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authorDaniel Mack <daniel@zonque.org>2015-11-30 12:47:11 +0100
committerDaniel Mack <daniel@zonque.org>2015-12-08 16:51:41 +0100
commit0afa57e2e7645f3a550729e4daadda419de179c5 (patch)
treeaf362af7fe917831d3740ac4d2c826f33d98b1d3 /src/resolve/resolved-dns-cache.h
parenta9da14e1e97ff774761966c2e1d83b0c6750b367 (diff)
resolved: implement query coalescing
Implement dns_transaction_make_packet_mdns(), a special version of dns_transaction_make_packet() for mDNS which differs in many ways: a) We coalesce queries of currently active transaction on the scope. This is possible because mDNS actually allows many questions in a to be sent in a single packet and it takes some burden from the network. b) Both A and AAAA query keys are broadcast on both IPv4 and IPv6 scopes, because other hosts might only respond on one of their addresses but resolve both types. c) We discard previously sent packages (t->sent) so we can start over and coalesce pending transactions again.
Diffstat (limited to 'src/resolve/resolved-dns-cache.h')
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