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modules/s_dns_resolver: Additional checks before allowing entry to resolver.

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This commit is contained in:
Jason Volk 2018-10-23 11:22:27 -07:00
parent 68a136c85d
commit bf4cdbf878
1 changed files with 9 additions and 1 deletions
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10
modules/s_dns_resolver.cc
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@ -86,7 +86,15 @@ ircd::net::dns::resolver_call(const hostport &hp,
host(hp)
};
(*resolver)(hp, opts, std::move(cb));
auto &resolver{*dns::resolver};
if(unlikely(!resolver.ns.is_open()))
throw error
{
"Cannot resolve '%s': resolver is closed.",
host(hp)
};
resolver(hp, opts, std::move(cb));
}
//