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IuUP: Allow Initialization with set rem IP address and unset rem port 

Do not refuse IuUP Initialization messages coming in on an RTP port if
the remote port is not yet known.
If an IUFP conn is not yet configured (pre-Initialization), allow rx
from any address or port.

An osmo-mgw client (eg. osmo-hnbgw) may wish to initially set a remote
IP address as a hint during CRCX, hence the IP address may already be
set while the port may be unset.

Related: SYS#6657
Change-Id: Idd833997abce46886e9664505b2776fa5dadc8db
This commit is contained in:
Pau Espin 2023-12-04 12:05:06 +01:00
parent dd1ddf74fc
commit 7787a3aeae
1 changed files with 2 additions and 1 deletions
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3
src/libosmo-mgcp/mgcp_network.c
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@ -834,7 +834,8 @@ static int check_rtp_origin(struct mgcp_conn_rtp *conn, struct osmo_sockaddr *ad
{
char ipbuf[INET6_ADDRSTRLEN];
if (osmo_sockaddr_is_any(&conn->end.addr) != 0) {
if (osmo_sockaddr_is_any(&conn->end.addr) != 0 ||
osmo_sockaddr_port(&conn->end.addr.u.sa) == 0) {
if (mgcp_conn_rtp_is_iuup(conn) && !conn->iuup.configured) {
/* Allow IuUP Initialization to get through even if we don't have a remote address set yet.
* This is needed because hNodeB doesn't announce its IuUP remote IP addr to the MGCP client