this is a pain in the ass

2025-06-23 15:33:04 -04:00
parent 59aa904c5a
commit aa938f7258
6 changed files with 377 additions and 20 deletions
--- a/lib/RTCPeer.ts
+++ b/lib/RTCPeer.ts
@@ -0,0 +1,131 @@
+const servers = {
+	iceServers: [
+		{ url: 'stun:stun01.sipphone.com' },
+		{ url: 'stun:stun.ekiga.net' },
+		{ url: 'stun:stun.fwdnet.net' },
+		{ url: 'stun:stun.ideasip.com' },
+		{ url: 'stun:stun.iptel.org' },
+		{ url: 'stun:stun.rixtelecom.se' },
+		{ url: 'stun:stun.schlund.de' },
+		{ url: 'stun:stun.l.google.com:19302' },
+		{ url: 'stun:stun1.l.google.com:19302' },
+		{ url: 'stun:stun2.l.google.com:19302' },
+		{ url: 'stun:stun3.l.google.com:19302' },
+		{ url: 'stun:stun4.l.google.com:19302' },
+		{ url: 'stun:stunserver.org' },
+		{ url: 'stun:stun.softjoys.com' },
+		{ url: 'stun:stun.voiparound.com' },
+		{ url: 'stun:stun.voipbuster.com' },
+		{ url: 'stun:stun.voipstunt.com' },
+		{ url: 'stun:stun.voxgratia.org' },
+		{ url: 'stun:stun.xten.com' },
+
+		// {
+		//     url: 'turn:numb.viagenie.ca',
+		//     credential: 'muazkh',
+		//     username: 'webrtc@live.com',
+		// },
+		// {
+		//     url: 'turn:192.158.29.39:3478?transport=udp',
+		//     credential: 'JZEOEt2V3Qb0y27GRntt2u2PAYA=',
+		//     username: '28224511:1379330808',
+		// },
+		// {
+		//     url: 'turn:192.158.29.39:3478?transport=tcp',
+		//     credential: 'JZEOEt2V3Qb0y27GRntt2u2PAYA=',
+		//     username: '28224511:1379330808',
+		// },
+	],
+};
+
+const pcConstraints = {
+	optional: [{ DtlsSrtpKeyAgreement: true }],
+};
+
+export interface RTCPeerProps {
+	channelName: string;
+	offer?: RTCSessionDescriptionInit;
+	sendAnswer: (offer: RTCSessionDescriptionInit) => void;
+	sendOffer: (offer: RTCSessionDescriptionInit) => void;
+}
+
+export default class RTCPeer {
+	channelName: string;
+	peerConnection: RTCPeerConnection;
+	channel: RTCDataChannel;
+
+	sendAnswer: (offer: RTCSessionDescriptionInit) => void;
+	sendOffer: (offer: RTCSessionDescriptionInit) => void;
+
+	constructor({ channelName, offer, sendAnswer, sendOffer }: RTCPeerProps) {
+		this.sendOffer = sendOffer;
+		this.sendAnswer = sendAnswer;
+		this.channelName = channelName;
+
+		this.peerConnection = new RTCPeerConnection(); //(servers, pcConstraints);
+		this.peerConnection.onicecandidate = offer
+			? this.#handleIceCandidateAnswer
+			: this.#handleIceCandidateOffer;
+
+		this.#createDataChannel();
+
+		if (offer) {
+			console.log('answer');
+			this.peerConnection.setRemoteDescription(offer);
+			this.peerConnection.createAnswer().then((answer) => {
+				this.peerConnection.setLocalDescription(answer);
+			});
+		} else {
+			console.log('call');
+			this.peerConnection.createOffer().then((offer) => {
+				this.peerConnection.setLocalDescription(offer);
+			});
+		}
+	}
+
+	onAnswer = (answer: RTCSessionDescriptionInit) => {
+		this.peerConnection.setRemoteDescription(answer);
+	};
+
+	#handleIceCandidateAnswer = (event: RTCPeerConnectionIceEvent) => {
+		if (!event.candidate) {
+			const answer = this.peerConnection.localDescription;
+
+			console.log('send-answer', { answer });
+			if (answer) {
+				this.sendAnswer(answer);
+			}
+		}
+	};
+
+	#handleIceCandidateOffer = (event: RTCPeerConnectionIceEvent) => {
+		if (!event.candidate) {
+			const offer = this.peerConnection.localDescription;
+
+			if (offer) {
+				console.log('send-offer', { offer });
+				this.sendOffer(offer);
+			}
+		}
+	};
+
+	#createDataChannel = () => {
+		try {
+			this.channel = this.peerConnection.createDataChannel(this.channelName);
+
+			this.channel.onopen = () => {
+				console.log('Receive Channel[onopen]:', this.channel.readyState);
+			};
+
+			this.channel.onmessage = (event: MessageEvent) => {
+				console.log('Receive Channel[onmessage]:', event.data);
+			};
+
+			this.channel.onclose = () => {
+				console.log('Receive Channel[onclose]:', this.channel.readyState);
+			};
+		} catch (error) {
+			console.error('[RTCPeer|#createDataChannel] ERROR', error);
+		}
+	};
+}