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test(e2e): host the sse matrix column on the shipped legacy SSEServerTransport (#2229)

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Felix Weinberger 2026-06-01 15:43:52 +01:00 • committed by GitHub
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1 changed files with 101 additions and 97 deletions
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13
test/e2e/requirements.ts
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@ -2268,16 +2268,14 @@ export const REQUIREMENTS: Record<string, Requirement> = {
behavior:
'A single server instance can serve streamable HTTP and the legacy SSE transport concurrently; clients on either transport can call the same tools.',
transports: ['streamableHttp'],
note: 'Deferred flows test legacy SSE; transport restriction reflects test infrastructure, not behavioral exclusion.',
deferred: 'Legacy SSE transport is deprecated in the spec. Back-compat flows that require an SSE server are deferred.'
note: 'This is an HTTP-specific compatibility flow; the matrix transport arg is ignored, so it runs as a single streamableHttp-labelled cell to avoid duplicate runs. The SSE half is hosted with SSEServerTransport from @modelcontextprotocol/server-legacy/sse.'
},
'flow:compat:streamable-then-sse-fallback': {
source: 'https://modelcontextprotocol.io/specification/2025-11-25/basic/transports#backwards-compatibility',
behavior:
'When a streamable HTTP initialize fails with 400, 404, or 405, falling back to the legacy SSE client transport against the same server connects successfully.',
transports: ['streamableHttp'],
note: 'This is an HTTP-specific compatibility flow; the matrix transport arg is ignored, so it runs as a single streamableHttp-labelled cell to avoid duplicate runs.',
deferred: 'Legacy SSE transport is deprecated in the spec. Back-compat flows that require an SSE server are deferred.'
note: 'This is an HTTP-specific compatibility flow; the matrix transport arg is ignored, so it runs as a single streamableHttp-labelled cell to avoid duplicate runs.'
},
'flow:elicitation:multi-step-form': {
transports: STATEFUL_TRANSPORTS,
@ -2717,12 +2715,7 @@ export const REQUIREMENTS: Record<string, Requirement> = {
behavior:
'The SDK provides a server-side legacy HTTP+SSE transport so existing SSE deployments can be hosted on SDK components alone.',
transports: ['sse'],
note: 'This asserts the availability of the server half of the legacy SSE transport; the matrix transport arg is ignored, so it runs as a single sse-labelled cell.',
knownFailures: [
{
note: 'changed in v2: the server-side SSE transport was removed from the SDK; only the client-side SSEClientTransport remains, so the e2e sse column is hosted by a test-only bridge.'
}
]
note: 'This asserts the availability of the server half of the legacy SSE transport (SSEServerTransport from @modelcontextprotocol/server-legacy/sse); the matrix transport arg is ignored, so it runs as a single sse-labelled cell.'
}
} satisfies Record<string, Requirement>;