The connection registered by the client is normal, and the client can send
messages and renew the registration normally, but the push message to the
client using uac_req_send() from kamailio fails.
Location information after the client is registered:
]#kamcmd ul.lookup location test01
Received: sip:10.11.40.XX:57646;transport=tls
]#netstat -anp | grep 57646
"tcp 0 0 10.11.55.xx:5061 10.11.40.XX:57646 ESTABLISHED 3467/kamailio"
kamailio.lua
KSR.pv.sets("$uac_req(ouri)", rows.received)
In this way, most users can receive messages normally, but occasionally some
users cannot receive messages but can renew their registration and send
messages normally. Once this is the case for this user, the use of
uac_req_send() will continue to fail until the client establishes a new
connection.
If a problem occurs, the following logs are displayed on the server:
2024-02-20T10:01:25.329595+08:00 10.11.55.XX (72819) ERROR: <core>
[core/tcp_main.c:4692]: tcpconn_main_timeout(): connect 10.11.40.XX:57646
failed (timeout)
The connection already exists and should be normal, why does
"tcpconn_main_timeout(): connect 10.11.40.XX:57646 failed (timeout)" occur.
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