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This commit is contained in:
Alexander Zinn
2025-11-28 14:35:23 -05:00
parent eca9dfc631
commit 8fb108b04f
15 changed files with 3168 additions and 3166 deletions
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12
frontend-web-vanilla/src/PeerConnection.ts
View File

@@ -127,12 +127,14 @@ export default class PeerConnection implements IPeerConnectionOperations {
this._iceConnectionState.value = peerConnection.iceConnectionState;
};
this._disposables.add(new Disposable(() => {
this._disposables.add(
new Disposable(() => {
peerConnection.oniceconnectionstatechange = null;
peerConnection.onicegatheringstatechange = null;
peerConnection.onconnectionstatechange = null;
peerConnection.onsignalingstatechange = null;
}));
})
);
}
private setPeerConnectionEventListeners(peerConnection: RTCPeerConnection): void {
@@ -157,10 +159,12 @@ export default class PeerConnection implements IPeerConnectionOperations {
peerConnection.onicecandidate = iceCandidateHandler;
peerConnection.ontrack = trackHandler;
this._disposables.add(new Disposable(() => {
this._disposables.add(
new Disposable(() => {
peerConnection.onicecandidate = null;
peerConnection.ontrack = null;
}));
})
);
}
private initialize(): void {

8
frontend-web-vanilla/src/SignalingServer.ts
View File

@@ -1,6 +1,6 @@
import type { ICandidateMessage, IAnswerMessage, IOfferMessage, IMessage } from "./messaging/IMessage";
import { MessageKind } from "./messaging/MessageKind";
import type { ISignalingClient } from "./interfaces/ISignalingClient";
import type {ICandidateMessage, IAnswerMessage, IOfferMessage, IMessage} from './messaging/IMessage';
import {MessageKind} from './messaging/MessageKind';
import type {ISignalingClient} from './interfaces/ISignalingClient';
export default class SignalingServer implements ISignalingClient {
private readonly _webSocket: WebSocket;
@@ -10,7 +10,7 @@ export default class SignalingServer implements ISignalingClient {
}
public on<T>(kind: MessageKind, callback: (message: IMessage<T>) => Promise<void>): void {
this._webSocket.addEventListener('message', (event) => {
this._webSocket.addEventListener('message', event => {
const message = JSON.parse(event.data) as IMessage<T>;
if (message.type === kind) {

6
frontend-web-vanilla/src/User.ts
View File

@@ -1,8 +1,8 @@
import type {ILogger} from '@techniker-me/logger';
import {LoggerFactory} from '@techniker-me/logger';
import {ReadOnlySubject, Subject, type IEvent} from '@techniker-me/tools';
import type { IPeerConnectionOperations } from './interfaces/IPeerConnectionOperations';
import type { ISignalingClient } from './interfaces/ISignalingClient';
import type {IPeerConnectionOperations} from './interfaces/IPeerConnectionOperations';
import type {ISignalingClient} from './interfaces/ISignalingClient';
/**
* User class - manages local and remote media streams
@@ -39,7 +39,7 @@ export default class User {
}
public async startLocalMedia(): Promise<void> {
const mediaStream = await navigator.mediaDevices.getUserMedia({ audio: true, video: true });
const mediaStream = await navigator.mediaDevices.getUserMedia({audio: true, video: true});
this._peerConnection.addMediaStream(mediaStream);

36
frontend-web-vanilla/src/call/CallCoordinator.ts
View File

@@ -1,11 +1,11 @@
import { Caller } from './Caller';
import { Callee } from './Callee';
import type { ISignalingClient } from '../interfaces/ISignalingClient';
import type { IPeerConnectionOperations } from '../interfaces/IPeerConnectionOperations';
import { MessageKind } from '../messaging/MessageKind';
import type { IMessage } from '../messaging/IMessage';
import type { ILogger } from '@techniker-me/logger';
import { LoggerFactory } from '@techniker-me/logger';
import {Caller} from './Caller';
import {Callee} from './Callee';
import type {ISignalingClient} from '../interfaces/ISignalingClient';
import type {IPeerConnectionOperations} from '../interfaces/IPeerConnectionOperations';
import {MessageKind} from '../messaging/MessageKind';
import type {IMessage} from '../messaging/IMessage';
import type {ILogger} from '@techniker-me/logger';
import {LoggerFactory} from '@techniker-me/logger';
/**
* CallCoordinator - coordinates between Caller and Callee roles
@@ -20,10 +20,7 @@ export class CallCoordinator {
private readonly _peerConnection: IPeerConnectionOperations;
private _lastReceivedOffer: RTCSessionDescriptionInit | null = null;
constructor(
signalingClient: ISignalingClient,
peerConnection: IPeerConnectionOperations
) {
constructor(signalingClient: ISignalingClient, peerConnection: IPeerConnectionOperations) {
this._signalingClient = signalingClient;
this._peerConnection = peerConnection;
this._caller = new Caller(signalingClient, peerConnection);
@@ -81,9 +78,7 @@ export class CallCoordinator {
// Handle incoming offers (when acting as callee)
// Only set remote description - don't automatically create/send answer
// The answer will be sent when the user clicks the "Send Answer" button
this._signalingClient.on<RTCSessionDescriptionInit>(
MessageKind.Offer,
async (message: IMessage<RTCSessionDescriptionInit>) => {
this._signalingClient.on<RTCSessionDescriptionInit>(MessageKind.Offer, async (message: IMessage<RTCSessionDescriptionInit>) => {
// Only handle offer if we're not the caller (don't have local offer)
const currentState = this._peerConnection.getSignalingState();
if (currentState === 'have-local-offer' || currentState === 'have-local-pranswer') {
@@ -97,13 +92,10 @@ export class CallCoordinator {
// Only set the remote description - don't create/send answer yet
// This allows the callee to manually click "Send Answer" button
await this._peerConnection.setRemoteDescription(message.payload);
}
);
});
// Handle incoming answers (when acting as caller)
this._signalingClient.on<RTCSessionDescriptionInit>(
MessageKind.Answer,
async (message: IMessage<RTCSessionDescriptionInit>) => {
this._signalingClient.on<RTCSessionDescriptionInit>(MessageKind.Answer, async (message: IMessage<RTCSessionDescriptionInit>) => {
// Only handle answer if we're the caller (have local offer)
const currentState = this._peerConnection.getSignalingState();
if (currentState !== 'have-local-offer' && currentState !== 'have-local-pranswer') {
@@ -113,8 +105,6 @@ export class CallCoordinator {
this._logger.info('Received answer, acting as caller');
await this._caller.handleAnswer(message.payload);
}
);
});
}
}

14
frontend-web-vanilla/src/call/Callee.ts
View File

@@ -1,7 +1,7 @@
import type { ISignalingClient } from '../interfaces/ISignalingClient';
import type { IPeerConnectionOperations } from '../interfaces/IPeerConnectionOperations';
import type { ILogger } from '@techniker-me/logger';
import { LoggerFactory } from '@techniker-me/logger';
import type {ISignalingClient} from '../interfaces/ISignalingClient';
import type {IPeerConnectionOperations} from '../interfaces/IPeerConnectionOperations';
import type {ILogger} from '@techniker-me/logger';
import {LoggerFactory} from '@techniker-me/logger';
/**
* Callee class - responsible for receiving and responding to WebRTC calls
@@ -13,10 +13,7 @@ export class Callee {
private readonly _signalingClient: ISignalingClient;
private readonly _peerConnection: IPeerConnectionOperations;
constructor(
signalingClient: ISignalingClient,
peerConnection: IPeerConnectionOperations
) {
constructor(signalingClient: ISignalingClient, peerConnection: IPeerConnectionOperations) {
this._signalingClient = signalingClient;
this._peerConnection = peerConnection;
}
@@ -54,4 +51,3 @@ export class Callee {
}
}
}

14
frontend-web-vanilla/src/call/Caller.ts
View File

@@ -1,7 +1,7 @@
import type { ISignalingClient } from '../interfaces/ISignalingClient';
import type { IPeerConnectionOperations } from '../interfaces/IPeerConnectionOperations';
import type { ILogger } from '@techniker-me/logger';
import { LoggerFactory } from '@techniker-me/logger';
import type {ISignalingClient} from '../interfaces/ISignalingClient';
import type {IPeerConnectionOperations} from '../interfaces/IPeerConnectionOperations';
import type {ILogger} from '@techniker-me/logger';
import {LoggerFactory} from '@techniker-me/logger';
/**
* Caller class - responsible for initiating WebRTC calls
@@ -13,10 +13,7 @@ export class Caller {
private readonly _signalingClient: ISignalingClient;
private readonly _peerConnection: IPeerConnectionOperations;
constructor(
signalingClient: ISignalingClient,
peerConnection: IPeerConnectionOperations
) {
constructor(signalingClient: ISignalingClient, peerConnection: IPeerConnectionOperations) {
this._signalingClient = signalingClient;
this._peerConnection = peerConnection;
}
@@ -64,4 +61,3 @@ export class Caller {
}
}
}

3
frontend-web-vanilla/src/interfaces/IPeerConnectionOperations.ts
View File

@@ -1,4 +1,4 @@
import type { IEvent, IDisposable } from '@techniker-me/tools';
import type {IEvent, IDisposable} from '@techniker-me/tools';
/**
* Interface for peer connection operations
@@ -44,4 +44,3 @@ export interface IPeerConnectionOperations {
*/
on<T>(event: string, callback: (event: IEvent<T>) => void | Promise<void>): IDisposable;
}

5
frontend-web-vanilla/src/interfaces/ISignalingClient.ts
View File

@@ -1,5 +1,5 @@
import type { IMessage } from '../messaging/IMessage';
import { MessageKind } from '../messaging/MessageKind';
import type {IMessage} from '../messaging/IMessage';
import {MessageKind} from '../messaging/MessageKind';
/**
* Interface for signaling client operations
@@ -26,4 +26,3 @@ export interface ISignalingClient {
*/
sendCandidate(candidate: RTCIceCandidateInit): Promise<void>;
}

20
frontend-web-vanilla/src/main.ts
View File

@@ -1,10 +1,10 @@
import PeerConnection from './PeerConnection';
import User from './User';
import SignalingServer from './SignalingServer';
import { CallCoordinator } from './call/CallCoordinator';
import { MessageKind } from './messaging/MessageKind';
import type { IMessage } from './messaging/IMessage';
import type { ISignalingClient } from './interfaces/ISignalingClient';
import {CallCoordinator} from './call/CallCoordinator';
import {MessageKind} from './messaging/MessageKind';
import type {IMessage} from './messaging/IMessage';
import type {ISignalingClient} from './interfaces/ISignalingClient';
type Elements = {
localVideo: HTMLVideoElement;
@@ -16,7 +16,7 @@ type Elements = {
iceConnectionStateValue: HTMLSpanElement;
iceGatheringStateValue: HTMLSpanElement;
connectionStateValue: HTMLSpanElement;
}
};
const elements: Elements = {
localVideo: document.getElementById('local-video') as HTMLVideoElement,
@@ -28,7 +28,7 @@ const elements: Elements = {
iceConnectionStateValue: document.getElementById('ice-connection-state-value') as HTMLSpanElement,
iceGatheringStateValue: document.getElementById('ice-gathering-state-value') as HTMLSpanElement,
connectionStateValue: document.getElementById('connection-state-value') as HTMLSpanElement
}
};
// Initialize WebSocket and signaling server
const websocket = new WebSocket(`ws://${window.location.hostname}:3000/ws`);
@@ -57,7 +57,7 @@ signalingServer.on<RTCIceCandidateInit>(MessageKind.Candidate, async (message: I
});
// Setup UI state subscriptions
peerConnection.signalingState.subscribe((state) => {
peerConnection.signalingState.subscribe(state => {
elements.signalingStateValue.textContent = state;
// Enable send answer button when remote offer is received
@@ -68,15 +68,15 @@ peerConnection.signalingState.subscribe((state) => {
}
});
peerConnection.iceConnectionState.subscribe((state) => {
peerConnection.iceConnectionState.subscribe(state => {
elements.iceConnectionStateValue.textContent = state;
});
peerConnection.iceGatheringState.subscribe((state) => {
peerConnection.iceGatheringState.subscribe(state => {
elements.iceGatheringStateValue.textContent = state;
});
peerConnection.connectionState.subscribe((state) => {
peerConnection.connectionState.subscribe(state => {
elements.connectionStateValue.textContent = state;
});

7
frontend-web-vanilla/src/messaging/IMessage.ts
View File

@@ -5,20 +5,19 @@ export interface IMessage<T> {
payload: T;
}
export type IOfferMessage = {
type: 'offer';
payload: RTCSessionDescriptionInit;
}
};
export type IAnswerMessage = {
type: 'answer';
payload: RTCSessionDescriptionInit;
}
};
export type ICandidateMessage = {
type: 'candidate';
payload: RTCIceCandidateInit;
}
};
export type Message = IOfferMessage | IAnswerMessage | ICandidateMessage;

55
signaling/src/SignalingServer.ts
View File

@@ -1,15 +1,20 @@
import type { Server, ServerWebSocket } from "bun";
import {LoggerFactory, type ILogger} from '@techniker-me/logger';
import { LoggerFactory, type ILogger } from "@techniker-me/logger";
import { MessageKindMapping } from "./messaging/MessageKind";
export default class SignalingServer {
private readonly _logger: ILogger = LoggerFactory.getLogger('SignalingServer');
private readonly _logger: ILogger =
LoggerFactory.getLogger("SignalingServer");
private readonly _port: number;
private readonly _hostname: string;
private readonly _development: boolean;
private readonly _clients: Set<ServerWebSocket<undefined>> = new Set();
constructor(port: number, hostname: string = '0.0.0.0', development: boolean = false) {
constructor(
port: number,
hostname: string = "0.0.0.0",
development: boolean = false,
) {
this._port = port;
this._hostname = hostname;
this._development = development;
@@ -35,55 +40,67 @@ export default class SignalingServer {
drain: this.handleWebSocketDrain.bind(this),
error: this.handleWebSocketError.bind(this),
perMessageDeflate: true,
maxPayloadLength: 10 * 1024
maxPayloadLength: 10 * 1024,
};
}
get fetch() {
return (req: Request, server: Server<undefined>) => {
this._logger.info(`Fetch request received [${req.url}] from [${server.requestIP(req)?.address}:${server.requestIP(req)?.port}]`);
this._logger.info(
`Fetch request received [${req.url}] from [${server.requestIP(req)?.address}:${server.requestIP(req)?.port}]`,
);
const url = new URL(req.url);
if (url.pathname.endsWith('/ws')) {
this._logger.info('Upgrading to WebSocket');
server.upgrade(req)
if (url.pathname.endsWith("/ws")) {
this._logger.info("Upgrading to WebSocket");
server.upgrade(req);
return;
}
return new Response('Hello World');
return new Response("Hello World");
};
}
private handleWebSocketOpen(ws: ServerWebSocket<undefined>): void {
this._logger.info('WebSocket opened');
this._logger.info("WebSocket opened");
this._clients.add(ws);
}
private handleWebSocketMessage(ws: ServerWebSocket<undefined>, message: string | Buffer): void {
const messageString = typeof message === 'string' ? message : message.toString();
private handleWebSocketMessage(
ws: ServerWebSocket<undefined>,
message: string | Buffer,
): void {
const messageString =
typeof message === "string" ? message : message.toString();
const jsonMessage = JSON.parse(messageString);
this._logger.info(`WebSocket message received [${MessageKindMapping.convertMessageKindToMessageType(jsonMessage.type)}]`);
this._logger.info(
`WebSocket message received [${MessageKindMapping.convertMessageKindToMessageType(jsonMessage.type)}]`,
);
// Forward message to all other clients (following sequence diagram)
// This allows the signaling server to relay offers/answers between caller and callee
this._clients.forEach(client => {
if (client !== ws && client.readyState === 1) { // 1 = OPEN
this._clients.forEach((client) => {
if (client !== ws && client.readyState === 1) {
// 1 = OPEN
client.send(messageString);
}
});
}
private handleWebSocketClose(ws: ServerWebSocket<undefined>): void {
this._logger.info('WebSocket closed');
this._logger.info("WebSocket closed");
this._clients.delete(ws);
}
private handleWebSocketError(ws: ServerWebSocket<undefined>, error: Error): void {
this._logger.error('WebSocket error', error);
private handleWebSocketError(
ws: ServerWebSocket<undefined>,
error: Error,
): void {
this._logger.error("WebSocket error", error);
}
private handleWebSocketDrain(ws: ServerWebSocket<undefined>): void {
this._logger.info('WebSocket drained');
this._logger.info("WebSocket drained");
}
}

6
signaling/src/index.ts
View File

@@ -1,7 +1,9 @@
import SignalingServer from "./SignalingServer";
const signalingServer = new SignalingServer(3000, '0.0.0.0', true);
const signalingServer = new SignalingServer(3000, "0.0.0.0", true);
Bun.serve(signalingServer);
console.log(`Signaling server started on [${signalingServer.hostname}:${signalingServer.port}]`);
console.log(
`Signaling server started on [${signalingServer.hostname}:${signalingServer.port}]`,
);