From: Michael R Sweet <msweet@msweet.org>
Date: Sat, 6 Apr 2024 13:51:14 +0000 (-0400)
Subject: Use NULL hostname for services on the loopback interface (Issue #902)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a88910bd0bc79aa9d051c183c13a211d863e7ea1;p=thirdparty%2Fcups.git

Use NULL hostname for services on the loopback interface (Issue #902)
---

diff --git a/cups/dnssd.c b/cups/dnssd.c
index 1a265814b4..d5e9e15e55 100644
--- a/cups/dnssd.c
+++ b/cups/dnssd.c
@@ -1080,6 +1080,11 @@ cupsDNSSDServiceAdd(
   char			*regtype,	// Registration type
 			*subtypes;	// Subtypes (if any)
 
+  // Avahi has trouble with hostnames for services that are only available on
+  // the loopback interface/localhost...
+  if (service->if_index == CUPS_DNSSD_IF_LOCAL || !_cups_strcasecmp(host, "localhost"))
+    host = NULL;
+
   // Build the string list from the TXT array...
   for (i = 0; i < num_txt; i ++)
     txtrec = avahi_string_list_add_printf(txtrec, "%s=%s", txt[i].name, txt[i].value);