### Description
I'm having crashes on the Http worker process. I didn't find a way to reproduce the crash yet. Crashes are happening on two servers after a couple of days.
#### Debugging Data
Not very useful
``` Core was generated by `/usr/sbin/kamailio -f /etc/kamailio/kamailio.cfg -P /var/run/kamailio/kamailio.'. Program terminated with signal SIGSEGV, Segmentation fault. #0 __GI__IO_wfile_underflow (fp=0x7f45900008c0) at wfileops.c:280 280 wfileops.c: No such file or directory. (gdb) bt #0 __GI__IO_wfile_underflow (fp=0x7f45900008c0) at wfileops.c:280 #1 0x00000000000004b0 in ?? () #2 0x0000000000000428 in ?? () #3 0x00007f459d9e2640 in ?? () #4 0x0000000000000000 in ?? () (gdb) ```
#### Log Messages I have debug enabled for http_async_client module, and this is the last messages before the crash ``` Jan 3 11:02:11 vox-kamailio-1887-0 kamailio[2685]: DEBUG: http_async_client [http_multi.c:67]: timer_cb(): timeout on socket -1 Jan 3 11:02:11 vox-kamailio-1887-0 kamailio[2685]: DEBUG: http_async_client [http_multi.c:53]: multi_timer_cb(): multi_timer_cb: Setting timeout to 1 ms Jan 3 11:02:11 vox-kamailio-1887-0 kamailio[2685]: DEBUG: http_async_client [http_multi.c:561]: check_multi_info(): REMAINING: 2 [...] Jan 3 11:02:15 vox-kamailio-1887-0 kamailio[2702]: CRITICAL: <core> [core/pass_fd.c:277]: receive_fd(): EOF on 89 Jan 3 11:02:15 vox-kamailio-1887-0 kamailio[2618]: ALERT: <core> [main.c:743]: handle_sigs(): child process 2685 exited by a signal 11 Jan 3 11:02:15 vox-kamailio-1887-0 kamailio[2618]: ALERT: <core> [main.c:746]: handle_sigs(): core was generated ```
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
``` version: kamailio 5.0.5 (x86_64/linux) flags: STATS: Off, USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, 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: unknown compiled with gcc 4.8.2 ```
This is 5.0.5 + https://github.com/kamailio/kamailio/pull/1386/commits/388ba3642338992a04ca1...
Module parameters are: ``` modparam("http_async_client", "connection_timeout", 10000) modparam("http_async_client", "tls_verify_host", 0) modparam("http_async_client", "tls_verify_peer", 0) modparam("http_async_client", "hash_size", 1024) ```
The use of the module is like this: ``` $var(url) = $avp(s:deviceStateURL)+"ari/deviceStates/Custom:" + $avp(s:queueDevice); $http_req(timeout) = 100; $http_req(suspend) = 0; $http_req(authmethod) = 1; $http_req(username) = $sht(lcr=>ari_user); $http_req(password) = $sht(lcr=>ari_pass); http_async_query("$var(url)", "QUEUE_CHECK_STATUS_OR_SET"); ```
* **Operating System**:
Ubuntu Trusty