Less is more.

Complete and usable DNS library. All widely used Resource Records are supported, including the DNSSEC types. It follows a lean and mean philosophy. If there is stuff you should know as a DNS programmer there isn't a convenience function for it. Server side and client side programming is supported, i.e. you can build servers and resolvers with it.

• KISS;
• Symmetric API: client and server side should be very similar;
• Small API, if its easy to code in Go, don't make a function for it.

• UDP/TCP queries, IPv4 and IPv6;
• RFC 1035 zone file parsing ($INCLUDE, $ORIGIN, $TTL and $GENERATE [for all record types] are supported);
• Fast:
  • Reply speed around 35/40K qps (faster hardware results in more qps);
  • Parsing RRs (zone files) with 95/100K RR/s, that's 5M records in about 50 seconds;
• Client and server side programming (mimicking the net/http package);
• Asynchronous queries/replies for client and server;
• DNSSEC: signing, validating and key generation for DSA, RSA and ECDSA;
• EDNS0, NSID;
• AXFR/IXFR;
• TSIG;
• DNS name compression.

Have fun!

Miek Gieben - 2010-2012 - miek@miek.nl

Building is done with the go tool. If you have setup your GOPATH correctly the following should work:

go build dns

Sample programs can be found in the ex directory. They can be build with: make -C ex, or also with the go tool.

all of them

• 103{4,5} - DNS standard
• 1982 - Serial Arithmetic
• 1876 - LOC record
• 1995 - IXFR
• 1996 - DNS notify
• 2136 - DNS Update (dynamic updates)
• 2181 - RRset definition
• 2537 - RSAMD5 DNS keys
• 2065 - DNSSEC (updated in later RFCs)
• 2671 - EDNS record
• 2782 - SRV record
• 2845 - TSIG record
• 2915 - NAPTR record
• 3110 - RSASHA1 DNS keys
• 3225 - DO bit (DNSSEC OK)
• 340{1,2,3} - NAPTR record
• 3445 - Limiting the scope of (DNS)KEY
• 3597 - Unkown RRs
• 403{3,4,5} - DNSSEC + validation functions
• 4255 - SSHFP record
• 4408 - SPF record
• 4509 - SHA256 Hash in DS
• 4592 - Wildcards in the DNS
• 4635 - HMAC SHA TSIG
• 4701 - DHCID
• 4892 - id.server
• 5001 - NSID
• 5155 - NSEC3 record
• 5205 - HIP record
• 5702 - SHA2 in the DNS
• 5936 - AXFR
• 6605 - ECDSA
• xxxx - URI record (draft)

• ldns
• NSD
• Net::DNS
• GRONG