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Show HN: Vibe, a single-header C networking library for Linux
I wrote vibe, a small single-header C library for framed TCP and Unix-domain-socket messaging on Linux:<p><a href="https://github.com/xtellect/vibe" rel="nofollow">https://github.com/xtellect/vibe</a><p>It uses one background epoll thread. Application code polls an inbox queue for CONNECTED, DATA, and DISCONNECTED events, and sends through per-connection outboxes.<p>The pieces I wanted:<p>- TCP or Unix stream sockets - 4-byte length-prefixed messages - non-blocking application-side polling - single-copy fan-out via refcounted payload chunks - explicit per-connection backpressure instead of unbounded queues<p>For multicast, the payload is copied once into a refcounted chunk, then queued by reference to each recipient. A 1 KB message to 1,000 peers is one payload allocation/copy plus 1,000 queue nodes, not 1,000 payload copies.<p>It is Linux-only for now: epoll, eventfd, accept4, and Linux abstract Unix sockets. No UDP, TLS, HTTP, or WebSocket layer.<p>This is not meant to be a full networking framework. I’m posting mainly for your inputs/revies, especially around connection lifetimes, backpressure accounting, edge cases, and the queue design.<p>Apache 2.0.
Vibe is currently a niche open-source utility library rather than a commercial startup, demonstrating technical competence in systems programming but lacking a clear business model or market traction. While the implementation of single-copy fan-out and backpressure is well-engineered, the project faces intense competition from established networking frameworks and lacks the cross-platform support necessary for broad adoption.