Updating force-relative-redirects so that it only affects redirects to LabelZoom.net

Author: RobFaustLZ

package.json

@@ -1,7 +1,7 @@
 {
   "name": "labelzoom-cf-api-proxy",
   "description": "A Cloudflare Worker that serves as a reverse proxy for LabelZoom's public REST API",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "private": true,
   "dependencies": {
     "hono": "4.7.7",

src/worker/index.ts

@@ -100,7 +100,7 @@ app.notFound((c) => {
     return proxyToBackend({
         baseUrl: c.env.LZ_PROD_API_BASE_URL,
         headers: {
-            'X-LZ-IP': c.req.header("Cf-Connecting-Ip") || c.req.header("X-Forwarded-For") || '',
+            'X-LZ-IP': c.req.header("CF-Connecting-IP") || c.req.header("X-Forwarded-For") || '',
             'X-LZ-Secret-Key': c.env.LZ_PROD_API_SECRET_KEY,
         },
     })(c);

src/worker/middleware/force-relative-redirects.ts

@@ -15,7 +15,9 @@ export const forceRelativeRedirects = (): MiddlewareHandler => {
                 const url = new URL(locationHeader); // throws TypeError if not a full URL
 
                 // URL parsed successfully, it's an absolute redirect rather than relative
-                c.res.headers.set('Location', url.pathname + url.search);
+                if (/\.?labelzoom.net$/.test(url.host)) {
+                    c.res.headers.set('Location', url.pathname + url.search);
+                }
             } catch {
                 // failed to parse location header as URL, it's already a relative redirect (so do nothing)
             }