How do I register a client in sipster?

[BennieBe]

Hi, I got a question regarding how to accept a client register request in sipster.
I setup sipster nodeJS as in the example on github / npm page but when I use a script to call the service, I get this message:

00:12:18.235 sip_endpoint.c  .Request msg REGISTER/cseq=22313 (rdata0x7f7784003e28) from 127.0.0.1:5080 was dropped/unhandled by any modules
00:12:22.235   pjsua_core.c  .RX 485 bytes Request msg REGISTER/cseq=22313 (rdata0x7f7784003e28) from UDP 127.0.0.1:5080:
REGISTER sip:localhost SIP/2.0
Via: SIP/2.0/UDP 192.168.0.11:5080;rport;branch=z9hG4bKPjK83SBBtDEE2NV32HuulSjzMNC4tJRTT4
Max-Forwards: 70
From: <sip:receiver@localhost>;tag=y.eiGJ4bw-ryg19nD61wzqf2r-QDKcmh
To: <sip:receiver@localhost>
Call-ID: o1cMxsJ6sD1pzfKqN7nFZRakFwKjhafI
CSeq: 22313 REGISTER
Contact: <sip:receiver@192.168.0.11:5080;ob>
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Content-Length:  0


--end msg--
00:12:22.235 sip_endpoint.c  .Request msg REGISTER/cseq=22313 (rdata0x7f7784003e28) from 127.0.0.1:5080 was dropped/unhandled by any modules

Seems like I need to implement a module / event or something to accept the registration request. What do I need to do?

Also is there anywhere some documentation or some additional sample code I could look at to make it easier for me to get sipster to work for me?

Thanks in advance for the help!

[mscdex]

The UAC scenario isn't well tested/supported as the main focus/use case is UAS where you are accepting INVITEs.

[BennieBe]

Ok, so if I should use the UAS use case, how would the UAC initiate the request to be invited to a session by the UAS or is this not possible as of now with sipster? How would I need to implement this?