A high-performance BitTorrent client and library written in Go, optimized for server environments and production workloads.
Rain is a high-performance BitTorrent client and library written in Go, designed specifically for server environments and production workloads. It solves the need for a reliable, resource-efficient torrent engine that can handle thousands of concurrent downloads with minimal system overhead. The project includes both a command-line client and an embeddable library, making it suitable for both end-users and developers building torrent-based applications.
Developers and system administrators who need a robust, server-optimized BitTorrent solution for handling large-scale torrent operations, such as media processing platforms, seedbox providers, or applications requiring embedded torrent functionality.
Developers choose Rain for its proven production stability, efficient resource usage, and clean Go API. Its unique server-first design, separate-port-per-torrent architecture, and focus on essential features make it a reliable alternative to desktop-oriented clients for backend services.
🌧 BitTorrent client and library in Go
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Running at put.io since 2019, processing thousands of torrents daily with minimal resource consumption, demonstrating reliability in high-load server environments.
Includes built-in controls for connections, memory, and file handles to prevent system overload, optimized for handling hundreds of concurrent torrents.
Offers a layered architecture with clear separation between core torrent logic and networking, making it easy to embed as a library in Go applications.
Provides a JSON-RPC 2.0 server and client for seamless remote management and integration into other systems or scripts.
Uses BoltDB for persistent resume data, enabling quick recovery after restarts without losing download progress, as highlighted in the features.
Intentionally omits several BitTorrent extensions like IPv6 support, uPNP, selective downloading, and sequential downloading, which may be essential for some users.
Primarily developed for put.io's needs, so feature requests not aligning with their use case are likely rejected, limiting community-driven enhancements.
Lacks a graphical user interface beyond the interactive console UI, which may not satisfy users accustomed to desktop clients with visual features.
Requires YAML configuration for customization, and the unique separate-port-per-torrent design can complicate network setup for novice users.