Joseph Beshay a778579f7e Fix connection id handling for migration ...

Summary:
Implement connection id management logic for connection migration.

**New Behavior:**
- PathManager assigns an available peer CID to each new probe path, marks it in use, and return a new LocalErrorCode::NO_AVAILABLE_CID for the case when there are no available connection IDs.
- Writing path validation packets now uses the path’s assigned destination CID instead of the connections, enforcing the protocol requirement that a new CID is used when using a different path. This applies to both the client and server.
- Incoming packets are validated against the full set of self connection IDs; when the peer rotates to a new destination CID on the active path, the client adopts it and updates codec state. This applies to both the client and the server.
- startPathProbe now fails with INTERNAL_ERROR when no unused peer CID remains. This applies to the client.

Reviewed By: sharmafb

Differential Revision: D80503189

fbshipit-source-id: 529f096d6d459512eb4cabc1dd4499134555039d

2025-10-23 12:35:08 -07:00

96 KiB

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