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### Description
<!--
Explain what you did, what you expected to happen, and what actually happened.
-->
The dmq_usrloc module is not replicating the extra attributes saved in the xavp for the contact. So remote nodes don't receive these values, being unable to access it properly.
It is expected that the attributes are replicated as well.
#### Reproduction
<!--
If the issue can be reproduced, describe how it can be done.
-->
Setup two nodes using the dmq_usrloc and usrloc in db_mode=0.
When receiving a REGISTER, before saving the contact add some attribute in the xavp_contact. In a subsequent message to this contact (e.g.: INVITE) use a lookup() or registered() and try to access the desired xavp_contact attribute. If the request is received in the local node (which received the original REGISTER), the attribute will be valid, but if the request is received in the remote node, the attribute is empty.
#### Log Messages
<!--
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).
-->
```
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: registrar [save.c:410]: pack_ci(): generated ruid is: uloc-5cee2114-5abe-2
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: usrloc [ucontact.c:73]: ucontact_xavp_store(): trying to clone per contact xavps
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: <core> [core/xavp.c:697]: xavp_clone_level_nodata(): cloned root xavp [ulattrs]
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: <core> [core/xavp.c:721]: xavp_clone_level_nodata(): cloned inner xavp [cluster_node]
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: usrloc [ucontact.c:1701]: update_ucontact(): exists callback for type= UL_CONTACT_UPDATE
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: usrloc [ul_callback.h:84]: run_ul_callbacks(): contact=0x7f51b624d418, callback type 2/15, id 1 entered
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: dmq_usrloc [usrloc_sync.c:776]: dmq_ul_cb_contact(): Callback from usrloc with type=2
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: dmq_usrloc [usrloc_sync.c:427]: init_usrloc_dmq_recv(): Initializing usrloc_dmq_recv for pid (23230)
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: dmq_usrloc [usrloc_sync.c:785]: dmq_ul_cb_contact(): Replicating local update to other nodes...
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: dmq_usrloc [usrloc_sync.c:746]: usrloc_dmq_send_contact(): sending serialized data {"action":1,"aor":"345671002","ruid":"uloc-5cee20df-5953-1","c":"sip:345671002@172.28.128.200:5060;rinstance=38e53fed7e84e081;transport=UDP","received":"","path":"<sip:172.28.128.102:5060;received=sip:172.28.128.200:5060;lr>","callid":"NOeeFh1Bh5JR0eJG8DENkg..","user_agent":"Z 3.15.40006 rv2.8.20","instance":"","expires":1559110577,"cseq":12,"flags":0,"cflags":3072,"q":-1,"last_modified":1559109977,"methods":4294967295,"reg_id":0,"server_id":0}
May 29 16:06:18 kamailio-2 /usr/sbin/kamailio[23230]: DEBUG: dmq_usrloc [usrloc_sync.c:315]: usrloc_dmq_send(): sending dmq broadcast...
```
### Possible Solutions
<!--
If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
-->
Only workaround seems to use usrloc with db_mode=3 and then not use the dmq_usrloc, having the usrloc with attributes info shared via the DB....
### Additional Information
Kamailio 5.2.2 installed from the repo.
```
# kamailio -v
version: kamailio 5.2.2 (x86_64/linux) 67f967
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_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 67f967
compiled on 11:40:41 Mar 11 2019 with gcc 4.8.5
```
* **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`)
-->
```
# cat /etc/centos-release
CentOS Linux release 7.3.1611 (Core)
# uname -a
Linux kamailio-2 3.10.0-514.21.2.el7.x86_64 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
```
--
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Reply to this email directly or view it on GitHub:
https://github.com/kamailio/kamailio/issues/1968
### Description
We have various commercial UE's connecting over an Amarisoft Callbox Classic eNB with Open5GS core network. This issue concerns different UE behaviour.
Name checking code introduced between Kamailio v5.6.4 and v5.7.1 (udomain.c lines 580 to 599) leads to rejection of the SUBSCRIBE request from a Huawei UE (user-agent: IM-client/OMA1.0 HW-Rto/V1.0). SUBSCRIBE requests from a OnePlus UE (user-agent: OnePlus_KB2003_RPIA.201005.001) are accepted.
We assume that the behaviour of the commercial-off-the-shelf UE's complies with the 3GPP standards; but we do not know to what extent. The following code, however, caused our Huawei UE's to lose VoLTE capability, after updating the Kamailio IMS from v5.6.4 to v5.7.1.
```
580 if ((contact_info->aor.len>0) && (needle_uri.user.len != 0)){
581 if ((needle_uri.user.len != c->contact_user.len) ||
582 (memcmp(needle_uri.user.s, c->contact_user.s, needle_uri.user.len) != 0)) {
583 LM_ERR("user name does not match - no match here...\n");
584 LM_DBG("found pcontact username [%d]: [%.*s]\n", i, c->contact_user.len, c->contact_user.s);
585 LM_DBG("incoming contact username: [%.*s]\n", needle_uri.user.len, needle_uri.user.s);
586 c = c->next;
587 continue;
588 }
589 if ((contact_info->aor.len >= 4) && (memcmp(contact_info->aor.s, c->aor.s, 4) != 0)) { // do not mix up sip- and tel-URIs.
590 LM_ERR("scheme does not match - no match here...\n");
591 LM_DBG("found pcontact scheme [%d]: [%.*s]\n", i, 4, c->aor.s);
592 LM_DBG("incoming contact scheme: [%.*s]\n", 4, contact_info->aor.s);
593 c = c->next;
594 continue;
595 }
596 }
597 else{
598 LM_DBG("No user name present - abort user name check\n");
599 }
```
The above code also does not consider the reverse_search flag (uses c=c->next instead of c = reverse_search? c->prev : c->next), so if reverse_search is set, the code's behaviour may be incorrect.
In the following pcap file, the Huawei's SIP REGISTER process starts at packet 2, 200 OK arriving in packet 41, with the P-Associated-URI <sip:51194@ims.mnc001.mcc001.3gppnetwork.org>. This UE sends SUBSCRIBE (packet 47) incorporating a new Contact: <sip:51194@10.46.0.6:31896>, presumably derived from the P-Associated-URI; but receives "403 Forbidden - You must register first with a S-CSCF".
The Oneplus sends SIP REGISTER at packet 56, receiving 200 OK at packet 83 with P-Associated-URI <sip:51196@ims.mnc001.mcc001.3gppnetwork.org>. But this UE's SUBSCRIBE (packet 84) incorporates the same Contact used in the REGISTER request: <sip:c57d4262-e59d-4530-a0f4-b4faaa2fb1c6@10.46.0.8:5060>, and 200 OK arrives at packet 92.
[v571-pcscf-name-check-fail.zip](https://github.com/kamailio/kamailio/files/…
#### Debugging Data
None acquired
#### Log Messages
<!--
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).
-->
NB: log messages acquired prior to above pcap. The following extract shows failed name check (udomain.c lines 580 - 599) for username 51194, while 001010000051194 was registered:
```
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_registrar_pcscf [service_routes.c:210]: getContactP(): This is a request - using first via to find contact
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_registrar_pcscf [service_routes.c:218]: getContactP(): searching for contact with host:port:proto contact [1://10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:459]: get_pcontact_from_cache(): Searching for contact with AOR [sip:51194@10.46.0.6:31894] in P-CSCF usrloc based on VIA [1://10.46.0.6:31894] Received [1://10.46.0.6:31409], Search flag is 0, reverse_search 0
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:469]: get_pcontact_from_cache(): Have an AOR to search for
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:474]: get_pcontact_from_cache(): checking for rinstance
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [usrloc.c:157]: get_aor_hash(): Returning hash: [1746035570]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:509]: get_pcontact_from_cache(): get_pcontact slot is [370]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:513]: get_pcontact_from_cache(): comparing contact with aorhash [1746035570], aor [sip:001010000051194@10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:514]: get_pcontact_from_cache(): contact host [10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:515]: get_pcontact_from_cache(): contact received [2:10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:522]: get_pcontact_from_cache(): mached a record by aorhash: 1746035570
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:513]: get_pcontact_from_cache(): comparing contact with aorhash [1746035570], aor [sip:001010000051194@10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:514]: get_pcontact_from_cache(): contact host [10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:515]: get_pcontact_from_cache(): contact received [2:10.46.0.6:31409]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:522]: get_pcontact_from_cache(): mached a record by aorhash: 1746035570
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:541]: get_pcontact_from_cache(): matched contact ip address and port
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:569]: get_pcontact_from_cache(): found contact with URI [sip:001010000051194@10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: ERROR: ims_usrloc_pcscf [udomain.c:583]: get_pcontact_from_cache(): user name does not match - no match here...
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:584]: get_pcontact_from_cache(): found pcontact username [1]: [001010000051194]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:585]: get_pcontact_from_cache(): incoming contact username: [51194]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:643]: get_pcontact_from_cache(): contact not found in memory
Jul 18 12:15:31 corsa03 p-cscf[58090]: INFO: ims_registrar_pcscf [service_routes.c:277]: getContactP(): Contact not found based on Contact-header, trying IP/Port/Proto
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:459]: get_pcontact_from_cache(): Searching for contact with AOR [sip:51194@10.46.0.6:31894] in P-CSCF usrloc based on VIA [1://10.46.0.6:31894] Received [1://10.46.0.6:31409], Search flag is 1, reverse_search 0
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:469]: get_pcontact_from_cache(): Have an AOR to search for
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:474]: get_pcontact_from_cache(): checking for rinstance
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [usrloc.c:157]: get_aor_hash(): Returning hash: [1746035570]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:509]: get_pcontact_from_cache(): get_pcontact slot is [370]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:513]: get_pcontact_from_cache(): comparing contact with aorhash [1746035570], aor [sip:001010000051194@10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:514]: get_pcontact_from_cache(): contact host [10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:515]: get_pcontact_from_cache(): contact received [2:10.46.0.6:5060]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:522]: get_pcontact_from_cache(): mached a record by aorhash: 1746035570
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:546]: get_pcontact_from_cache(): continuing to match on received details
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:513]: get_pcontact_from_cache(): comparing contact with aorhash [1746035570], aor [sip:001010000051194@10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:514]: get_pcontact_from_cache(): contact host [10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:515]: get_pcontact_from_cache(): contact received [2:10.46.0.6:31409]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:522]: get_pcontact_from_cache(): mached a record by aorhash: 1746035570
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:546]: get_pcontact_from_cache(): continuing to match on received details
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:569]: get_pcontact_from_cache(): found contact with URI [sip:001010000051194@10.46.0.6:31894]
Jul 18 12:15:31 corsa03 p-cscf[58090]: ERROR: ims_usrloc_pcscf [udomain.c:583]: get_pcontact_from_cache(): user name does not match - no match here...
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:584]: get_pcontact_from_cache(): found pcontact username [1]: [001010000051194]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:585]: get_pcontact_from_cache(): incoming contact username: [51194]
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_usrloc_pcscf [udomain.c:643]: get_pcontact_from_cache(): contact not found in memory
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_registrar_pcscf [service_routes.c:282]: getContactP(): No entry in usrloc for 10.46.0.6:31409 (Proto 1) found!
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: ims_registrar_pcscf [service_routes.c:319]: getContactP(): Asserted identity not set
Jul 18 12:15:31 corsa03 p-cscf[58090]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[MO] c=[/etc/kamailio/pcscf/route/mo.cfg] l=16 a=26 n=send_reply
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: sl [sl.c:310]: send_reply(): reply in stateless mode (sl)
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: <core> [core/receive.c:126]: sip_check_fline(): first line indicates a SIP reply
Jul 18 12:15:31 corsa03 p-cscf[58090]: ERROR: *** cfgtrace:dbg_cfg_trace(): request_route=[MO] c=[/etc/kamailio/pcscf/route/mo.cfg] l=17 a=2 n=exit
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: <core> [core/receive.c:528]: receive_msg(): request-route executed in: 4219 usec
Jul 18 12:15:31 corsa03 p-cscf[58090]: DEBUG: <core> [core/usr_avp.c:637]: destroy_avp_list(): destroying list 0x7f043587bfc0
```
### Possible Solutions
Commenting out udomain.c lines 580-599 allowed both UE's to complete their SUBSCRIBE's, and make VoLTE calls. In the following pcap, the Oneplus REGISTER's and SUBSCRIBE's over packets 1 to 37; the Huawei process occurs from packets 45 to 98.
[v571-pcscf-name-check-skipped.zip](https://github.com/kamailio/kamailio/fil…
### Additional Information
```
version: kamailio 5.7.1 (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, MEM_JOIN_FREE, 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
```
* **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 `lsb_release -a` and `uname -a`)
-->
```
Linux corsa03 6.5.?-gentoo-x86_64 #2 SMP PREEMPT_DYNAMIC <not recorded> CEST 2023 x86_64 AMD EPYC 7513 32-Core Processor AuthenticAMD GNU/Linux
```
--
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<!-- Kamailio Pull Request Template -->
<!--
IMPORTANT:
- for detailed contributing guidelines, read:
https://github.com/kamailio/kamailio/blob/master/.github/CONTRIBUTING.md
- pull requests must be done to master branch, unless they are backports
of fixes from master branch to a stable branch
- backports to stable branches must be done with 'git cherry-pick -x ...'
- code is contributed under BSD for core and main components (tm, sl, auth, tls)
- code is contributed GPLv2 or a compatible license for the other components
- GPL code is contributed with OpenSSL licensing exception
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#### Pre-Submission Checklist
<!-- Go over all points below, and after creating the PR, tick all the checkboxes that apply -->
<!-- All points should be verified, otherwise, read the CONTRIBUTING guidelines from above-->
<!-- If you're unsure about any of these, don't hesitate to ask on sr-dev mailing list -->
- [x] Commit message has the format required by CONTRIBUTING guide
- [x] Commits are split per component (core, individual modules, libs, utils, ...)
- [x] Each component has a single commit (if not, squash them into one commit)
- [x] No commits to README files for modules (changes must be done to docbook files
in `doc/` subfolder, the README file is autogenerated)
#### Type Of Change
- [x] Small bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds new functionality)
- [ ] Breaking change (fix or feature that would change existing functionality)
#### Checklist:
<!-- Go over all points below, and after creating the PR, tick the checkboxes that apply -->
- [ ] PR should be backported to stable branches
- [x] Tested changes locally
- [ ] Related to issue #XXXX (replace XXXX with an open issue number)
#### Description
<!-- Describe your changes in detail -->
This PR fixes the issue in https://github.com/kamailio/kamailio/issues/1968.
Any feedback is welcome.
You can view, comment on, or merge this pull request online at:
https://github.com/kamailio/kamailio/pull/3679
-- Commit Summary --
* dmq_usrloc: Transfer attributes
* usrloc: Modify destroy order and contact xavp
-- File Changes --
M src/modules/dmq_usrloc/usrloc_sync.c (132)
M src/modules/usrloc/ucontact.c (9)
-- Patch Links --
https://github.com/kamailio/kamailio/pull/3679.patchhttps://github.com/kamailio/kamailio/pull/3679.diff
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### Description
This is an umbrella ticket to address issues with the WIP `tls_wolfssl` module
### Expected behavior
The module behaves robustly under load testing and various configurations
and thus can be accepted long-term in kamailio
--
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Compile tls_wolfssl error:
checking dependency style of gcc... gcc3
checking whether make supports nested variables... (cached) yes
./configure: line 6164: syntax error near unexpected token `2.4.2'
./configure: line 6164: `LT_PREREQ(2.4.2)'
make[2]: *** [Makefile:21: ../../../misc/external/wolfssl/build/include/wolfssl/options.h] Error 2
make[1]: *** [Makefile:508: modules] Error 1
make[1]: Leaving directory '/usr/local/src/kamailio-5.7/src'
make: *** [Makefile:34: all] Error 2
Please check, thanks
--
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### Description
When using the PATH header option to keep track of original Kamailio node that received the REGISTER, if nathelper is also used with SIP ping enabled, the SIP OPTIONS is sent to itself following the PATH header and not sent directly to the destination.
The nathelper/user location modules should have a flag similar to the "path_check_local" of the registrar module, which is meant to avoid looping the message to itself in case the next hop pointed by the PATH header is "myself".
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### Troubleshooting
#### Reproduction
Configure the registrar module to support PATH and before saving the contact info add the PATH header with the local Kamailio information. Also make sure to have the nathelper and usrloc modules configured to send the keepalive SIP OPTIONS to the registered extensions.
By the time the SIP OPTIONS is sent, Kamailio sends to itself, then the message has to be loose_route'd to the final destination.
This could be avoided by having the nathelper module to identify the next hop is Kamailio itself skipping this destination as a call to "lookup()" does for the registrar module when the flag path_check_local is true.
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#### SIP Traffic
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If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site).
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172.128.128.10 is the Kamailio IP and 172.128.128.20 is the extension IP
```
11:51:07.224713 IP (tos 0x60, ttl 64, id 64497, offset 0, flags [none], proto UDP (17), length 518)
172.128.128.10.5060 > 172.128.128.10.5060: SIP, length: 490
OPTIONS sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 172.128.128.10:5060;branch=z9hG4bK2540713
Route: <sip:172.128.128.10:5060;received=sip:172.128.128.20:5060;lr;cluster_node=192.168.156.10:5060>
From: sip:sbc@mydomain.com;tag=uloc-5d2e6499-2fb5-1-0-c15309d2
To: sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP
Call-ID: 40ee1573-7506bba3-5e30c05(a)172.128.128.10
CSeq: 1 OPTIONS
Content-Length: 0
11:51:07.226132 IP (tos 0x60, ttl 64, id 44359, offset 0, flags [none], proto UDP (17), length 502)
172.128.128.10.5060 > 172.128.128.20.5060: SIP, length: 474
OPTIONS sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 172.128.128.10;branch=z9hG4bKb958.b807e80b742db62504a45220d8f0e974.0
Via: SIP/2.0/UDP 172.128.128.10:5060;branch=z9hG4bK2540713
From: sip:sbc@mydomain.com;tag=uloc-5d2e6499-2fb5-1-0-c15309d2
To: sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP
Call-ID: 40ee1573-7506bba3-5e30c05(a)172.128.128.10
CSeq: 1 OPTIONS
Content-Length: 0
11:51:07.303474 IP (tos 0x0, ttl 128, id 10816, offset 0, flags [none], proto UDP (17), length 786)
172.128.128.20.5060 > 172.128.128.10.5060: SIP, length: 758
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.128.128.10;branch=z9hG4bKb958.b807e80b742db62504a45220d8f0e974.0
Via: SIP/2.0/UDP 172.128.128.10:5060;branch=z9hG4bK2540713
Contact: <sip:172.128.128.20:5060>
To: <sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP>;tag=bb0c1f2d
From: sip:sbc@mydomain.com;tag=uloc-5d2e6499-2fb5-1-0-c15309d2
Call-ID: 40ee1573-7506bba3-5e30c05(a)172.128.128.10
CSeq: 1 OPTIONS
Accept: application/sdp, application/sdp
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri
User-Agent: Z 3.15.40006 rv2.8.20
Allow-Events: presence, kpml, talk
Content-Length: 0
11:51:07.306821 IP (tos 0x60, ttl 64, id 64570, offset 0, flags [none], proto UDP (17), length 727)
172.128.128.10.5060 > 172.128.128.10.5060: SIP, length: 699
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.128.128.10:5060;branch=z9hG4bK2540713
Contact: <sip:172.128.128.20:5060;alias=172.128.128.20~5060~1>
To: <sip:345671002@172.128.128.20:5060;rinstance=d1eb3444a5cec5a1;transport=UDP>;tag=bb0c1f2d
From: sip:sbc@mydomain.com;tag=uloc-5d2e6499-2fb5-1-0-c15309d2
Call-ID: 40ee1573-7506bba3-5e30c05(a)172.128.128.10
CSeq: 1 OPTIONS
Accept: application/sdp, application/sdp
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri
User-Agent: Z 3.15.40006 rv2.8.20
Allow-Events: presence, kpml, talk
Content-Length: 0
```
### Possible Solutions
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If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
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Not found.
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
# kamailio -v
version: kamailio 5.2.2 (x86_64/linux) 67f967
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_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 67f967
compiled on 11:40:41 Mar 11 2019 with gcc 4.8.5
```
* **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`)
-->
```
# uname -a
Linux kamailio-1 3.10.0-514.21.2.el7.x86_64 #1 SMP Tue Jun 20 12:24:47 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
```
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### Description
when i make websocket module:
ws_frame.c:32:20: fatal error: unistr.h: No such file or directory
#include <unistr.h>
^
compilation terminated.
make: *** [ws_frame.o] Error 1
OS:
centos7
and i try reinstall libunistring,Still failed
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