From 84c60320fade8c8d940b1185addbb5b2291e0866 Mon Sep 17 00:00:00 2001
From: Bas van den Aakster <bvdaakster@gmail.com>
Date: Wed, 12 Nov 2025 22:42:43 +0100
Subject: [PATCH] Add proper error handling for session ID clashes
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Return 409 Conflict status when user-provided connection ID already exists, instead of generic 500 error.

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

Co-Authored-By: Claude <noreply@anthropic.com>
---
 src/app.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/app.ts b/src/app.ts
index 6b585f5..9a778af 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -152,6 +152,12 @@ export function createApp(storage: Storage, config: AppConfig) {
       return c.json({ code }, 200);
     } catch (err) {
       console.error('Error creating offer:', err);
+
+      // Check if it's a session code clash error
+      if (err instanceof Error && err.message.includes('already exists')) {
+        return c.json({ error: err.message }, 409);
+      }
+
       return c.json({ error: 'Internal server error' }, 500);
     }
   });