Hello!
I am using PJSIP/PJSUA libraries version 2.1.0. I do not have a STUN server
configured.
TL;DR
I get
SIP/2.0 403 Forbidden - Not Registered! You must register first with a
S-CSCF
When I try to send a SUBSCRIBE request, after the UA has registered
(successfully!) with the IMS. I have to wait until the registration
expires, is automatically refreshed and only then I am able to successfully
send the SUBSCRIBE request!
Long version:
I have 2 NICs:
eth0: 10.0.41.63
eth1: 10.0.3.15
Eth1 has a default route assigned to it, so that is the interface that is
being chosen by default. The problem is, that my IMS server has an IP
10.0.41.61 (thus eth0 should be chosen in the end).
Now, PJSUA is by default configured to update registration info, once
incoming responses differ in the IP addresses, and logs confirm that this
is precisely the case.
I can see that the second REGISTER request is sent with correct Contact
header. SUBSCRIBE request also uses this Contact. The problem is that the
reponse from IMS that I get after sending SUBSCRIBE request is:
SIP/2.0 403 Forbidden - Not Registered! You must register first with a
S-CSCF
and Subscription is Terminated immediately.
I have to wait until the registration expires, to successfully SUBSCRIBE to
other UA. I tried manually refreshing the subscription by
calling pjsua_acc_set_registration(acc_id, PJ_TRUE); but that doesn't make
a difference.
Everything works, as soon as I delete the default route/disable other NICs,
but that shouldn't be needed.
Am I not waiting for something somewhere ? Am I making a mistake somewhere
in my registration/configuration code ?
Logs/code is at the bottom.
Thanks in advance!
Regards,
Radek
Logs showing that PJSUA detects IP change and re-registers. Bothe Contact
headers have correct expires set:
21:31:26.732 tsx0x83e778 .Incoming Response msg 200/REGISTER/cseq=44135
(rdata0x835ab8) in state Calling
21:31:26.732 tsx0x83e778 ..State changed from Calling to Completed,
event=RX_MSG
21:31:26.734 pjsua_acc.c ....SIP outbound status for acc 0 is not active
21:31:26.734 pjsua_acc.c ....IP address change detected for account 0 (
10.0.3.15:5071 --> 10.0.41.63:5071). Updating registration (using method 2)
21:31:26.734 pjsua_acc.c ....Acc 0: setting registration..
21:31:26.734 endpoint .....Request msg REGISTER/cseq=44135
(tdta0x83fd40) created.
21:31:26.734 tsx0x841da8 ......Transaction created for Request msg
REGISTER/cseq=44136 (tdta0x83fd40)
21:31:26.734 tsx0x841da8 .....Sending Request msg REGISTER/cseq=44136
(tdta0x83fd40) in state Null
21:31:26.734 sip_resolve.c ......Starting async DNS A query:
target=pcscf.open-ims.test, transport=Unspecified, port=4060
21:31:26.734 resolver.c ......Picked up DNS A record for
pcscf.open-ims.test from cache, ttl=300
21:31:26.734 pjsua_core.c ......TX 576 bytes Request msg
REGISTER/cseq=44136 (tdta0x83fd40) to UDP 10.0.41.61:4060:
REGISTER sip:open-ims.test SIP/2.0
Via: SIP/2.0/UDP 10.0.41.63:5071
;rport;branch=z9hG4bKPjc3Dz.We8eVebvXaX0WLQbGVA7KN00NHJ
Route: <sip:pcscf.open-ims.test:4060;lr>
Max-Forwards: 70
From: <sip:alice@xxxxxxxxxxxxx>;tag=u5hk42TCupQFDzAlKuTdzMF8DfSNssPz
To: <sip:alice at open-ims.test>
Call-ID: R2-QND6HB144-vsdzI118Ay-p.uObe7i
CSeq: 44136 REGISTER
Contact: <sip:alice at 10.0.41.63:5071;ob>
Contact: <sip:alice at 10.0.3.15:5071;ob>;expires=0
Expires: 300
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE, NOTIFY,
REFER, MESSAGE, OPTIONS
Content-Length: 0
This is how I create the contact for initial SUBSCRIBE request:
pj_pool_t *tmp_pool = NULL;
pj_str_t contact;
pj_status_t status;
pjsua_acc *acc = pjsua_get_acc();
if (acc->contact.slen) {
contact = acc->contact;
} else {
tmp_pool = pjsua_pool_create("tmpbuddy", 512, 256);
status = pjsua_acc_create_uac_contact(tmp_pool, &contact,
pjsua_acc_get_default(),
&servlet_uri);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to generate Contact header",
status);
pj_pool_release(tmp_pool);
}
}
This is how I register the user account:
pjsua_acc_config cfg;
pj_status_t status;
pjsua_acc_config_default(&cfg);
cfg.id = pj_str("sip:" SIP_USER "@" SIP_DOMAIN);
cfg.reg_uri = pj_str("sip:" SIP_DOMAIN);
cfg.cred_count = 1;
cfg.reg_timeout = 300;
cfg.cred_info[0].realm = pj_str("*");
cfg.cred_info[0].scheme = pj_str("digest");
cfg.cred_info[0].username = pj_str(SIP_USER "@" SIP_DOMAIN);
cfg.cred_info[0].data_type = PJSIP_CRED_DATA_PLAIN_PASSWD;
cfg.cred_info[0].data = pj_str(SIP_PASSWD);
status = pjsua_acc_add(&cfg, PJ_TRUE, &acc_id);
if (status != PJ_SUCCESS) {
error_exit("Error adding account", status);
}
// Wait until successfully registered
pjsua_acc_info test;
pjsua_acc_get_info(acc_id, &test);
while (test.status != 200) {
pjsua_acc_get_info(acc_id, &test);
}
Configuration of UDP transport:
{
pjsua_transport_config cfg;
pjsua_transport_config_default(&cfg);
cfg.port = (pj_uint16_t) SIP_PORT;
status = pjsua_transport_create(PJSIP_TRANSPORT_UDP, &cfg, NULL);
if (status != PJ_SUCCESS)
error_exit("Error creating transport", status);
}
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