Log proxy errors

app/api/metadata/proxy/feature/ip.ts

@@ -90,7 +90,7 @@ export async function checkURLForPrivateIP(uri: URL | string) {
             for (const address of addresses) {
                 if (isPrivateIP(address.address)) {
                     return true;
-              }
+                }
             }
         } else {
             const singleResult = addresses as unknown as LookupAddressResult;

app/api/metadata/proxy/route.ts

@@ -18,7 +18,7 @@ const TIMEOUT = process.env.NEXT_PUBLIC_METADATA_TIMEOUT
 /**
  *  Respond with error in a JSON format
  */
-function respondWithError(status: keyof typeof errors, message?: string){
+function respondWithError(status: keyof typeof errors, message?: string) {
     return NextResponse.json({ error: message ?? errors[status].message }, { status });
 }
 
@@ -47,14 +47,17 @@ export async function GET(
 
         // check that uri has supported protocol despite of any other checks
         if (!isHTTPProtocol(parsedUrl)) {
+            console.error('Unsupported protocol', parsedUrl.protocol);
             return respondWithError(400);
         }
 
         const isPrivate = await checkURLForPrivateIP(parsedUrl);
         if (isPrivate) {
+            console.error('Private IP detected', parsedUrl.hostname);
             return respondWithError(403);
         }
     } catch (_error) {
+        console.error(_error);
         return respondWithError(400);
     }