Channing Conger be0dfcfbea [codex] define code mode host handshake protocol (#29515) ...

## Summary

- add validated protocol-version, capability, and session identifier
types
- define explicit `ClientToHost` and `HostToClient` JSON envelopes for
connection negotiation and session open/close acknowledgements
- reject invalid states and unknown fields during decoding, with
explicit wire-format and round-trip coverage

## Why

This establishes the transport-neutral encoding shape needed to build
and test the new code-mode host incrementally. Cell, tool callback, and
failure-domain messages are intentionally deferred until their actors
and behavior tests establish the required semantics.

This is additive protocol scaffolding and does not change the current
production code-mode implementation.

## Validation

be0dfcfbea · 2026-06-23 14:57:44 -07:00

History

..

src

[codex] define code mode host handshake protocol (#29515)

2026-06-23 14:57:44 -07:00

BUILD.bazel

code-mode standalone: extract protocol and add host crate (#27724)

2026-06-11 22:37:26 -07:00

Cargo.toml

code-mode standalone: extract protocol and add host crate (#27724)

2026-06-11 22:37:26 -07:00