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stream: improve shutdown handling, minor clean up

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- try to close as many things as possible when shutting down

- remove redundant (e.g. `exit` on process when
  listening for `close`) and straight up useless
  (`disconnect`) event listeners
This commit is contained in:
dumbmoron 2023-10-19 20:36:05 +00:00
parent 73d84c09d3
commit cae4a68aa4
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GPG key ID: C59997C76C6A8E5F
2 changed files with 58 additions and 73 deletions
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1
package.json
View file

@ -25,6 +25,7 @@
},
"homepage": "https://github.com/wukko/cobalt#readme",
"dependencies": {
"abort-controller": "3.0.0",
"content-disposition-header": "0.6.0",
"cors": "^2.8.5",
"dotenv": "^16.0.1",

130
src/modules/stream/types.js
View file

@ -2,40 +2,48 @@ import { spawn } from "child_process";
import ffmpeg from "ffmpeg-static";
import { ffmpegArgs, genericUserAgent } from "../config.js";
import { getThreads, metadataManager } from "../sub/utils.js";
import { request } from 'undici';
import { request } from "undici";
import { create as contentDisposition } from "content-disposition-header";
import { AbortController } from "abort-controller"
function fail(res) {
function closeResponse(res) {
if (!res.headersSent) res.sendStatus(500);
return res.destroy();
}
export async function streamDefault(streamInfo, res) {
const abortController = new AbortController();
const shutdown = () => (abortController.abort(), closeResponse(res));
try {
let format = streamInfo.filename.split('.')[streamInfo.filename.split('.').length - 1];
res.setHeader('Content-disposition', contentDisposition(streamInfo.isAudioOnly ? `${streamInfo.filename}.${streamInfo.audioFormat}` : streamInfo.filename));
const filename = streamInfo.isAudioOnly ? `${streamInfo.filename}.${streamInfo.audioFormat}` : streamInfo.filename;
res.setHeader('Content-disposition', contentDisposition(filename));
const { body: stream, headers } = await request(streamInfo.urls, {
headers: { 'user-agent': genericUserAgent },
signal: abortController.signal,
maxRedirections: 16
});
res.setHeader('content-type', headers['content-type']);
res.setHeader('content-length', headers['content-length']);
stream.pipe(res).on('error', () => fail(res));
stream.on('error', () => fail(res));
stream.on('aborted', () => fail(res));
} catch (e) {
fail(res);
stream.on('error', shutdown)
.pipe(res).on('error', shutdown);
} catch {
shutdown();
}
}
export async function streamLiveRender(streamInfo, res) {
try {
if (streamInfo.urls.length !== 2) return fail(res);
let { body: audio } = await request(streamInfo.urls[1], {
maxRedirections: 16
export async function streamLiveRender(streamInfo, res) {
let abortController = new AbortController(), process;
const shutdown = () => (abortController.abort(), process?.kill(), closeResponse(res));
try {
if (streamInfo.urls.length !== 2) return shutdown();
const { body: audio } = await request(streamInfo.urls[1], {
maxRedirections: 16, signal: abortController.signal
});
let format = streamInfo.filename.split('.')[streamInfo.filename.split('.').length - 1],
@ -51,58 +59,41 @@ export async function streamLiveRender(streamInfo, res) {
args = args.concat(ffmpegArgs[format]);
if (streamInfo.metadata) args = args.concat(metadataManager(streamInfo.metadata));
args.push('-f', format, 'pipe:4');
let ffmpegProcess = spawn(ffmpeg, args, {
process = spawn(ffmpeg, args, {
windowsHide: true,
stdio: [
'inherit', 'inherit', 'inherit',
'pipe', 'pipe'
],
});
res.setHeader('Connection', 'keep-alive');
res.setHeader('Content-Disposition', contentDisposition(streamInfo.filename));
res.on('error', () => {
ffmpegProcess.kill();
fail(res);
});
ffmpegProcess.stdio[4].pipe(res).on('error', () => {
ffmpegProcess.kill();
fail(res);
});
audio.pipe(ffmpegProcess.stdio[3]).on('error', () => {
ffmpegProcess.kill();
fail(res);
});
audio.on('error', () => {
ffmpegProcess.kill();
fail(res);
});
audio.on('aborted', () => {
ffmpegProcess.kill();
fail(res);
});
ffmpegProcess.on('disconnect', () => ffmpegProcess.kill());
ffmpegProcess.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('exit', () => ffmpegProcess.kill());
res.on('finish', () => ffmpegProcess.kill());
res.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('error', () => {
ffmpegProcess.kill();
fail(res);
});
audio.on('error', shutdown)
.pipe(process.stdio[3]).on('error', shutdown);
} catch (e) {
fail(res);
process.stdio[4].pipe(res).on('error', shutdown);
process.on('close', shutdown);
res.on('finish', shutdown);
res.on('close', shutdown);
} catch {
shutdown();
}
}
export function streamAudioOnly(streamInfo, res) {
let process;
const shutdown = () => (process?.kill(), closeResponse(res));
try {
let args = [
'-loglevel', '-8',
'-threads', `${getThreads()}`,
'-i', streamInfo.urls
]
if (streamInfo.metadata) {
if (streamInfo.metadata.cover) { // currently corrupts the audio
args.push('-i', streamInfo.metadata.cover, '-map', '0:a', '-map', '1:0')
@ -113,13 +104,14 @@ export function streamAudioOnly(streamInfo, res) {
} else {
args.push('-vn')
}
let arg = streamInfo.copy ? ffmpegArgs["copy"] : ffmpegArgs["audio"];
args = args.concat(arg);
if (ffmpegArgs[streamInfo.audioFormat]) args = args.concat(ffmpegArgs[streamInfo.audioFormat]);
args.push('-f', streamInfo.audioFormat === "m4a" ? "ipod" : streamInfo.audioFormat, 'pipe:3');
const ffmpegProcess = spawn(ffmpeg, args, {
process = spawn(ffmpeg, args, {
windowsHide: true,
stdio: [
'inherit', 'inherit', 'inherit',
@ -128,22 +120,20 @@ export function streamAudioOnly(streamInfo, res) {
});
res.setHeader('Connection', 'keep-alive');
res.setHeader('Content-Disposition', contentDisposition(`${streamInfo.filename}.${streamInfo.audioFormat}`));
ffmpegProcess.stdio[3].pipe(res);
ffmpegProcess.on('disconnect', () => ffmpegProcess.kill());
ffmpegProcess.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('exit', () => ffmpegProcess.kill());
res.on('finish', () => ffmpegProcess.kill());
res.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('error', () => {
ffmpegProcess.kill();
fail(res);
});
} catch (e) {
fail(res);
process.stdio[3].pipe(res);
process.on('close', shutdown);
res.on('finish', shutdown);
res.on('close', shutdown);
} catch {
shutdown();
}
}
export function streamVideoOnly(streamInfo, res) {
let process;
const shutdown = () => (process?.kill(), closeResponse(res));
try {
let format = streamInfo.filename.split('.')[streamInfo.filename.split('.').length - 1], args = [
'-loglevel', '-8',
@ -155,7 +145,7 @@ export function streamVideoOnly(streamInfo, res) {
if (streamInfo.service === "vimeo" || streamInfo.service === "rutube") args.push('-bsf:a', 'aac_adtstoasc');
if (format === "mp4") args.push('-movflags', 'faststart+frag_keyframe+empty_moov');
args.push('-f', format, 'pipe:3');
const ffmpegProcess = spawn(ffmpeg, args, {
process = spawn(ffmpeg, args, {
windowsHide: true,
stdio: [
'inherit', 'inherit', 'inherit',
@ -164,18 +154,12 @@ export function streamVideoOnly(streamInfo, res) {
});
res.setHeader('Connection', 'keep-alive');
res.setHeader('Content-Disposition', contentDisposition(streamInfo.filename));
ffmpegProcess.stdio[3].pipe(res);
ffmpegProcess.on('disconnect', () => ffmpegProcess.kill());
ffmpegProcess.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('exit', () => ffmpegProcess.kill());
res.on('finish', () => ffmpegProcess.kill());
res.on('close', () => ffmpegProcess.kill());
ffmpegProcess.on('error', () => {
ffmpegProcess.kill();
fail(res);
});
} catch (e) {
fail(res);
process.stdio[3].pipe(res);
process.on('close', shutdown);
res.on('finish', shutdown);
res.on('close', shutdown);
} catch {
shutdown();
}
}