From 28fbf4a87d81107ef548137b75b4f7ef01c4a75c Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Fri, 27 Mar 2026 14:33:33 +0100
Subject: [PATCH] multi: fix connection retry for non-http

non-HTTP protocols no longer retry after connection reuse failures
because multi_follow() now requires a handler->follow callback that is
NULL for those protocols. Provide a fallback for plain retries.

Follow-up to 1213c312722f93b7856d2

Spotted by Codex Security

Closes #21121
---
 lib/multi.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/multi.c b/lib/multi.c
index fa8eba2a37..32e7e9ec9d 100644
--- a/lib/multi.c
+++ b/lib/multi.c
@@ -1955,6 +1955,12 @@ static CURLcode multi_follow(struct Curl_easy *data,
 {
   if(handler && handler->run->follow)
     return handler->run->follow(data, newurl, type);
+
+  if(type == FOLLOW_RETRY)
+    /* Retries are generic and do not require protocol-specific redirect
+       handling. */
+    return CURLE_OK;
+
   return CURLE_TOO_MANY_REDIRECTS;
 }