From dfac79db55e93267e27d5b9ff557e8068f425060 Mon Sep 17 00:00:00 2001
From: ciiiii <allen.ccccnm@gmail.com>
Date: Sun, 16 Feb 2025 18:14:20 -0600
Subject: [PATCH] Handle dockerhub blob redirect

---
 src/index.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index 7c4ebd8..a97a738 100644
--- a/src/index.js
+++ b/src/index.js
@@ -105,12 +105,22 @@ async function handleRequest(request) {
   const newReq = new Request(newUrl, {
     method: request.method,
     headers: request.headers,
-    redirect: "manual",
+    // don't follow redirect to dockerhub blob upstream
+    redirect: isDockerHub ? "manual" : "follow",
   });
   const resp = await fetch(newReq);
   if (resp.status == 401) {
     return responseUnauthorized(url);
   }
+  // handle dockerhub blob redirect manually
+  if (isDockerHub && resp.status == 307) {
+    const location = new URL(resp.headers.get("Location"));
+    const redirectResp = await fetch(location.toString(), {
+      method: "GET",
+      redirect: "follow",
+    });
+    return redirectResp;
+  }
   return resp;
 }