As per the OSC 1.1 proposal, §5.2:
Services available over IP networks can be located with DNS-SD (aka Zeroconf). These may be listed as protocol _osc._udp or _osc._tcp (with reservations, users may wish to register their own protocol that simply uses OSC). The attributes given in Table 4 are specified in the TXT field for DNS-SD, e.g. suppose we have a bidirectional endpoint over TCP at port 5000:
_osc._tcp.localhost:5000
txtvers=1
version=1.1
framing=slip
uri=http://myapp.com/
types=ifsbhdu
References
As per the OSC 1.1 proposal, §5.2:
References