[sr-dev] [kamailio/kamailio] t_replicate transaction failures keeps transaction in memory forever (#1220)

[Daniel-Constantin Mierla]

I tried to reproduce using master, but all ok. Based on default kamailio.cfg, I have added t_replicate_tcp:

```
# Handle SIP registrations
route[REGISTRAR] {
	if (!is_method("REGISTER")) return;

	if(isflagset(FLT_NATS)) {
		setbflag(FLB_NATB);
#!ifdef WITH_NATSIPPING
		# do SIP NAT pinging
		setbflag(FLB_NATSIPPING);
#!endif
	}
	if (!save("location")) {
		sl_reply_error();
	}
	t_replicate_tcp("127.0.0.1", 9);
	exit;
}
```

In logs I get:

```
39(81014) ERROR: <core> [core/tcp_main.c:4135]: handle_tcpconn_ev(): connect 127.0.0.1:9 failed
```

and after a while (delete wait time) transaction is cleaned:

```
25(81000) DEBUG: tm [t_reply.c:1263]: t_should_relay_response(): ->>>>>>>>> T_code=0, new_code=408
25(81000) DEBUG: tm [t_reply.c:2072]: local_reply(): branch=0, save=0, winner=0
25(81000) DEBUG: tm [t_reply.c:2111]: local_reply(): local transaction completed 408/0 (totag retr: 0/0)
26(81001) DEBUG: tm [h_table.c:129]: free_cell_helper(): freeing transaction 0x105712170 from timer.c:651
```

`tm.stats` showing 0 current transactions.

What version are you using? What are the parameters you set for tm module?

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