Discovery with DNS SD

The directory is published as a DNS-SD service with:

• Service Type: _wot._tcp
• Subtype: _directory

The instance name and domain are configurable.

CLI examples

Browse and resolve (lookup) instances with _wot._tcp type and _directory subtype:

Avahi (Linux)

$ avahi-browse _directory._sub._wot._tcp --resolve
+   eth0 IPv4 Local Thing Directory                         _wot._tcp            local
=   eth0 IPv4 Local Thing Directory                         _wot._tcp            local
   hostname = [raspi.local]
   address = [192.168.1.113]
   port = [8081]
   txt = ["version=master" "td=/td"]

Bonjour (macOS/windows)

# Browse
% dns-sd -B _wot._tcp,_directory                       
Browsing for _wot._tcp,_directory
DATE: ---Tue 16 Jun 2020---
11:30:43.391  ...STARTING...
Timestamp     A/R    Flags  if Domain               Service Type         Instance Name
11:30:43.392  Add        2   5 local.               _wot._tcp.           Local Thing Directory
^C

# Lookup
% dns-sd -L "Local Thing Directory" _wot._tcp local
Lookup Local Thing Directory._wot._tcp.local
DATE: ---Tue 16 Jun 2020---
11:30:52.811  ...STARTING...
11:30:52.812  Local\032Thing\032Directory._wot._tcp.local. can be reached at raspi.local.:8081 (interface 5)
 td=/td version=master
^C