[SR-Users] How to disable GRUU?

[Алексей Дырявко]

Hello.

kamailio -v
version: kamailio 5.4.8 (x86_64/linux)
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE,
USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC,
TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024,
BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: unknown
compiled with gcc 8.3.0


How can I disable GRUU support completely?


Sip client Grandstream NT-XXX sends default registration request with
"reg-id" and "instance"

REGISTER sip:kamailio3.telecom.ru SIP/2.0
Via: SIP/2.0/UDP 172.17.0.252:5060;branch=z9hG4bK1645839794;rport
From: "7777" sip:7777 at kamailio3.telecom.ru;tag=53756161
To: sip:7777 at kamailio3.telecom.ru
Call-ID: 308071885-5060-1
CSeq: 2031 REGISTER
Contact: sip:7777 at 172.17.0.252:5060
;reg-id=1;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB"
Authorization: Digest username="7777", realm="kamailio3.telecom.ru",
nonce="Ysv842LL+7dABGNcyuYZhl1L2QTPgzFq", uri="sip:kamailio3.telecom.ru",
response="0ef43a754a7422dd9d8ed36f91aa546
, algorithm=MD5
Max-Forwards: 70
User-Agent: Grandstream HT-502 V2.0A 1.0.9.1 chip V2.2
Supported: path
Expires: 1800
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER,
UPDATE
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.17.0.252:5060
;branch=z9hG4bK1645839794;rport=5060;received=172.17.0.252
From: "7777" sip:7777 at kamailio3.telecom.ru;tag=53756161
To: sip:7777 at kamailio3.telecom.ru
;tag=5bf75eb19869d3e257cd1fde2cbf92c4.7224507f
Call-ID: 308071885-5060-1
CSeq: 2031 REGISTER
Contact: sip:7777 at 172.17.0.252:5060;expires=1800;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB";reg-id=1,
sip:07777 at 172.17.0.250:5060;expires=101, <sip:7777 at 172.1
0.250:5061>;expires=101, sip:7777 at 172.17.0.252:5062
;expires=607;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB";reg-id=2
Server: kamailio (5.4.8 (x86_64/linux))
Content-Length: 0

REGISTER sip:kamailio3.telecom.ru SIP/2.0
Via: SIP/2.0/UDP 172.17.0.252:5062;branch=z9hG4bK212965390;rport
From: "7777" sip:7777 at kamailio3.telecom.ru;tag=1540711120
To: sip:7777 at kamailio3.telecom.ru
Call-ID: 1127299103-5062-1
CSeq: 2031 REGISTER
Contact: sip:7777 at 172.17.0.252:5062
;reg-id=2;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB"
Authorization: Digest username="7777", realm="kamailio3.telecom.ru",
nonce="Ysv862LL+78cGZE/vXJnQfemhCMiBilm", uri="sip:kamailio3.telecom.ru",
response="6c3333159d41ae0fcaabfbbd8c5026e
, algorithm=MD5
Max-Forwards: 70
User-Agent: Grandstream HT-502 V2.0A 1.0.9.1 chip V2.2
Supported: path
Expires: 1800
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER,
UPDATE
Content-Length: 0

SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.17.0.252:5062
;branch=z9hG4bK212965390;rport=5062;received=172.17.0.252
From: "7777" sip:7777 at kamailio3.telecom.ru;tag=1540711120
To: sip:7777 at kamailio3.telecom.ru
;tag=5bf75eb19869d3e257cd1fde2cbf92c4.451b5a53
Call-ID: 1127299103-5062-1
CSeq: 2031 REGISTER
Contact: sip:7777 at 172.17.0.252:5060;expires=1792;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB";reg-id=1,
sip:7777 at 172.17.0.250:5060;expires=93, <sip:7777 at 172.17
.250:5061>;expires=93, sip:7777 at 172.17.0.252:5062
;expires=1800;+sip.instance="urn:uuid:00000000-0000-1000-8000-000B82566BBB";reg-id=2
Server: kamailio (5.4.8 (x86_64/linux))
Content-Length: 0

Later, when I use branching (with q=-1.0), the kamailio sends an Invite to
only one Contact from 7777 at 172.17.0.252:5062

If I use another Sip client without "instance" , such as Linksys-PAP2T,
branching works fine.

GRUU is always disabled
modparam("registrar", "gruu_enabled", 0)
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