Can't make tcp_conid_alive work with $var - sr-users

3 May 2021


      Hello guys,
I'm trying to do the following:
On INVITE, i add a param to RR "wsconnid" which is the connection id of the
WS socket.
Afterwards, i get an OPTIONS including said param.
Next I want to retrieve the param and check if the connection is alive.
NOTE: using simply "$(hdr(Route){param.value,wsconnid})" returns an extra
">" from the end of the string, and i haven't been able to remove that any
other way but with "striptail", it works fine.
***
    $var(conid) = $(hdr(Route){param.value,wsconnid});
    $var(conid) = $(var(conid){s.striptail,1});
    xlog("L_ERR", "Connection ID parameter: [$var(conid)]");
    if (tcp_conid_alive("$var(conid)")) {
        xlog("L_ERR", "WS Connection ID $var(conid) is alive");
    } else {
        xlog("L_ERR", "WS Connection ID $var(conid) is NOT alive");
    }
***
With that, "$var(conid)" contains the connection id properly:
***
ERROR: <script>: Connection ID parameter: [2]
***
but tcp_conid_alive complaints:
***
ERROR: <core> [core/sr_module.c:1638]: get_int_fparam(): Could not convert
PV to int
ERROR: tcpops [tcpops_mod.c:374]: w_tcp_conid_state(): invalid parameter
'conid' (must be a number)
***
Using a hardcoded number such as "1" generates no complaints.
Kamailio version:
version: kamailio 5.3.7 (x86_64/linux)
Not sure what's going on here, any ideas?
Regards,
David Villasmil
email: david.villasmil.work@gmail.com
phone: +34669448337