From 0371b188bf61543d1da0b4e45d45ff6c741903a2 Mon Sep 17 00:00:00 2001
From: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>
Date: Wed, 20 May 2026 01:38:31 -0700
Subject: [PATCH] fix: unsupported header takes precedence over header mismatch
 (#293)

---
 src/scenarios/server/stateless.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/scenarios/server/stateless.ts b/src/scenarios/server/stateless.ts
index 9c195aa..17b3697 100644
--- a/src/scenarios/server/stateless.ts
+++ b/src/scenarios/server/stateless.ts
@@ -403,7 +403,7 @@ export class ServerStatelessScenario implements ClientScenario {
     const responseAbsent = await sendRpc(
       'server/discover',
       { _meta: headerMismatchMeta },
-      { 'MCP-Protocol-Version': 'mismatch.version' },
+      { 'MCP-Protocol-Version': DRAFT_PROTOCOL_VERSION },
       302
     ).catch(() => null);
     const resAbsent: any = responseAbsent?.res ?? null;