From db2983da7e8175ca3928998d4547acdf75d55dc0 Mon Sep 17 00:00:00 2001
From: Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>
Date: Fri, 28 Nov 2025 12:21:08 +0100
Subject: Fix/check curl sticky redir (#2188)

* check_curl: avoid freeing memory when we don't know where it came from

* check_curl: when using -f sticky conserve IPv6 addresses properly

When running the check on an ipv6 address with a sticky onredirect
policy like in this example:

  check_curl -6 -H example.com -I ::1 -f sticky

It results in a getaddrinfo error:

  HTTP CRITICAL - Unable to lookup IP address for '[::1]': getaddrinfo returned -3 - Temporary failure in name resolution

This happens because in check_http() if the content of server_addr is an
ipv6 address enclosing brackets are added and on redirection a
subsequent call to check_http() will pass this now bracketed value to
getaddrinfo resulting in the error.

To work around this, strip the brackets from the address prior to the
lookup_host() call.

* add Michael Jeanson to thanks
---
 THANKS.in | 1 +
 1 file changed, 1 insertion(+)

(limited to 'THANKS.in')

diff --git a/THANKS.in b/THANKS.in
index 66397ad1..5dbb1b39 100644
--- a/THANKS.in
+++ b/THANKS.in
@@ -426,3 +426,4 @@ Eunice Remoquillo
 Louis Sautier
 Sven Hartge
 Alvar Penning
+Michael Jeanson
-- 
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