ussd: Keep track of used TIs for USSD and forward messages
Keep track of the used transaction identifier and always forward
messages to the USSD provider. E.g. this can be used to have a
dialogue going. Right now it is still possible that the MSC will
close down the connection.
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c
index c9c9b7b..4a6e36d 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c
@@ -981,6 +981,8 @@
msg = bsc_nat_rewrite_setup(bsc->nat, msg, parsed, con->imsi);
talloc_free(parsed);
parsed = NULL;
+ } else if (con->con_local == NAT_CON_END_USSD) {
+ bsc_check_ussd(con, parsed, msg);
}
con_bsc = con->bsc;