From 595b9518d519ba92268c168ce07f8db4b88e83f5 Mon Sep 17 00:00:00 2001
From: Julien Oculi <xdrz.jot.sr@gmail.com>
Date: Wed, 14 May 2025 09:30:00 +0200
Subject: [PATCH] fix(routes/api): handle non websocket connection

---
 routes/api/serviceworker/is-online.tsx | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/routes/api/serviceworker/is-online.tsx b/routes/api/serviceworker/is-online.tsx
index 54c21cf..d426e06 100644
--- a/routes/api/serviceworker/is-online.tsx
+++ b/routes/api/serviceworker/is-online.tsx
@@ -2,6 +2,15 @@ import { define } from '../../../utils.ts'
 
 export const handler = define.handlers({
 	GET(ctx) {
+		if (
+			ctx.req.headers.get('connection') !== 'Upgrade' &&
+			ctx.req.headers.get('upgrade') !== 'websocket'
+		) {
+			return new Response('Request is not a websocket upgrade.', {
+				status: 400,
+			})
+		}
+
 		const { response } = Deno.upgradeWebSocket(ctx.req)
 		ctx.state.skipMiddlewares = true
 		return response