115 lines
3.3 KiB
JavaScript
115 lines
3.3 KiB
JavaScript
const WebSocket = require('ws');
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const ssh2 = require('ssh2');
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const http = require('http');
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// Create an HTTP server
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const server = http.createServer((req, res) => {
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res.writeHead(200, { 'Content-Type': 'text/plain' });
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res.end('WebSocket server is running\n');
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});
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// Create a WebSocket server
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const wss = new WebSocket.Server({ server });
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wss.on('connection', (ws) => {
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console.log('WebSocket connection established');
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let conn = null;
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// Ping-Pong for WebSocket Keep-Alives
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const interval = setInterval(() => {
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if (ws.readyState === WebSocket.OPEN) {
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ws.ping();
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} else {
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clearInterval(interval);
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}
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}, 15000); // Send a ping every 15 seconds
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ws.on('pong', () => {
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console.log('Received pong from client');
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});
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ws.on('message', (message) => {
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try {
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const data = JSON.parse(message);
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if (data.host && data.username && data.password) {
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if (conn) {
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conn.end();
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}
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conn = new ssh2.Client();
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conn
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.on('ready', () => {
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console.log('SSH Connection established');
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conn.shell((err, stream) => {
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if (err) {
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ws.send(`Error: ${err.message}`);
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return;
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}
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stream.on('data', (data) => {
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ws.send(data.toString());
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});
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stream.on('close', () => {
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console.log('SSH Stream closed');
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conn.end();
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});
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// Forward user input and resize events to the SSH stream
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ws.on('message', (message) => {
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let data;
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// Try parsing the message as JSON
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try {
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data = JSON.parse(message);
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} catch (err) {
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// If it's not JSON, it's likely user input. Forward it to the SSH stream.
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console.log('User Input:', message);
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stream.write(message);
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return; // Exit early since it's user input
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}
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// If it's a resize event, handle it
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if (data.type === 'resize' && data.rows && data.cols) {
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console.log('Resize event received:', data);
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stream.setWindow(data.rows, data.cols, data.height, data.width);
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}
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});
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});
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})
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.on('error', (err) => {
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console.log('SSH Error:', err.message);
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ws.send(`SSH Error: ${err.message}`);
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})
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.on('close', () => {
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console.log('SSH Connection closed');
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})
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.connect({
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host: data.host,
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port: 22,
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username: data.username,
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password: data.password,
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keepaliveInterval: 20000, // Send SSH keepalive every 20 seconds
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keepaliveCountMax: 5, // Allow 5 missed keepalives before disconnecting
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});
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}
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} catch (error) {
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console.log('Non-JSON message received:', message);
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}
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});
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ws.on('close', () => {
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console.log('WebSocket closed');
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clearInterval(interval);
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if (conn) {
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conn.end();
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}
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});
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});
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// Start the server
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server.listen(8081, () => {
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console.log('WebSocket server is running on ws://localhost:8081');
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}); |