98 lines
2.5 KiB
Markdown
98 lines
2.5 KiB
Markdown
# Alternative (more granular) approach to a DNS library.
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> Less is more.
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Complete and usable DNS library. All widely used Resource Records are
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supported, including the DNSSEC types. It follows a lean and mean philosophy.
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If there is stuff you should know as a DNS programmer there isn't a convenience
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function for it. Server side and client side programming is supported, i.e. you
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can build servers and resolvers with it.
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If you like this, you may also be interested in:
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* https://github.com/miekg/fks -- a complete nameserver written in Go;
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* https://github.com/miekg/unbound -- Go wrapper for the Unbound resolver.
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# Goals
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* KISS;
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* Small API, if its easy to code in Go, don't make a function for it.
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# Features
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* UDP/TCP queries, IPv4 and IPv6;
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* RFC 1035 zone file parsing ($INCLUDE, $ORIGIN, $TTL and $GENERATE [for all record types]
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are supported);
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* Fast:
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* Reply speed around ~ 50K qps (faster hardware results in more qps);
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* Parsing RRs with ~ 100K RR/s, that's 5M records in about 50 seconds;
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* Server side programming (mimicking the net/http package);
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* Client side programming with asynchronous calls;
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* Asynchronous queries/replies for client and server;
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* DNSSEC: signing, validating and key generation for DSA, RSA and ECDSA;
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* EDNS0, NSID;
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* AXFR/IXFR;
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* TSIG;
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* DNS name compression.
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Have fun!
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Miek Gieben - 2010-2012 - miek@miek.nl
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# Building
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Building is done with the `go` tool. If you have setup your GOPATH
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correctly the following should work:
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go get github.com/miekg/dns
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go build dns
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Sample programs can be found in the `ex` directory. They can
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be build with: `make -C ex`, or also with the `go` tool.
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## Supported RFCs
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*all of them*
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* 103{4,5} - DNS standard
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* 1982 - Serial Arithmetic
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* 1876 - LOC record
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* 1995 - IXFR
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* 1996 - DNS notify
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* 2136 - DNS Update (dynamic updates)
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* 2181 - RRset definition
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* 2537 - RSAMD5 DNS keys
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* 2065 - DNSSEC (updated in later RFCs)
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* 2671 - EDNS record
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* 2782 - SRV record
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* 2845 - TSIG record
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* 2915 - NAPTR record
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* 3110 - RSASHA1 DNS keys
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* 3225 - DO bit (DNSSEC OK)
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* 340{1,2,3} - NAPTR record
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* 3445 - Limiting the scope of (DNS)KEY
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* 3597 - Unkown RRs
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* 403{3,4,5} - DNSSEC + validation functions
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* 4255 - SSHFP record
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* 4408 - SPF record
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* 4509 - SHA256 Hash in DS
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* 4592 - Wildcards in the DNS
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* 4635 - HMAC SHA TSIG
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* 4701 - DHCID
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* 4892 - id.server
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* 5001 - NSID
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* 5155 - NSEC3 record
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* 5205 - HIP record
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* 5702 - SHA2 in the DNS
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* 5936 - AXFR
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* 6605 - ECDSA
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* xxxx - URI record (draft)
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* xxxx - Dns Update Lease (draft)
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## Loosely based upon
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* `ldns`
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* `NSD`
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* `Net::DNS`
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* `GRONG`
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