@push.rocks/smartproxy
Version:
A powerful proxy package that effectively handles high traffic, with features such as SSL/TLS support, port proxying, WebSocket handling, dynamic routing with authentication options, and automatic ACME certificate management.
375 lines • 32.1 kB
JavaScript
import * as plugins from '../plugins.js';
import { createLogger } from './classes.np.types.js';
import { CertificateManager } from './classes.np.certificatemanager.js';
import { ConnectionPool } from './classes.np.connectionpool.js';
import { RequestHandler } from './classes.np.requesthandler.js';
import { WebSocketHandler } from './classes.np.websockethandler.js';
import { ProxyRouter } from '../classes.router.js';
import { Port80Handler } from '../port80handler/classes.port80handler.js';
/**
* NetworkProxy provides a reverse proxy with TLS termination, WebSocket support,
* automatic certificate management, and high-performance connection pooling.
*/
export class NetworkProxy {
/**
* Creates a new NetworkProxy instance
*/
constructor(optionsArg) {
this.proxyConfigs = [];
this.router = new ProxyRouter();
// State tracking
this.socketMap = new plugins.lik.ObjectMap();
this.activeContexts = new Set();
this.connectedClients = 0;
this.startTime = 0;
this.requestsServed = 0;
this.failedRequests = 0;
// Tracking for PortProxy integration
this.portProxyConnections = 0;
this.tlsTerminatedConnections = 0;
// Set default options
this.options = {
port: optionsArg.port,
maxConnections: optionsArg.maxConnections || 10000,
keepAliveTimeout: optionsArg.keepAliveTimeout || 120000, // 2 minutes
headersTimeout: optionsArg.headersTimeout || 60000, // 1 minute
logLevel: optionsArg.logLevel || 'info',
cors: optionsArg.cors || {
allowOrigin: '*',
allowMethods: 'GET, POST, PUT, DELETE, OPTIONS',
allowHeaders: 'Content-Type, Authorization',
maxAge: 86400
},
// Defaults for PortProxy integration
connectionPoolSize: optionsArg.connectionPoolSize || 50,
portProxyIntegration: optionsArg.portProxyIntegration || false,
useExternalPort80Handler: optionsArg.useExternalPort80Handler || false,
// Default ACME options
acme: {
enabled: optionsArg.acme?.enabled || false,
port: optionsArg.acme?.port || 80,
contactEmail: optionsArg.acme?.contactEmail || 'admin@example.com',
useProduction: optionsArg.acme?.useProduction || false, // Default to staging for safety
renewThresholdDays: optionsArg.acme?.renewThresholdDays || 30,
autoRenew: optionsArg.acme?.autoRenew !== false, // Default to true
certificateStore: optionsArg.acme?.certificateStore || './certs',
skipConfiguredCerts: optionsArg.acme?.skipConfiguredCerts || false
}
};
// Initialize logger
this.logger = createLogger(this.options.logLevel);
// Initialize components
this.certificateManager = new CertificateManager(this.options);
this.connectionPool = new ConnectionPool(this.options);
this.requestHandler = new RequestHandler(this.options, this.connectionPool, this.router);
this.webSocketHandler = new WebSocketHandler(this.options, this.connectionPool, this.router);
// Connect request handler to this metrics tracker
this.requestHandler.setMetricsTracker(this);
}
/**
* Implements IMetricsTracker interface to increment request counters
*/
incrementRequestsServed() {
this.requestsServed++;
}
/**
* Implements IMetricsTracker interface to increment failed request counters
*/
incrementFailedRequests() {
this.failedRequests++;
}
/**
* Returns the port number this NetworkProxy is listening on
* Useful for PortProxy to determine where to forward connections
*/
getListeningPort() {
return this.options.port;
}
/**
* Updates the server capacity settings
* @param maxConnections Maximum number of simultaneous connections
* @param keepAliveTimeout Keep-alive timeout in milliseconds
* @param connectionPoolSize Size of the connection pool per backend
*/
updateCapacity(maxConnections, keepAliveTimeout, connectionPoolSize) {
if (maxConnections !== undefined) {
this.options.maxConnections = maxConnections;
this.logger.info(`Updated max connections to ${maxConnections}`);
}
if (keepAliveTimeout !== undefined) {
this.options.keepAliveTimeout = keepAliveTimeout;
if (this.httpsServer) {
this.httpsServer.keepAliveTimeout = keepAliveTimeout;
this.logger.info(`Updated keep-alive timeout to ${keepAliveTimeout}ms`);
}
}
if (connectionPoolSize !== undefined) {
this.options.connectionPoolSize = connectionPoolSize;
this.logger.info(`Updated connection pool size to ${connectionPoolSize}`);
// Clean up excess connections in the pool
this.connectionPool.cleanupConnectionPool();
}
}
/**
* Returns current server metrics
* Useful for PortProxy to determine which NetworkProxy to use for load balancing
*/
getMetrics() {
return {
activeConnections: this.connectedClients,
totalRequests: this.requestsServed,
failedRequests: this.failedRequests,
portProxyConnections: this.portProxyConnections,
tlsTerminatedConnections: this.tlsTerminatedConnections,
connectionPoolSize: this.connectionPool.getPoolStatus(),
uptime: Math.floor((Date.now() - this.startTime) / 1000),
memoryUsage: process.memoryUsage(),
activeWebSockets: this.webSocketHandler.getConnectionInfo().activeConnections
};
}
/**
* Sets an external Port80Handler for certificate management
* This allows the NetworkProxy to use a centrally managed Port80Handler
* instead of creating its own
*
* @param handler The Port80Handler instance to use
*/
setExternalPort80Handler(handler) {
// Connect it to the certificate manager
this.certificateManager.setExternalPort80Handler(handler);
}
/**
* Starts the proxy server
*/
async start() {
this.startTime = Date.now();
// Initialize Port80Handler if enabled and not using external handler
if (this.options.acme?.enabled && !this.options.useExternalPort80Handler) {
await this.certificateManager.initializePort80Handler();
}
// Create the HTTPS server
this.httpsServer = plugins.https.createServer({
key: this.certificateManager.getDefaultCertificates().key,
cert: this.certificateManager.getDefaultCertificates().cert,
SNICallback: (domain, cb) => this.certificateManager.handleSNI(domain, cb)
}, (req, res) => this.requestHandler.handleRequest(req, res));
// Configure server timeouts
this.httpsServer.keepAliveTimeout = this.options.keepAliveTimeout;
this.httpsServer.headersTimeout = this.options.headersTimeout;
// Setup connection tracking
this.setupConnectionTracking();
// Share HTTPS server with certificate manager
this.certificateManager.setHttpsServer(this.httpsServer);
// Setup WebSocket support
this.webSocketHandler.initialize(this.httpsServer);
// Start metrics collection
this.setupMetricsCollection();
// Setup connection pool cleanup interval
this.connectionPoolCleanupInterval = this.connectionPool.setupPeriodicCleanup();
// Start the server
return new Promise((resolve) => {
this.httpsServer.listen(this.options.port, () => {
this.logger.info(`NetworkProxy started on port ${this.options.port}`);
resolve();
});
});
}
/**
* Sets up tracking of TCP connections
*/
setupConnectionTracking() {
this.httpsServer.on('connection', (connection) => {
// Check if max connections reached
if (this.socketMap.getArray().length >= this.options.maxConnections) {
this.logger.warn(`Max connections (${this.options.maxConnections}) reached, rejecting new connection`);
connection.destroy();
return;
}
// Add connection to tracking
this.socketMap.add(connection);
this.connectedClients = this.socketMap.getArray().length;
// Check for connection from PortProxy by inspecting the source port
const localPort = connection.localPort || 0;
const remotePort = connection.remotePort || 0;
// If this connection is from a PortProxy (usually indicated by it coming from localhost)
if (this.options.portProxyIntegration && connection.remoteAddress?.includes('127.0.0.1')) {
this.portProxyConnections++;
this.logger.debug(`New connection from PortProxy (local: ${localPort}, remote: ${remotePort})`);
}
else {
this.logger.debug(`New direct connection (local: ${localPort}, remote: ${remotePort})`);
}
// Setup connection cleanup handlers
const cleanupConnection = () => {
if (this.socketMap.checkForObject(connection)) {
this.socketMap.remove(connection);
this.connectedClients = this.socketMap.getArray().length;
// If this was a PortProxy connection, decrement the counter
if (this.options.portProxyIntegration && connection.remoteAddress?.includes('127.0.0.1')) {
this.portProxyConnections--;
}
this.logger.debug(`Connection closed. ${this.connectedClients} connections remaining`);
}
};
connection.on('close', cleanupConnection);
connection.on('error', (err) => {
this.logger.debug('Connection error', err);
cleanupConnection();
});
connection.on('end', cleanupConnection);
});
// Track TLS handshake completions
this.httpsServer.on('secureConnection', (tlsSocket) => {
this.tlsTerminatedConnections++;
this.logger.debug('TLS handshake completed, connection secured');
});
}
/**
* Sets up metrics collection
*/
setupMetricsCollection() {
this.metricsInterval = setInterval(() => {
const uptime = Math.floor((Date.now() - this.startTime) / 1000);
const metrics = {
uptime,
activeConnections: this.connectedClients,
totalRequests: this.requestsServed,
failedRequests: this.failedRequests,
portProxyConnections: this.portProxyConnections,
tlsTerminatedConnections: this.tlsTerminatedConnections,
activeWebSockets: this.webSocketHandler.getConnectionInfo().activeConnections,
memoryUsage: process.memoryUsage(),
activeContexts: Array.from(this.activeContexts),
connectionPool: this.connectionPool.getPoolStatus()
};
this.logger.debug('Proxy metrics', metrics);
}, 60000); // Log metrics every minute
// Don't keep process alive just for metrics
if (this.metricsInterval.unref) {
this.metricsInterval.unref();
}
}
/**
* Updates proxy configurations
*/
async updateProxyConfigs(proxyConfigsArg) {
this.logger.info(`Updating proxy configurations (${proxyConfigsArg.length} configs)`);
// Update internal configs
this.proxyConfigs = proxyConfigsArg;
this.router.setNewProxyConfigs(proxyConfigsArg);
// Collect all hostnames for cleanup later
const currentHostNames = new Set();
// Add/update SSL contexts for each host
for (const config of proxyConfigsArg) {
currentHostNames.add(config.hostName);
try {
// Update certificate in cache
this.certificateManager.updateCertificateCache(config.hostName, config.publicKey, config.privateKey);
this.activeContexts.add(config.hostName);
}
catch (error) {
this.logger.error(`Failed to add SSL context for ${config.hostName}`, error);
}
}
// Clean up removed contexts
for (const hostname of this.activeContexts) {
if (!currentHostNames.has(hostname)) {
this.logger.info(`Hostname ${hostname} removed from configuration`);
this.activeContexts.delete(hostname);
}
}
// Register domains with Port80Handler if available
const domainsForACME = Array.from(currentHostNames)
.filter(domain => !domain.includes('*')); // Skip wildcard domains
this.certificateManager.registerDomainsWithPort80Handler(domainsForACME);
}
/**
* Converts PortProxy domain configurations to NetworkProxy configs
* @param domainConfigs PortProxy domain configs
* @param sslKeyPair Default SSL key pair to use if not specified
* @returns Array of NetworkProxy configs
*/
convertPortProxyConfigs(domainConfigs, sslKeyPair) {
const proxyConfigs = [];
// Use default certificates if not provided
const defaultCerts = this.certificateManager.getDefaultCertificates();
const sslKey = sslKeyPair?.key || defaultCerts.key;
const sslCert = sslKeyPair?.cert || defaultCerts.cert;
for (const domainConfig of domainConfigs) {
// Each domain in the domains array gets its own config
for (const domain of domainConfig.domains) {
// Skip non-hostname patterns (like IP addresses)
if (domain.match(/^\d+\.\d+\.\d+\.\d+$/) || domain === '*' || domain === 'localhost') {
continue;
}
proxyConfigs.push({
hostName: domain,
destinationIps: domainConfig.targetIPs || ['localhost'],
destinationPorts: [this.options.port], // Use the NetworkProxy port
privateKey: sslKey,
publicKey: sslCert
});
}
}
this.logger.info(`Converted ${domainConfigs.length} PortProxy configs to ${proxyConfigs.length} NetworkProxy configs`);
return proxyConfigs;
}
/**
* Adds default headers to be included in all responses
*/
async addDefaultHeaders(headersArg) {
this.logger.info('Adding default headers', headersArg);
this.requestHandler.setDefaultHeaders(headersArg);
}
/**
* Stops the proxy server
*/
async stop() {
this.logger.info('Stopping NetworkProxy server');
// Clear intervals
if (this.metricsInterval) {
clearInterval(this.metricsInterval);
}
if (this.connectionPoolCleanupInterval) {
clearInterval(this.connectionPoolCleanupInterval);
}
// Stop WebSocket handler
this.webSocketHandler.shutdown();
// Close all tracked sockets
for (const socket of this.socketMap.getArray()) {
try {
socket.destroy();
}
catch (error) {
this.logger.error('Error destroying socket', error);
}
}
// Close all connection pool connections
this.connectionPool.closeAllConnections();
// Stop Port80Handler if internally managed
await this.certificateManager.stopPort80Handler();
// Close the HTTPS server
return new Promise((resolve) => {
this.httpsServer.close(() => {
this.logger.info('NetworkProxy server stopped successfully');
resolve();
});
});
}
/**
* Requests a new certificate for a domain
* This can be used to manually trigger certificate issuance
* @param domain The domain to request a certificate for
* @returns A promise that resolves when the request is submitted (not when the certificate is issued)
*/
async requestCertificate(domain) {
return this.certificateManager.requestCertificate(domain);
}
/**
* Gets all proxy configurations currently in use
*/
getProxyConfigs() {
return [...this.proxyConfigs];
}
}
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