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comparison net/adns.lua @ 4024:d2f80697c329

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net.adns: Handle dns.query() failures, and pass error to handler
author Matthew Wild <mwild1@gmail.com>
date Fri, 24 Dec 2010 04:52:40 +0000
parents fb95015bc646
children 764922062c38
comparison
equal deleted inserted replaced
4023:7910f36e2791 4024:d2f80697c329
24 log("debug", "Records for %s already cached, using those...", qname); 24 log("debug", "Records for %s already cached, using those...", qname);
25 handler(peek); 25 handler(peek);
26 return; 26 return;
27 end 27 end
28 log("debug", "Records for %s not in cache, sending query (%s)...", qname, tostring(coroutine.running())); 28 log("debug", "Records for %s not in cache, sending query (%s)...", qname, tostring(coroutine.running()));
29 dns.query(qname, qtype, qclass); 29 local ok, err = dns.query(qname, qtype, qclass);
30 coroutine.yield({ qclass or "IN", qtype or "A", qname, coroutine.running()}); -- Wait for reply 30 if ok then
31 log("debug", "Reply for %s (%s)", qname, tostring(coroutine.running())); 31 coroutine.yield({ qclass or "IN", qtype or "A", qname, coroutine.running()}); -- Wait for reply
32 local ok, err = pcall(handler, dns.peek(qname, qtype, qclass)); 32 log("debug", "Reply for %s (%s)", qname, tostring(coroutine.running()));
33 end
34 if ok then
35 ok, err = pcall(handler, dns.peek(qname, qtype, qclass));
36 else
37 log("error", "Error sending DNS query: %s", err);
38 ok, err = pcall(handler, nil, err);
39 end
33 if not ok then 40 if not ok then
34 log("error", "Error in DNS response handler: %s", tostring(err)); 41 log("error", "Error in DNS response handler: %s", tostring(err));
35 end 42 end
36 end)(dns.peek(qname, qtype, qclass)); 43 end)(dns.peek(qname, qtype, qclass));
37 end 44 end