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net.dns: Don't attempt to cache unparsed data (fixes #1056)

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rr[qtype:lower()] can be nil. I think this happens if the type does not
have a parser.

Also see #819 #976
This commit is contained in:
Kim Alvefur 2018-06-09 15:35:03 +02:00
parent d8100c6004
commit fb63de9331
1 changed files with 1 additions and 1 deletions
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net/dns.lua
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@ -672,7 +672,7 @@ function resolver:remember(rr, type) -- - - - - - - - - - - - - - remember
self.cache = self.cache or setmetatable({}, cache_metatable);
local rrs = get(self.cache, qclass, type, qname) or
set(self.cache, qclass, type, qname, setmetatable({}, rrs_metatable));
if not rrs[rr[qtype:lower()]] then
if rr[qtype:lower()] and not rrs[rr[qtype:lower()]] then
rrs[rr[qtype:lower()]] = true;
append(rrs, rr);
end