From 82ff55ba99c75c127339fbde16fc02cfbc4a28c7 Mon Sep 17 00:00:00 2001
From: Chris Wanstrath <chris@ozmm.org>
Date: Mon, 16 Feb 2026 09:36:10 -0800
Subject: [PATCH] guess and check

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

diff --git a/src/server/proxy.ts b/src/server/proxy.ts
index ed1ff23..1953d6b 100644
--- a/src/server/proxy.ts
+++ b/src/server/proxy.ts
@@ -42,7 +42,7 @@ export async function proxySubdomain(subdomain: string, req: Request): Promise<R
   const body = hasBody ? await req.arrayBuffer() : undefined
 
   const headers = new Headers(req.headers)
-  headers.delete('host')
+  headers.set('host', `localhost:${app.port}`)
   headers.delete('connection')
   headers.delete('keep-alive')
   headers.delete('transfer-encoding')