How to send SRV records?

[song940]

How to send SRV records?

[BasToTheMax]

^

[BasToTheMax]

:)

[stefanwerfling]

This is very simple :)

First look for structur: https://www.dynu.com/Resources/DNS-Records/SRV-Record

Extend DnsAnswer and add the fields, any field have a seperator:

interface DnsAnswerSRV extends DnsAnswer {
  priority: number;
  weight: number;
  port: number;
  target_host: string;
}

Now you can send:

const response = DNS.Packet.createResponseFromRequest(request);

....

response.answers.push({
name: '_sip._udp.example.com',
type: DNS.Packet.TYPE.SRV,
class: DNS.Packet.CLASS.IN,
ttl: 3600,
priority: 10,
weight: 5,
port: 5060,
target_host: 'siphost.com'
} as DnsAnswerSRV);

...

send(response);

I hope it help! I use it by my project: https://github.com/stefanwerfling/flyingfish/blob/main/backend/src/inc/Dns/Dns2Server.ts#L129

[BasToTheMax]

Thanks.