128 lines
3.7 KiB
TypeScript
128 lines
3.7 KiB
TypeScript
import { RemoteInfo } from "dgram";
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import { readFileSync } from "node:fs";
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import http from "node:http";
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import { opt } from "./options.js";
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import { discoverDevices } from "./discovery.js";
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import { DevSerial } from "./impl.js";
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import { Handlers, makeSession, Session, startVideoStream } from "./session.js";
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let BOUNDARY = "a very good boundary line";
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let responses: Record<string, http.ServerResponse[]> = {};
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let audioResponses: Record<string, http.ServerResponse[]> = {};
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let sessions: Record<string, Session> = {};
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export const serveHttp = (opts: opt, port: number, with_audio: boolean) => {
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const server = http.createServer((req, res) => {
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if (req.url.startsWith("/ui/")) {
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let devId = req.url.split("/")[2];
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let s = sessions[devId];
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if (s === undefined) {
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res.writeHead(400);
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res.end("invalid ID");
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return;
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}
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if (!s.connected) {
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res.writeHead(400);
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res.end("Nothing online");
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return;
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}
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const ui = readFileSync("asd.html").toString();
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res.end(ui.replace(/\${id}/g, devId));
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return;
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}
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if (req.url.startsWith("/audio/")) {
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let devId = req.url.split("/")[2];
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let s = sessions[devId];
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if (s === undefined) {
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res.writeHead(400);
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res.end("invalid ID");
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return;
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}
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if (!s.connected) {
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res.writeHead(400);
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res.end("Nothing online");
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return;
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}
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res.setHeader("Content-Type", `text/event-stream`);
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audioResponses[devId].push(res);
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return;
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}
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if (req.url.startsWith("/camera/")) {
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let devId = req.url.split("/")[2];
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console.log("requested for", devId);
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let s = sessions[devId];
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if (s === undefined) {
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res.writeHead(400);
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res.end("invalid ID");
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return;
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}
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if (!s.connected) {
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res.writeHead(400);
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res.end("Nothing online");
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return;
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}
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res.setHeader("Content-Type", `multipart/x-mixed-replace; boundary="${BOUNDARY}"`);
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responses[devId].push(res);
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res.on("close", () => {
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responses[devId] = responses[devId].filter((r) => r !== res);
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console.log("Conn closed, kicked");
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});
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} else {
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res.write(`<html>`);
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Object.keys(sessions).forEach((id) =>
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res.write(`<h2>${id}</h2><a href="/ui/${id}"><img src="/camera/${id}"/></a><hr/>`),
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);
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res.write(`</html>`);
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res.end();
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}
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});
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let devEv = discoverDevices(opts.debug, opts.discovery_ip);
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devEv.on("discover", (rinfo: RemoteInfo, dev: DevSerial) => {
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if (dev.devId in sessions) {
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console.log(`ignoring ${dev.devId} - ${rinfo.address}`);
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return;
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}
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console.log(`discovered ${dev.devId} - ${rinfo.address}`);
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responses[dev.devId] = [];
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audioResponses[dev.devId] = [];
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const s = makeSession(Handlers, dev, rinfo, startVideoStream, opts);
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const header = Buffer.from(`--${BOUNDARY}\r\nContent-Type: image/jpeg\r\n\r\n`);
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s.eventEmitter.on("frame", () => {
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const assembled = Buffer.concat(s.curImage);
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responses[dev.devId].forEach((res) => {
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res.write(header);
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res.write(assembled);
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});
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});
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s.eventEmitter.on("disconnect", () => {
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console.log("deleting from sessions");
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delete sessions[dev.devId];
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});
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if (with_audio) {
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s.eventEmitter.on("audio", ({ gap, data }) => {
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// ew, maybe WS?
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var b64encoded = Buffer.from(data).toString("base64");
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audioResponses[dev.devId].forEach((res) => {
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res.write("data: ");
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res.write(b64encoded);
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res.write("\n\n");
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});
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});
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}
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sessions[dev.devId] = s;
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});
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console.log(`Starting HTTP server on port ${port}`);
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server.listen(port);
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};
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