[SR-Users] FAILEDOVER ROUTING WITH DNS SRV Records

[Patrick Karton]

Hello,

im using kamaliio 5.5.3 and I want to do failedover routing with DNS SRV Records.

in my lab i have these SRV records

;; ANSWER SECTION:
voip.oov-obs-tools-dev.svc.cluster.local. 5 IN SRV 0 33 5060 100-68-7-74.voip.oov-obs-tools-dev.svc.cluster.local.
voip.oov-obs-tools-dev.svc.cluster.local. 5 IN SRV 0 33 5060 100-68-7-75.voip.oov-obs-tools-dev.svc.cluster.local.
voip.oov-obs-tools-dev.svc.cluster.local. 5 IN SRV 0 33 5060 100-68-7-76.voip.oov-obs-tools-dev.svc.cluster.local.

;; ADDITIONAL SECTION:
100-68-7-76.voip.oov-obs-tools-dev.svc.cluster.local. 5 IN A 100.68.7.76
100-68-7-75.voip.oov-obs-tools-dev.svc.cluster.local. 5 IN A 100.68.7.75
100-68-7-74.voip.oov-obs-tools-dev.svc.cluster.local. 5 IN A 100.68.7.74


my config script

use_dns_cache=on
use_dns_failover=on
dns_srv_lb=on

$du = "voip.oov-obs-tools-dev.svc.cluster.local";

t_relay();


after t_relay() is called the INVITE is send to one the 3 ips corresponding to fqdn but if the first ip does not
send response. the two others ips are not tried.


what i want is that all the ips resolved are tried until one succeeds.

is there something to do to achieve that ?
do i need to interact with failure route to try next ips ?


Thanks for help.


version: kamailio 5.5.3 (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_BLOCKLIST, 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 10.2.1





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