Trying to install the package with go get for Go1. I get the following response:

$ sudo go get github.com/davecheney/mdns package dns: unrecognized import path "dns"

Let me know if you want to run/try anything.

Cheers!

Ben

In miekg/dns@570bf8dc69 booleans were replaced with errors. After running go get github.com/davecheney/mdns on a fresh Go 1.0.3 install on 64 bit linux, running the publisher example yields the following error:

# github.com/davecheney/mdns /usr/local/go/src/pkg/github.com/davecheney/mdns/mdns.go:258: non-bool ok (type error) used as if condition /usr/local/go/src/pkg/github.com/davecheney/mdns/mdns.go:271: non-bool msg.Unpack(buf[:read]) (type error) used as if condition

It looks like a typo, I couldn't get my own (non _ssh) service to register/show up on Bonjour browsers.. Your example probably works because the _ssh service already existed?

goinstall doesn't exist, and go install doesn't work (unless the package was already downloaded). go get is the way to download and install a package.

also fix a typo in doc link, plus use go doc.

next is error:

➜  mdns ./publish
2017/03/21 15:39:26 Failed to listen [ff02::fb]:5353: listen udp6 [ff02::fb]:5353: setsockopt: can't assign requested address
2017/03/21 18:19:38 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:19:38 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:19:39 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:34:28 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:34:28 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:34:29 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:36:04 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:36:04 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata
2017/03/21 18:36:04 Could not read from &{{%!s(*net.netFD=&{{0 0 0} 5 2 2 false false udp4 0xc420076b10 <nil> <nil> {20725424}})}}: dns: bad rdata

I have running a python mdns server, but i can not receive any info from it.

So following my offer to get involved an improve the library, I'm wondering if we should implement a sane golang wrapper around the native system stuff that already exist for this in C.

(From O'Reilly Zeroconf Networking: The Definitive Guide) (or man (3) DNSServiceRegister)

DNSServiceErrorType DNSServiceRegister(
         DNSServiceRef *sdRef,
         DNSServiceFlags flags,
         uint32_t interfaceIndex,
         const char *name,
         const char *regtype,
         const char *domain,
         const char *host,
         uint16_t port,
         uint16_t txtLen,
         const void *txtRecord,
         DNSServiceRegisterReply callBack,
         void *context);

It's a callback driven API designed to be used with function pointers and an epoll/select loop around the underlying pseudo file descriptors returned by some of the other methods in the API.

Deferring to the C API might have some positive effects, such as completeness of the implementation, and robustness through having already made it into Linux, and supposedly having been tested and audited along the way.

The natural cons are that it's not supported in any way on Windows this way, where a native multicast DNS server (the likes of which you already have partially implemented) might be more portable.

HI Dave, you weren't wrong in IRC today when you told me that it was kindof broken. I'd love to help you pick this library up, as I'm a big fan of Multicast DNS. If I can help, I'd love to.

I think Some interface such as mdns.AdvertiseService("192.168.150.40", 22, "My Awesome Service") (ignoring for now, how we'd specify what kind of service it is) would be amazing.

I've forked the repository, and will try and diagnose, and cure my present failure, which is:

$ GOPATH=$(pwd) go run main.go
Success.. listening: 0.0.0.0:49434
Published MDNS: stora.local. 60 IN A 192.168.1.200
Published MDNS: 200.1.168.192.in-addr.arpa. 60 IN PTR stora.local.
Published MDNS: _ssh._tcp.local. 60 IN PTR stora._ssh._tcp.local.
Published MDNS: stora._ssh._tcp.local. 60 IN SRV 0 0 22 stora.local.
Published MDNS: stora._ssh._tcp.local. 60 IN TXT ""
Published MDNS: _service._dns-sd._udp.local. 60 IN PTR _ssh._tcp.local.
2013/07/17 19:46:40 Cannot send: write udp6: no route to host
exit status 1

(more or less a verbatim copy from your example, except in a perfect world my service is a pure line-wise TCP socket service, so _ssh is unsuitable, and I'm on a random port every time I start)

When I come up with something useful, I'll send you a pull request.

a coworker is sporadically seeing this on his VM (upon Publish):

2013/01/10 16:20:40 Cound not read from &{%!s(*net.netFD=&{{0 0} 0 false 8 10 2 false 0xf840080280 0xf84008a240 0xf84008a2a0 udp6 0xf84006cce0 <nil> 0 {0 0} 0 {0 0} 0 0})}: dns: buffer size too small
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x28 pc=0x429d2e]

goroutine 9 [running]:
github.com/davecheney/mdns.(*connector).readloop(0xf84006cd40, 0xf8400ce000, 0x0, 0x0)
    /s/go/src/github.com/davecheney/mdns/mdns.go:190 +0x12f
created by github.com/davecheney/mdns.(*connector).mainloop
    /s/go/src/github.com/davecheney/mdns/mdns.go:199 +0x5f

this was against an older version of mikeg/dns ... but we're now testing against latest revision of that repo (will report on that later).

on ubuntu 12.04 and its golang package:

go get -v github.com/davecheney/mdns
github.com/davecheney/mdns (download)
github.com/davecheney/gmx (download)
github.com/miekg/dns (download)
github.com/miekg/radix (download)
github.com/davecheney/gmx
github.com/miekg/radix
github.com/miekg/dns
github.com/davecheney/mdns
# github.com/davecheney/mdns
/s/go/src/github.com/davecheney/mdns/mdns.go:127: undefined: dns.RR_ANY
/s/go/src/github.com/davecheney/mdns/mdns.go:130: undefined: dns.RR_ANY
/s/go/src/github.com/davecheney/mdns/mdns.go:230: undefined: dns.RR_PTR
/s/go/src/github.com/davecheney/mdns/mdns.go:232: rr.Ptr undefined (type dns.RR has no field or method Ptr)
/s/go/src/github.com/davecheney/mdns/mdns.go:236: undefined: dns.RR_SRV
/s/go/src/github.com/davecheney/mdns/mdns.go:238: rr.Target undefined (type dns.RR has no field or method Target)

$ go version
go version go1
$ uname -a
Linux stackato-ha3p 3.2.0-27-virtual #43-Ubuntu SMP Fri Jul 6 14:45:58 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
$ cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS"
NAME="Ubuntu"
VERSION="12.04.1 LTS, Precise Pangolin"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu precise (12.04.1 LTS)"
VERSION_ID="12.04"
$