@push.rocks/smartproxy
Version:
A powerful proxy package with unified route-based configuration for high traffic management. Features include SSL/TLS support, flexible routing patterns, WebSocket handling, advanced security options, and automatic ACME certificate management.
502 lines • 45.6 kB
JavaScript
import * as plugins from '../../plugins.js';
import { createLogger, } from './models/types.js';
import { SharedRouteManager as RouteManager } from '../../core/routing/route-manager.js';
import { createBaseRouteContext } from '../../core/models/route-context.js';
import { CertificateManager } from './certificate-manager.js';
import { ConnectionPool } from './connection-pool.js';
import { RequestHandler } from './request-handler.js';
import { WebSocketHandler } from './websocket-handler.js';
import { HttpRouter } from '../../routing/router/index.js';
import { cleanupSocket } from '../../core/utils/socket-utils.js';
import { FunctionCache } from './function-cache.js';
import { SecurityManager } from './security-manager.js';
import { connectionLogDeduplicator } from '../../core/utils/log-deduplicator.js';
/**
* HttpProxy provides a reverse proxy with TLS termination, WebSocket support,
* automatic certificate management, and high-performance connection pooling.
* Handles all HTTP/HTTPS traffic including redirects, ACME challenges, and static routes.
*/
export class HttpProxy {
// Provide a minimal JSON representation to avoid circular references during deep equality checks
toJSON() {
return {};
}
/**
* Creates a new HttpProxy instance
*/
constructor(optionsArg) {
this.routes = [];
this.router = new HttpRouter(); // Unified HTTP router
// 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 SmartProxy 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 SmartProxy integration
connectionPoolSize: optionsArg.connectionPoolSize || 50,
portProxyIntegration: optionsArg.portProxyIntegration || false,
// Backend protocol (http1 or http2)
backendProtocol: optionsArg.backendProtocol || 'http1',
// Default ACME options
acme: {
enabled: optionsArg.acme?.enabled || false,
port: optionsArg.acme?.port || 80,
accountEmail: optionsArg.acme?.accountEmail || '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 route manager
this.routeManager = new RouteManager({
logger: this.logger,
enableDetailedLogging: this.options.logLevel === 'debug',
routes: []
});
// Initialize function cache
this.functionCache = new FunctionCache(this.logger, {
maxCacheSize: this.options.functionCacheSize || 1000,
defaultTtl: this.options.functionCacheTtl || 5000
});
// Initialize security manager
this.securityManager = new SecurityManager(this.logger, [], this.options.maxConnectionsPerIP || 100, this.options.connectionRateLimitPerMinute || 300);
// Initialize other components
this.certificateManager = new CertificateManager(this.options);
this.connectionPool = new ConnectionPool(this.options);
this.requestHandler = new RequestHandler(this.options, this.connectionPool, this.routeManager, this.functionCache, this.router);
this.webSocketHandler = new WebSocketHandler(this.options, this.connectionPool, this.routes // Pass current routes to WebSocketHandler
);
// Connect request handler to this metrics tracker
this.requestHandler.setMetricsTracker(this);
// Initialize with any provided routes
if (this.options.routes && this.options.routes.length > 0) {
this.updateRouteConfigs(this.options.routes);
}
}
/**
* 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 HttpProxy is listening on
* Useful for SmartProxy to determine where to forward connections
*/
getListeningPort() {
// If the server is running, get the actual listening port
if (this.httpsServer && this.httpsServer.address()) {
const address = this.httpsServer.address();
if (address && typeof address === 'object' && 'port' in address) {
return address.port;
}
}
// Fallback to configured port
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 SmartProxy to determine which HttpProxy 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,
functionCache: this.functionCache.getStats()
};
}
/**
* Starts the proxy server
*/
async start() {
this.startTime = Date.now();
// Create HTTP/2 server with HTTP/1 fallback
this.httpsServer = plugins.http2.createSecureServer({
key: this.certificateManager.getDefaultCertificates().key,
cert: this.certificateManager.getDefaultCertificates().cert,
allowHTTP1: true,
ALPNProtocols: ['h2', 'http/1.1']
});
// Track raw TCP connections for metrics and limits
this.setupConnectionTracking();
// Handle incoming HTTP/2 streams
this.httpsServer.on('stream', (stream, headers) => {
this.requestHandler.handleHttp2(stream, headers);
});
// Handle HTTP/1.x fallback requests
this.httpsServer.on('request', (req, res) => {
this.requestHandler.handleRequest(req, res);
});
// Share server with certificate manager for dynamic contexts
this.certificateManager.setHttpsServer(this.httpsServer);
// Setup WebSocket support on HTTP/1 fallback
this.webSocketHandler.initialize(this.httpsServer);
// Start metrics logging
this.setupMetricsCollection();
// Start periodic connection pool cleanup
this.connectionPoolCleanupInterval = this.connectionPool.setupPeriodicCleanup();
// Start the server
return new Promise((resolve) => {
this.httpsServer.listen(this.options.port, () => {
this.logger.info(`HttpProxy started on port ${this.options.port}`);
resolve();
});
});
}
/**
* Sets up tracking of TCP connections
*/
setupConnectionTracking() {
this.httpsServer.on('connection', (connection) => {
let remoteIP = connection.remoteAddress || '';
const connectionId = Math.random().toString(36).substring(2, 15);
const isFromSmartProxy = this.options.portProxyIntegration && connection.remoteAddress?.includes('127.0.0.1');
// For SmartProxy connections, wait for CLIENT_IP header
if (isFromSmartProxy) {
let headerBuffer = Buffer.alloc(0);
let headerParsed = false;
const parseHeader = (data) => {
if (headerParsed)
return data;
headerBuffer = Buffer.concat([headerBuffer, data]);
const headerStr = headerBuffer.toString();
const headerEnd = headerStr.indexOf('\r\n');
if (headerEnd !== -1) {
const header = headerStr.substring(0, headerEnd);
if (header.startsWith('CLIENT_IP:')) {
remoteIP = header.substring(10); // Extract IP after "CLIENT_IP:"
this.logger.debug(`Extracted client IP from SmartProxy: ${remoteIP}`);
}
headerParsed = true;
// Store the real IP on the connection
connection._realRemoteIP = remoteIP;
// Validate the real IP
const ipValidation = this.securityManager.validateIP(remoteIP);
if (!ipValidation.allowed) {
connectionLogDeduplicator.log('ip-rejected', 'warn', `HttpProxy connection rejected (via SmartProxy)`, { remoteIP, reason: ipValidation.reason, component: 'http-proxy' }, remoteIP);
connection.destroy();
return null;
}
// Track connection by real IP
this.securityManager.trackConnectionByIP(remoteIP, connectionId);
// Return remaining data after header
return headerBuffer.slice(headerEnd + 2);
}
return null;
};
// Override the first data handler to parse header
const originalEmit = connection.emit;
connection.emit = function (event, ...args) {
if (event === 'data' && !headerParsed) {
const remaining = parseHeader(args[0]);
if (remaining && remaining.length > 0) {
// Call original emit with remaining data
return originalEmit.apply(connection, ['data', remaining]);
}
else if (headerParsed) {
// Header parsed but no remaining data
return true;
}
// Header not complete yet, suppress this data event
return true;
}
return originalEmit.apply(connection, [event, ...args]);
};
}
else {
// Direct connection - validate immediately
const ipValidation = this.securityManager.validateIP(remoteIP);
if (!ipValidation.allowed) {
connectionLogDeduplicator.log('ip-rejected', 'warn', `HttpProxy connection rejected`, { remoteIP, reason: ipValidation.reason, component: 'http-proxy' }, remoteIP);
connection.destroy();
return;
}
// Track connection by IP
this.securityManager.trackConnectionByIP(remoteIP, connectionId);
}
// Then check global max connections
if (this.socketMap.getArray().length >= this.options.maxConnections) {
connectionLogDeduplicator.log('connection-rejected', 'warn', 'HttpProxy max connections reached', {
reason: 'global-limit',
currentConnections: this.socketMap.getArray().length,
maxConnections: this.options.maxConnections,
component: 'http-proxy'
}, 'http-proxy-global-limit');
connection.destroy();
return;
}
// Add connection to tracking with metadata
connection._connectionId = connectionId;
connection._remoteIP = remoteIP;
this.socketMap.add(connection);
this.connectedClients = this.socketMap.getArray().length;
// Check for connection from SmartProxy by inspecting the source port
const localPort = connection.localPort || 0;
const remotePort = connection.remotePort || 0;
// If this connection is from a SmartProxy
if (isFromSmartProxy) {
this.portProxyConnections++;
this.logger.debug(`New connection from SmartProxy for client ${remoteIP} (local: ${localPort}, remote: ${remotePort})`);
}
else {
this.logger.debug(`New direct connection from ${remoteIP} (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;
// Remove IP tracking
const connId = connection._connectionId;
const connIP = connection._realRemoteIP || connection._remoteIP;
if (connId && connIP) {
this.securityManager.removeConnectionByIP(connIP, connId);
}
// If this was a SmartProxy connection, decrement the counter
if (this.options.portProxyIntegration && connection.remoteAddress?.includes('127.0.0.1')) {
this.portProxyConnections--;
}
this.logger.debug(`Connection closed from ${connIP || 'unknown'}. ${this.connectedClients} connections remaining`);
}
};
connection.on('close', cleanupConnection);
connection.on('error', (err) => {
this.logger.debug('Connection error', err);
cleanupConnection();
});
connection.on('end', cleanupConnection);
});
// Track TLS handshake completions
this.httpsServer.on('secureConnection', (tlsSocket) => {
this.tlsTerminatedConnections++;
this.logger.debug('TLS handshake completed, connection secured');
});
}
/**
* Sets up metrics collection
*/
setupMetricsCollection() {
this.metricsInterval = setInterval(() => {
const uptime = Math.floor((Date.now() - this.startTime) / 1000);
const metrics = {
uptime,
activeConnections: this.connectedClients,
totalRequests: this.requestsServed,
failedRequests: this.failedRequests,
portProxyConnections: this.portProxyConnections,
tlsTerminatedConnections: this.tlsTerminatedConnections,
activeWebSockets: this.webSocketHandler.getConnectionInfo().activeConnections,
memoryUsage: process.memoryUsage(),
activeContexts: Array.from(this.activeContexts),
connectionPool: this.connectionPool.getPoolStatus()
};
this.logger.debug('Proxy metrics', metrics);
}, 60000); // Log metrics every minute
// Don't keep process alive just for metrics
if (this.metricsInterval.unref) {
this.metricsInterval.unref();
}
}
/**
* Updates the route configurations - this is the primary method for configuring HttpProxy
* @param routes The new route configurations to use
*/
async updateRouteConfigs(routes) {
this.logger.info(`Updating route configurations (${routes.length} routes)`);
// Update routes in RouteManager, modern router, WebSocketHandler, and SecurityManager
this.routeManager.updateRoutes(routes);
this.router.setRoutes(routes);
this.webSocketHandler.setRoutes(routes);
this.requestHandler.securityManager.setRoutes(routes);
this.routes = routes;
// Directly update the certificate manager with the new routes
// This will extract domains and handle certificate provisioning
this.certificateManager.updateRoutes(routes);
// Collect all domains and certificates for configuration
const currentHostnames = new Set();
const certificateUpdates = new Map();
// Process each route to extract domain and certificate information
for (const route of routes) {
// Skip non-forward routes or routes without domains
if (route.action.type !== 'forward' || !route.match.domains) {
continue;
}
// Get domains from route
const domains = Array.isArray(route.match.domains)
? route.match.domains
: [route.match.domains];
// Process each domain
for (const domain of domains) {
// Skip wildcard domains for direct host configuration
if (domain.includes('*')) {
continue;
}
currentHostnames.add(domain);
// Check if we have a static certificate for this domain
if (route.action.tls?.certificate && route.action.tls.certificate !== 'auto') {
certificateUpdates.set(domain, {
cert: route.action.tls.certificate.cert,
key: route.action.tls.certificate.key
});
}
}
}
// Update certificate cache with any static certificates
for (const [domain, certData] of certificateUpdates.entries()) {
try {
this.certificateManager.updateCertificate(domain, certData.cert, certData.key);
this.activeContexts.add(domain);
}
catch (error) {
this.logger.error(`Failed to add SSL context for ${domain}`, 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);
}
}
// Update the router with new routes
this.router.setRoutes(routes);
// Update WebSocket handler with new routes
this.webSocketHandler.setRoutes(routes);
this.logger.info(`Route configuration updated with ${routes.length} routes`);
}
// Legacy methods have been removed.
// Please use updateRouteConfigs() directly with modern route-based configuration.
/**
* 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 HttpProxy server');
// Clear intervals
if (this.metricsInterval) {
clearInterval(this.metricsInterval);
}
if (this.connectionPoolCleanupInterval) {
clearInterval(this.connectionPoolCleanupInterval);
}
// Stop WebSocket handler
this.webSocketHandler.shutdown();
// Destroy request handler (cleans up intervals and caches)
if (this.requestHandler && typeof this.requestHandler.destroy === 'function') {
this.requestHandler.destroy();
}
// Close all tracked sockets
const socketCleanupPromises = this.socketMap.getArray().map(socket => cleanupSocket(socket, 'http-proxy-stop', { immediate: true }));
await Promise.all(socketCleanupPromises);
// Close all connection pool connections
this.connectionPool.closeAllConnections();
// Certificate management cleanup is handled by SmartCertManager
// Flush any pending deduplicated logs
connectionLogDeduplicator.flushAll();
// Close the HTTPS server
return new Promise((resolve) => {
this.httpsServer.close(() => {
this.logger.info('HttpProxy 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) {
this.logger.warn('requestCertificate is deprecated - use SmartCertManager instead');
return false;
}
/**
* Update certificate for a domain
*
* This method allows direct updates of certificates from external sources
* like Port80Handler or custom certificate providers.
*
* @param domain The domain to update certificate for
* @param certificate The new certificate (public key)
* @param privateKey The new private key
* @param expiryDate Optional expiry date
*/
updateCertificate(domain, certificate, privateKey, expiryDate) {
this.logger.info(`Updating certificate for ${domain}`);
this.certificateManager.updateCertificate(domain, certificate, privateKey);
}
/**
* Gets all route configurations currently in use
*/
getRouteConfigs() {
return this.routeManager.getRoutes();
}
}
//# 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