Fix issue for Service request (NGAP encoded failed)

src/smf_app/smf_context.cpp

@@ -1532,6 +1532,7 @@ void smf_context::handle_pdu_session_update_sm_context_request(
       sm_context_req_msg.get_pdu_session_id());
   n11_sm_context_resp->res.set_snssai(sm_context_req_msg.get_snssai());
   n11_sm_context_resp->res.set_dnn(sm_context_req_msg.get_dnn());
+  n11_sm_context_resp->res.set_pdu_session_type(sp.get()->get_pdn_type().pdn_type);
 
   //Step 2.1. Decode N1 (if content is available)
   if (sm_context_req_msg.n1_sm_msg_is_set()) {

src/smf_app/smf_n1_n2.cpp

@@ -804,6 +804,8 @@ void smf_n1_n2::create_n2_sm_information(pdu_session_msg &msg,
       pduSessionType->value.choice.PDUSessionType = msg.get_pdu_session_type()
           - 1;  //TODO: dirty code, difference between Ngap_PDUSessionType_ipv4 vs pdu_session_type_e::PDU_SESSION_TYPE_E_IPV4 (TS 38.413 vs TS 24.501)
       ASN_SEQUENCE_ADD(&ngap_IEs->protocolIEs.list, pduSessionType);
+      Logger::smf_app().debug("PDU Session Type: %d ",
+                              msg.get_pdu_session_type());
 
       //SecurityIndication
       //TODO: should get from UDM