Add tests for connect-disconnect and error handling in SmartProxy
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279
test/test.connection-cleanup-comprehensive.node.ts
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279
test/test.connection-cleanup-comprehensive.node.ts
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import { tap, expect } from '@git.zone/tstest/tapbundle';
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import * as net from 'net';
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import * as plugins from '../ts/plugins.js';
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// Import SmartProxy and configurations
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import { SmartProxy } from '../ts/index.js';
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tap.test('comprehensive connection cleanup test - all scenarios', async () => {
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console.log('\n=== Comprehensive Connection Cleanup Test ===');
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// Create a SmartProxy instance
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const proxy = new SmartProxy({
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ports: [8570, 8571], // One for immediate routing, one for TLS
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enableDetailedLogging: false,
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initialDataTimeout: 2000,
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socketTimeout: 5000,
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routes: [
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{
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name: 'non-tls-route',
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match: { ports: 8570 },
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action: {
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type: 'forward',
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target: {
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host: 'localhost',
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port: 9999 // Non-existent port
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}
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}
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},
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{
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name: 'tls-route',
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match: { ports: 8571 },
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action: {
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type: 'forward',
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target: {
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host: 'localhost',
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port: 9999 // Non-existent port
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},
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tls: {
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mode: 'passthrough'
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}
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}
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}
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]
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});
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// Start the proxy
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await proxy.start();
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console.log('✓ Proxy started on ports 8570 (non-TLS) and 8571 (TLS)');
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// Helper to get active connection count
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const getActiveConnections = () => {
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const connectionManager = (proxy as any).connectionManager;
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return connectionManager ? connectionManager.getConnectionCount() : 0;
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};
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const initialCount = getActiveConnections();
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console.log(`Initial connection count: ${initialCount}`);
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// Test 1: Rapid ECONNREFUSED retries (from original issue)
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console.log('\n--- Test 1: Rapid ECONNREFUSED retries ---');
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for (let i = 0; i < 10; i++) {
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await new Promise<void>((resolve) => {
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const client = new net.Socket();
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client.on('error', () => {
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client.destroy();
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resolve();
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});
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client.on('close', () => {
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resolve();
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});
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client.connect(8570, 'localhost', () => {
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// Send data to trigger routing
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client.write('GET / HTTP/1.1\r\nHost: test.com\r\n\r\n');
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});
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setTimeout(() => {
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if (!client.destroyed) {
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client.destroy();
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}
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resolve();
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}, 100);
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});
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if ((i + 1) % 5 === 0) {
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const count = getActiveConnections();
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console.log(`After ${i + 1} ECONNREFUSED retries: ${count} active connections`);
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}
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}
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// Test 2: Connect without sending data (immediate disconnect)
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console.log('\n--- Test 2: Connect without sending data ---');
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for (let i = 0; i < 10; i++) {
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const client = new net.Socket();
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client.on('error', () => {
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// Ignore
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});
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// Connect to non-TLS port and immediately disconnect
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client.connect(8570, 'localhost', () => {
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client.destroy();
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});
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await new Promise(resolve => setTimeout(resolve, 10));
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}
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const afterNoData = getActiveConnections();
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console.log(`After connect-without-data test: ${afterNoData} active connections`);
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// Test 3: TLS connections that disconnect before handshake
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console.log('\n--- Test 3: TLS early disconnect ---');
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for (let i = 0; i < 10; i++) {
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const client = new net.Socket();
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client.on('error', () => {
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// Ignore
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});
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// Connect to TLS port but disconnect before sending handshake
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client.connect(8571, 'localhost', () => {
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// Wait 50ms then disconnect (before initial data timeout)
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setTimeout(() => {
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client.destroy();
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}, 50);
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});
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await new Promise(resolve => setTimeout(resolve, 100));
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}
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const afterTlsEarly = getActiveConnections();
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console.log(`After TLS early disconnect test: ${afterTlsEarly} active connections`);
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// Test 4: Mixed pattern - simulating real-world chaos
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console.log('\n--- Test 4: Mixed chaos pattern ---');
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const promises = [];
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for (let i = 0; i < 30; i++) {
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promises.push(new Promise<void>((resolve) => {
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const client = new net.Socket();
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const port = i % 2 === 0 ? 8570 : 8571;
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client.on('error', () => {
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resolve();
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});
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client.on('close', () => {
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resolve();
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});
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client.connect(port, 'localhost', () => {
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const scenario = i % 5;
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switch (scenario) {
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case 0:
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// Immediate disconnect
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client.destroy();
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break;
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case 1:
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// Send data then disconnect
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client.write('GET / HTTP/1.1\r\nHost: test.com\r\n\r\n');
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setTimeout(() => client.destroy(), 20);
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break;
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case 2:
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// Disconnect after delay
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setTimeout(() => client.destroy(), 100);
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break;
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case 3:
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// Send partial TLS handshake
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if (port === 8571) {
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client.write(Buffer.from([0x16, 0x03, 0x01])); // Partial TLS
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}
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setTimeout(() => client.destroy(), 50);
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break;
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case 4:
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// Just let it timeout
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break;
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}
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});
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// Failsafe
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setTimeout(() => {
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if (!client.destroyed) {
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client.destroy();
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}
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resolve();
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}, 500);
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}));
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// Small delay between connections
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if (i % 5 === 0) {
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await new Promise(resolve => setTimeout(resolve, 10));
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}
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}
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await Promise.all(promises);
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console.log('✓ Chaos test completed');
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// Wait for any cleanup
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await new Promise(resolve => setTimeout(resolve, 1000));
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const afterChaos = getActiveConnections();
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console.log(`After chaos test: ${afterChaos} active connections`);
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// Test 5: NFTables route (should cleanup properly)
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console.log('\n--- Test 5: NFTables route cleanup ---');
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const nftProxy = new SmartProxy({
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ports: [8572],
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enableDetailedLogging: false,
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routes: [{
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name: 'nftables-route',
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match: { ports: 8572 },
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action: {
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type: 'forward',
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forwardingEngine: 'nftables',
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target: {
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host: 'localhost',
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port: 9999
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}
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}
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}]
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});
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await nftProxy.start();
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const getNftConnections = () => {
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const connectionManager = (nftProxy as any).connectionManager;
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return connectionManager ? connectionManager.getConnectionCount() : 0;
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};
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// Create NFTables connections
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for (let i = 0; i < 5; i++) {
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const client = new net.Socket();
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client.on('error', () => {
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// Ignore
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});
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client.connect(8572, 'localhost', () => {
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setTimeout(() => client.destroy(), 50);
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});
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await new Promise(resolve => setTimeout(resolve, 100));
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}
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await new Promise(resolve => setTimeout(resolve, 500));
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const nftFinal = getNftConnections();
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console.log(`NFTables connections after test: ${nftFinal}`);
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await nftProxy.stop();
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// Final check on main proxy
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const finalCount = getActiveConnections();
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console.log(`\nFinal connection count: ${finalCount}`);
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// Stop the proxy
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await proxy.stop();
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console.log('✓ Proxy stopped');
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// Verify all connections were cleaned up
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expect(finalCount).toEqual(initialCount);
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expect(afterNoData).toEqual(initialCount);
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expect(afterTlsEarly).toEqual(initialCount);
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expect(afterChaos).toEqual(initialCount);
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expect(nftFinal).toEqual(0);
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console.log('\n✅ PASS: Comprehensive connection cleanup test passed!');
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console.log('All connection scenarios properly cleaned up:');
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console.log('- ECONNREFUSED rapid retries');
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console.log('- Connect without sending data');
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console.log('- TLS early disconnect');
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console.log('- Mixed chaos patterns');
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console.log('- NFTables connections');
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});
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tap.start();
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