1.1 KiB
| @modelcontextprotocol/client |
|---|
| minor |
ConnectOptions.prior accepts a cached era verdict — the new exported type PriorDiscovery. { kind: 'modern', discover } adopts a previously obtained DiscoverResult with zero round trips; { kind: 'legacy' } skips the server/discover probe and runs the plain initialize handshake directly, for servers known out-of-band to be legacy — without pinning the client to mode: 'legacy': stop supplying the verdict and connect() falls back to the configured versionNegotiation mode (under 'auto', it re-probes and rediscovers an upgraded server). Freshness is the supplying host's responsibility — a stale legacy verdict succeeds silently against an upgraded server, so hosts must date cached legacy verdicts in their own storage and stop supplying them past their policy horizon. Persisted-blob plumbing is hardened: prior: null is treated as absent, the modern arm's discover payload is schema-validated before any connection state changes, and an unrecognized shape rejects with a typed SdkError(EraNegotiationFailed) instead of a TypeError.