Fix status codes for invalid session IDs in streamable HTTP examples#1424
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kxbnb wants to merge 1 commit intomodelcontextprotocol:mainfrom
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Fix status codes for invalid session IDs in streamable HTTP examples#1424kxbnb wants to merge 1 commit intomodelcontextprotocol:mainfrom
kxbnb wants to merge 1 commit intomodelcontextprotocol:mainfrom
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Per spec: - Missing session ID (when required) → 400 Bad Request - Invalid/unknown session ID → 404 Not Found Previous code returned 400 for both cases. This fix differentiates: - POST without session ID + not init request → 400 - POST/GET/DELETE with unknown session ID → 404 Updated examples: - jsonResponseStreamableHttp.ts - simpleStreamableHttp.ts - standaloneSseWithGetStreamableHttp.ts - elicitationFormExample.ts - elicitationUrlExample.ts - simpleTaskInteractive.ts Fixes modelcontextprotocol#389 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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@modelcontextprotocol/client
@modelcontextprotocol/server
@modelcontextprotocol/express
@modelcontextprotocol/hono
@modelcontextprotocol/node
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Summary
Per the MCP spec, invalid session IDs should return 404 Not Found (to signal the client should start a new session), while missing session IDs should return 400 Bad Request.
Previous code returned 400 for both cases. This fix differentiates:
Updated examples
jsonResponseStreamableHttp.tssimpleStreamableHttp.tsstandaloneSseWithGetStreamableHttp.tselicitationFormExample.tselicitationUrlExample.tssimpleTaskInteractive.tsTest plan
pnpm typecheck:all)Fixes #389
🤖 Generated with Claude Code