Hello,
not sure why you think that the ims_ipsec_pcscf module is listening only on UDP. It seems to be also listening on TCP:
//add listen interfaces for IPv4
if(add_listen_iface(addr4, NULL, ipsec_client_port + i, PROTO_TCP, 0) != 0) {
LM_ERR("Error adding listen ipsec client TCP interface for IPv4\n");
return -1;
}
if(add_listen_iface(addr4, NULL, ipsec_server_port + i, PROTO_TCP, 0) != 0) {
LM_ERR("Error adding listen ipsec server TCP interface for IPv4\n");
return -1;
}
if(add_listen_iface(addr4, NULL, ipsec_client_port + i, PROTO_UDP, 0) != 0) {
LM_ERR("Error adding listen ipsec client UDP interface for IPv4\n");
return -1;
}
if(add_listen_iface(addr4, NULL, ipsec_server_port + i, PROTO_UDP, 0) != 0) {
LM_ERR("Error adding listen ipsec server UDP interface for IPv4\n");
return -1;
}
Cheers,
Henning
From: sr-users <sr-users-bounces@lists.kamailio.org>
On Behalf Of H Yavari
Sent: Thursday, May 20, 2021 3:01 AM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: [SR-Users] IMS IPSec does use UDP socket?
Hi to all,
I am interested in the implementation of IPsec module. When I run Kamailio, it is creating processes based on the below formulate:
UDP children * IPSEC_MAX_CONN * interfaces (v4 and v6) + (TCP+UD) processes for each interface.
For example:
children = 16
tcp_children=16
IPSEC_MAX_CONN = 25
and two interface : IPv6 and V4
Kamailio process count = (16 * 25 * 2 ) + 16 + 16 = 832
But why IPsec module is listening to UDP not TCP? this is an internal connection?
Thank you.
Regards,
Hossein