GtpUserX2: added some asserts

Author: avarga

src/simu5g/corenetwork/gtp/GtpUserX2.cc

@@ -61,8 +61,11 @@ void GtpUserX2::handleFromStack(Packet *pkt)
 {
     // extract destination from the message
     auto x2Msg = pkt->peekAtFront<LteX2Message>();
-    X2NodeId destId = MacNodeId(x2Msg->getDestinationId());
-    X2NodeId srcId = MacNodeId(x2Msg->getSourceId());
+    X2NodeId destId = x2Msg->getDestinationId();
+    X2NodeId srcId = x2Msg->getSourceId();
+    ASSERT(getNodeTypeById(srcId) == ENODEB);
+    ASSERT(getNodeTypeById(destId) == ENODEB);
+    ASSERT(srcId != destId);
     EV << "GtpUserX2::handleFromStack - Received a LteX2Message with destId[" << destId << "]" << endl;
 
     auto gtpMsg = makeShared<GtpUserMsg>();
@@ -71,6 +74,7 @@ void GtpUserX2::handleFromStack(Packet *pkt)
 
     // get the IP address of the destination X2 interface from the Binder
     L3Address peerAddress = binder_->getX2PeerAddress(srcId, destId);
+    ASSERT(!peerAddress.isUnspecified());
     socket_.sendTo(pkt, peerAddress, tunnelPeerPort_);
 }