Specify "allow methods" in OPTIONS response with PJSIP channels

Asterisk Asterisk SIP
1

Hi everyone,

I have an asterisk configuration that uses PJSIP channels.

For my application, asterisk should reply to OPTIONS requests coming from certain endpoints with only the following methods in the header “Allow”:

  • INVITE
  • ACK
  • CANCEL
  • BYE
  • OPTIONS
  • PRACK
  • UPDATE
  • INFO

But not the methods:

  • SUBSCRIBE
  • REFER
  • MESSAGE
  • NOTIFY
  • REGISTER

Is there a way (ideally by configuration) to get that behavior? Please note that asterisk should be able to send different “allow methods” to different endpoints.

I think I need something like the configuration variable disallowed_methods you could put in sip.conf, only I need it for PJSIP channels.

Thank you very much.

2

There is no ability to do this as of right now. Code would have to be added for such a thing, and it’d require a little bit of work due to the way that the header is stored (there is one header for all of PJSIP for that - you’d have to take that, manipulate a copy, and place it in the OPTIONS response).

3

They might want to deny thoes methods everywhere.

4

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