SS/USSD: make NCSS session timeout configurable

It may happen that either the MS or an ESME would become
unresponsive, e.g. due to a bug, or a dropped message.
This is why we have SS session timeout, that prevents
keeping 'stalled' sessions forever.

Let's introduce a VTY option, which can be used to configure
this timer (by default it's set to 30 seconds):

hlr
  ...
  ! Use 0 to disable this timer
  ncss-guard-timeout 30

Change-Id: I971fc2cee6fd46d4d5d6dac6c634e0b22fff183d
Related: OS#3717

1 files changed, 3 insertions, 0 deletions

diff --git a/src/hlr.c b/src/hlr.c
index 14945b6..4873a66 100644
--- a/src/hlr.c
+++ b/src/hlr.c
@@ -611,6 +611,9 @@ int main(int argc, char **argv)
 	INIT_LLIST_HEAD(&g_hlr->ss_sessions);
 	INIT_LLIST_HEAD(&g_hlr->ussd_routes);
 
+	/* Init default (call independent) SS session guard timeout value */
+	g_hlr->ncss_guard_timeout = NCSS_GUARD_TIMEOUT_DEFAULT;
+
 	rc = osmo_init_logging2(hlr_ctx, &hlr_log_info);
 	if (rc < 0) {
 		fprintf(stderr, "Error initializing logging\n");