xtaci/smux

Health v2 · maintenance only

Adoption not part of the score

1602 stars · 229 forks observed · 2026-08-28

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

Smux is a stream multiplexing library for Go that runs many logical streams over a single reliable connection such as TCP or KCP. It minimizes memory usage through a shared session-wide receive buffer, token-bucket flow control, and a slab-style frame allocator.

Use cases

• multiplex many logical streams over a single TCP connection
• reduce connection overhead for tunnel or proxy software
• power connection management for KCP-based transports
• control memory usage across thousands of concurrent streams
• implement fair bandwidth sharing between streams
• build reliable ordered streams over custom io.ReadWriteCloser transports

When to choose

• you need many concurrent streams over one connection in Go with low memory overhead
• you are building on kcp-go or a similar reliable underlying transport
• you need net.Conn-compatible streams with built-in flow control and traffic shaping

When to avoid

• you need HTTP/2 or gRPC-level multiplexing with request semantics
• your underlying transport is unreliable and you are not using KCP
• you work outside the Go ecosystem

Facets

library · maturity stable

networking concurrency middleware networking developer-tools microservices go cross-platform stream-multiplexing multiplexing kcp tcp flow-control net-conn

Member repositories

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markdown · JSON · MCP: product_card(name="xtaci/smux")