$OpenBSD: patch-avahi-core_browse-service_c,v 1.1 2021/09/03 11:46:03 ajacoutot Exp $

From 6fe6c44d953edd50c32ff6ce8fec5ac811fa3b69 Mon Sep 17 00:00:00 2001
From: Asger Hautop Drewsen <asger@princh.com>
Date: Mon, 9 Aug 2021 14:25:08 +0200
Subject: [PATCH] Fix avahi-browse: Invalid service type

Index: avahi-core/browse-service.c
--- avahi-core/browse-service.c.orig
+++ avahi-core/browse-service.c
@@ -103,7 +103,9 @@ AvahiSServiceBrowser *avahi_s_service_browser_prepare(
     AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_PROTO_VALID(protocol), AVAHI_ERR_INVALID_PROTOCOL);
     AVAHI_CHECK_VALIDITY_RETURN_NULL(server, !domain || avahi_is_valid_domain_name(domain), AVAHI_ERR_INVALID_DOMAIN_NAME);
     AVAHI_CHECK_VALIDITY_RETURN_NULL(server, AVAHI_FLAGS_VALID(flags, AVAHI_LOOKUP_USE_WIDE_AREA|AVAHI_LOOKUP_USE_MULTICAST), AVAHI_ERR_INVALID_FLAGS);
-    AVAHI_CHECK_VALIDITY_RETURN_NULL(server, avahi_is_valid_service_type_generic(service_type), AVAHI_ERR_INVALID_SERVICE_TYPE);
+
+    if (!avahi_is_valid_service_type_generic(service_type))
+        service_type = "_invalid._tcp";
 
     if (!domain)
         domain = server->domain_name;
