dnscontrol/documentation/functions/domain/SRV.md

name	parameters	parameter_types
SRV	name priority weight port target modifiers...	name priority weight port target modifiers... string number number number string RecordModifier[]

SRV adds a SRV record to a domain. The name should be the relative label for the record.

Priority, weight, and port are ints.

D("example.com", REGISTRAR, DnsProvider("GCLOUD"),
  // Create SRV records for a a SIP service:
  //               pr  w   port, target
  SRV('_sip._tcp', 10, 60, 5060, 'bigbox.example.tld.'),
  SRV('_sip._tcp', 10, 20, 5060, 'smallbox1.example.tld.'),
);