bittorrent/libutp

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1159 stars · 266 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

libutp is a C++ library implementing the uTorrent Transport Protocol (uTP), a TCP-like reliable transport over UDP based on LEDBAT congestion control (BEP-29). It exposes a callback-driven ANSI C89 API for event-based, low-extra-delay data transfer.

Use cases

• implement BitTorrent peer connections with uTP transport
• add LEDBAT-based low-delay reliable transfer over UDP to an application
• build event-driven networking without blocking socket calls
• transfer data between peers without saturating the user's link
• embed a reliable UDP protocol in a C or C++ application

When to choose

• you need reliable ordered delivery over UDP with minimal added delay
• you are building a BitTorrent client or P2P application
• you want a small embeddable C-API transport library
• you need LEDBAT congestion control to yield to other traffic

When to avoid

• you need a thread-safe socket API out of the box
• you require a stable, versioned API across upgrades
• you need general-purpose TCP replacement with TLS and rich features
• you want an actively developed project with frequent releases

Facets

library · maturity maintenance

networking concurrency developer-tools networking microservices cpp c windows cross-platform udp ledbat congestion-control transport-protocol bittorrent bep-29 p2p reliable-udp linux macos

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