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Tom Thorogood b9e1e7529b Avoid calling RR.Header more than once per RR (#891)
* Avoid calling RR.Header more than once per RR

Header is an interface method so there's non-zero overhead when calling
it.

* Reset entire RR_Header in SIG.Sign

This is equivilant (while also clearing Rdlength) while being simpler.
2019-01-04 08:12:32 +00:00
dnsutil util.TrimDomainName() fails when origin doesn't end in dot (#559) 2017-11-08 18:19:10 +00:00
vendor/golang.org/x Run dep ensure -update (#770) 2018-10-05 18:29:45 +01:00
.codecov.yml Add codecov yaml to not fail the build (#600) 2017-12-06 10:36:23 +00:00
.gitignore gitignore update 2013-10-15 13:22:35 +00:00
.travis.yml Test coverage for all packages and merge Travis builds (#781) 2018-10-09 18:46:58 +01:00
AUTHORS add AUTHOR file 2014-02-10 17:15:49 +00:00
CONTRIBUTORS Correctly set the Source IP to the received Destination IP (#524) 2017-09-29 10:38:26 +01:00
COPYRIGHT Remove all copyright notices 2014-09-11 20:57:37 +01:00
Gopkg.lock Run dep ensure -update (#770) 2018-10-05 18:29:45 +01:00
Gopkg.toml Run dep ensure -update (#770) 2018-10-05 18:29:45 +01:00
LICENSE Update the copy right for the original GO files 2013-05-12 16:07:06 +02:00
Makefile.fuzz Add fuzzing framework (#580) 2017-11-23 09:34:31 +00:00
Makefile.release Release: plain push is also needed 2018-01-10 08:17:22 +00:00
README.md Add newly released RFC to readme (#878) 2019-01-03 17:37:57 +01:00
acceptfunc.go Make defaultMsgAcceptFunc a func not a var (#887) 2019-01-04 08:09:04 +00:00
client.go Revert doh (#800) 2018-11-01 20:16:39 +00:00
client_test.go Prevent timeout in TestConcurrentExchanges (#862) 2018-12-04 07:29:08 +00:00
clientconfig.go fix: panicing on options parsing. (#642) 2018-03-01 06:22:09 -08:00
clientconfig_test.go fix: panicing on options parsing. (#642) 2018-03-01 06:22:09 -08:00
dane.go Improve performance by addressing some low hanging fruit. (#444) 2017-02-02 07:33:49 +00:00
defaults.go Stop using packDomainName in IsDomainName (#873) 2019-01-03 17:39:37 +01:00
dns.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
dns_bench_test.go Reduce allocations in ReverseAddr (#872) 2018-12-30 10:28:48 +00:00
dns_test.go Properly calculate compressed message lengths (#833) 2018-11-30 10:03:41 +10:30
dnssec.go Avoid calling RR.Header more than once per RR (#891) 2019-01-04 08:12:32 +00:00
dnssec_keygen.go 458+dep (#591) 2017-11-27 10:49:53 +00:00
dnssec_keyscan.go Add new ZoneParser API (#794) 2018-10-20 11:47:56 +10:30
dnssec_privkey.go Use RFC 8032 functions added to x/crypto/ed25519 (#715) 2018-07-25 13:01:44 +01:00
dnssec_test.go Eliminate lexer goroutines (#792) 2018-10-15 17:42:31 +10:30
doc.go doc: Clean up README and doc.go (#817) 2018-11-27 14:39:19 +00:00
duplicate.go Add IsDuplicate function (#699) 2018-06-23 09:12:31 +01:00
duplicate_generate.go Use (net.IP).Equal in isDuplicate functions (#882) 2019-01-03 17:32:22 +01:00
duplicate_test.go Add IsDuplicate function (#699) 2018-06-23 09:12:31 +01:00
dyn_test.go Remove all copyright notices 2014-09-11 20:57:37 +01:00
edns.go Use binary.BigEndian.PutUint32 in EDNS0_EXPIRE.pack (#875) 2018-12-30 16:44:37 +01:00
edns_test.go Use copy instead of loop in EDNS0_SUBNET.unpack (#825) 2018-11-27 14:32:41 +00:00
example_test.go fix a stupid mistake "undefined: zone" 2015-09-30 09:42:47 -07:00
format.go Remove unused variable from switch in Field (#876) 2018-12-30 16:41:07 +01:00
fuzz.go Add fuzzing framework (#580) 2017-11-23 09:34:31 +00:00
generate.go Add new ZoneParser API (#794) 2018-10-20 11:47:56 +10:30
generate_test.go Add new ZoneParser API (#794) 2018-10-20 11:47:56 +10:30
issue_test.go Tests updates (#556) 2017-11-08 10:01:19 +00:00
labels.go Remove redundant parenthesis (#727) 2018-08-16 17:05:27 +01:00
labels_test.go Stop using packDomainName in IsDomainName (#873) 2019-01-03 17:39:37 +01:00
leak_test.go Revert doh (#800) 2018-11-01 20:16:39 +00:00
length_test.go Reduce compression memory use with map[string]uint16 (#852) 2018-12-02 08:50:51 +10:30
listen_go111.go Use correct build constraints for listen_*.go files (#750) 2018-09-26 09:12:54 +01:00
listen_go_not111.go Use correct build constraints for listen_*.go files (#750) 2018-09-26 09:12:54 +01:00
msg.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
msg_generate.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
msg_helpers.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
msg_helpers_test.go Fix unpackString bug: 127 DEL is unprintable (#755) 2018-09-27 07:47:48 +01:00
msg_test.go Pretty print test compression map differences (#853) 2018-12-01 08:30:40 +00:00
nsecx.go Hoist SHA1 check in HashName 2018-11-29 10:44:01 +10:30
nsecx_test.go Add a HashName benchmark 2018-11-29 10:28:29 +10:30
parse_test.go Add NULL record (#840) 2018-12-30 09:45:18 +00:00
privaterr.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
privaterr_test.go Test: remove all Logf/Log (#547) 2017-11-03 15:50:01 +00:00
remote_test.go Add remote test 2015-08-22 10:50:07 +01:00
reverse.go Move all reversed map creation into reverse.go (#889) 2019-01-04 08:10:15 +00:00
rr_test.go Eliminate lexer goroutines (#792) 2018-10-15 17:42:31 +10:30
sanitize.go Avoid calling RR.Header more than once per RR (#891) 2019-01-04 08:12:32 +00:00
sanitize_test.go Tests updates (#556) 2017-11-08 10:01:19 +00:00
scan.go Move scanner comment handling out of scanRR (#877) 2018-12-31 10:20:26 +01:00
scan_rr.go Move scanner comment handling out of scanRR (#877) 2018-12-31 10:20:26 +01:00
scan_test.go Add new ZoneParser API (#794) 2018-10-20 11:47:56 +10:30
serve_mux.go Rework and optimise ServeMux (#754) 2018-09-27 07:48:02 +01:00
serve_mux_test.go Rework and optimise ServeMux (#754) 2018-09-27 07:48:02 +01:00
server.go Use a value reciever for defaultReader (#888) 2019-01-04 08:09:23 +00:00
server_test.go review 2018-11-28 22:25:28 +00:00
sig0.go Avoid calling RR.Header more than once per RR (#891) 2019-01-04 08:12:32 +00:00
sig0_test.go Lowercase all error msg from the tests 2015-11-26 14:12:38 +00:00
singleinflight.go Prevent timeout in TestConcurrentExchanges (#862) 2018-12-04 07:29:08 +00:00
smimea.go Golint fixes (#456) 2017-02-15 20:40:16 +00:00
tlsa.go Fix for miekg/dns issue #289: support the SMIMEA record (#410) 2016-10-17 18:09:52 +01:00
tsig.go Properly calculate compressed message lengths (#833) 2018-11-30 10:03:41 +10:30
tsig_test.go Fix TSIG bug releated to ID substitution (#504) 2017-08-12 20:21:44 +01:00
types.go Move all reversed map creation into reverse.go (#889) 2019-01-04 08:10:15 +00:00
types_generate.go Add NULL record (#840) 2018-12-30 09:45:18 +00:00
types_test.go Optimise sprintX functions in types.go (#757) 2018-10-06 02:06:59 +09:30
udp.go Rollback PR #738 because it breaks compatibility with Windows (#765) 2018-09-29 10:25:59 +01:00
udp_test.go Rollback PR #738 because it breaks compatibility with Windows (#765) 2018-09-29 10:25:59 +01:00
udp_windows.go Rollback PR #738 because it breaks compatibility with Windows (#765) 2018-09-29 10:25:59 +01:00
update.go Avoid calling RR.Header more than once per RR (#891) 2019-01-04 08:12:32 +00:00
update_test.go ClassANY: don't convert CLASS255 to ANY (#618) 2018-01-07 17:57:04 +00:00
version.go Release 1.1.1 2018-12-02 09:00:23 +00:00
version_test.go Add semver (#595) 2017-12-06 09:46:54 +00:00
xfr.go TSIG name must be presented in canonical form (#574) 2017-11-17 13:17:47 +00:00
zduplicate.go Use (net.IP).Equal in isDuplicate functions (#882) 2019-01-03 17:32:22 +01:00
zmsg.go Move RR header packing out of generated code (#885) 2019-01-04 10:09:14 +10:30
ztypes.go Rename NULL's Anything field to Data (#880) 2019-01-03 21:03:38 +10:30

README.md

Build Status Code Coverage Go Report Card

Alternative (more granular) approach to a DNS library

Less is more.

Complete and usable DNS library. All 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.

We try to keep the "master" branch as sane as possible and at the bleeding edge of standards, avoiding breaking changes wherever reasonable. We support the last two versions of Go.

Goals

  • KISS;
  • Fast;
  • Small API. If it's easy to code in Go, don't make a function for it.

Users

A not-so-up-to-date-list-that-may-be-actually-current:

Send pull request if you want to be listed here.

Features

  • UDP/TCP queries, IPv4 and IPv6
  • RFC 1035 zone file parsing ($INCLUDE, $ORIGIN, $TTL and $GENERATE (for all record types) are supported
  • Fast
  • Server side programming (mimicking the net/http package)
  • Client side programming
  • DNSSEC: signing, validating and key generation for DSA, RSA, ECDSA and Ed25519
  • EDNS0, NSID, Cookies
  • AXFR/IXFR
  • TSIG, SIG(0)
  • DNS over TLS (DoT): encrypted connection between client and server over TCP
  • DNS name compression

Have fun!

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

Building

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

go get github.com/miekg/dns
go build github.com/miekg/dns

Examples

A short "how to use the API" is at the beginning of doc.go (this also will show when you call godoc github.com/miekg/dns).

Example programs can be found in the github.com/miekg/exdns repository.

Supported RFCs

all of them

  • 103{4,5} - DNS standard
  • 1348 - NSAP record (removed the record)
  • 1982 - Serial Arithmetic
  • 1876 - LOC record
  • 1995 - IXFR
  • 1996 - DNS notify
  • 2136 - DNS Update (dynamic updates)
  • 2181 - RRset definition - there is no RRset type though, just []RR
  • 2537 - RSAMD5 DNS keys
  • 2065 - DNSSEC (updated in later RFCs)
  • 2671 - EDNS record
  • 2782 - SRV record
  • 2845 - TSIG record
  • 2915 - NAPTR record
  • 2929 - DNS IANA Considerations
  • 3110 - RSASHA1 DNS keys
  • 3225 - DO bit (DNSSEC OK)
  • 340{1,2,3} - NAPTR record
  • 3445 - Limiting the scope of (DNS)KEY
  • 3597 - Unknown RRs
  • 403{3,4,5} - DNSSEC + validation functions
  • 4255 - SSHFP record
  • 4343 - Case insensitivity
  • 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
  • 5966 - TCP implementation recommendations
  • 6605 - ECDSA
  • 6725 - IANA Registry Update
  • 6742 - ILNP DNS
  • 6840 - Clarifications and Implementation Notes for DNS Security
  • 6844 - CAA record
  • 6891 - EDNS0 update
  • 6895 - DNS IANA considerations
  • 6975 - Algorithm Understanding in DNSSEC
  • 7043 - EUI48/EUI64 records
  • 7314 - DNS (EDNS) EXPIRE Option
  • 7477 - CSYNC RR
  • 7828 - edns-tcp-keepalive EDNS0 Option
  • 7553 - URI record
  • 7858 - DNS over TLS: Initiation and Performance Considerations
  • 7871 - EDNS0 Client Subnet
  • 7873 - Domain Name System (DNS) Cookies
  • 8080 - EdDSA for DNSSEC
  • 8499 - DNS Terminology

Loosely Based Upon