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27 lines
1.7 KiB
Plaintext
27 lines
1.7 KiB
Plaintext
TODO items.
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o use real entropy to make random (ID, port) numbers more random.
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o in production mode, do not free memory on exit. In debug mode, test leaks.
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o profile memory allocation, and if performance issues, use special memory
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allocator. For example, with caches per thread.
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o #define BIT_... different on bigendian and smallendian systems so that
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the htons on flags is not needed to send a message from the cache.
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o speed up pkt domain name decompression loop detection using counter perhaps.
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o detect OS/400 pthreads implementation that allows upgrading to writelock
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on pthreads rwlocks and use it to examine-rd before storing-wr rrset cache.
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o understand synthesized DNAMEs, so those TTL=0 packets are cached properly.
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o understand NSEC/NSEC3, aggressive negative caching, so that updates to
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NSEC/NSEC3 will result in proper negative responses.
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o fallback without EDNS if result is NOTIMPL, now only on FORMERR like in java.
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o scrubber has slow pkt_subdomain and pkt_strict_subdomain functions.
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o get serverselection algorithm out of local optimum.
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make subtargets to get rtt info for a couple of targets, like fetch-policy.
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or send out multiple queries to multiple servers.
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o donotqueryaddresses allow specification of subnets, use trie to store.
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extend default list to contain illegal ip4 and ip6 addresses.
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o memory profile; and if needed put serviced queries under qstate->region
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and special purpose region code, reuse blocks, shrink if too big.
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o check query, option to enforce presence of qdsection in noerror answers.
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o configuration option where port 53 is used for send and receive, no other
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ports are used.
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o prime sequence in multiple queries, if glue missing from prime sequence.
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