client-side DNS TCP
dimgrav at gmail.com
Thu Jul 6 19:13:06 UTC 2017
I'm trying to put together the standard for the client-side DNS TCP
calls in libcli/dns/dns.c, libdns.h and dns.h, so that I can then work
on switching from UDP for packages larger than 512 bytes. I'm using
source4/dns_server/dns_server.c and dns_server for cross-referencing and
to figure out how exactly should I make the client implementation.
I've gone through RFC 1035/768/793/2548/7766, but I'm still getting a
bit overwhelmed from the custom headers and APIs that are used in Samba.
To my understanding, dns_server.c/.h cover the stream, socket and
binding over TCP and most functions from dns_server.c that handle the
above, could be directly implemented to libcli/dns.c, am I correct? Do I
use the same memory and tevent context that is used for UDP requests?
Both talloc and tevent have given me a bit of a hard time, information
I've also looked into PIDL and found the definition for TSIG records,
along with a "fake" TSIG definition, could you tell me what exactly this
is, since I didn't come across it in RFC 2845?
I checked this
tutorial as well (it's from a Greek University), though it uses Sockets,
it helped me put all those RFCs in perspective.
I'd greatly appreciate your help,
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