[SR-Users] dispatcher.list reversed by dispatch.c reindex_dests()

[Giovanni Maruzzelli]

Anyone got this one ?

sent from my mobile,
Giovanni Maruzzelli
cell: +39 347 266 56 18
On Sep 19, 2015 7:58 PM, "Giovanni Maruzzelli" <gmaruzz at gmail.com> wrote:

> Hello,
>
> dispatcher gives me destination sets with entries in reverse order:
>
> I have installed from Kamailio deb repository packages version
> 4.3.2+jessie.
>
> # kamailio -V
> version: kamailio 4.3.2 (x86_64/linux)
> flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS,
> DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC,
> F_MALLOC, DBG_F_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE,
> USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16,
> 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 4.9.2
>
> I configured dispatcher:
>
> modparam("dispatcher", "use_default", 1)
> modparam("dispatcher", "list_file", "/etc/kamailio/dispatcher.list")
> modparam("dispatcher", "flags", 3)
> modparam("dispatcher", "dst_avp", "$avp(AVP_DST)")
> modparam("dispatcher", "grp_avp", "$avp(AVP_GRP)")
> modparam("dispatcher", "cnt_avp", "$avp(AVP_CNT)")
> modparam("dispatcher", "sock_avp", "$avp(AVP_SOCK)")
> modparam("dispatcher", "ds_ping_interval", 5)
> modparam("dispatcher", "ds_probing_mode", 1)
>
> I have this dispatcher.list:
>
> 1 sip:192.168.1.144:5060 2
> 1 sip:192.168.1.145:5060 2
> 1 sip:192.168.1.146:5060 2
>
> 2 sip:192.168.1.146:5060 2
> 2 sip:192.168.1.145:5060 2
>
> So, I expect dispatcher to have:
>
> set 1 first two destinations in distribution via hash on callid, and third
> destination as failover (192.168.1.146 <http://192.168.1.146:5060>) .
> set 2 all traffic on first destination, and if first fails, all traffic
> will failover to second destination (192.168.1.145
> <http://192.168.1.146:5060>).
>
> Instead reindex_dests shuffle the sets upside down:
>
> DEBUG: dispatcher [dispatch.c:375]: add_dest2list(): dest [1/1] <sip:
> 192.168.1.144:5060>
> DEBUG: dispatcher [dispatch.c:375]: add_dest2list(): dest [1/2] <sip:
> 192.168.1.145:5060>
> DEBUG: dispatcher [dispatch.c:375]: add_dest2list(): dest [1/3] <sip:
> 192.168.1.146:5060>
> DEBUG: dispatcher [dispatch.c:375]: add_dest2list(): dest [2/1] <sip:
> 192.168.1.146:5060>
> DEBUG: dispatcher [dispatch.c:375]: add_dest2list(): dest [2/2] <sip:
> 192.168.1.145:5060>
> DEBUG: dispatcher [dispatch.c:494]: reindex_dests(): found [2] dest sets
> DEBUG: dispatcher [dispatch.c:139]: ds_print_sets(): dst>> 2 sip:
> 192.168.1.145:5060 2 0 (,0,0)
> DEBUG: dispatcher [dispatch.c:139]: ds_print_sets(): dst>> 2 sip:
> 192.168.1.146:5060 2 0 (,0,0)
> DEBUG: dispatcher [dispatch.c:139]: ds_print_sets(): dst>> 1 sip:
> 192.168.1.146:5060 2 0 (,0,0)
> DEBUG: dispatcher [dispatch.c:139]: ds_print_sets(): dst>> 1 sip:
> 192.168.1.145:5060 2 0 (,0,0)
> DEBUG: dispatcher [dispatch.c:139]: ds_print_sets(): dst>> 1 sip:
> 192.168.1.144:5060 2 0 (,0,0)
> DEBUG: dispatcher [dispatcher.c:347]: mod_init(): loaded dispatching list
>
> So, Kamailio give me set 1 and set 2 as per post-reindex_dests, and
> failover is 192.168.1.144 for set 1, and 192.168.1.146 for set 2.
>
> Is this the expected behavior?
> Am I doing something wrong in configuration?
>
> Thank you all in advance,
>
> -giovanni
>
>
> Sincerely,
>
> Giovanni Maruzzelli
> Cell : +39-347-2665618
>
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