/*
 * Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
 *
 * This file is part of Open5GS.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "test-common.h"

static void failure_func(abts_case *tc, void *data)
{
    int rv;
    ogs_socknode_t *ngap1, *ngap2;
    ogs_socknode_t *gtpu1, *gtpu2;
    ogs_pkbuf_t *gmmbuf;
    ogs_pkbuf_t *gsmbuf;
    ogs_pkbuf_t *nasbuf;
    ogs_pkbuf_t *sendbuf;
    ogs_pkbuf_t *recvbuf;
    ogs_ngap_message_t message;
    int i;

    uint8_t tmp[OGS_HUGE_LEN];
    char *_gtp_payload = "34ff0024"
        "0000000100000085 010002004500001c 0c0b000040015a7a 0a2d00010a2d0002"
        "00000964cd7c291f";

    ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
    test_ue_t *test_ue = NULL;
    test_sess_t *sess = NULL;
    test_bearer_t *qos_flow = NULL;

    bson_t *doc = NULL;

    /* Setup Test UE & Session Context */
    memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));

    mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
    mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
    mobile_identity_suci.routing_indicator1 = 0;
    mobile_identity_suci.routing_indicator2 = 0xf;
    mobile_identity_suci.routing_indicator3 = 0xf;
    mobile_identity_suci.routing_indicator4 = 0xf;
    mobile_identity_suci.protection_scheme_id = OGS_PROTECTION_SCHEME_NULL;
    mobile_identity_suci.home_network_pki_value = 0;

    test_ue = test_ue_add_by_suci(&mobile_identity_suci, "0000203190");
    ogs_assert(test_ue);

    test_ue->nr_cgi.cell_id = 0x40001;

    test_ue->nas.registration.tsc = 0;
    test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
    test_ue->nas.registration.follow_on_request = 1;
    test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;

    test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
    test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";

    /* Two gNB connects to AMF */
    ngap1 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap1);

    ngap2 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap2);

    /* Two gNB connects to UPF */
    gtpu1 = test_gtpu_server(1, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu1);

    gtpu2 = test_gtpu_server(2, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu2);

    /* NG-Setup Reqeust/Response for Source gNB */
    sendbuf = testngap_build_ng_setup_request(0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* NG-Setup Reqeust/Response for Target gNB */
    sendbuf = testngap_build_ng_setup_request(0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /********** Insert Subscriber in Database */
    doc = test_db_new_session(test_ue);
    ABTS_PTR_NOTNULL(tc, doc);
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));

    /* Send Registration request */
    test_ue->registration_request_param.guti = 1;
    gmmbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, gmmbuf);

    test_ue->registration_request_param.gmm_capability = 1;
    test_ue->registration_request_param.s1_ue_network_capability = 1;
    test_ue->registration_request_param.requested_nssai = 1;
    test_ue->registration_request_param.last_visited_registered_tai = 1;
    test_ue->registration_request_param.ue_usage_setting = 1;
    nasbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, nasbuf);

    sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf,
                NGAP_RRCEstablishmentCause_mo_Signalling, false, true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Identity request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Identity response */
    gmmbuf = testgmm_build_identity_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Authentication request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Authentication response */
    gmmbuf = testgmm_build_authentication_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Security mode command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Security mode complete */
    gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive InitialContextSetupRequest +
     * Registration accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_InitialContextSetup,
            test_ue->ngap_procedure_code);

    /* Send UERadioCapabilityInfoIndication */
    sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send InitialContextSetupResponse */
    sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send Registration complete */
    gmmbuf = testgmm_build_registration_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Configuration update command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDUSessionResourceSetupRequest +
     * DL NAS transport +
     * PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_PDUSessionResourceSetup,
            test_ue->ngap_procedure_code);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "ims", 6);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session modification command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session resource modify response */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);

    sendbuf = testngap_build_qos_flow_resource_modify_response(qos_flow);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDU session resource modify complete */
    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_MODIFICATION_REQUEST;
    sess->ul_nas_transport_param.dnn = 0;
    sess->ul_nas_transport_param.s_nssai = 0;

    sess->pdu_session_establishment_param.ssc_mode = 0;
    sess->pdu_session_establishment_param.epco = 0;

    gsmbuf = testgsm_build_pdu_session_modification_complete(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Waiting for creating dedicated QoS flow in PFCP protocol */
    ogs_msleep(100);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverFailure */
    sendbuf = testngap_build_handover_failure(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_unspecified);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Receive HandoverPreparationFailure */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverFailure */
    sendbuf = testngap_build_handover_failure(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_unspecified);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverPreparationFailure */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseRequest */
    sendbuf = testngap_build_ue_context_release_request(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_UEContextRelease,
            test_ue->ngap_procedure_code);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    ogs_msleep(300);

    /********** Remove Subscriber in Database */
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));

    /* Two gNB disonncect from UPF */
    testgnb_gtpu_close(gtpu1);
    testgnb_gtpu_close(gtpu2);

    /* Two gNB disonncect from AMF */
    testgnb_ngap_close(ngap1);
    testgnb_ngap_close(ngap2);

    /* Clear Test UE Context */
    test_ue_remove(test_ue);
}

static void direct_complete_func(abts_case *tc, void *data)
{
    int rv;
    ogs_socknode_t *ngap1, *ngap2;
    ogs_socknode_t *gtpu1, *gtpu2;
    ogs_pkbuf_t *gmmbuf;
    ogs_pkbuf_t *gsmbuf;
    ogs_pkbuf_t *nasbuf;
    ogs_pkbuf_t *sendbuf;
    ogs_pkbuf_t *recvbuf;
    ogs_ngap_message_t message;
    int i;

    uint8_t tmp[OGS_HUGE_LEN];
    char *_gtp_payload = "34ff0024"
        "0000000100000085 010002004500001c 0c0b000040015a7a 0a2d00010a2d0002"
        "00000964cd7c291f";

    ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
    test_ue_t *test_ue = NULL;
    test_sess_t *sess = NULL;
    test_bearer_t *qos_flow = NULL;

    uint64_t ran_ue_ngap_id;
    uint64_t amf_ue_ngap_id;

    bson_t *doc = NULL;

    /* Setup Test UE & Session Context */
    memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));

    mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
    mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
    mobile_identity_suci.routing_indicator1 = 0;
    mobile_identity_suci.routing_indicator2 = 0xf;
    mobile_identity_suci.routing_indicator3 = 0xf;
    mobile_identity_suci.routing_indicator4 = 0xf;
    mobile_identity_suci.protection_scheme_id = OGS_PROTECTION_SCHEME_NULL;
    mobile_identity_suci.home_network_pki_value = 0;

    test_ue = test_ue_add_by_suci(&mobile_identity_suci, "0000203190");
    ogs_assert(test_ue);

    test_ue->nr_cgi.cell_id = 0x40001;

    test_ue->nas.registration.tsc = 0;
    test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
    test_ue->nas.registration.follow_on_request = 1;
    test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;

    test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
    test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";

    /* Two gNB connects to AMF */
    ngap1 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap1);

    ngap2 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap2);

    /* Two gNB connects to UPF */
    gtpu1 = test_gtpu_server(1, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu1);

    gtpu2 = test_gtpu_server(2, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu2);

    /* NG-Setup Reqeust/Response for Source gNB */
    sendbuf = testngap_build_ng_setup_request(0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* NG-Setup Reqeust/Response for Target gNB */
    sendbuf = testngap_build_ng_setup_request(0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /********** Insert Subscriber in Database */
    doc = test_db_new_session(test_ue);
    ABTS_PTR_NOTNULL(tc, doc);
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));

    /* Send Registration request */
    test_ue->registration_request_param.guti = 1;
    gmmbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, gmmbuf);

    test_ue->registration_request_param.gmm_capability = 1;
    test_ue->registration_request_param.s1_ue_network_capability = 1;
    test_ue->registration_request_param.requested_nssai = 1;
    test_ue->registration_request_param.last_visited_registered_tai = 1;
    test_ue->registration_request_param.ue_usage_setting = 1;
    nasbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, nasbuf);

    sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf,
                NGAP_RRCEstablishmentCause_mo_Signalling, false, true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Identity request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Identity response */
    gmmbuf = testgmm_build_identity_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Authentication request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Authentication response */
    gmmbuf = testgmm_build_authentication_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Security mode command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Security mode complete */
    gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive InitialContextSetupRequest +
     * Registration accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_InitialContextSetup,
            test_ue->ngap_procedure_code);

    /* Send UERadioCapabilityInfoIndication */
    sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send InitialContextSetupResponse */
    sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send Registration complete */
    gmmbuf = testgmm_build_registration_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Configuration update command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDUSessionResourceSetupRequest +
     * DL NAS transport +
     * PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_PDUSessionResourceSetup,
            test_ue->ngap_procedure_code);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "ims", 6);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session modification command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session resource modify response */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);

    sendbuf = testngap_build_qos_flow_resource_modify_response(qos_flow);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDU session resource modify complete */
    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_MODIFICATION_REQUEST;
    sess->ul_nas_transport_param.dnn = 0;
    sess->ul_nas_transport_param.s_nssai = 0;

    sess->pdu_session_establishment_param.ssc_mode = 0;
    sess->pdu_session_establishment_param.epco = 0;

    gsmbuf = testgsm_build_pdu_session_modification_complete(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Waiting for creating dedicated QoS flow in PFCP protocol */
    ogs_msleep(100);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UplinkRANConfigurationTransfer */
    sendbuf = testngap_build_uplink_ran_configuration_transfer(
            0x4000, 28, 0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANConfigurationTransfer */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UplinkRANConfigurationTransfer */
    sendbuf = testngap_build_uplink_ran_configuration_transfer(
            0x4001, 28, 0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANConfigurationTransfer */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb2_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UplinkRANStatusTransfer */
    sendbuf = testngap_build_uplink_ran_status_transfer(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANStatusTransfer */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverNotify */
    test_ue->nr_cgi.cell_id = 0x40011;
    sendbuf = testngap_build_handover_notify(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive UEContextReleaseCommand */
    amf_ue_ngap_id = test_ue->amf_ue_ngap_id;
    ran_ue_ngap_id = test_ue->ran_ue_ngap_id;

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    test_ue->amf_ue_ngap_id = amf_ue_ngap_id;
    test_ue->ran_ue_ngap_id = ran_ue_ngap_id;

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4000, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb1_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UplinkRANStatusTransfer */
    sendbuf = testngap_build_uplink_ran_status_transfer(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANStatusTransfer */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverNotify */
    test_ue->nr_cgi.cell_id = 0x40001;
    sendbuf = testngap_build_handover_notify(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive UEContextReleaseCommand */
    amf_ue_ngap_id = test_ue->amf_ue_ngap_id;
    ran_ue_ngap_id = test_ue->ran_ue_ngap_id;

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    test_ue->amf_ue_ngap_id = amf_ue_ngap_id;
    test_ue->ran_ue_ngap_id = ran_ue_ngap_id;

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UEContextReleaseRequest */
    sendbuf = testngap_build_ue_context_release_request(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_UEContextRelease,
            test_ue->ngap_procedure_code);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    ogs_msleep(300);

    /********** Remove Subscriber in Database */
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));

    /* Two gNB disonncect from UPF */
    testgnb_gtpu_close(gtpu1);
    testgnb_gtpu_close(gtpu2);

    /* Two gNB disonncect from AMF */
    testgnb_ngap_close(ngap1);
    testgnb_ngap_close(ngap2);

    /* Clear Test UE Context */
    test_ue_remove(test_ue);
}

static void direct_cancel_func(abts_case *tc, void *data)
{
    int rv;
    ogs_socknode_t *ngap1, *ngap2;
    ogs_socknode_t *gtpu1, *gtpu2;
    ogs_pkbuf_t *gmmbuf;
    ogs_pkbuf_t *gsmbuf;
    ogs_pkbuf_t *nasbuf;
    ogs_pkbuf_t *sendbuf;
    ogs_pkbuf_t *recvbuf;
    ogs_ngap_message_t message;
    int i;

    uint8_t tmp[OGS_HUGE_LEN];
    char *_gtp_payload = "34ff0024"
        "0000000100000085 010002004500001c 0c0b000040015a7a 0a2d00010a2d0002"
        "00000964cd7c291f";

    ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
    test_ue_t *test_ue = NULL;
    test_sess_t *sess = NULL;
    test_bearer_t *qos_flow = NULL;

    bson_t *doc = NULL;

    /* Setup Test UE & Session Context */
    memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));

    mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
    mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
    mobile_identity_suci.routing_indicator1 = 0;
    mobile_identity_suci.routing_indicator2 = 0xf;
    mobile_identity_suci.routing_indicator3 = 0xf;
    mobile_identity_suci.routing_indicator4 = 0xf;
    mobile_identity_suci.protection_scheme_id = OGS_PROTECTION_SCHEME_NULL;
    mobile_identity_suci.home_network_pki_value = 0;

    test_ue = test_ue_add_by_suci(&mobile_identity_suci, "0000203190");
    ogs_assert(test_ue);

    test_ue->nr_cgi.cell_id = 0x40001;

    test_ue->nas.registration.tsc = 0;
    test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
    test_ue->nas.registration.follow_on_request = 1;
    test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;

    test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
    test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";

    /* Two gNB connects to AMF */
    ngap1 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap1);

    ngap2 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap2);

    /* Two gNB connects to UPF */
    gtpu1 = test_gtpu_server(1, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu1);

    gtpu2 = test_gtpu_server(2, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu2);

    /* NG-Setup Reqeust/Response for Source gNB */
    sendbuf = testngap_build_ng_setup_request(0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* NG-Setup Reqeust/Response for Target gNB */
    sendbuf = testngap_build_ng_setup_request(0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /********** Insert Subscriber in Database */
    doc = test_db_new_session(test_ue);
    ABTS_PTR_NOTNULL(tc, doc);
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));

    /* Send Registration request */
    test_ue->registration_request_param.guti = 1;
    gmmbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, gmmbuf);

    test_ue->registration_request_param.gmm_capability = 1;
    test_ue->registration_request_param.s1_ue_network_capability = 1;
    test_ue->registration_request_param.requested_nssai = 1;
    test_ue->registration_request_param.last_visited_registered_tai = 1;
    test_ue->registration_request_param.ue_usage_setting = 1;
    nasbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, nasbuf);

    sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf,
                NGAP_RRCEstablishmentCause_mo_Signalling, false, true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Identity request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Identity response */
    gmmbuf = testgmm_build_identity_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Authentication request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Authentication response */
    gmmbuf = testgmm_build_authentication_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Security mode command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Security mode complete */
    gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive InitialContextSetupRequest +
     * Registration accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_InitialContextSetup,
            test_ue->ngap_procedure_code);

    /* Send UERadioCapabilityInfoIndication */
    sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send InitialContextSetupResponse */
    sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send Registration complete */
    gmmbuf = testgmm_build_registration_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Configuration update command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDUSessionResourceSetupRequest +
     * DL NAS transport +
     * PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_PDUSessionResourceSetup,
            test_ue->ngap_procedure_code);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "ims", 6);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session modification command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session resource modify response */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);

    sendbuf = testngap_build_qos_flow_resource_modify_response(qos_flow);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDU session resource modify complete */
    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_MODIFICATION_REQUEST;
    sess->ul_nas_transport_param.dnn = 0;
    sess->ul_nas_transport_param.s_nssai = 0;

    sess->pdu_session_establishment_param.ssc_mode = 0;
    sess->pdu_session_establishment_param.epco = 0;

    gsmbuf = testgsm_build_pdu_session_modification_complete(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Waiting for creating dedicated QoS flow in PFCP protocol */
    ogs_msleep(100);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb2_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverCancel */
    sendbuf = testngap_build_handover_cancel(test_ue,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_txnrelocoverall_expiry);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Recv HandoverCancelAcknowledge */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseRequest */
    sendbuf = testngap_build_ue_context_release_request(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_UEContextRelease,
            test_ue->ngap_procedure_code);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    ogs_msleep(300);

    /********** Remove Subscriber in Database */
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));

    /* Two gNB disonncect from UPF */
    testgnb_gtpu_close(gtpu1);
    testgnb_gtpu_close(gtpu2);

    /* Two gNB disonncect from AMF */
    testgnb_ngap_close(ngap1);
    testgnb_ngap_close(ngap2);

    /* Clear Test UE Context */
    test_ue_remove(test_ue);
}

static void indirect_complete_func(abts_case *tc, void *data)
{
    int rv;
    ogs_socknode_t *ngap1, *ngap2;
    ogs_socknode_t *gtpu1, *gtpu2;
    ogs_pkbuf_t *gmmbuf;
    ogs_pkbuf_t *gsmbuf;
    ogs_pkbuf_t *nasbuf;
    ogs_pkbuf_t *sendbuf;
    ogs_pkbuf_t *recvbuf;
    ogs_pkbuf_t *pkbuf;
    ogs_ngap_message_t message;
    int i;

    uint8_t tmp[OGS_HUGE_LEN];
    char *_gtp_payload = "34ff0024"
        "0000000100000085 010002004500001c 0c0b000040015a7a 0a2d00010a2d0002"
        "00000964cd7c291f";

    ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
    test_ue_t *test_ue = NULL;
    test_sess_t *sess = NULL;
    test_bearer_t *qos_flow = NULL;

    uint64_t ran_ue_ngap_id;
    uint64_t amf_ue_ngap_id;

    bson_t *doc = NULL;

    /* Setup Test UE & Session Context */
    memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));

    mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
    mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
    mobile_identity_suci.routing_indicator1 = 0;
    mobile_identity_suci.routing_indicator2 = 0xf;
    mobile_identity_suci.routing_indicator3 = 0xf;
    mobile_identity_suci.routing_indicator4 = 0xf;
    mobile_identity_suci.protection_scheme_id = OGS_PROTECTION_SCHEME_NULL;
    mobile_identity_suci.home_network_pki_value = 0;

    test_ue = test_ue_add_by_suci(&mobile_identity_suci, "0000203190");
    ogs_assert(test_ue);

    test_ue->nr_cgi.cell_id = 0x40001;

    test_ue->nas.registration.tsc = 0;
    test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
    test_ue->nas.registration.follow_on_request = 1;
    test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;

    test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
    test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";

    /* Two gNB connects to AMF */
    ngap1 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap1);

    ngap2 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap2);

    /* Two gNB connects to UPF */
    gtpu1 = test_gtpu_server(1, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu1);

    gtpu2 = test_gtpu_server(2, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu2);

    /* NG-Setup Reqeust/Response for Source gNB */
    sendbuf = testngap_build_ng_setup_request(0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* NG-Setup Reqeust/Response for Target gNB */
    sendbuf = testngap_build_ng_setup_request(0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /********** Insert Subscriber in Database */
    doc = test_db_new_session(test_ue);
    ABTS_PTR_NOTNULL(tc, doc);
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));

    /* Send Registration request */
    test_ue->registration_request_param.guti = 1;
    gmmbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, gmmbuf);

    test_ue->registration_request_param.gmm_capability = 1;
    test_ue->registration_request_param.s1_ue_network_capability = 1;
    test_ue->registration_request_param.requested_nssai = 1;
    test_ue->registration_request_param.last_visited_registered_tai = 1;
    test_ue->registration_request_param.ue_usage_setting = 1;
    nasbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, nasbuf);

    sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf,
                NGAP_RRCEstablishmentCause_mo_Signalling, false, true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Identity request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Identity response */
    gmmbuf = testgmm_build_identity_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Authentication request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Authentication response */
    gmmbuf = testgmm_build_authentication_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Security mode command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Security mode complete */
    gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive InitialContextSetupRequest +
     * Registration accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_InitialContextSetup,
            test_ue->ngap_procedure_code);

    /* Send UERadioCapabilityInfoIndication */
    sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send InitialContextSetupResponse */
    sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send Registration complete */
    gmmbuf = testgmm_build_registration_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Configuration update command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDUSessionResourceSetupRequest +
     * DL NAS transport +
     * PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_PDUSessionResourceSetup,
            test_ue->ngap_procedure_code);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "ims", 6);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session modification command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session resource modify response */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);

    sendbuf = testngap_build_qos_flow_resource_modify_response(qos_flow);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDU session resource modify complete */
    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_MODIFICATION_REQUEST;
    sess->ul_nas_transport_param.dnn = 0;
    sess->ul_nas_transport_param.s_nssai = 0;

    sess->pdu_session_establishment_param.ssc_mode = 0;
    sess->pdu_session_establishment_param.epco = 0;

    gsmbuf = testgsm_build_pdu_session_modification_complete(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Waiting for creating dedicated QoS flow in PFCP protocol */
    ogs_msleep(100);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb2_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);

    /* Copy ICMP Packet */
    pkbuf = ogs_pkbuf_copy(recvbuf);
    ABTS_PTR_NOTNULL(tc, pkbuf);
    ogs_pkbuf_pull(pkbuf, OGS_GTPV1U_5GC_HEADER_LEN);

    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U Packet with Indirect Data Forwarding */
    rv = test_gtpu_send_indirect_data_forwarding(gtpu1, qos_flow, pkbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UplinkRANStatusTransfer */
    sendbuf = testngap_build_uplink_ran_status_transfer(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANStatusTransfer */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverNotify */
    test_ue->nr_cgi.cell_id = 0x40011;
    sendbuf = testngap_build_handover_notify(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive UEContextReleaseCommand */
    amf_ue_ngap_id = test_ue->amf_ue_ngap_id;
    ran_ue_ngap_id = test_ue->ran_ue_ngap_id;

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    test_ue->amf_ue_ngap_id = amf_ue_ngap_id;
    test_ue->ran_ue_ngap_id = ran_ue_ngap_id;

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Waiting for removing Indirect Data Forwarding */
    ogs_msleep(100);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4000, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb1_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);

    /* Copy ICMP Packet */
    pkbuf = ogs_pkbuf_copy(recvbuf);
    ABTS_PTR_NOTNULL(tc, pkbuf);
    ogs_pkbuf_pull(pkbuf, OGS_GTPV1U_5GC_HEADER_LEN);

    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U Packet with Indirect Data Forwarding */
    rv = test_gtpu_send_indirect_data_forwarding(gtpu2, qos_flow, pkbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UplinkRANStatusTransfer */
    sendbuf = testngap_build_uplink_ran_status_transfer(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANStatusTransfer */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverNotify */
    test_ue->nr_cgi.cell_id = 0x40001;
    sendbuf = testngap_build_handover_notify(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive UEContextReleaseCommand */
    amf_ue_ngap_id = test_ue->amf_ue_ngap_id;
    ran_ue_ngap_id = test_ue->ran_ue_ngap_id;

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    test_ue->amf_ue_ngap_id = amf_ue_ngap_id;
    test_ue->ran_ue_ngap_id = ran_ue_ngap_id;

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UEContextReleaseRequest */
    sendbuf = testngap_build_ue_context_release_request(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_UEContextRelease,
            test_ue->ngap_procedure_code);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    ogs_msleep(300);

    /********** Remove Subscriber in Database */
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));

    /* Two gNB disonncect from UPF */
    testgnb_gtpu_close(gtpu1);
    testgnb_gtpu_close(gtpu2);

    /* Two gNB disonncect from AMF */
    testgnb_ngap_close(ngap1);
    testgnb_ngap_close(ngap2);

    /* Clear Test UE Context */
    test_ue_remove(test_ue);
}

static void indirect_cancel_func(abts_case *tc, void *data)
{
    int rv;
    ogs_socknode_t *ngap1, *ngap2;
    ogs_socknode_t *gtpu1, *gtpu2;
    ogs_pkbuf_t *gmmbuf;
    ogs_pkbuf_t *gsmbuf;
    ogs_pkbuf_t *nasbuf;
    ogs_pkbuf_t *sendbuf;
    ogs_pkbuf_t *recvbuf;
    ogs_pkbuf_t *pkbuf;
    ogs_ngap_message_t message;
    int i;

    uint8_t tmp[OGS_HUGE_LEN];
    char *_gtp_payload = "34ff0024"
        "0000000100000085 010002004500001c 0c0b000040015a7a 0a2d00010a2d0002"
        "00000964cd7c291f";

    ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
    test_ue_t *test_ue = NULL;
    test_sess_t *sess = NULL;
    test_bearer_t *qos_flow = NULL;

    uint64_t ran_ue_ngap_id;
    uint64_t amf_ue_ngap_id;

    bson_t *doc = NULL;

    /* Setup Test UE & Session Context */
    memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));

    mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
    mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
    mobile_identity_suci.routing_indicator1 = 0;
    mobile_identity_suci.routing_indicator2 = 0xf;
    mobile_identity_suci.routing_indicator3 = 0xf;
    mobile_identity_suci.routing_indicator4 = 0xf;
    mobile_identity_suci.protection_scheme_id = OGS_PROTECTION_SCHEME_NULL;
    mobile_identity_suci.home_network_pki_value = 0;

    test_ue = test_ue_add_by_suci(&mobile_identity_suci, "0000203190");
    ogs_assert(test_ue);

    test_ue->nr_cgi.cell_id = 0x40001;

    test_ue->nas.registration.tsc = 0;
    test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
    test_ue->nas.registration.follow_on_request = 1;
    test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;

    test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
    test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";

    /* Two gNB connects to AMF */
    ngap1 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap1);

    ngap2 = testngap_client(AF_INET);
    ABTS_PTR_NOTNULL(tc, ngap2);

    /* Two gNB connects to UPF */
    gtpu1 = test_gtpu_server(1, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu1);

    gtpu2 = test_gtpu_server(2, AF_INET);
    ABTS_PTR_NOTNULL(tc, gtpu2);

    /* NG-Setup Reqeust/Response for Source gNB */
    sendbuf = testngap_build_ng_setup_request(0x4000, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* NG-Setup Reqeust/Response for Target gNB */
    sendbuf = testngap_build_ng_setup_request(0x4001, 28);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /********** Insert Subscriber in Database */
    doc = test_db_new_session(test_ue);
    ABTS_PTR_NOTNULL(tc, doc);
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));

    /* Send Registration request */
    test_ue->registration_request_param.guti = 1;
    gmmbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, gmmbuf);

    test_ue->registration_request_param.gmm_capability = 1;
    test_ue->registration_request_param.s1_ue_network_capability = 1;
    test_ue->registration_request_param.requested_nssai = 1;
    test_ue->registration_request_param.last_visited_registered_tai = 1;
    test_ue->registration_request_param.ue_usage_setting = 1;
    nasbuf = testgmm_build_registration_request(test_ue, NULL, false, false);
    ABTS_PTR_NOTNULL(tc, nasbuf);

    sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf,
                NGAP_RRCEstablishmentCause_mo_Signalling, false, true);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Identity request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Identity response */
    gmmbuf = testgmm_build_identity_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Authentication request */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Authentication response */
    gmmbuf = testgmm_build_authentication_response(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Security mode command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send Security mode complete */
    gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive InitialContextSetupRequest +
     * Registration accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_InitialContextSetup,
            test_ue->ngap_procedure_code);

    /* Send UERadioCapabilityInfoIndication */
    sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send InitialContextSetupResponse */
    sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send Registration complete */
    gmmbuf = testgmm_build_registration_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive Configuration update command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDUSessionResourceSetupRequest +
     * DL NAS transport +
     * PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_PDUSessionResourceSetup,
            test_ue->ngap_procedure_code);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send PDU session establishment request */
    sess = test_sess_add_by_dnn_and_psi(test_ue, "ims", 6);
    ogs_assert(sess);

    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
    sess->ul_nas_transport_param.dnn = 1;
    sess->ul_nas_transport_param.s_nssai = 1;

    sess->pdu_session_establishment_param.ssc_mode = 1;
    sess->pdu_session_establishment_param.epco = 1;

    gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session establishment accept */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDUSessionResourceSetupResponse */
    sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive PDU session modification command */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send PDU session resource modify response */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);

    sendbuf = testngap_build_qos_flow_resource_modify_response(qos_flow);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Send PDU session resource modify complete */
    sess->ul_nas_transport_param.request_type =
        OGS_NAS_5GS_REQUEST_TYPE_MODIFICATION_REQUEST;
    sess->ul_nas_transport_param.dnn = 0;
    sess->ul_nas_transport_param.s_nssai = 0;

    sess->pdu_session_establishment_param.ssc_mode = 0;
    sess->pdu_session_establishment_param.epco = 0;

    gsmbuf = testgsm_build_pdu_session_modification_complete(sess);
    ABTS_PTR_NOTNULL(tc, gsmbuf);
    gmmbuf = testgmm_build_ul_nas_transport(sess,
            OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
    ABTS_PTR_NOTNULL(tc, gmmbuf);
    sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Waiting for creating dedicated QoS flow in PFCP protocol */
    ogs_msleep(100);

    /* Send GTP-U ICMP Packet */
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4001, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb2_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu1, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);

    /* Copy ICMP Packet */
    pkbuf = ogs_pkbuf_copy(recvbuf);
    ABTS_PTR_NOTNULL(tc, pkbuf);
    ogs_pkbuf_pull(pkbuf, OGS_GTPV1U_5GC_HEADER_LEN);

    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U Packet with Indirect Data Forwarding */
    rv = test_gtpu_send_indirect_data_forwarding(gtpu1, qos_flow, pkbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send UplinkRANStatusTransfer */
    sendbuf = testngap_build_uplink_ran_status_transfer(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive DownlinkRANStatusTransfer */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverNotify */
    test_ue->nr_cgi.cell_id = 0x40011;
    sendbuf = testngap_build_handover_notify(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive End Mark */
    recvbuf = test_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Receive UEContextReleaseCommand */
    amf_ue_ngap_id = test_ue->amf_ue_ngap_id;
    ran_ue_ngap_id = test_ue->ran_ue_ngap_id;

    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    test_ue->amf_ue_ngap_id = amf_ue_ngap_id;
    test_ue->ran_ue_ngap_id = ran_ue_ngap_id;

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 5);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U ICMP Packet */
    qos_flow = test_qos_flow_find_by_qfi(sess, 2);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverRequired */
    sendbuf = testngap_build_handover_required(
            test_ue, NGAP_HandoverType_intra5gs,
            0x4000, 28,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_handover_desirable_for_radio_reason,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverRequest */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send HandoverRequestAcknowledge */
    ogs_list_for_each(&test_ue->sess_list, sess)
        sess->gnb_n3_addr = test_self()->gnb1_addr;

    sendbuf = testngap_build_handover_request_ack(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive HandoverCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send GTP-U ICMP Packet */
    sess = test_sess_find_by_psi(test_ue, 6);
    ogs_assert(sess);
    qos_flow = test_qos_flow_find_by_qfi(sess, 1);
    ogs_assert(qos_flow);
    rv = test_gtpu_send_ping(gtpu2, qos_flow, TEST_PING_IPV4);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu2);
    ABTS_PTR_NOTNULL(tc, recvbuf);

    /* Copy ICMP Packet */
    pkbuf = ogs_pkbuf_copy(recvbuf);
    ABTS_PTR_NOTNULL(tc, pkbuf);
    ogs_pkbuf_pull(pkbuf, OGS_GTPV1U_5GC_HEADER_LEN);

    ogs_pkbuf_free(recvbuf);

    /* Send GTP-U Packet with Indirect Data Forwarding */
    rv = test_gtpu_send_indirect_data_forwarding(gtpu2, qos_flow, pkbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive GTP-U ICMP Packet */
    recvbuf = testgnb_gtpu_read(gtpu1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    ogs_pkbuf_free(recvbuf);

    /* Send HandoverCancel */
    sendbuf = testngap_build_handover_cancel(test_ue,
            NGAP_Cause_PR_radioNetwork,
            NGAP_CauseRadioNetwork_txnrelocoverall_expiry);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap1);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap1, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Recv HandoverCancelAcknowledge */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);

    /* Send UEContextReleaseRequest */
    sendbuf = testngap_build_ue_context_release_request(test_ue,
            NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
            false);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    /* Receive UEContextReleaseCommand */
    recvbuf = testgnb_ngap_read(ngap2);
    ABTS_PTR_NOTNULL(tc, recvbuf);
    testngap_recv(test_ue, recvbuf);
    ABTS_INT_EQUAL(tc,
            NGAP_ProcedureCode_id_UEContextRelease,
            test_ue->ngap_procedure_code);

    /* Send UEContextReleaseComplete */
    sendbuf = testngap_build_ue_context_release_complete(test_ue);
    ABTS_PTR_NOTNULL(tc, sendbuf);
    rv = testgnb_ngap_send(ngap2, sendbuf);
    ABTS_INT_EQUAL(tc, OGS_OK, rv);

    ogs_msleep(300);

    /********** Remove Subscriber in Database */
    ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));

    /* Two gNB disonncect from UPF */
    testgnb_gtpu_close(gtpu1);
    testgnb_gtpu_close(gtpu2);

    /* Two gNB disonncect from AMF */
    testgnb_ngap_close(ngap1);
    testgnb_ngap_close(ngap2);

    /* Clear Test UE Context */
    test_ue_remove(test_ue);
}

abts_suite *test_5gc_n2(abts_suite *suite)
{
    suite = ADD_SUITE(suite)

    abts_run_test(suite, failure_func, NULL);
    abts_run_test(suite, direct_complete_func, NULL);
    abts_run_test(suite, direct_cancel_func, NULL);
    abts_run_test(suite, indirect_complete_func, NULL);
    abts_run_test(suite, indirect_cancel_func, NULL);

    return suite;
}