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Slim ServerMiddleware to (ctx, call_next) and add OpenTelemetryMiddleware (#2941)

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Co-authored-by: Max Isbey <224885523+maxisbey@users.noreply.github.com>
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Marcelo Trylesinski 2026-06-22 15:46:30 +02:00 • committed by GitHub
commit ad81ca234a
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1 changed files with 374 additions and 86 deletions
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src/mcp/server/lowlevel/server.py
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@ -225,7 +225,7 @@ class Server(Generic[LifespanResultT]):
self._session_manager: StreamableHTTPSessionManager | None = None
# Context-tier middleware: wraps every inbound request (including
# `initialize`, lookup, validation, handler) with
# `(ctx, method, params, call_next)`. Applied in `ServerRunner._on_request`.
# `(ctx, call_next)`. Applied in `ServerRunner._on_request`.
# TODO(L54): provisional - signature and semantics change with the
# Context/middleware rework (covariant `Context[L]`, outbound seam) before
# v2 final.