Module wire 

What left the process, and bounded reading of what came back.

SentTracker knows whether any request byte may have left the process. It is a one-way state machine shared between the connection and the attempt: the connection must win SentTracker::begin_write before its first request byte, and the attempt wins SentTracker::try_abort only if no write ever began, after which none can. That is what lets an adapter acknowledge stopped for an unsent request without a race (spec 009, 3.4.3). Handshake bytes (TLS) are below the tracked layer and are not request bytes.

Structs

IoHooks

What a tracked stream reports to: the exchange’s SentTracker and, under an enabled phase policy, its phase clock (spec 020, 3.4). A pooled connection (spec 020, 3.5) carries several exchanges, one at a time, so its hooks are swapped for each.

SentTracker

Whether request bytes may have left the process. Clones share state.

TrackedIo

A stream whose writes are tracked by a SentTracker. Wrap the layer that carries request bytes: plain TCP, or the plaintext side of TLS.

Functions

digest_bytes

sha256: and the lowercase hex digest of bytes, for exchange records.

Type Aliases

SharedHooks

Hooks shared by a stream and the exchanges that use it.