile information if there's any
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-export async function checkOwnClientInfo(filename: string): Promise<ReceiverProfile> {
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+export async function checkOwnClientInfo(filename: string): Promise<ConnectedClientSocket> {
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return new Promise((resolve, reject) => {
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// Check if the file exists
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if (fs.existsSync(`${filename}.json`)) {
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@@ -277,43 +241,58 @@ export async function checkOwnClientInfo(filename: string): Promise<ReceiverProf
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})
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}
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-export function startListening(socket: SocketForConnectedClient, receiverProfile: ReceiverProfile): void {
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+export function startListening(socket: SocketForConnectedClient, client: ConnectedClientSocket, eventListener: Observer<TransportEvent>): void {
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/* Generally, we don't need this unless in the case of being the receiver */
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socket.on('message', (message: any) => {
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- // here
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+ eventListener.next({
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+ id: uuidv4(),
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+ event: 'New Message',
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+ data: {
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+ clientID: client.id,
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+ dateReceived: new Date(),
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+ payload: message
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+ }
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+ })
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})
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- socket.on('request', (request: any) => {
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+ socket.on('request', (message: any) => {
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// here : Let's say there's a subcsription request here
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- receiverProfile.eventNotification.next({
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+ eventListener.next({
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+ id: uuidv4(),
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event: 'New Message',
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- description: 'Incoming request',
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- transportType: 'WEBSOCKET',
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data: {
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- receiverID: receiverProfile.uuid,
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- receiverName: receiverProfile.name,
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- date: new Date(),
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- payload: request
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+ clientID: client.id,
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+ dateReceived: new Date(),
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+ payload: message
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}
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})
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})
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socket.on('notification', (notification: any) => {
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// logic here
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+ eventListener.next({
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+ id: uuidv4(),
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+ event: `Notification`,
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+ data: {
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+ clientID: client.id,
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+ dateReceived: new Date(),
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+ payload: notification
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+ }
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+ })
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})
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socket.on('disconnect', () => {
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- receiverProfile.eventNotification.next(
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- {
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- event: 'Disconnection',
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- description: `Existing Client ${receiverProfile.uuid} disonnected`,
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- transportType: `WEBSOCKET`,
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- data: {
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- receiverID: receiverProfile.uuid,
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- receiverName: receiverProfile.name,
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- date: new Date(),
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- }
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+ eventListener.next({
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+ id: uuidv4(),
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+ event: 'Server Disconnected',
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+ data: {
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+ clientID: client.id,
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+ time: new Date()
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}
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- )
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+ })
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+ eventListener.error(`Client ${client.id} disconnected. Terminating this observable event for this client socket...`)
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+ eventListener.complete()
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})
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-}
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+}
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+
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+
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