From afb89715695faf2280c786804fdbc8d650aabbd9 Mon Sep 17 00:00:00 2001
From: Jerome <jerome@anthropic.com>
Date: Mon, 7 Jul 2025 14:44:35 +0100
Subject: [PATCH] Add ondelete hook to StreamableHTTPServerTransport
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Adds optional ondelete callback that fires when DELETE request is received, providing the sessionId for cleanup handling.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 src/server/streamableHttp.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/server/streamableHttp.ts b/src/server/streamableHttp.ts
index 022d1a47..bf3a93c9 100644
--- a/src/server/streamableHttp.ts
+++ b/src/server/streamableHttp.ts
@@ -133,6 +133,7 @@ export class StreamableHTTPServerTransport implements Transport {
 
   sessionId?: string;
   onclose?: () => void;
+  ondelete?: (sessionId: string) => void;
   onerror?: (error: Error) => void;
   onmessage?: (message: JSONRPCMessage, extra?: MessageExtraInfo) => void;
 
@@ -538,6 +539,7 @@ export class StreamableHTTPServerTransport implements Transport {
     if (!this.validateProtocolVersion(req, res)) {
       return;
     }
+    this.ondelete?.(this.sessionId!);
     await this.close();
     res.writeHead(200).end();
   }