Merge pull request #15 from maccyber/reset_body_and_method_when_redir

Resets body, method and content-length when redirected
jd1378 · Dec 12, 2022 · 7f8a1ef · 7f8a1ef
2 parents 96f2428 + 6022788
commit 7f8a1ef
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/fetch_wrapper.ts b/fetch_wrapper.ts
@@ -121,13 +121,16 @@ export function wrapFetch(options?: WrapFetchOptions): typeof fetch {
 
     // Do not forward sensitive headers to third-party domains.
     if (!isDomainOrSubdomain(originalRequestUrl, redirectUrl)) {
-      for (
-        const name of ["authorization", "www-authenticate"] // cookie headers are handled differently
-      ) {
+      for (const name of ["authorization", "www-authenticate"]) { // cookie headers are handled differently
         filteredHeaders.delete(name);
       }
     }
 
+    if (interceptedInit.method === "POST") {
+      filteredHeaders.delete("content-length");
+      interceptedInit.method = "GET";
+      interceptedInit.body = undefined;
+    }
     interceptedInit.headers = filteredHeaders;
 
     return await wrappedFetch(redirectUrl, interceptedInit as RequestInit);