Fix: streamable-http server: a supplied Mcp-Method contradicting an initialize body is silently accepted - #1275

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modelcontextprotocol:mainfrom

SIDDARTHAREDDY8:oss-bhai-2026-09-15

Commits on Sep 18, 2026

Address review feedback: inspect every Mcp-Method value via get_all, reject duplicate or non-UTF8 method values on initialize
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