* feat(everything-server): serve resources and caching hints on the stateless draft path
The stateless (SEP-2575) request path now answers resources/list,
resources/templates/list and resources/read — including the SEP-2164
-32602 + data.uri error for unknown URIs — and includes the SEP-2549
ttlMs/cacheScope hints on its cacheable list results, matching what the
draft-spec scenarios exercise.
* feat: make the harness's own draft-spec traffic conformant
Fixes the class of issues where a strictly-conformant SDK rejects the
harness's requests for reasons unrelated to the behaviour under test
(#311, #312, #315).
- add a shared stateless draft request helper (draft-client.ts) that puts
the cross-cutting SEP-2243 headers (Mcp-Method, Mcp-Name,
MCP-Protocol-Version, Accept) and SEP-2575 _meta (protocolVersion,
clientInfo, clientCapabilities) on every request, with overrides for
negative cases and the SHOULD-level retry on
UnsupportedProtocolVersionError
- migrate the draft scenarios onto it: the SEP-2322 helpers and
server-stateless now send Mcp-Method/Mcp-Name (#312); the SEP-2243
server scenarios drop the legacy initialize handshake and carry _meta on
every raw request (#311); caching and sep-2164-resource-not-found are
stateless DRAFT-2026-v1 requests instead of an SDK 2025-11-25 session
(#315)
- add a draft self-conformance gate (draft-self-conformance.test.ts) that
points the harness's own draft drivers at the existing client-testing
judge scenarios (request-metadata, http-standard-headers) and requires
zero failures or warnings
- align the request-metadata mock's unsupported-version rejection with the
draft schema (-32004) and teach the everything-client to recognize it
- rewrite the SEP-2549/SEP-2164 negative example servers as stateless
draft servers so they keep exercising the violation, not the transport
* refactor: rename the stateless request helpers and harden them per review
- rename draft-client.ts to stateless-client.ts and name the helpers by
feature (sendStatelessRequest, buildStandardHeaders, buildRequestMeta,
withRequestMeta, CONFORMANCE_CLIENT_INFO); 'draft' now only appears in
DRAFT_PROTOCOL_VERSION, the one name that tracks the moving target
- retry only genuine UnsupportedProtocolVersionError rejections (-32004,
tolerating -32001/-32602) and only with recognized versions; record the
retry on the response
- parse text/event-stream responses incrementally and resolve on the
matching event instead of blocking until the timeout
- keep the MCP-Protocol-Version header and _meta protocolVersion in sync
when the version is overridden via meta overrides
- make server-stateless's sendRpc SSE-tolerant
- emit explicit setup failures in the SEP-2243 server scenarios when the
tools/list discovery fails instead of misleading per-case results
- latch the worst status per check in the request-metadata judge so an
early violation cannot be masked by a later conformant request
- rename the gate to harness-traffic-conformance.test.ts and derive its
driver list from the draft suite with documented per-judge exclusions
(35 pairings)
- everything-server: advertise resources in stateless server/discover and
use -32004 for unsupported protocol version
- add unit tests for the helper (retry guard, SSE handling, header/_meta
version sync, default headers)
* refactor: slim the stateless client helper for the initial merge
076b417b23