Replaced HTTP/2 with HTTP/1.1 for improved stability

[shinoburc]

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog,
and this project adheres to Semantic Versioning.

[Unreleased]

Changed

• HTTP Implementation: Replaced HTTP/2 with HTTP/1.1 for improved stability
  • Migrated from http2 module to https/http modules
  • Removed complex HTTP/2 session management and connection pooling
  • Simplified request handling to use Node.js default global agents
  • Removed custom TCP optimization settings (TCP_NODELAY, window sizing)

Added

• HTTP Proxy Support: Added HTTP proxy configuration via environment variables
  • Support for HTTPS_PROXY, https_proxy, HTTP_PROXY, http_proxy environment variables
  • Support for NO_PROXY, no_proxy environment variables to exclude specific hosts
  • Wildcard pattern support for NO_PROXY (e.g., *.example.com)

Fixed

• Download Stability: Resolved issues where downloads would hang or stop
  • Simplified stream handling to prevent deadlocks
  • Improved error handling and timeout management
  • Added proper resource cleanup on download failures
  • Removed aggressive connection optimizations that caused stability issues

Removed

• Verbose Logging: Removed excessive download progress logging
  • Removed "Starting download", "Download completed", and "Pipeline started" messages
  • Removed detailed HTTP request/response logging
  • Kept essential error logging for debugging

Technical Details

HTTP Request Adapter Changes

• Removed HTTP/2 specific features (ping, session management, window size control)
• Simplified to use standard HTTPS requests without custom agents
• Maintained the same public interface for backward compatibility
• Added basic timeout handling (5 minutes for streams, 1 minute for regular requests)

Download Process Improvements

• Simplified stream pipeline error handling
• Removed complex AbortController implementations
• Added file cleanup on download failures
• Maintained retry logic with conservative delays

Breaking Changes

• None - all changes maintain backward compatibility with existing APIs