### Description
if multiple sip websocket clients are subscribed to some UA and one of the watchers suddenly disappears (e.g. the web page is reloaded), then no NOTIFY is ever sent after issuing a `pres_refresh_watchers()`.
The following error is logged:
```
WARNING: <core> [core/msg_translator.c:3007]: via_builder(): TCP/TLS connection (id: 0) for WebSocket could not be found
ERROR: tm [t_msgbuilder.c:1423]: assemble_via(): via building failed
ERROR: tm [t_msgbuilder.c:1614]: build_uac_req(): error while assembling Via
ERROR: tm [uac.c:552]: t_uac_prepare(): Error while building message
ERROR: presence [notify.c:1734]: send_notify_request(): in function tm t_request_within()
ERROR: presence [notify.c:1829]: notify(): sending Notify not successful
ERROR: presence [notify.c:1585]: query_db_notify(): Could not send notify for [event]=dialog
ERROR: presence [presence.c:739]: pres_refresh_watchers(): sending Notify requests
```
### Troubleshooting
when the client disconnects, the old watcher is not removed from the active_watchers table, instead it coexists with the new one, but the stale connection causes the error above when sending the notify, and then all of the following watchers (even the valid ones) are skipped too.
Looking at the logs, the valid watchers are not notified because the while loop [here](https://github.com/kamailio/kamailio/blob/b96bc11a54f11ec688429c057bf… is skipped because of the `goto done` line in case of errors, which happens because it fails to build the via header for the message relevant to the stale websocket connection.
By breaking out of the while loop, the remaining subs in the `subs_array` are skipped.
#### Reproduction
Just subscribe to a sip client using a websocket-based phone, then abruptly disconnect it (e.g. by reloading the web page) and then issue a `pres_refresh_watchers()` to make it generate a notify.
#### Debugging Data
#### Log Messages
#### SIP Traffic
### Possible Solutions
I tried to use the "websocket:closed" route to purge stale connections, but to my knowledge there are no APIs to clean invalid watchers.
A possible solution could be to automatically remove the watchers on disconnection and maybe skip the invalid ones without exiting from the refresh loop
### Additional Information
kamailio 5.8.2
* **Operating System**:
Rocky Linux 9
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### Description
Hi!
We are in the progress of upgrading from Kamailio 5.5 to 5.8. During our testing we have noticed a new error being reported from Kamailio. We don’t see any other errors following it.
```jsx
/usr/sbin/kamailio[201]: CRITICAL: <core> [core/tcp_main.c:5544]: tcp_timer_check_connections(): message processing timeout on connection id: 67896 (state: 3) - closing
```
It does seem to be [new code](https://github.com/kamailio/kamailio/blob/master/src/core/tcp_main.c#… in Kamailio reporting this issue.
Given that this is a fairly expected thing, cleaning up a connection which receives no traffic within the given time, is there a need for it to be reported on CRITICAL?
I’d also expect it to be caught by
```
event_route[tcp:timeout] {
xlog("L_INFO","connection $conid timeouts (unanswered keepalives)");
}
```
given that [the description](https://www.kamailio.org/docs/modules/stable/modules/tcpops.ht… of this one is `Called for connection timeouts (unanswered keepalives).`.
### Troubleshooting
We don't have any way to reproduce it, we are still investigating it to figure out the cause. It happens around every 2 hours, so we think there might some some scheduled test or job running in our test system causing this.
### Additional Information
* **Kamailio Version** - 5.8.3
* **Operating System**: Debian 12 AMI from the AWS Marketplace.
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Documentation https://www.kamailio.org/docs/modules/devel/modules/tm.html#tm.p.fr_timer says:
>Timer which hits if no **final reply** for a request or ACK for a negative INVITE reply arrives (in milliseconds).
Looks like it is not correct description - fr_timer value works until 1xx(not **final**) response received and then timer restarted with fr_inv_timer value there:
https://github.com/kamailio/kamailio/blob/master/src/modules/tm/t_reply.c#L…
Looks like old doc from sip router https://sip-router.org/wiki/ref_manual/timers explains it correctly:
> fr_timer
This timer is used for all SIP requests. It hits if no reply for an INVITE request or other request has been received (F in milliseconds). If a provisional reply is received for an INVITE (any 1xx), then the fr_inv_timer will be used instead. And if no replies (at all) for an INVITE are received before `fr_timer` hits, the transaction is terminated with a 408 in failure route.
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space88man created an issue (kamailio/kamailio#4216)
### Description
Use cfgengine python and KSR.cfgutils.unlock
### Troubleshooting
#### Reproduction
In cfgengine python call
```
KSR.cfgutils.lock("something")
# do some work
KSR.cfgutils.unlock("something")
```
#### Debugging Data
n/a
#### Log Messages
```ERROR: app_python3 [apy_kemi.c:278]: sr_apy_kemi_exec_func_ex(): invalid number of parameters - idx: 1 argc: 1
```
### Possible Solutions
<!--
If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix.
-->
### Additional Information
* **Kamailio Version** - output of `kamailio -v`
```
version: kamailio 6.0.1 (x86_64/linux) fce50d
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_SEND_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: fce50d
compiled on 17:27:30 Mar 29 2025 with gcc 8.5.0
```
* **Operating System**:
```
AlmaLinux 9.5 x86_64
```
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ChristianBergerSipgate created an issue (kamailio/kamailio#4168)
We think we have found a potential bug in the path module.
When we call `add_path_received()` we get the following for WSS connections:
`Path: <sip:217.10.77.242;lr;received=sip:217.10.69.93:42612%3Btransport%3Dws>`
We think there should be a `transport%3Dwss` appended instead of ws.
We have looked a bit into the code and think that this is caused by the following definition:
```
in modules/path/path.c
const static char *proto_strings[] = {
[PROTO_TCP] = "%3Btransport%3Dtcp",
[PROTO_TLS] = "%3Btransport%3Dtls",
[PROTO_SCTP] = "%3Btransport%3Dsctp",
[PROTO_WS] = "%3Btransport%3Dws",
[PROTO_WSS] = "%3Btransport%3Dws",
};
```
We think that on the last line, it should read
` [PROTO_WSS] = "%3Btransport%3Dwss",`
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