Module tunnel 

Request routing, the per-connection context, and the tunnel implementations.

Two concerns of this module’s own are a file each, and are re-exported from here so that tunnel::refuse and tunnel::Quota stay the paths the rest of the crate uses:

• status — refusals and the RFC 9209 vocabulary they are written in.
• quota — the per-connection tunnel budget and the guards that spend it.

Modules

tcp

TCP CONNECT tunnels (RFC 9114 §4.4).

udp

CONNECT-UDP tunnels (RFC 9298) over HTTP Datagrams (RFC 9297).

Structs

AuthFailures

The authentication failures one connection has run up, in buckets.

Context

Everything a request handler needs from the connection it arrived on.

Pending

One accepted request that has not finished, released when dropped.

Quota

One connection’s tunnel budget.

Slot

One occupied tunnel slot, released when dropped.

Enums

ProxyError

An RFC 9209 proxy error type, for the Proxy-Status field of a refusal.

Route

How a request should be handled.

Constants

CONNECTION_UNANSWERED_MULTIPLIER

How many times over a connection may spend unanswered_packet_budget before its sessions are closed instead of muted.

Functions

route

Classifies a request by method and :protocol.