feat(xtream-proxy): rewrite proxy logic and update configuration format
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Refactor the xtream-proxy from a single-file Express-based server to a modular Node.js application using native http/https modules. This change introduces a major version bump to 2.0.0. - Replace `hosts.txt` with `upstreams.json` for configuration - Remove heavy dependencies (`express`, `ws`) in favor of native modules - Implement new environment variables for proxy credentials and timeouts - Add `src/` directory for modular code structure - Add `docker-compose.example.yml` for easier deployment - Update Dockerfile to support the new directory structure and environment - Improve error handling and probe logic for upstream selection
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@@ -1,3 +1,5 @@
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node_modules
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node_modules
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npm-debug.log
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npm-debug.log
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hosts.txt.example
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upstreams.json
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upstreams.json.example
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.git
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@@ -1 +1,2 @@
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node_modules/
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node_modules/
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upstreams.json
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@@ -2,10 +2,9 @@ FROM node:22-alpine
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WORKDIR /app
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WORKDIR /app
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COPY package.json package-lock.json ./
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COPY package.json ./
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RUN npm ci --omit=dev
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COPY server.js ./
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COPY server.js ./
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COPY src ./src/
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RUN addgroup -g 1001 -S nodejs \
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RUN addgroup -g 1001 -S nodejs \
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&& adduser -S nodejs -u 1001 \
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&& adduser -S nodejs -u 1001 \
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@@ -15,11 +14,15 @@ USER nodejs
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EXPOSE 8080
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EXPOSE 8080
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ENV LISTEN_PORT=8080
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ENV LISTEN_PORT=8080 \
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ENV HOSTS_FILE=/config/hosts.txt
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CONFIG_FILE=/config/upstreams.json \
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ENV CHECK_INTERVAL_SEC=30
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PROXY_USERNAME="" \
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ENV PING_TIMEOUT_MS=8000
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PROXY_PASSWORD="" \
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ENV HEALTH_PATH=/
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PROBE_INTERVAL_SEC=30 \
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PROBE_TIMEOUT_MS=8000 \
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UPSTREAM_TIMEOUT_MS=15000 \
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ALLOW_BUSY_FALLBACK=1 \
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PROXY_INSECURE_TLS=0
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HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
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HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
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CMD node -e "require('http').get('http://127.0.0.1:'+(process.env.LISTEN_PORT||8080)+'/health',(r)=>{let d='';r.on('data',c=>d+=c);r.on('end',()=>{try{process.exit(JSON.parse(d).ok?0:1)}catch{process.exit(1)}})}).on('error',()=>process.exit(1))"
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CMD node -e "require('http').get('http://127.0.0.1:'+(process.env.LISTEN_PORT||8080)+'/health',(r)=>{let d='';r.on('data',c=>d+=c);r.on('end',()=>{try{process.exit(JSON.parse(d).ok?0:1)}catch{process.exit(1)}})}).on('error',()=>process.exit(1))"
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@@ -0,0 +1,17 @@
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services:
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xtream-proxy:
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build: .
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container_name: xtream-proxy
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ports:
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- "8080:8080"
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environment:
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PROXY_USERNAME: "${PROXY_USERNAME}"
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PROXY_PASSWORD: "${PROXY_PASSWORD}"
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PROBE_INTERVAL_SEC: "30"
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PROBE_TIMEOUT_MS: "8000"
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UPSTREAM_TIMEOUT_MS: "15000"
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ALLOW_BUSY_FALLBACK: "1"
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# PROXY_INSECURE_TLS: "1" # alleen nodig bij self-signed upstream-certificaten
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volumes:
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- ./upstreams.json:/config/upstreams.json:ro
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restart: unless-stopped
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@@ -1,5 +0,0 @@
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# One base URL per line (scheme + host + optional port). No path required.
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# Lines starting with # are ignored.
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http://panel1.example.com:8080
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https://backup.example.com
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Generated
-849
@@ -1,849 +0,0 @@
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{
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"name": "xtream-proxy",
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"version": "1.0.0",
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"lockfileVersion": 3,
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"requires": true,
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"packages": {
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"": {
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"name": "xtream-proxy",
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"version": "1.0.0",
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"dependencies": {
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"express": "^4.21.0",
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"ws": "^8.18.0"
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}
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|
|
||||||
"engines": {
|
|
||||||
"node": ">=10.0.0"
|
|
||||||
},
|
|
||||||
"peerDependencies": {
|
|
||||||
"bufferutil": "^4.0.1",
|
|
||||||
"utf-8-validate": ">=5.0.2"
|
|
||||||
},
|
|
||||||
"peerDependenciesMeta": {
|
|
||||||
"bufferutil": {
|
|
||||||
"optional": true
|
|
||||||
},
|
|
||||||
"utf-8-validate": {
|
|
||||||
"optional": true
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@@ -1,12 +1,12 @@
|
|||||||
{
|
{
|
||||||
"name": "xtream-proxy",
|
"name": "xtream-proxy",
|
||||||
"version": "1.0.0",
|
"version": "2.0.0",
|
||||||
"private": true,
|
"private": true,
|
||||||
|
"description": "Proxies the fastest available upstream from a list of Xtream Codes credentials",
|
||||||
"scripts": {
|
"scripts": {
|
||||||
"start": "node server.js"
|
"start": "node server.js"
|
||||||
},
|
},
|
||||||
"dependencies": {
|
"engines": {
|
||||||
"express": "^4.21.0",
|
"node": ">=20"
|
||||||
"ws": "^8.18.0"
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
+39
-355
@@ -1,381 +1,65 @@
|
|||||||
'use strict';
|
'use strict';
|
||||||
|
|
||||||
const fs = require('fs');
|
|
||||||
const http = require('http');
|
const http = require('http');
|
||||||
const https = require('https');
|
const { settings, validate } = require('./src/settings');
|
||||||
const express = require('express');
|
const {
|
||||||
const WebSocket = require('ws');
|
probeCycle,
|
||||||
|
startProbing,
|
||||||
|
stopProbing,
|
||||||
|
} = require('./src/upstreams');
|
||||||
|
const { handleProxy } = require('./src/proxy');
|
||||||
|
const { healthPayload } = require('./src/health');
|
||||||
|
const { sendText, sendJson } = require('./src/http-utils');
|
||||||
|
|
||||||
const LISTEN_PORT = Number(process.env.LISTEN_PORT || 8080);
|
const HEALTH_PATHS = new Set(['/health', '/healthz']);
|
||||||
const HOSTS_FILE = process.env.HOSTS_FILE || '/config/hosts.txt';
|
|
||||||
const CHECK_INTERVAL_SEC = Math.max(
|
|
||||||
5,
|
|
||||||
Number(process.env.CHECK_INTERVAL_SEC || 30) || 30
|
|
||||||
);
|
|
||||||
const PING_TIMEOUT_MS = Math.max(1000, Number(process.env.PING_TIMEOUT_MS || 8000));
|
|
||||||
const HEALTH_PATH = process.env.HEALTH_PATH || '/';
|
|
||||||
const REJECT_UNAUTHORIZED = process.env.PROXY_INSECURE_TLS !== '1';
|
|
||||||
|
|
||||||
const HOP_BY_HOP = new Set([
|
const server = http.createServer((req, res) => {
|
||||||
'connection',
|
let reqUrl;
|
||||||
'keep-alive',
|
|
||||||
'proxy-authenticate',
|
|
||||||
'proxy-authorization',
|
|
||||||
'te',
|
|
||||||
'trailers',
|
|
||||||
'transfer-encoding',
|
|
||||||
'upgrade',
|
|
||||||
]);
|
|
||||||
|
|
||||||
let currentTarget = null;
|
|
||||||
let lastStats = { checkedAt: null, results: [], selected: null };
|
|
||||||
|
|
||||||
function readHostsFile() {
|
|
||||||
if (!fs.existsSync(HOSTS_FILE)) {
|
|
||||||
console.error(`Hosts file not found: ${HOSTS_FILE}`);
|
|
||||||
return [];
|
|
||||||
}
|
|
||||||
const raw = fs.readFileSync(HOSTS_FILE, 'utf8');
|
|
||||||
const lines = raw.split(/\r?\n/);
|
|
||||||
const urls = [];
|
|
||||||
for (const line of lines) {
|
|
||||||
const t = line.trim();
|
|
||||||
if (!t || t.startsWith('#')) continue;
|
|
||||||
try {
|
try {
|
||||||
const u = new URL(t);
|
reqUrl = new URL(req.url, 'http://proxy.invalid');
|
||||||
if (u.protocol !== 'http:' && u.protocol !== 'https:') continue;
|
|
||||||
const base = `${u.protocol}//${u.host}`;
|
|
||||||
urls.push(base);
|
|
||||||
} catch {
|
} catch {
|
||||||
console.warn(`Skipping invalid URL line: ${t}`);
|
sendText(res, 400, 'Bad request');
|
||||||
}
|
|
||||||
}
|
|
||||||
return [...new Set(urls)];
|
|
||||||
}
|
|
||||||
|
|
||||||
function pingBase(base, path) {
|
|
||||||
const HARD_CAP_MS = PING_TIMEOUT_MS + 2000;
|
|
||||||
|
|
||||||
return new Promise((resolve) => {
|
|
||||||
let url;
|
|
||||||
try {
|
|
||||||
const p = path.startsWith('/') ? path : `/${path}`;
|
|
||||||
url = new URL(p, base.endsWith('/') ? base : `${base}/`);
|
|
||||||
} catch {
|
|
||||||
resolve({ base, ok: false, ms: null, error: 'bad_url' });
|
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
let settled = false;
|
if (req.method === 'GET' && HEALTH_PATHS.has(reqUrl.pathname)) {
|
||||||
let clientReq = null;
|
sendJson(res, 200, healthPayload());
|
||||||
|
|
||||||
const finish = (result) => {
|
|
||||||
if (settled) return;
|
|
||||||
settled = true;
|
|
||||||
clearTimeout(hardTimer);
|
|
||||||
try {
|
|
||||||
clientReq?.destroy();
|
|
||||||
} catch (_) {}
|
|
||||||
resolve(result);
|
|
||||||
};
|
|
||||||
|
|
||||||
const hardTimer = setTimeout(() => {
|
|
||||||
try {
|
|
||||||
clientReq?.destroy();
|
|
||||||
} catch (_) {}
|
|
||||||
finish({ base, ok: false, ms: null, error: 'hard_timeout' });
|
|
||||||
}, HARD_CAP_MS);
|
|
||||||
|
|
||||||
const lib = url.protocol === 'https:' ? https : http;
|
|
||||||
const start = Date.now();
|
|
||||||
clientReq = lib.request(
|
|
||||||
{
|
|
||||||
protocol: url.protocol,
|
|
||||||
hostname: url.hostname,
|
|
||||||
port: url.port || (url.protocol === 'https:' ? 443 : 80),
|
|
||||||
path: url.pathname + url.search,
|
|
||||||
method: 'GET',
|
|
||||||
timeout: PING_TIMEOUT_MS,
|
|
||||||
rejectUnauthorized: REJECT_UNAUTHORIZED,
|
|
||||||
headers: {
|
|
||||||
'User-Agent': 'xtream-proxy-health/1.0',
|
|
||||||
Connection: 'close',
|
|
||||||
},
|
|
||||||
},
|
|
||||||
(res) => {
|
|
||||||
res.resume();
|
|
||||||
res.on('end', () => {
|
|
||||||
const ms = Date.now() - start;
|
|
||||||
const ok = res.statusCode >= 200 && res.statusCode < 500;
|
|
||||||
finish({ base, ok, ms, status: res.statusCode });
|
|
||||||
});
|
|
||||||
res.on('error', () => {
|
|
||||||
finish({ base, ok: false, ms: null, error: 'response_error' });
|
|
||||||
});
|
|
||||||
}
|
|
||||||
);
|
|
||||||
clientReq.on('error', (e) => {
|
|
||||||
finish({ base, ok: false, ms: null, error: e.code || e.message });
|
|
||||||
});
|
|
||||||
clientReq.on('timeout', () => {
|
|
||||||
clientReq.destroy();
|
|
||||||
finish({ base, ok: false, ms: null, error: 'timeout' });
|
|
||||||
});
|
|
||||||
clientReq.end();
|
|
||||||
});
|
|
||||||
}
|
|
||||||
|
|
||||||
async function pickFastestHost() {
|
|
||||||
const hosts = readHostsFile();
|
|
||||||
if (hosts.length === 0) {
|
|
||||||
console.warn('No valid hosts in file; keeping previous target if any.');
|
|
||||||
lastStats = {
|
|
||||||
checkedAt: new Date().toISOString(),
|
|
||||||
results: [],
|
|
||||||
selected: currentTarget,
|
|
||||||
};
|
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
const pings = await Promise.all(hosts.map((h) => pingBase(h, HEALTH_PATH)));
|
handleProxy(req, res, reqUrl);
|
||||||
const ok = pings.filter((p) => p.ok && typeof p.ms === 'number');
|
|
||||||
ok.sort((a, b) => a.ms - b.ms);
|
|
||||||
|
|
||||||
lastStats = {
|
|
||||||
checkedAt: new Date().toISOString(),
|
|
||||||
results: pings,
|
|
||||||
selected: ok[0]?.base ?? currentTarget,
|
|
||||||
};
|
|
||||||
|
|
||||||
if (ok[0]) {
|
|
||||||
const prev = currentTarget;
|
|
||||||
currentTarget = ok[0].base;
|
|
||||||
const others = ok.slice(1).map((x) => `${x.base}=${x.ms}ms`).join(', ') || 'none';
|
|
||||||
if (prev !== currentTarget) {
|
|
||||||
console.log(`Upstream switched → ${currentTarget} (${ok[0].ms} ms). Also: ${others}`);
|
|
||||||
} else {
|
|
||||||
console.log(`Health check: keeping ${currentTarget} (${ok[0].ms} ms). Others: ${others}`);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
console.warn(
|
|
||||||
'No host responded successfully; keeping previous target:',
|
|
||||||
currentTarget || '(none)'
|
|
||||||
);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
let checkTimer = null;
|
|
||||||
let checkRunning = false;
|
|
||||||
|
|
||||||
function scheduleChecks() {
|
|
||||||
const delayMs = CHECK_INTERVAL_SEC * 1000;
|
|
||||||
const tick = async () => {
|
|
||||||
if (checkRunning) {
|
|
||||||
console.warn('Health check still running; skipping overlapping run (next in ' + CHECK_INTERVAL_SEC + 's)');
|
|
||||||
checkTimer = setTimeout(tick, delayMs);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
checkRunning = true;
|
|
||||||
try {
|
|
||||||
await pickFastestHost();
|
|
||||||
} catch (e) {
|
|
||||||
console.error('Health check error:', e);
|
|
||||||
} finally {
|
|
||||||
checkRunning = false;
|
|
||||||
checkTimer = setTimeout(tick, delayMs);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
checkTimer = setTimeout(tick, delayMs);
|
|
||||||
}
|
|
||||||
|
|
||||||
function filterHopByHop(headers) {
|
|
||||||
const out = Object.create(null);
|
|
||||||
if (!headers) return out;
|
|
||||||
for (const [k, v] of Object.entries(headers)) {
|
|
||||||
if (v === undefined) continue;
|
|
||||||
if (HOP_BY_HOP.has(k.toLowerCase())) continue;
|
|
||||||
out[k] = v;
|
|
||||||
}
|
|
||||||
return out;
|
|
||||||
}
|
|
||||||
|
|
||||||
function buildRequestHeaders(req, targetUrl) {
|
|
||||||
const out = filterHopByHop(req.headers);
|
|
||||||
const existing = req.headers['x-forwarded-for'];
|
|
||||||
const client = req.socket.remoteAddress || '';
|
|
||||||
out['x-forwarded-for'] = existing ? `${existing}, ${client}` : client;
|
|
||||||
const xfProto = req.headers['x-forwarded-proto'];
|
|
||||||
out['x-forwarded-proto'] = typeof xfProto === 'string' && xfProto ? xfProto : 'http';
|
|
||||||
const xfHost = req.headers['x-forwarded-host'] || req.headers.host;
|
|
||||||
if (xfHost) out['x-forwarded-host'] = xfHost;
|
|
||||||
out.host = targetUrl.host;
|
|
||||||
return out;
|
|
||||||
}
|
|
||||||
|
|
||||||
function proxyHttp(req, res) {
|
|
||||||
const base = currentTarget.replace(/\/$/, '');
|
|
||||||
let targetUrl;
|
|
||||||
try {
|
|
||||||
targetUrl = new URL(req.url, `${base}/`);
|
|
||||||
} catch {
|
|
||||||
res.status(400).type('text/plain').send('Bad request URL');
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
const lib = targetUrl.protocol === 'https:' ? https : http;
|
|
||||||
const opts = {
|
|
||||||
protocol: targetUrl.protocol,
|
|
||||||
hostname: targetUrl.hostname,
|
|
||||||
port: targetUrl.port || (targetUrl.protocol === 'https:' ? 443 : 80),
|
|
||||||
path: targetUrl.pathname + targetUrl.search,
|
|
||||||
method: req.method,
|
|
||||||
headers: buildRequestHeaders(req, targetUrl),
|
|
||||||
rejectUnauthorized: REJECT_UNAUTHORIZED,
|
|
||||||
};
|
|
||||||
|
|
||||||
const pReq = lib.request(opts, (pRes) => {
|
|
||||||
res.writeHead(pRes.statusCode, filterHopByHop(pRes.headers));
|
|
||||||
pRes.pipe(res);
|
|
||||||
});
|
|
||||||
|
|
||||||
pReq.on('error', (err) => {
|
|
||||||
if (!res.headersSent) {
|
|
||||||
res.writeHead(502, { 'Content-Type': 'text/plain' });
|
|
||||||
}
|
|
||||||
res.end(`Upstream error: ${err.message}`);
|
|
||||||
});
|
|
||||||
|
|
||||||
req.pipe(pReq);
|
|
||||||
}
|
|
||||||
|
|
||||||
function toWsUrl(httpBase, reqPath) {
|
|
||||||
const base = httpBase.replace(/\/$/, '');
|
|
||||||
const u = new URL(reqPath, `${base}/`);
|
|
||||||
const proto = u.protocol === 'https:' ? 'wss:' : 'ws:';
|
|
||||||
return `${proto}//${u.host}${u.pathname}${u.search}`;
|
|
||||||
}
|
|
||||||
|
|
||||||
function buildWsClientHeaders(req, targetWsUrl) {
|
|
||||||
const u = new URL(targetWsUrl);
|
|
||||||
const out = filterHopByHop(req.headers);
|
|
||||||
for (const key of Object.keys(out)) {
|
|
||||||
if (key.toLowerCase().startsWith('sec-websocket')) {
|
|
||||||
delete out[key];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
delete out.host;
|
|
||||||
out.host = u.host;
|
|
||||||
return out;
|
|
||||||
}
|
|
||||||
|
|
||||||
const app = express();
|
|
||||||
|
|
||||||
app.get('/health', (_req, res) => {
|
|
||||||
res.json({
|
|
||||||
ok: Boolean(currentTarget),
|
|
||||||
upstream: currentTarget,
|
|
||||||
intervalSec: CHECK_INTERVAL_SEC,
|
|
||||||
lastCheck: lastStats,
|
|
||||||
});
|
|
||||||
});
|
});
|
||||||
|
|
||||||
app.use((req, res) => {
|
function shutdown(signal) {
|
||||||
if (!currentTarget) {
|
console.log(`Received ${signal}, shutting down`);
|
||||||
res.status(503).type('text/plain').send('No upstream available yet (hosts file empty or all pings failed).');
|
stopProbing();
|
||||||
return;
|
server.close(() => process.exit(0));
|
||||||
}
|
setTimeout(() => process.exit(0), 5000).unref();
|
||||||
proxyHttp(req, res);
|
}
|
||||||
});
|
|
||||||
|
|
||||||
const server = http.createServer(app);
|
process.on('SIGTERM', () => shutdown('SIGTERM'));
|
||||||
const wss = new WebSocket.Server({ noServer: true });
|
process.on('SIGINT', () => shutdown('SIGINT'));
|
||||||
|
|
||||||
server.on('upgrade', (req, socket, head) => {
|
|
||||||
if (!currentTarget) {
|
|
||||||
socket.write('HTTP/1.1 503 Service Unavailable\r\nConnection: close\r\n\r\n');
|
|
||||||
socket.destroy();
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
let upstreamUrl;
|
|
||||||
try {
|
|
||||||
upstreamUrl = toWsUrl(currentTarget, req.url);
|
|
||||||
} catch {
|
|
||||||
socket.destroy();
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
wss.handleUpgrade(req, socket, head, (clientWs) => {
|
|
||||||
const upstream = new WebSocket(upstreamUrl, {
|
|
||||||
rejectUnauthorized: REJECT_UNAUTHORIZED,
|
|
||||||
headers: buildWsClientHeaders(req, upstreamUrl),
|
|
||||||
});
|
|
||||||
|
|
||||||
const pending = [];
|
|
||||||
let upstreamReady = false;
|
|
||||||
|
|
||||||
clientWs.on('message', (data, isBinary) => {
|
|
||||||
if (upstreamReady && upstream.readyState === WebSocket.OPEN) {
|
|
||||||
upstream.send(data, { binary: isBinary });
|
|
||||||
} else {
|
|
||||||
pending.push({ data, isBinary });
|
|
||||||
}
|
|
||||||
});
|
|
||||||
|
|
||||||
upstream.on('open', () => {
|
|
||||||
upstreamReady = true;
|
|
||||||
for (const m of pending) {
|
|
||||||
if (upstream.readyState === WebSocket.OPEN) upstream.send(m.data, { binary: m.isBinary });
|
|
||||||
}
|
|
||||||
pending.length = 0;
|
|
||||||
|
|
||||||
upstream.on('message', (data, isBinary) => {
|
|
||||||
if (clientWs.readyState === WebSocket.OPEN) clientWs.send(data, { binary: isBinary });
|
|
||||||
});
|
|
||||||
clientWs.on('ping', (buf) => upstream.ping(buf));
|
|
||||||
upstream.on('ping', (buf) => clientWs.ping(buf));
|
|
||||||
clientWs.on('pong', (buf) => upstream.pong(buf));
|
|
||||||
upstream.on('pong', (buf) => clientWs.pong(buf));
|
|
||||||
});
|
|
||||||
|
|
||||||
const shutdown = () => {
|
|
||||||
try {
|
|
||||||
clientWs.terminate();
|
|
||||||
} catch (_) {}
|
|
||||||
try {
|
|
||||||
upstream.terminate();
|
|
||||||
} catch (_) {}
|
|
||||||
};
|
|
||||||
|
|
||||||
upstream.on('error', shutdown);
|
|
||||||
clientWs.on('error', shutdown);
|
|
||||||
upstream.on('close', shutdown);
|
|
||||||
clientWs.on('close', shutdown);
|
|
||||||
});
|
|
||||||
});
|
|
||||||
|
|
||||||
async function main() {
|
async function main() {
|
||||||
await pickFastestHost();
|
try {
|
||||||
server.listen(LISTEN_PORT, () => {
|
validate();
|
||||||
console.log(`Xtream proxy listening on :${LISTEN_PORT}`);
|
} catch (e) {
|
||||||
|
console.error(e.message);
|
||||||
|
process.exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
await probeCycle();
|
||||||
|
|
||||||
|
server.listen(settings.listenPort, () => {
|
||||||
|
console.log(`Xtream proxy listening on :${settings.listenPort}`);
|
||||||
|
console.log(`Config file: ${settings.configFile}`);
|
||||||
console.log(
|
console.log(
|
||||||
`Hosts file: ${HOSTS_FILE}, interval: ${CHECK_INTERVAL_SEC}s (from end of each run), health path: ${HEALTH_PATH}`
|
`Probe interval: ${settings.probeIntervalSec}s, probe timeout: ${settings.probeTimeoutMs}ms`
|
||||||
);
|
);
|
||||||
scheduleChecks();
|
startProbing();
|
||||||
});
|
});
|
||||||
}
|
}
|
||||||
|
|
||||||
function shutdown() {
|
|
||||||
if (checkTimer) {
|
|
||||||
clearTimeout(checkTimer);
|
|
||||||
checkTimer = null;
|
|
||||||
}
|
|
||||||
server.close(() => process.exit(0));
|
|
||||||
}
|
|
||||||
|
|
||||||
process.on('SIGTERM', shutdown);
|
|
||||||
process.on('SIGINT', shutdown);
|
|
||||||
|
|
||||||
main().catch((e) => {
|
main().catch((e) => {
|
||||||
console.error(e);
|
console.error(e);
|
||||||
process.exit(1);
|
process.exit(1);
|
||||||
|
|||||||
@@ -0,0 +1,92 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const fs = require('fs');
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
const { Upstream } = require('./upstream');
|
||||||
|
|
||||||
|
let upstreams = [];
|
||||||
|
|
||||||
|
function readConfigEntries() {
|
||||||
|
const raw = fs.readFileSync(settings.configFile, 'utf8');
|
||||||
|
let data;
|
||||||
|
try {
|
||||||
|
data = JSON.parse(raw);
|
||||||
|
} catch (e) {
|
||||||
|
throw new Error(`invalid JSON: ${e.message}`);
|
||||||
|
}
|
||||||
|
if (!Array.isArray(data)) {
|
||||||
|
throw new Error('expected a JSON array');
|
||||||
|
}
|
||||||
|
|
||||||
|
const entries = [];
|
||||||
|
data.forEach((item, index) => {
|
||||||
|
if (!item || typeof item !== 'object' || Array.isArray(item)) {
|
||||||
|
console.warn(`Config entry #${index + 1}: not an object, skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
const { url, username, password } = item;
|
||||||
|
if (typeof url !== 'string' || !url.trim()) {
|
||||||
|
console.warn(`Config entry #${index + 1}: missing url, skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (typeof username !== 'string' || !username) {
|
||||||
|
console.warn(`Config entry #${index + 1}: missing username, skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (typeof password !== 'string' || !password) {
|
||||||
|
console.warn(`Config entry #${index + 1}: missing password, skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
let parsed;
|
||||||
|
try {
|
||||||
|
parsed = new URL(url);
|
||||||
|
} catch {
|
||||||
|
console.warn(`Config entry #${index + 1}: invalid url, skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
|
||||||
|
console.warn(`Config entry #${index + 1}: url must be http(s), skipping`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
entries.push({ url, username, password });
|
||||||
|
});
|
||||||
|
return entries;
|
||||||
|
}
|
||||||
|
|
||||||
|
function reloadConfig() {
|
||||||
|
let entries;
|
||||||
|
try {
|
||||||
|
entries = readConfigEntries();
|
||||||
|
} catch (e) {
|
||||||
|
console.error(`Config load failed (${settings.configFile}): ${e.message}`);
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
const previous = new Map(upstreams.map((u) => [u.key, u]));
|
||||||
|
const next = [];
|
||||||
|
const seen = new Set();
|
||||||
|
|
||||||
|
for (const entry of entries) {
|
||||||
|
const upstream = new Upstream(entry);
|
||||||
|
if (seen.has(upstream.key)) continue;
|
||||||
|
seen.add(upstream.key);
|
||||||
|
next.push(previous.get(upstream.key) || upstream);
|
||||||
|
}
|
||||||
|
|
||||||
|
const removed = upstreams.filter((u) => !seen.has(u.key)).length;
|
||||||
|
const added = next.filter((u) => !previous.has(u.key)).length;
|
||||||
|
if (added || removed) {
|
||||||
|
console.log(`Config reloaded: ${next.length} upstream(s), +${added} / -${removed}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
upstreams = next;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
|
function getUpstreams() {
|
||||||
|
return upstreams;
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { reloadConfig, getUpstreams };
|
||||||
@@ -0,0 +1,26 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
const { getUpstreams } = require('./config');
|
||||||
|
const {
|
||||||
|
getLastProbeAt,
|
||||||
|
rankedUpstreams,
|
||||||
|
describeUpstream,
|
||||||
|
} = require('./upstreams');
|
||||||
|
|
||||||
|
function healthPayload() {
|
||||||
|
const upstreams = getUpstreams();
|
||||||
|
const ranked = rankedUpstreams();
|
||||||
|
const selected = ranked.find((entry) => !entry.busy) || ranked[0] || null;
|
||||||
|
|
||||||
|
return {
|
||||||
|
ok: upstreams.some((upstream) => upstream.state.healthy),
|
||||||
|
configFile: settings.configFile,
|
||||||
|
probeIntervalSec: settings.probeIntervalSec,
|
||||||
|
lastProbeAt: getLastProbeAt(),
|
||||||
|
selected: selected ? describeUpstream(selected.upstream) : null,
|
||||||
|
upstreams: upstreams.map(describeUpstream),
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { healthPayload };
|
||||||
@@ -0,0 +1,39 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
function sendText(res, statusCode, text, extraHeaders = {}) {
|
||||||
|
res.writeHead(statusCode, {
|
||||||
|
'Content-Type': 'text/plain; charset=utf-8',
|
||||||
|
'Cache-Control': 'no-store',
|
||||||
|
...extraHeaders,
|
||||||
|
});
|
||||||
|
res.end(text);
|
||||||
|
}
|
||||||
|
|
||||||
|
function sendJson(res, statusCode, body) {
|
||||||
|
const payload = JSON.stringify(body);
|
||||||
|
res.writeHead(statusCode, {
|
||||||
|
'Content-Type': 'application/json; charset=utf-8',
|
||||||
|
'Cache-Control': 'no-store',
|
||||||
|
'Content-Length': Buffer.byteLength(payload),
|
||||||
|
});
|
||||||
|
res.end(payload);
|
||||||
|
}
|
||||||
|
|
||||||
|
function firstHeader(value) {
|
||||||
|
if (Array.isArray(value)) value = value[0];
|
||||||
|
if (typeof value !== 'string') return '';
|
||||||
|
return value.split(',')[0].trim();
|
||||||
|
}
|
||||||
|
|
||||||
|
function getProxyOrigin(req) {
|
||||||
|
const proto =
|
||||||
|
firstHeader(req.headers['x-forwarded-proto']) ||
|
||||||
|
(req.socket.encrypted ? 'https' : 'http');
|
||||||
|
const host =
|
||||||
|
firstHeader(req.headers['x-forwarded-host']) ||
|
||||||
|
req.headers.host ||
|
||||||
|
'localhost';
|
||||||
|
return `${proto}://${host}`;
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { sendText, sendJson, firstHeader, getProxyOrigin };
|
||||||
@@ -0,0 +1,154 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const http = require('http');
|
||||||
|
const https = require('https');
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
const { baseState, nowIso, buildUpstreamUrl } = require('./upstream');
|
||||||
|
|
||||||
|
function toInt(value) {
|
||||||
|
if (value === null || value === undefined || value === '') return null;
|
||||||
|
const n = Number(value);
|
||||||
|
return Number.isFinite(n) ? n : null;
|
||||||
|
}
|
||||||
|
|
||||||
|
function interpretProbe(statusCode, body, elapsedMs) {
|
||||||
|
const state = { ...baseState(), lastChecked: nowIso() };
|
||||||
|
|
||||||
|
if (statusCode < 200 || statusCode >= 300) {
|
||||||
|
state.error = `http_${statusCode}`;
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
|
||||||
|
let json;
|
||||||
|
try {
|
||||||
|
json = JSON.parse(body);
|
||||||
|
} catch {
|
||||||
|
state.error = 'invalid_json';
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
|
||||||
|
const info = json && (json.user_info || json.userInfo);
|
||||||
|
if (!info || typeof info !== 'object') {
|
||||||
|
state.error = 'no_user_info';
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
|
||||||
|
state.auth = info.auth === undefined ? null : info.auth;
|
||||||
|
state.status = info.status === undefined ? null : info.status;
|
||||||
|
state.activeCons = toInt(info.active_cons);
|
||||||
|
state.maxCons = toInt(info.max_connections);
|
||||||
|
|
||||||
|
if (state.auth !== null && Number(state.auth) !== 1) {
|
||||||
|
state.error = 'not_authorized';
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
if (
|
||||||
|
state.status !== null &&
|
||||||
|
String(state.status).toLowerCase() !== 'active'
|
||||||
|
) {
|
||||||
|
state.error = `status_${state.status}`;
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
|
||||||
|
state.healthy = true;
|
||||||
|
state.latencyMs = Math.max(0, Math.round(elapsedMs));
|
||||||
|
state.busy =
|
||||||
|
state.maxCons !== null &&
|
||||||
|
state.maxCons > 0 &&
|
||||||
|
state.activeCons !== null &&
|
||||||
|
state.activeCons >= state.maxCons;
|
||||||
|
|
||||||
|
return state;
|
||||||
|
}
|
||||||
|
|
||||||
|
function probeUpstream(upstream) {
|
||||||
|
const search = `?${new URLSearchParams({
|
||||||
|
username: upstream.username,
|
||||||
|
password: upstream.password,
|
||||||
|
}).toString()}`;
|
||||||
|
const target = buildUpstreamUrl(upstream, '/player_api.php', search);
|
||||||
|
const lib = target.protocol === 'https:' ? https : http;
|
||||||
|
const started = Date.now();
|
||||||
|
|
||||||
|
return new Promise((resolve) => {
|
||||||
|
let settled = false;
|
||||||
|
let req = null;
|
||||||
|
|
||||||
|
const finish = (state) => {
|
||||||
|
if (settled) return;
|
||||||
|
settled = true;
|
||||||
|
clearTimeout(hardTimeout);
|
||||||
|
if (req) {
|
||||||
|
try {
|
||||||
|
req.destroy();
|
||||||
|
} catch {}
|
||||||
|
}
|
||||||
|
resolve(state);
|
||||||
|
};
|
||||||
|
|
||||||
|
const hardTimeout = setTimeout(
|
||||||
|
() => finish({ ...baseState(), lastChecked: nowIso(), error: 'timeout' }),
|
||||||
|
settings.probeTimeoutMs + 2000
|
||||||
|
);
|
||||||
|
|
||||||
|
try {
|
||||||
|
req = lib.request(
|
||||||
|
{
|
||||||
|
protocol: target.protocol,
|
||||||
|
hostname: target.hostname,
|
||||||
|
port: target.port || undefined,
|
||||||
|
path: `${target.pathname}${target.search}`,
|
||||||
|
method: 'GET',
|
||||||
|
headers: {
|
||||||
|
'User-Agent': settings.userAgent,
|
||||||
|
Accept: 'application/json',
|
||||||
|
'Accept-Encoding': 'identity',
|
||||||
|
Connection: 'close',
|
||||||
|
},
|
||||||
|
rejectUnauthorized: settings.rejectUnauthorized,
|
||||||
|
},
|
||||||
|
(res) => {
|
||||||
|
let body = '';
|
||||||
|
res.setEncoding('utf8');
|
||||||
|
res.on('data', (chunk) => {
|
||||||
|
if (body.length < 2_000_000) body += chunk;
|
||||||
|
});
|
||||||
|
res.on('end', () =>
|
||||||
|
finish(interpretProbe(res.statusCode, body, Date.now() - started))
|
||||||
|
);
|
||||||
|
res.on('error', () =>
|
||||||
|
finish({
|
||||||
|
...baseState(),
|
||||||
|
lastChecked: nowIso(),
|
||||||
|
error: 'response_error',
|
||||||
|
})
|
||||||
|
);
|
||||||
|
}
|
||||||
|
);
|
||||||
|
} catch (e) {
|
||||||
|
finish({
|
||||||
|
...baseState(),
|
||||||
|
lastChecked: nowIso(),
|
||||||
|
error: e.code || 'request_error',
|
||||||
|
});
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
req.setTimeout(settings.probeTimeoutMs, () => {
|
||||||
|
try {
|
||||||
|
req.destroy();
|
||||||
|
} catch {}
|
||||||
|
finish({ ...baseState(), lastChecked: nowIso(), error: 'timeout' });
|
||||||
|
});
|
||||||
|
req.on('error', (e) =>
|
||||||
|
finish({
|
||||||
|
...baseState(),
|
||||||
|
lastChecked: nowIso(),
|
||||||
|
error: e.code || 'request_error',
|
||||||
|
})
|
||||||
|
);
|
||||||
|
req.end();
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { interpretProbe, probeUpstream };
|
||||||
@@ -0,0 +1,245 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const http = require('http');
|
||||||
|
const https = require('https');
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
const { getUpstreams } = require('./config');
|
||||||
|
const { buildUpstreamUrl } = require('./upstream');
|
||||||
|
const {
|
||||||
|
selectUpstream,
|
||||||
|
requestProbeSoon,
|
||||||
|
} = require('./upstreams');
|
||||||
|
const {
|
||||||
|
ReplaceStream,
|
||||||
|
buildReplacements,
|
||||||
|
rewriteUrlValue,
|
||||||
|
shouldRewriteBody,
|
||||||
|
filterHopByHop,
|
||||||
|
filterResponseHeaders,
|
||||||
|
isStreamPath,
|
||||||
|
extractCreds,
|
||||||
|
isAuthenticated,
|
||||||
|
rewritePath,
|
||||||
|
rewriteSearch,
|
||||||
|
} = require('./rewrite');
|
||||||
|
const { sendText, getProxyOrigin } = require('./http-utils');
|
||||||
|
|
||||||
|
function nowIso() {
|
||||||
|
return new Date().toISOString();
|
||||||
|
}
|
||||||
|
|
||||||
|
function canRetry(req) {
|
||||||
|
return req.method === 'GET' || req.method === 'HEAD';
|
||||||
|
}
|
||||||
|
|
||||||
|
function markUpstreamFailure(upstream, error) {
|
||||||
|
upstream.state.healthy = false;
|
||||||
|
upstream.state.error = error?.code || error?.message || 'request_error';
|
||||||
|
upstream.state.lastChecked = nowIso();
|
||||||
|
requestProbeSoon();
|
||||||
|
}
|
||||||
|
|
||||||
|
function handleProxy(req, res, reqUrl) {
|
||||||
|
const creds = extractCreds(reqUrl);
|
||||||
|
|
||||||
|
if (!isAuthenticated(creds)) {
|
||||||
|
sendText(res, 401, 'Unauthorized');
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
const streamRequest = isStreamPath(reqUrl.pathname);
|
||||||
|
const attempted = new Set();
|
||||||
|
const upstreamCount = getUpstreams().length;
|
||||||
|
let currentProxyReq = null;
|
||||||
|
let currentRelease = null;
|
||||||
|
let closed = false;
|
||||||
|
|
||||||
|
const releaseCurrent = () => {
|
||||||
|
if (currentRelease) {
|
||||||
|
const release = currentRelease;
|
||||||
|
currentRelease = null;
|
||||||
|
release();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
res.on('close', () => {
|
||||||
|
closed = true;
|
||||||
|
if (!res.writableEnded && currentProxyReq) {
|
||||||
|
try {
|
||||||
|
currentProxyReq.destroy();
|
||||||
|
} catch {}
|
||||||
|
}
|
||||||
|
releaseCurrent();
|
||||||
|
});
|
||||||
|
|
||||||
|
req.on('error', () => {
|
||||||
|
if (currentProxyReq) {
|
||||||
|
try {
|
||||||
|
currentProxyReq.destroy();
|
||||||
|
} catch {}
|
||||||
|
}
|
||||||
|
releaseCurrent();
|
||||||
|
});
|
||||||
|
|
||||||
|
const attempt = () => {
|
||||||
|
if (closed || res.headersSent) return;
|
||||||
|
|
||||||
|
const upstream = selectUpstream(attempted);
|
||||||
|
if (!upstream) {
|
||||||
|
sendText(res, 503, 'No upstream available', { 'Retry-After': '5' });
|
||||||
|
requestProbeSoon();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
attempted.add(upstream.key);
|
||||||
|
|
||||||
|
if (streamRequest) upstream.state.inFlight += 1;
|
||||||
|
let released = false;
|
||||||
|
const release = () => {
|
||||||
|
if (released) return;
|
||||||
|
released = true;
|
||||||
|
if (streamRequest) {
|
||||||
|
upstream.state.inFlight = Math.max(0, upstream.state.inFlight - 1);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
currentRelease = release;
|
||||||
|
|
||||||
|
const pathname = rewritePath(creds, upstream);
|
||||||
|
const search = rewriteSearch(reqUrl, upstream);
|
||||||
|
const target = buildUpstreamUrl(upstream, pathname, search);
|
||||||
|
|
||||||
|
const headers = filterHopByHop(req.headers);
|
||||||
|
delete headers.host;
|
||||||
|
delete headers['accept-encoding'];
|
||||||
|
headers.host = target.host;
|
||||||
|
headers['accept-encoding'] = 'identity';
|
||||||
|
|
||||||
|
const clientIp = req.socket.remoteAddress || '';
|
||||||
|
const existingForwardedFor = req.headers['x-forwarded-for'];
|
||||||
|
headers['x-forwarded-for'] = existingForwardedFor
|
||||||
|
? `${existingForwardedFor}, ${clientIp}`
|
||||||
|
: clientIp;
|
||||||
|
if (!headers['x-forwarded-proto']) {
|
||||||
|
headers['x-forwarded-proto'] = req.socket.encrypted ? 'https' : 'http';
|
||||||
|
}
|
||||||
|
if (!headers['x-forwarded-host'] && req.headers.host) {
|
||||||
|
headers['x-forwarded-host'] = req.headers.host;
|
||||||
|
}
|
||||||
|
|
||||||
|
const lib = target.protocol === 'https:' ? https : http;
|
||||||
|
let proxyReq;
|
||||||
|
let headersTimeout = null;
|
||||||
|
try {
|
||||||
|
proxyReq = lib.request(
|
||||||
|
{
|
||||||
|
protocol: target.protocol,
|
||||||
|
hostname: target.hostname,
|
||||||
|
port: target.port || undefined,
|
||||||
|
path: `${target.pathname}${target.search}`,
|
||||||
|
method: req.method,
|
||||||
|
headers,
|
||||||
|
rejectUnauthorized: settings.rejectUnauthorized,
|
||||||
|
},
|
||||||
|
(proxyRes) => {
|
||||||
|
clearTimeout(headersTimeout);
|
||||||
|
|
||||||
|
const proxyOrigin = getProxyOrigin(req);
|
||||||
|
const rewriting = shouldRewriteBody(req, proxyRes);
|
||||||
|
const responseHeaders = filterResponseHeaders(
|
||||||
|
proxyRes.headers,
|
||||||
|
rewriting
|
||||||
|
);
|
||||||
|
|
||||||
|
if (responseHeaders.location) {
|
||||||
|
responseHeaders.location = rewriteUrlValue(
|
||||||
|
responseHeaders.location,
|
||||||
|
upstream,
|
||||||
|
proxyOrigin
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
try {
|
||||||
|
res.writeHead(proxyRes.statusCode || 502, responseHeaders);
|
||||||
|
} catch {
|
||||||
|
release();
|
||||||
|
try {
|
||||||
|
proxyRes.destroy();
|
||||||
|
} catch {}
|
||||||
|
try {
|
||||||
|
res.destroy();
|
||||||
|
} catch {}
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
proxyRes.on('close', release);
|
||||||
|
proxyRes.on('error', () => {
|
||||||
|
release();
|
||||||
|
if (!res.headersSent) {
|
||||||
|
sendText(res, 502, 'Upstream response error');
|
||||||
|
} else {
|
||||||
|
res.destroy();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
if (rewriting) {
|
||||||
|
const replacer = new ReplaceStream(
|
||||||
|
buildReplacements(upstream, proxyOrigin)
|
||||||
|
);
|
||||||
|
replacer.on('error', () => {
|
||||||
|
try {
|
||||||
|
res.destroy();
|
||||||
|
} catch {}
|
||||||
|
release();
|
||||||
|
});
|
||||||
|
proxyRes.pipe(replacer).pipe(res);
|
||||||
|
} else {
|
||||||
|
proxyRes.pipe(res);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
);
|
||||||
|
} catch (e) {
|
||||||
|
release();
|
||||||
|
markUpstreamFailure(upstream, e);
|
||||||
|
if (canRetry(req) && attempted.size < upstreamCount) {
|
||||||
|
attempt();
|
||||||
|
} else {
|
||||||
|
sendText(res, 502, 'Upstream request failed');
|
||||||
|
}
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
headersTimeout = setTimeout(() => {
|
||||||
|
try {
|
||||||
|
proxyReq.destroy(new Error('upstream_timeout'));
|
||||||
|
} catch {}
|
||||||
|
}, settings.upstreamTimeoutMs);
|
||||||
|
|
||||||
|
currentProxyReq = proxyReq;
|
||||||
|
|
||||||
|
proxyReq.on('error', (err) => {
|
||||||
|
clearTimeout(headersTimeout);
|
||||||
|
if (currentProxyReq === proxyReq) currentProxyReq = null;
|
||||||
|
release();
|
||||||
|
if (closed) return;
|
||||||
|
|
||||||
|
markUpstreamFailure(upstream, err);
|
||||||
|
|
||||||
|
if (!res.headersSent && canRetry(req) && attempted.size < upstreamCount) {
|
||||||
|
attempt();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!res.headersSent) {
|
||||||
|
sendText(res, 502, 'Upstream request failed');
|
||||||
|
} else {
|
||||||
|
res.destroy();
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
req.pipe(proxyReq);
|
||||||
|
};
|
||||||
|
|
||||||
|
attempt();
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { handleProxy };
|
||||||
@@ -0,0 +1,273 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const { Transform } = require('stream');
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
|
||||||
|
const HOP_BY_HOP = new Set([
|
||||||
|
'connection',
|
||||||
|
'keep-alive',
|
||||||
|
'proxy-authenticate',
|
||||||
|
'proxy-authorization',
|
||||||
|
'te',
|
||||||
|
'trailers',
|
||||||
|
'transfer-encoding',
|
||||||
|
'upgrade',
|
||||||
|
]);
|
||||||
|
|
||||||
|
const STREAM_PATH = /^\/(live|movie|series|timeshift|hls|stream|vod)\//i;
|
||||||
|
const STREAM_EXT =
|
||||||
|
/\.(ts|m3u8|mp4|mkv|avi|mov|mpg|mpeg|flv|mp3|aac|m4a|m4v)$/i;
|
||||||
|
|
||||||
|
class ReplaceStream extends Transform {
|
||||||
|
constructor(replacements) {
|
||||||
|
super();
|
||||||
|
this.replacements = replacements
|
||||||
|
.filter((r) => r.from && r.to !== undefined && r.from !== r.to)
|
||||||
|
.map((r) => ({ from: Buffer.from(r.from), to: Buffer.from(r.to) }));
|
||||||
|
this.maxLen = this.replacements.reduce(
|
||||||
|
(max, r) => Math.max(max, r.from.length),
|
||||||
|
0
|
||||||
|
);
|
||||||
|
this.carry = Buffer.alloc(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
_transform(chunk, _encoding, callback) {
|
||||||
|
this._process(Buffer.concat([this.carry, chunk]), false, callback);
|
||||||
|
}
|
||||||
|
|
||||||
|
_flush(callback) {
|
||||||
|
this._process(this.carry, true, callback);
|
||||||
|
}
|
||||||
|
|
||||||
|
_process(buffer, isEnd, callback) {
|
||||||
|
const output = [];
|
||||||
|
let position = 0;
|
||||||
|
|
||||||
|
while (position < buffer.length) {
|
||||||
|
let best = null;
|
||||||
|
for (const replacement of this.replacements) {
|
||||||
|
const index = buffer.indexOf(replacement.from, position);
|
||||||
|
if (index === -1) continue;
|
||||||
|
if (!best || index < best.index) best = { index, replacement };
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!best) break;
|
||||||
|
const end = best.index + best.replacement.from.length;
|
||||||
|
if (!isEnd && end > buffer.length) break;
|
||||||
|
|
||||||
|
if (best.index > position) {
|
||||||
|
output.push(buffer.subarray(position, best.index));
|
||||||
|
}
|
||||||
|
output.push(best.replacement.to);
|
||||||
|
position = end;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (position < buffer.length) {
|
||||||
|
const keepFrom = isEnd
|
||||||
|
? buffer.length
|
||||||
|
: Math.max(position, buffer.length - (this.maxLen - 1));
|
||||||
|
if (keepFrom > position) {
|
||||||
|
output.push(buffer.subarray(position, keepFrom));
|
||||||
|
}
|
||||||
|
this.carry = isEnd ? Buffer.alloc(0) : buffer.subarray(keepFrom);
|
||||||
|
} else {
|
||||||
|
this.carry = Buffer.alloc(0);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (output.length) this.push(Buffer.concat(output));
|
||||||
|
callback();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function encodeQueryComponent(value) {
|
||||||
|
return encodeURIComponent(value).replace(/%20/g, '+');
|
||||||
|
}
|
||||||
|
|
||||||
|
function buildReplacements(upstream, proxyOrigin) {
|
||||||
|
const proxyHost = new URL(proxyOrigin).host;
|
||||||
|
const replacements = [];
|
||||||
|
const seen = new Set();
|
||||||
|
|
||||||
|
const add = (from, to) => {
|
||||||
|
if (!from || to === undefined || from === to || seen.has(from)) return;
|
||||||
|
seen.add(from);
|
||||||
|
replacements.push({ from, to });
|
||||||
|
};
|
||||||
|
|
||||||
|
add(upstream.baseNoSlash, proxyOrigin);
|
||||||
|
add(upstream.base.origin, proxyOrigin);
|
||||||
|
|
||||||
|
const bareHost = upstream.base.host;
|
||||||
|
add(`"url":"${bareHost}"`, `"url":"${proxyHost}"`);
|
||||||
|
add(`"url": "${bareHost}"`, `"url": "${proxyHost}"`);
|
||||||
|
|
||||||
|
add(upstream.username, settings.proxyUsername);
|
||||||
|
add(
|
||||||
|
encodeURIComponent(upstream.username),
|
||||||
|
encodeURIComponent(settings.proxyUsername)
|
||||||
|
);
|
||||||
|
add(
|
||||||
|
encodeQueryComponent(upstream.username),
|
||||||
|
encodeQueryComponent(settings.proxyUsername)
|
||||||
|
);
|
||||||
|
|
||||||
|
add(upstream.password, settings.proxyPassword);
|
||||||
|
add(
|
||||||
|
encodeURIComponent(upstream.password),
|
||||||
|
encodeURIComponent(settings.proxyPassword)
|
||||||
|
);
|
||||||
|
add(
|
||||||
|
encodeQueryComponent(upstream.password),
|
||||||
|
encodeQueryComponent(settings.proxyPassword)
|
||||||
|
);
|
||||||
|
|
||||||
|
return replacements;
|
||||||
|
}
|
||||||
|
|
||||||
|
function rewriteUrlValue(value, upstream, proxyOrigin) {
|
||||||
|
if (typeof value !== 'string') return value;
|
||||||
|
let result = value;
|
||||||
|
for (const { from, to } of buildReplacements(upstream, proxyOrigin)) {
|
||||||
|
result = result.split(from).join(to);
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
function isRewritableContentType(contentType) {
|
||||||
|
if (!contentType) return false;
|
||||||
|
const type = contentType.split(';')[0].trim().toLowerCase();
|
||||||
|
return (
|
||||||
|
type.startsWith('text/') ||
|
||||||
|
type === 'application/json' ||
|
||||||
|
type === 'application/xml' ||
|
||||||
|
type === 'application/javascript' ||
|
||||||
|
type === 'application/x-mpegurl' ||
|
||||||
|
type === 'application/vnd.apple.mpegurl' ||
|
||||||
|
type === 'audio/mpegurl' ||
|
||||||
|
type === 'audio/x-mpegurl' ||
|
||||||
|
type === 'application/octet-stream'
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
function shouldRewriteBody(req, upstreamResponse) {
|
||||||
|
if (req.method === 'HEAD') return false;
|
||||||
|
if (
|
||||||
|
upstreamResponse.statusCode === 204 ||
|
||||||
|
upstreamResponse.statusCode === 304
|
||||||
|
) {
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
const encoding = upstreamResponse.headers['content-encoding'];
|
||||||
|
if (encoding && encoding.toLowerCase() !== 'identity') return false;
|
||||||
|
return isRewritableContentType(upstreamResponse.headers['content-type']);
|
||||||
|
}
|
||||||
|
|
||||||
|
function filterHopByHop(headers) {
|
||||||
|
const result = {};
|
||||||
|
if (!headers) return result;
|
||||||
|
for (const [key, value] of Object.entries(headers)) {
|
||||||
|
if (value === undefined) continue;
|
||||||
|
if (HOP_BY_HOP.has(key.toLowerCase())) continue;
|
||||||
|
result[key] = value;
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
function filterResponseHeaders(headers, rewriting) {
|
||||||
|
const result = {};
|
||||||
|
for (const [key, value] of Object.entries(headers)) {
|
||||||
|
if (value === undefined) continue;
|
||||||
|
const lower = key.toLowerCase();
|
||||||
|
if (HOP_BY_HOP.has(lower)) continue;
|
||||||
|
if (
|
||||||
|
rewriting &&
|
||||||
|
(lower === 'content-length' ||
|
||||||
|
lower === 'etag' ||
|
||||||
|
lower === 'content-md5')
|
||||||
|
) {
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
result[key] = value;
|
||||||
|
}
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
function isStreamPath(pathname) {
|
||||||
|
return STREAM_PATH.test(pathname) || STREAM_EXT.test(pathname);
|
||||||
|
}
|
||||||
|
|
||||||
|
function extractCreds(reqUrl) {
|
||||||
|
const queryUsername = reqUrl.searchParams.get('username');
|
||||||
|
const queryPassword = reqUrl.searchParams.get('password');
|
||||||
|
const hasQueryCreds = queryUsername !== null || queryPassword !== null;
|
||||||
|
|
||||||
|
const rawSegments = reqUrl.pathname.split('/');
|
||||||
|
const decodedSegments = rawSegments.map((segment) => {
|
||||||
|
try {
|
||||||
|
return decodeURIComponent(segment);
|
||||||
|
} catch {
|
||||||
|
return segment;
|
||||||
|
}
|
||||||
|
});
|
||||||
|
|
||||||
|
const pathUsername = decodedSegments.includes(settings.proxyUsername);
|
||||||
|
const pathPassword = decodedSegments.includes(settings.proxyPassword);
|
||||||
|
|
||||||
|
return {
|
||||||
|
queryUsername,
|
||||||
|
queryPassword,
|
||||||
|
hasQueryCreds,
|
||||||
|
rawSegments,
|
||||||
|
hasPathCreds: pathUsername && pathPassword,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
function isAuthenticated(creds) {
|
||||||
|
if (creds.hasQueryCreds) {
|
||||||
|
return (
|
||||||
|
creds.queryUsername === settings.proxyUsername &&
|
||||||
|
creds.queryPassword === settings.proxyPassword
|
||||||
|
);
|
||||||
|
}
|
||||||
|
return creds.hasPathCreds;
|
||||||
|
}
|
||||||
|
|
||||||
|
function rewritePath(creds, upstream) {
|
||||||
|
return creds.rawSegments
|
||||||
|
.map((segment) => {
|
||||||
|
let decoded = segment;
|
||||||
|
try {
|
||||||
|
decoded = decodeURIComponent(segment);
|
||||||
|
} catch {}
|
||||||
|
if (decoded === settings.proxyUsername) {
|
||||||
|
return encodeURIComponent(upstream.username);
|
||||||
|
}
|
||||||
|
if (decoded === settings.proxyPassword) {
|
||||||
|
return encodeURIComponent(upstream.password);
|
||||||
|
}
|
||||||
|
return segment;
|
||||||
|
})
|
||||||
|
.join('/');
|
||||||
|
}
|
||||||
|
|
||||||
|
function rewriteSearch(reqUrl, upstream) {
|
||||||
|
const params = new URLSearchParams(reqUrl.searchParams);
|
||||||
|
if (params.has('username')) params.set('username', upstream.username);
|
||||||
|
if (params.has('password')) params.set('password', upstream.password);
|
||||||
|
const search = params.toString();
|
||||||
|
return search ? `?${search}` : '';
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = {
|
||||||
|
ReplaceStream,
|
||||||
|
buildReplacements,
|
||||||
|
rewriteUrlValue,
|
||||||
|
shouldRewriteBody,
|
||||||
|
filterHopByHop,
|
||||||
|
filterResponseHeaders,
|
||||||
|
isStreamPath,
|
||||||
|
extractCreds,
|
||||||
|
isAuthenticated,
|
||||||
|
rewritePath,
|
||||||
|
rewriteSearch,
|
||||||
|
};
|
||||||
@@ -0,0 +1,35 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const settings = {
|
||||||
|
listenPort: Number(process.env.LISTEN_PORT || 8080),
|
||||||
|
configFile: process.env.CONFIG_FILE || '/config/upstreams.json',
|
||||||
|
proxyUsername:
|
||||||
|
process.env.PROXY_USERNAME || process.env.XTREAM_USERNAME || '',
|
||||||
|
proxyPassword:
|
||||||
|
process.env.PROXY_PASSWORD || process.env.XTREAM_PASSWORD || '',
|
||||||
|
probeIntervalSec: Math.max(
|
||||||
|
5,
|
||||||
|
Number(process.env.PROBE_INTERVAL_SEC || 30) || 30
|
||||||
|
),
|
||||||
|
probeTimeoutMs: Math.max(
|
||||||
|
1000,
|
||||||
|
Number(process.env.PROBE_TIMEOUT_MS || 8000) || 8000
|
||||||
|
),
|
||||||
|
upstreamTimeoutMs: Math.max(
|
||||||
|
1000,
|
||||||
|
Number(process.env.UPSTREAM_TIMEOUT_MS || 15000) || 15000
|
||||||
|
),
|
||||||
|
rejectUnauthorized: process.env.PROXY_INSECURE_TLS !== '1',
|
||||||
|
allowBusyFallback: process.env.ALLOW_BUSY_FALLBACK !== '0',
|
||||||
|
userAgent: process.env.USER_AGENT || 'xtream-proxy/2.0',
|
||||||
|
};
|
||||||
|
|
||||||
|
function validate() {
|
||||||
|
if (!settings.proxyUsername || !settings.proxyPassword) {
|
||||||
|
throw new Error(
|
||||||
|
'PROXY_USERNAME and PROXY_PASSWORD (or XTREAM_USERNAME / XTREAM_PASSWORD) are required'
|
||||||
|
);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { settings, validate };
|
||||||
@@ -0,0 +1,51 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
function nowIso() {
|
||||||
|
return new Date().toISOString();
|
||||||
|
}
|
||||||
|
|
||||||
|
function baseState() {
|
||||||
|
return {
|
||||||
|
healthy: false,
|
||||||
|
busy: false,
|
||||||
|
latencyMs: null,
|
||||||
|
activeCons: null,
|
||||||
|
maxCons: null,
|
||||||
|
status: null,
|
||||||
|
auth: null,
|
||||||
|
error: null,
|
||||||
|
lastChecked: nowIso(),
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
class Upstream {
|
||||||
|
constructor({ url, username, password }) {
|
||||||
|
const parsed = new URL(url);
|
||||||
|
parsed.hash = '';
|
||||||
|
parsed.search = '';
|
||||||
|
this.base = parsed;
|
||||||
|
this.basePath = parsed.pathname.replace(/\/+$/, '');
|
||||||
|
this.username = username;
|
||||||
|
this.password = password;
|
||||||
|
this.key = `${parsed.origin}${this.basePath}|${username}|${password}`;
|
||||||
|
this.state = { ...baseState(), inFlight: 0 };
|
||||||
|
}
|
||||||
|
|
||||||
|
get label() {
|
||||||
|
return `${this.base.origin}${this.basePath}`;
|
||||||
|
}
|
||||||
|
|
||||||
|
get baseNoSlash() {
|
||||||
|
return `${this.base.origin}${this.basePath}`;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function buildUpstreamUrl(upstream, pathname, search) {
|
||||||
|
const p = pathname.startsWith('/') ? pathname : `/${pathname}`;
|
||||||
|
const target = new URL(upstream.base.origin);
|
||||||
|
target.pathname = `${upstream.basePath}${p}` || '/';
|
||||||
|
target.search = search || '';
|
||||||
|
return target;
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = { Upstream, baseState, nowIso, buildUpstreamUrl };
|
||||||
@@ -0,0 +1,163 @@
|
|||||||
|
'use strict';
|
||||||
|
|
||||||
|
const { settings } = require('./settings');
|
||||||
|
const { reloadConfig, getUpstreams } = require('./config');
|
||||||
|
const { probeUpstream } = require('./probe');
|
||||||
|
|
||||||
|
let lastProbeAt = null;
|
||||||
|
let probing = false;
|
||||||
|
let probeTimer = null;
|
||||||
|
|
||||||
|
function nowIso() {
|
||||||
|
return new Date().toISOString();
|
||||||
|
}
|
||||||
|
|
||||||
|
function effectiveLoad(upstream) {
|
||||||
|
return Math.max(
|
||||||
|
upstream.state.activeCons || 0,
|
||||||
|
upstream.state.inFlight || 0
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
function isBusy(upstream) {
|
||||||
|
const max = upstream.state.maxCons;
|
||||||
|
if (max === null || max <= 0) return false;
|
||||||
|
return effectiveLoad(upstream) >= max;
|
||||||
|
}
|
||||||
|
|
||||||
|
function rankedUpstreams() {
|
||||||
|
return getUpstreams()
|
||||||
|
.filter((u) => u.state.healthy)
|
||||||
|
.map((u) => ({ upstream: u, busy: isBusy(u) }))
|
||||||
|
.sort((a, b) => {
|
||||||
|
if (a.busy !== b.busy) return a.busy ? 1 : -1;
|
||||||
|
const la = a.upstream.state.latencyMs ?? Infinity;
|
||||||
|
const lb = b.upstream.state.latencyMs ?? Infinity;
|
||||||
|
return la - lb;
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
function selectUpstream(exclude = new Set()) {
|
||||||
|
const candidates = rankedUpstreams().filter(
|
||||||
|
({ upstream }) => !exclude.has(upstream.key)
|
||||||
|
);
|
||||||
|
|
||||||
|
const idle = candidates.find((c) => !c.busy);
|
||||||
|
if (idle) return idle.upstream;
|
||||||
|
|
||||||
|
if (settings.allowBusyFallback) {
|
||||||
|
const fallback = candidates.find((c) => c.busy);
|
||||||
|
if (fallback) return fallback.upstream;
|
||||||
|
}
|
||||||
|
|
||||||
|
return null;
|
||||||
|
}
|
||||||
|
|
||||||
|
function describeUpstream(upstream) {
|
||||||
|
return {
|
||||||
|
url: upstream.label,
|
||||||
|
healthy: upstream.state.healthy,
|
||||||
|
busy: isBusy(upstream),
|
||||||
|
latencyMs: upstream.state.latencyMs,
|
||||||
|
activeCons: upstream.state.activeCons,
|
||||||
|
maxCons: upstream.state.maxCons,
|
||||||
|
inFlight: upstream.state.inFlight,
|
||||||
|
status: upstream.state.status,
|
||||||
|
error: upstream.state.error,
|
||||||
|
lastChecked: upstream.state.lastChecked,
|
||||||
|
};
|
||||||
|
}
|
||||||
|
|
||||||
|
function logProbeResults(snapshot) {
|
||||||
|
if (snapshot.length === 0) {
|
||||||
|
console.warn(`No upstreams configured in ${settings.configFile}`);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
const ranked = rankedUpstreams();
|
||||||
|
const lines = ranked.map(({ upstream, busy }, index) => {
|
||||||
|
const load = `${upstream.state.activeCons ?? '?'}/${upstream.state.maxCons ?? '?'}`;
|
||||||
|
return `${index + 1}. ${upstream.label} ${upstream.state.latencyMs ?? '?'}ms ${
|
||||||
|
busy ? `busy(${load})` : 'idle'
|
||||||
|
}${upstream.state.inFlight ? ` inflight=${upstream.state.inFlight}` : ''}`;
|
||||||
|
});
|
||||||
|
|
||||||
|
const failed = snapshot.filter((u) => !u.state.healthy);
|
||||||
|
if (failed.length) {
|
||||||
|
lines.push(
|
||||||
|
...failed.map((u) => `x. ${u.label} ${u.state.error || 'unhealthy'}`)
|
||||||
|
);
|
||||||
|
}
|
||||||
|
console.log(`Probe results:\n ${lines.join('\n ')}`);
|
||||||
|
}
|
||||||
|
|
||||||
|
async function probeCycle() {
|
||||||
|
if (probing) return;
|
||||||
|
probing = true;
|
||||||
|
|
||||||
|
try {
|
||||||
|
reloadConfig();
|
||||||
|
const snapshot = getUpstreams().slice();
|
||||||
|
const results = await Promise.all(
|
||||||
|
snapshot.map(async (upstream) => ({
|
||||||
|
upstream,
|
||||||
|
state: await probeUpstream(upstream),
|
||||||
|
}))
|
||||||
|
);
|
||||||
|
|
||||||
|
for (const { upstream, state } of results) {
|
||||||
|
upstream.state = { ...upstream.state, ...state };
|
||||||
|
}
|
||||||
|
|
||||||
|
lastProbeAt = nowIso();
|
||||||
|
logProbeResults(snapshot);
|
||||||
|
} catch (e) {
|
||||||
|
console.error('Probe cycle failed:', e);
|
||||||
|
} finally {
|
||||||
|
probing = false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function scheduleProbe(delayMs) {
|
||||||
|
if (probeTimer) {
|
||||||
|
clearTimeout(probeTimer);
|
||||||
|
probeTimer = null;
|
||||||
|
}
|
||||||
|
probeTimer = setTimeout(async () => {
|
||||||
|
probeTimer = null;
|
||||||
|
await probeCycle();
|
||||||
|
scheduleProbe(settings.probeIntervalSec * 1000);
|
||||||
|
}, delayMs);
|
||||||
|
}
|
||||||
|
|
||||||
|
function startProbing() {
|
||||||
|
scheduleProbe(settings.probeIntervalSec * 1000);
|
||||||
|
}
|
||||||
|
|
||||||
|
function stopProbing() {
|
||||||
|
if (probeTimer) {
|
||||||
|
clearTimeout(probeTimer);
|
||||||
|
probeTimer = null;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
function requestProbeSoon() {
|
||||||
|
if (probing) return;
|
||||||
|
scheduleProbe(1000);
|
||||||
|
}
|
||||||
|
|
||||||
|
function getLastProbeAt() {
|
||||||
|
return lastProbeAt;
|
||||||
|
}
|
||||||
|
|
||||||
|
module.exports = {
|
||||||
|
probeCycle,
|
||||||
|
startProbing,
|
||||||
|
stopProbing,
|
||||||
|
requestProbeSoon,
|
||||||
|
selectUpstream,
|
||||||
|
rankedUpstreams,
|
||||||
|
isBusy,
|
||||||
|
describeUpstream,
|
||||||
|
getLastProbeAt,
|
||||||
|
};
|
||||||
@@ -0,0 +1,19 @@
|
|||||||
|
#
|
||||||
|
# Every entry must point to an Xtream-compatible panel that serves the same
|
||||||
|
# content. The proxy probes each entry via /player_api.php and picks the
|
||||||
|
# fastest one that is not at its connection limit.
|
||||||
|
#
|
||||||
|
# The URL may include a path prefix, e.g. https://example.com/portal
|
||||||
|
#
|
||||||
|
[
|
||||||
|
{
|
||||||
|
"url": "http://panel1.example.com:8080",
|
||||||
|
"username": "user1",
|
||||||
|
"password": "pass1"
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"url": "https://panel2.example.com",
|
||||||
|
"username": "user2",
|
||||||
|
"password": "pass2"
|
||||||
|
}
|
||||||
|
]
|
||||||
Reference in new issue
Block a user