[SR-Users] Evapi module is not broadcasting any data

[Efelin Novak]

Hi folks,

I came into a problem with evapi module, while I was trying to make the
CGRateS tutorial work. It does not send any messages at all.

Taken steps:

I start kamailio with debug=3.

I start:
  CGRates (on the kamailio machine)
  telnet 192.168.30.29 8448 (from my PC)
  tcpdump port 8448 -A -s0 -i any (on the kamailio machine)

Telnet command successfully connects to kamailio. Kamailio yells:

root at cgrates:/opt/kamailio/src/kamailio-4.4/kamailio# 11(12205) DEBUG:
evapi [evapi_dispatch.c:453]: evapi_accept_client(): new connection -
pos[1] from: [192.168.30.1:40312]
11(12205) INFO: <script>: Starting Evapi connector srcaddr 192.168.30.1
srcport  40312 condix 1
11(12205) DEBUG: htable [ht_var.c:90]: pv_set_ht_cell(): set value for
$sht(cgrconn=>cgr)

A similar message is printed when CGRateS connects in.

Afterwards I make a call to Kamailio. INVITE is routed to a following
command:

evapi_async_relay("{\"event\":\"CGR_AUTH_REQUEST\",
                \"tr_index\":\"$T(id_index)\",
                \"tr_label\":\"$T(id_label)\",
                \"cgr_reqtype\":\"$dlg_var(cgrReqType)\",
                \"cgr_tenant\":\"$dlg_var(cgrTenant)\",
                \"cgr_account\":\"$dlg_var(cgrAccount)\",
                \"cgr_destination\":\"$dlg_var(cgrDestination)\",
                \"cgr_setuptime\":\"$TS\",
                \"cgr_computelcr\":\"true\"}");

Now the kamailio writes:

.
.
.
 2(12196) DEBUG: dialog [dlg_var.c:260]: print_lists(): Dialog var-list
(0x7f196d1c5248):
 2(12196) DEBUG: dialog [dlg_var.c:265]: print_lists(): cgrDestination=1002
(flags 1)
 2(12196) DEBUG: dialog [dlg_var.c:265]: print_lists(): cgrAccount=1001
(flags 1)
 2(12196) DEBUG: dialog [dlg_var.c:265]: print_lists(): cgrTenant=
cgrates.org (flags 1)
 2(12196) DEBUG: dialog [dlg_var.c:265]: print_lists(): cgrReqType=*prepaid
(flags 1)
 2(12196) DEBUG: dialog [dlg_hash.c:922]: dlg_unref(): unref dlg
0x7f196d1c4c08 with 1 -> 1
 2(12196) DEBUG: evapi [evapi_dispatch.c:603]: evapi_relay(): relaying
event data [{"event":"CGR_AUTH_REQUEST",
"tr_index":"59559",
"tr_label":"1886589610",
"cgr_reqtype":"*prepaid",
"cgr_tenant":"cgrates.org",
"cgr_account":"1001",
"cgr_destination":"1002",
"cgr_setuptime":"1471623526",
"cgr_computelcr":"true"}] (246)
 2(12196) DEBUG: evapi [evapi_dispatch.c:628]: evapi_relay(): sending
[0x7f196d1c88b8] [246:{"event":"CGR_AUTH_REQUEST",
"tr_index":"59559",
"tr_label":"1886589610",
"cgr_reqtype":"*prepaid",
"cgr_tenant":"cgrates.org",
"cgr_account":"1001",
"cgr_destination":"1002",
"cgr_setuptime":"1471623526",
"cgr_computelcr":"true"},] (251)
 2(12196) DEBUG: evapi [evapi_dispatch.c:630]: evapi_relay(): Len of write
is 8
 2(12196) INFO: <script>: suspended transaction: 59559 / 1886589610
.
.
.

However no reply from CGRateS comes, tcpdump is quiet (no message was sent
or received), as well as my testing telnet session (nothing is received).

The network doesn't seems to be the issue, as when I write "6:Efelin," to
the telnet session, kamailio executes the route
event_route[evapi:message-received]

Versions:

# dpkg -l | grep libev-dev
ii  libev-dev                      1:4.15-3                    amd64

# uname -a
Linux cgrates 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt25-2+deb8u3
(2016-07-02) x86_64 GNU/Linux

# kamailio -V
version: kamailio 4.4.2 (x86_64/linux) 384e90
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,
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
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: 384e90
compiled on 12:04:04 Aug 19 2016 with gcc 4.9.2

I wasn't able to find anything that might block the connection. Can anyone
point me to, how to debug this issue further?

Thanks for any advice.

Kind regards

Jan Muranyi
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