[sr-dev] [kamailio/kamailio] Missing lwsc.so (#2749)

[Váradi Richárd]

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### Description

I wanted to use the rtpengine module wiith websockets, so I installed the kamailio-lwsc-modules debian package. The problem is when I want to load the lwsc module it fails, because there is no lwsc.so file in /usr/lib/x86_64-linux-gnu/kamailio/modules/.

I installed the libwebsockets-dev library, reinstalled the lwsc module, but I experience the same issue.
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Explain what you did, what you expected to happen, and what actually happened.
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### Troubleshooting

#### Reproduction

I installed kamailio on Ubuntu 20.04 and simply tried to load lwsc.so with this line `loadmodule "lwsc.so"`
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If the issue can be reproduced, describe how it can be done.
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#### Log Messages

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Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
-->

```
Starting Kamailio - the Open Source SIP Server...
May 27 11:23:06 kamailio kamailio[3387]: ERROR: <core> [core/sr_module.c:504]: ksr_locate_module(): could not find module <lwsc> in </usr/lib/x86_64-linux-gnu/kamailio/modules>
May 27 11:23:06 kamailio kamailio[3387]: CRITICAL: <core> [core/cfg.y:3683]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 308, column 12-20: failed to load module
May 27 11:23:06 kamailio kamailio[3387]: ERROR: <core> [core/modparam.c:178]: set_mod_param_regex(): No module matching <lwsc> found
May 27 11:23:06 kamailio kamailio[3387]: CRITICAL: <core> [core/cfg.y:3686]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 460, column 35: Can't set module parameter
May 27 11:23:06 kamailio kamailio[3387]: ERROR: bad config file (2 errors) (parsing code: 0)
May 27 11:23:06 kamailio kamailio[3387]: INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized
May 27 11:23:06 kamailio systemd[1]: kamailio.service: Control process exited, code=exited, status=255/EXCEPTION
May 27 11:23:06 kamailio systemd[1]: kamailio.service: Failed with result 'exit-code'.
May 27 11:23:06 kamailio systemd[1]: Failed to start Kamailio - the Open Source SIP Server.
May 27 11:23:06 kamailio systemd[1]: kamailio.service: Scheduled restart job, restart counter is at 5.
May 27 11:23:06 kamailio systemd[1]: Stopped Kamailio - the Open Source SIP Server.
May 27 11:23:06 kamailio systemd[1]: kamailio.service: Start request repeated too quickly.
May 27 11:23:06 kamailio systemd[1]: kamailio.service: Failed with result 'exit-code'.
May 27 11:23:06 kamailio systemd[1]: Failed to start Kamailio - the Open Source SIP Server.
```

### Additional Information

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

```
version: kamailio 5.5.0 (x86_64/linux)
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, 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_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, 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 9.3.0
```

* **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`)
-->
Ubuntu 20.04
```
Linux kamailio 5.4.0-73-generic #82-Ubuntu SMP Wed Apr 14 17:39:42 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
```

[Victor Seva]

confirmed, the package doesn't have the file

```
kamailio-lwsc-modules_5.5.0+ubuntu20.04_amd64.deb
-------------------------------------------------
new debian package, version 2.0.
size 99368 bytes: control archive=784 bytes.
649 bytes, 18 lines control
253 bytes, 3 lines md5sums
Package: kamailio-lwsc-modules
Source: kamailio
Version: 5.5.0+ubuntu20.04
Architecture: amd64
Maintainer: Debian VoIP Team <pkg-voip-***@lists.alioth.debian.org>
Installed-Size: 114
Depends: kamailio (= 5.5.0+ubuntu20.04)
Section: net
Priority: optional
Multi-Arch: same
Homepage: http://www.kamailio.org/
Description: Libwebsockets module for the Kamailio SIP server
Kamailio is a very fast and flexible SIP (RFC3261)
server. Written entirely in C, Kamailio can handle thousands calls
per second even on low-budget hardware.
.
This package contains the lwcs module, which provides a client-side WebSockets
API through libwebsockets.
drwxr-xr-x root/root 0 2021-05-05 15:07 ./
drwxr-xr-x root/root 0 2021-05-05 15:07 ./usr/
drwxr-xr-x root/root 0 2021-05-05 15:07 ./usr/share/
drwxr-xr-x root/root 0 2021-05-05 15:07 ./usr/share/doc/
drwxr-xr-x root/root 0 2021-05-05 15:07 ./usr/share/doc/kamailio-lwsc-modules/
-rw-r--r-- root/root 234 2021-05-05 15:07 ./usr/share/doc/kamailio-lwsc-modules/changelog.Debian.gz
-rw-r--r-- root/root 92317 2021-05-05 15:07 ./usr/share/doc/kamailio-lwsc-modules/changelog.gz
-rw-r--r-- root/root 16206 2021-05-05 15:07 ./usr/share/doc/kamailio-lwsc-modules/copyright
```

[Victor Seva]

Closed #2749 via f49d97fc92d3dbfa11c11ca453b9639aa7f81221.

[Victor Seva]

@VidarHUN you will need to use [kamailio55-nightly](http://deb.kamailio.org/#dev55) repository until 5.5.1 is released.
Package will be created this night if nothing happens.

Thanks

[Váradi Richárd]

I updated my source list, but nothing changed after reinstall:
```
new Debian package, version 2.0.
size 99384 bytes: control archive=792 bytes.
685 bytes, 18 lines control
253 bytes, 3 lines md5sums
Package: kamailio-lwsc-modules
Source: kamailio
Version: 5.5.1~ubuntu20.04.20210527023337.10
Architecture: amd64
Maintainer: Debian VoIP Team <pkg-voip-***@lists.alioth.debian.org>
Installed-Size: 114
Depends: kamailio (= 5.5.1~ubuntu20.04.20210527023337.10)
Section: net
Priority: optional
Multi-Arch: same
Homepage: http://www.kamailio.org/
Description: Libwebsockets module for the Kamailio SIP server
Kamailio is a very fast and flexible SIP (RFC3261)
server. Written entirely in C, Kamailio can handle thousands calls
per second even on low-budget hardware.
.
This package contains the lwcs module, which provides a client-side WebSockets
API through libwebsockets.
```
```
drwxr-xr-x root/root 0 2021-05-27 02:33 ./
drwxr-xr-x root/root 0 2021-05-27 02:33 ./usr/
drwxr-xr-x root/root 0 2021-05-27 02:33 ./usr/share/
drwxr-xr-x root/root 0 2021-05-27 02:33 ./usr/share/doc/
drwxr-xr-x root/root 0 2021-05-27 02:33 ./usr/share/doc/kamailio-lwsc-modules/
-rw-r--r-- root/root 237 2021-05-27 02:33 ./usr/share/doc/kamailio-lwsc-modules/changelog.Debian.gz
-rw-r--r-- root/root 92317 2021-05-06 02:33 ./usr/share/doc/kamailio-lwsc-modules/changelog.gz
-rw-r--r-- root/root 16206 2021-04-27 14:07 ./usr/share/doc/kamailio-lwsc-modules/copyright
```

I only reinstalled the kamilio-lwsc-modules package and not the whole kamailio.

[Henning Westerholt]

You need to wait until tomorrow

[Váradi Richárd]

Alright