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Tighten draft protocol negotiation boundaries (#1692)

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Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Tarek Mahmoud Sayed <tarekms@ntdev.microsoft.com>
This commit is contained in:
Stephen Halter 2026-07-12 14:30:49 -07:00 • committed by GitHub
commit fd38f51e27
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1 changed files with 1755 additions and 589 deletions
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6
tests/ModelContextProtocol.ConformanceClient/Program.cs
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@ -37,11 +37,11 @@ McpClientOptions options = new()
};
// The default client now prefers the 2026-07-28 protocol (probing with server/discover and
// falling back to a legacy initialize handshake). The "initialize" and "sse-retry" scenarios
// specifically exercise the legacy initialize handshake and SSE resumability (removed in the
// falling back to an initialize handshake). The "initialize" and "sse-retry" scenarios
// specifically exercise the initialize handshake and SSE resumability (removed in the
// 2026-07-28 protocol) and strictly expect initialize as the first message, so pin them to the
// latest stable version. Other scenarios run on the 2026-07-28 default and exercise the
// server/discover probe plus the transparent legacy fallback.
// server/discover probe plus the transparent initialize-handshake fallback.
if (scenario is "initialize" or "sse-retry")
{
options.ProtocolVersion = "2025-11-25";