# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1601839640 -7200
# Node ID 578ce0415398a9513ff7efb3887446a024065b79
# Parent  57215267dd4f3b883de5237d60e552777ee1bf5e
util.dns: Fix returning read position after zero-length name

Doesn't affect normal usage by Prosody since neither A nor AAAA records
use this and SRV records has the host name last so the position is not
needed.

diff -r 57215267dd4f -r 578ce0415398 util/dns.lua
--- a/util/dns.lua	Wed Feb 02 17:31:39 2022 +0100
+++ b/util/dns.lua	Sun Oct 04 21:27:20 2020 +0200
@@ -40,7 +40,7 @@
 
 -- No support for pointers, but libunbound appears to take care of that.
 local function readDnsName(packet, pos)
-	if s_byte(packet, pos) == 0 then return "."; end
+	if s_byte(packet, pos) == 0 then return ".", pos+1; end
 	local pack_len, r, len = #packet, {};
 	pos = pos or 1;
 	repeat