From 7fa3249d5407159a261d4f97e6056bbc1f26a48e Mon Sep 17 00:00:00 2001
From: arberkatellari <arberkatellari@live.com>
Date: Tue, 2 Jul 2024 14:25:29 +0200
Subject: [PATCH] Add Kamailio agent session restoration support

---
 agents/kamagent.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/agents/kamagent.go b/agents/kamagent.go
index cbc663760..83479ad4a 100644
--- a/agents/kamagent.go
+++ b/agents/kamagent.go
@@ -81,6 +81,11 @@ func (self *KamailioAgent) Connect() (err error) {
 		kamProcessMessageRegex: {self.onCgrProcessMessage},
 		kamProcessCDRRegex:     {self.onCgrProcessCDR},
 	}
+	var reply string
+	// make a call kamailio_agent -> sessions_conns to create an active client needed for syncSessions when restoring sessions, since prior clients are lost when engine shuts down
+	if err := self.connMgr.Call(self.ctx, self.cfg.SessionSConns, utils.SessionSv1Ping, &utils.CGREvent{}, &reply); err != nil {
+		return err
+	}
 	errChan := make(chan error)
 	for connIdx, connCfg := range self.cfg.EvapiConns {
 		if self.conns[connIdx], err = kamevapi.NewKamEvapi(connCfg.Address, connIdx, connCfg.Reconnects, connCfg.MaxReconnectInterval,