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### Description we are using rtpengine with kamailio [KSR-LUA]. kamailio sending the rtpengine_offer to rtpengine. If kamailio didn't get the response from the rtpengine then it's not retrying . for rtpengine_answer and rtpengine_delete retry is working pretty good.

we are using following rtpengine configuration # ----- rtpengine params ----- modparam("rtpengine", "db_url", DBURL) modparam("rtpengine", "table_name" , "rtpengine") modparam("rtpengine", "rtpengine_allow_op", 1) modparam("rtpengine", "queried_nodes_limit", 4) modparam("rtpengine", "rtpengine_retr", 2) modparam("rtpengine", "rtp_inst_pvar", "$avp(RTP_INSTANCE)") modparam("rtpengine", "setid_default", 1) modparam("rtpengine", "rtpengine_tout_ms", 400) <!-- Explain what you did, what you expected to happen, and what actually happened. -->

### Troubleshooting

#### Reproduction

This issue can be reproduced by above configuration. and need to use rtpengine_offer,rtpengine_answer and rtpengine_delete with ksr lua routing. <!-- If the issue can be reproduced, describe how it can be done. -->

#### Debugging Data

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gdb /path/to/kamailio /path/to/corefile bt full info locals list

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``` (paste your debugging data here) ```

#### Log Messages

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#### SIP Traffic

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``` (paste your sip traffic here) ```

### Possible Solutions

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### Additional Information

* **Kamailio Version** - output of `kamailio -v`

``` version: kamailio 5.1.4 (x86_64/linux) a1df59 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: a1df59 compiled on 06:23:23 Oct 30 2018 with gcc 4.8.4 ```

* **Operating System**:

<!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) -->

``` root@ip-172-31-4-160:~# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty

root@ip-172-31-4-160:~# uname -a Linux ip-172-31-4-160 3.13.0-143-generic #192-Ubuntu SMP Tue Feb 27 10:45:36 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux ```