detector/readme.hints.md

Project Readme Hints

Project Overview

• @uptime.link/detector - A network detection utility that checks port availability and service types locally
• Version: 2.0.2 (recently updated from 2.0.1)
• Type: ESM module (switched from CommonJS in v2.0.0)
• Main purpose: Detect if ports are active/available and identify service types without external services

Key Components

1. Detector Class (ts/detector.classes.detector.ts):

   • isActive(urlArg: string, options?: IDetectorOptions): Returns detailed IDetectorResult with service type detection
   • isActiveSimple(urlArg: string): Returns boolean for backward compatibility
   • detectType(urlArg: string): Detects service type (HTTP, HTTPS, SSH, FTP, etc.)
   • For localhost: Uses isLocalPortUnused() (inverted to check if port is active)
   • For remote: Uses isRemotePortAvailable()

2. Service Detection Features:

   • HTTP/HTTPS protocol detection with TLS support
   • SSH service identification via banner detection
   • Service fingerprinting for common protocols (FTP, SMTP, MySQL, etc.)
   • Banner grabbing for unknown services
   • Support for custom timeout configuration

3. Dependencies (ts/detector.plugins.ts):

   • @push.rocks/smartnetwork: Network utilities for port checking
   • @push.rocks/smarturl: URL parsing utilities
   • Node.js built-ins: net, tls, http, https for protocol detection

4. Interfaces (ts/detector.interfaces.ts):

   • ServiceType: Enum of supported service types
   • IDetectorResult: Detailed result object with service info
   • IDetectorOptions: Configuration options for detection

Recent Changes

• v2.0.0: Breaking change - switched to ESM modules
• v2.0.1: Minor update to commitinfo
• v2.0.2: Added service type detection, protocol fingerprinting, and enhanced API

Testing

• Tests check for closed local ports and open remote ports
• Tests verify service type detection for HTTP/HTTPS
• Tests check SSH service detection
• Uses @git.zone/tstest with tap-style testing
• Example tests: localhost:3008 (expects closed), lossless.com (expects open)

Notes

• Project uses pnpm for package management
• Build supports web targets (--web flag)
• No external online services required for detection
• All network detection happens locally without third-party APIs