Client-side 2026-07-28 support: .discover()/.adopt() + Client(mode=); request-metadata green#2950

Open

maxisbey wants to merge 16 commits into

mainfrom

s3-client-modern-path

Commits on Jun 22, 2026

Rename SUPPORTED_PROTOCOL_VERSIONS to HANDSHAKE_PROTOCOL_VERSIONS; consolidate header constant
maxisbey
committed
Thread per-message headers from session to transport via CallOptions/metadata sidecar
maxisbey
committed
ClientSession: install per-request stamp at connect time; transport becomes pv-agnostic
maxisbey
committed
Client gains mode= and prior_discover= policy knobs (legacy and version-pin)
maxisbey
committed
ClientSession.discover() with the error ladder; Client mode='auto'
maxisbey
committed
modern_on_request driver + Client in-process modern path via DirectDispatcher peer-pair
maxisbey
committed
Sweep: route report_progress through DispatchContext.progress; bump LATEST_PROTOCOL_VERSION; orphan cleanup
maxisbey
committed
Add lifecycle:envelope/discover/mode requirement entries and interaction tests
maxisbey
committed
Conformance client fixture: drive Client(mode='auto') for the modern leg
maxisbey
committed

Commits on Jun 23, 2026