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Nick Steele a6baf8867c Signal abandonment of unanswered MCP elicitations (#51611 )

## Why

Published MCP elicitation requests could lose their response waiter without notifying the event consumer that the request was no longer answerable.

## What changed

- Add `ElicitationAbandoned` with the original server name and response token for requests published through unbounded event channels.
- Emit abandonment exactly once when a waiter is dropped, response delivery fails, or the MCP runtime shuts down.
- Close the elicitation router during shutdown, reject new requests on unbounded sources, and wait for terminal deliveries before shutdown completes. Preserve bounded sources' request-only behavior and backpressure.

## Testing

Add router tests for ordered, exactly-once abandonment, closed receivers, failed response delivery, shutdown coordination, and bounded-channel backpressure. Add a core integration scenario verifying that a pending form's abandonment precedes `ShutdownComplete`.

GitOrigin-RevId: 53fe9f4a8b32f7324be180288aa492f31f4d2057

2026-10-07 07:57:14 +00:00

src

Signal abandonment of unanswered MCP elicitations (#51611 )

2026-10-07 07:57:14 +00:00

BUILD.bazel

build: run buildifier from just fmt (#28125 )

2026-06-13 21:43:39 -07:00

Cargo.toml

Truncate input text in protocol debug output (#49415 )

2026-09-30 00:51:15 +00:00

README.md

fix: separate codex mcp into codex mcp-server and codex app-server (#4471 )

2025-09-30 07:06:18 +00:00

README.md

codex-protocol

This crate defines the "types" for the protocol used by Codex CLI, which includes both "internal types" for communication between codex-core and codex-tui, as well as "external types" used with codex app-server.

This crate should have minimal dependencies.

Ideally, we should avoid "material business logic" in this crate, as we can always introduce Ext-style traits to add functionality to types in other crates.