asepharyana
2203dd5771
Phase 0 of GoLive rewrite (drop @dank074/node-datachannel 771MB): minimal N-API binding exposing PeerConnection/DataChannel/ICE/SDP, built against libdatachannel 0.24.0 (from node-datachannel _deps source). Verified: offer/answer/ICE/DataChannel roundtrip between two local peers (test-handshake.js). Key findings: - callbacks must be registered in ctor BEFORE createDataChannel - SDP with candidates comes from localDescription() at gathering Complete - answer auto-generates on setRemoteDescription(offer); do NOT call setLocalDescription() after or role=actpass breaks the peer
83 lines
2.3 KiB
JavaScript
83 lines
2.3 KiB
JavaScript
// Phase 0 spike: prove the minimal binding can do a full WebRTC handshake
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// (offer/answer + ICE + DataChannel) between two local PeerConnections.
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"use strict";
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const { PeerConnection } = require("./build/Release/datachannel_min.node");
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function log(...args) {
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console.log("[spike]", ...args);
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}
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async function main() {
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const pcA = new PeerConnection({ iceServers: [] });
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const pcB = new PeerConnection({ iceServers: [] });
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const stateLog = [];
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pcA.onStateChange((s) => {
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stateLog.push(`A:${s}`);
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log("A state:", s);
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});
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pcB.onStateChange((s) => {
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stateLog.push(`B:${s}`);
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log("B state:", s);
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});
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// B waits for incoming DataChannel
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const received = new Promise((resolve) => {
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pcB.onDataChannel((dc) => {
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log("B got incoming DataChannel");
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dc.onOpen(() => log("B DataChannel open"));
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dc.onMessage((msg) => {
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log("B received message:", msg);
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dc.send("pong from B");
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resolve(msg);
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});
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});
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});
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// A creates an outgoing DataChannel
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const dcA = pcA.createDataChannel("test");
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dcA.onOpen(() => {
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log("A DataChannel open — sending hello");
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dcA.send("hello from A");
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});
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dcA.onMessage((msg) => {
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log("A received reply:", msg);
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});
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// Offer/answer dance
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log("A createOffer...");
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const offer = await pcA.createOffer();
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log("Offer SDP bytes:", offer.length);
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log("B createAnswer...");
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const answer = await pcB.createAnswer(offer);
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log("Answer SDP bytes:", answer.length);
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const setupMatch = answer.match(/a=setup:(\S+)/);
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log("Answer setup role:", setupMatch ? setupMatch[1] : "NONE");
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pcA.setRemoteDescription(answer, "answer");
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// Wait for message roundtrip
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const msg = await Promise.race([
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received,
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new Promise((_, rej) => setTimeout(() => rej(new Error("TIMEOUT waiting for datachannel message")), 15000)),
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]);
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log("ROUNDTRIP OK — B got:", msg);
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log("States:", stateLog.join(" | "));
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const aState = pcA.state();
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const bState = pcB.state();
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log("Final states — A:", aState, "B:", bState);
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pcA.close();
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pcB.close();
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if (msg !== "hello from A") throw new Error("wrong message");
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if (aState !== "connected" && aState !== "disconnected") throw new Error("A not connected: " + aState);
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log("SPIKE PASSED ✅");
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}
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main().catch((e) => {
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console.error("SPIKE FAILED:", e.message);
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process.exit(1);
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});
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