[sr-dev] Redis disconnect when websocket endpoint try to call

[Yuriy Gorlichenko]

Hello. I use this version of kamailio

 kamailio -v
version: kamailio 4.3.0-dev4 (x86_64/linux) a6510b
flags: STATS: Off, USE_TCP, USE_TLS, 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: a6510b
compiled on 05:30:34 Feb 18 2015 with gcc 4.8.2


Now i Have some problems with redis.

 I try to get some replies from redis. Time after time redis request give
me null result.

I see this error at log when this reply received

                 redisc_exec(): Redis error: Server closed the connection

This happens only with websocket endpoints. My queries is:

redis_cmd("srv1", "EXISTS $si", "s");

So at xLOG i see that $si correctly sended, but result is null. At db I
keep key IP with value TIMESTAMP

Intresting that route, that gives me this result idependend of WS or UDP
endpoint. IT does not know about it anything.

I try to cach redis-cli: monitor log, but this answered me nothing.

I Logging $si before redis replies and it is ok.

My exaple of ROUTE that takes this walues from redis is:

route[TOASTERISK] {
 redis_cmd("srv1", "EXISTS $si", "s");
xlog("L_INFO","ASTERISK with ip $si is {$redis(s=>value)}");

}

Asterisk sends me option method requests every 10 seconds and I set it to
redis with key
$si  and value $TS

IT lives at redis 20 seconds and rewrites with every new request

so when invite come to kamailio it just check - does this key exists (ROUTE
TOASTERISK)

When I catch this error (null) I look at redis and see that key exisit. But
it does not mateer. If it not exisit redis myst reply with 0. Now with null.
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