Module mux 

HTTP/1.1 and HTTP/2 multiplexing layer.

This module unifies HTTP/1.1 and HTTP/2 behind a single Mux session state machine that integrates with sozu’s mio event loop. The key types:

• Mux: The top-level session state, generic over socket (TcpStream or FrontRustls) and listener. Implements SessionState.
• Connection: Enum dispatching to ConnectionH1 or ConnectionH2 for protocol-specific readable/writable logic.
• Stream: Per-request state with front/back kawa buffers, metrics, and lifecycle tracking. Shared between H1 and H2 paths.
• Context: Per-session context (cluster, backends, routing, timeouts).

The H2 implementation handles RFC 9113 framing, HPACK (RFC 7541), flow control, flood detection (CVE-2023-44487, CVE-2019-9512/9514/9515/9518, CVE-2024-27316), and graceful shutdown (double-GOAWAY per RFC 9113 §6.8).

Re-exports

pub use crate::protocol::mux::answers::terminate_default_answer;

pub use crate::protocol::mux::connection::Connection;

pub use crate::protocol::mux::debug::DebugEvent;

pub use crate::protocol::mux::debug::DebugHistory;

pub use crate::protocol::mux::parser::H2Error;

pub use crate::protocol::mux::router::Router;

pub use crate::protocol::mux::stream::Stream;

pub use crate::protocol::mux::stream::StreamParts;

pub use crate::protocol::mux::stream::StreamState;

Modules

answers

Default-answer helpers shared by the H1 and H2 mux paths.

auth

HTTP Basic authentication helpers shared by the H1 and H2 mux paths.

connection

Protocol-agnostic frontend/backend connection wrapper.

debug

Debug history ring buffer and event enum.

parser

H2 frame parser (nom-based).

router

Backend routing and connection reuse for the mux layer.

stream

Per-request stream state shared by the H1 and H2 mux paths.

Structs

ConnectionH1

HTTP/1.1 connection handler within the mux layer.

ConnectionH2

Context

H2ByteAccounting

Byte accounting for connection overhead attribution.

H2ConnectionConfig

Configurable H2 connection tuning parameters.

H2DrainState

Connection draining state for graceful shutdown.

H2FloodConfig

Configurable thresholds for H2 flood detection.

H2FlowControl

Connection-level flow control state (RFC 9113 §6.9).

Mux

Enums

BackendStatus

MuxResult

Position

Traits

Endpoint

Type Aliases

MuxClear

MuxTls