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Add MCP event discovery and subscriptions (#37494)

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## What changed

- Expose hosted Plugin Runtime event definitions through `McpResourceClient::list_events`.
- Add cancellable `events/stream` subscriptions that route lifecycle notifications to the matching request and cancel when the stream is dropped.
- Bound event notification and queue sizes, time out stalled response headers, and close streamable HTTP responses locally on cancellation.

## Testing

- Add streamable HTTP integration coverage for isolated concurrent subscriptions, local cancellation, and stalled response-header timeouts.

GitOrigin-RevId: 98c6fffa8f004eb2638c1b0705f659222cbbdfdb
This commit is contained in:
Evan Fannin authored and copyberry committed 2026-08-07 19:36:52 +00:00
1 parent 2b1811e562
commit 41014b11bd
8 files changed
+837 -30
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codex-rs/codex-mcp/src/lib.rs
+4
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@@ -7,6 +7,10 @@ pub use elicitation::ElicitationLifecycle;
pub use elicitation::ElicitationReviewRequest;
pub use elicitation::ElicitationReviewer;
pub use elicitation::ElicitationReviewerHandle;
pub use resource_client::McpEventCatalogSnapshot;
pub use resource_client::McpEventDefinition;
pub use resource_client::McpEventNotification;
pub use resource_client::McpEventStream;
pub use resource_client::McpResourceClient;
pub use resource_client::McpResourceClientCacheKey;
pub use resource_client::McpResourcePage;