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/*****************************************************************************
# *
# Copyright 2019 AT&T Intellectual Property *
# Copyright 2019 Nokia *
# *
# Licensed under the Apache License, Version 2.0 (the "License"); *
# you may not use this file except in compliance with the License. *
# You may obtain a copy of the License at *
# *
# http://www.apache.org/licenses/LICENSE-2.0 *
# *
# Unless required by applicable law or agreed to in writing, software *
# distributed under the License is distributed on an "AS IS" BASIS, *
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
# See the License for the specific language governing permissions and *
# limitations under the License. *
# *
******************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include "e2sim_sctp.hpp"
#include "e2ap_message_handler.hpp"
extern "C" {
#include "e2sim_defs.h"
#include "E2AP-PDU.h"
#include "e2ap_asn1c_codec.h"
#include "ProtocolIE-Field.h"
}
using namespace std;
void encode_and_send_sctp_data(E2AP_PDU_t* pdu, int client_fd)
{
uint8_t *buf;
sctp_buffer_t data;
data.len = e2ap_asn1c_encode_pdu(pdu, &buf);
memcpy(data.buffer, buf, min(data.len, MAX_SCTP_BUFFER));
sctp_send_data(client_fd, data);
}
void wait_for_sctp_data(int client_fd)
{
sctp_buffer_t recv_buf;
if(sctp_receive_data(client_fd, recv_buf) > 0)
{
LOG_I("[SCTP] Received new data of size %d", recv_buf.len);
e2ap_handle_sctp_data(client_fd, recv_buf);
}
}
void set_seqnum(E2AP_PDU_t* pdu)
{
InitiatingMessage_t *initiatingMessage = pdu->choice.initiatingMessage;
// xer_fprint(stdout, &asn_DEF_InitiatingMessage, (void *)initiatingMessage);
RICsubscriptionRequest_t *request = &initiatingMessage->value.choice.RICsubscriptionRequest;
xer_fprint(stdout, &asn_DEF_RICsubscriptionRequest, (void *)request);
LOG_I("num of IEs = %d", request->protocolIEs.list.count);
RICsubscriptionRequest_IEs_t *ie;
ie = request->protocolIEs.list.array[2];
xer_fprint(stdout, &asn_DEF_RICsubscription, (void *)ie);
// e2ap_asn1c_print_pdu(pdu);
}
int subresponse_get_sequenceNum(E2AP_PDU_t* pdu)
{
SuccessfulOutcome_t *responseMsg = pdu->choice.successfulOutcome;
RICrequestID_t *requestid;
int num_IEs = responseMsg->value.choice.RICsubscriptionResponse.protocolIEs.list.count;
for(int edx = 0; edx < num_IEs; edx++)
{
RICsubscriptionResponse_IEs_t *memb_ptr =
responseMsg->value.choice.RICsubscriptionResponse.protocolIEs.list.array[edx];
switch(memb_ptr->id)
{
case (ProtocolIE_ID_id_RICrequestID):
requestid = &memb_ptr->value.choice.RICrequestID;
// xer_fprint(stdout, &asn_DEF_RICrequestID, (void *)requestid);
return requestid->ricRequestSequenceNumber;
break;
}
}
}
void subrequest_set_sequenceNum(E2AP_PDU_t* pdu, int seq)
{
InitiatingMessage_t *initiatingMessage = pdu->choice.initiatingMessage;
RICrequestID_t *requestid;
int num_IEs = initiatingMessage->value.choice.RICsubscriptionRequest.protocolIEs.list.count;
for(int edx = 0; edx < num_IEs; edx++)
{
RICsubscriptionRequest_IEs_t *memb_ptr =
initiatingMessage->value.choice.RICsubscriptionRequest.protocolIEs.list.array[edx];
switch(memb_ptr->id)
{
case (ProtocolIE_ID_id_RICrequestID):
requestid = &memb_ptr->value.choice.RICrequestID;
requestid->ricRequestSequenceNumber = seq;
break;
}
}
}
void subscription_response_get_field(E2AP_PDU_t* pdu)
{
SuccessfulOutcome_t *responseMsg = pdu->choice.successfulOutcome;
RICrequestID_t *requestid;
RANfunctionID_t * ranfunctionid;
RICsubscription_t * ricsubscription;
int requestID_val, sequenceNum;
int num_IEs = responseMsg->value.choice.RICsubscriptionResponse.protocolIEs.list.count;
LOG_I("num of IEs = %d", num_IEs);
for(int edx = 0; edx < num_IEs; edx++)
{
RICsubscriptionResponse_IEs_t *memb_ptr =
responseMsg->value.choice.RICsubscriptionResponse.protocolIEs.list.array[edx];
switch(memb_ptr->id)
{
case (ProtocolIE_ID_id_RICrequestID):
requestid = &memb_ptr->value.choice.RICrequestID;
xer_fprint(stdout, &asn_DEF_RICrequestID, (void *)requestid);
requestID_val = requestid->ricRequestorID;
sequenceNum = requestid->ricRequestSequenceNumber;
requestid->ricRequestSequenceNumber = 202;
break;
case (ProtocolIE_ID_id_RANfunctionID):
ranfunctionid = &memb_ptr->value.choice.RANfunctionID;
xer_fprint(stdout, &asn_DEF_RANfunctionID, (void *)ranfunctionid);
break;
// case (ProtocolIE_ID_id_RICsubscription):
// ricsubscription = &memb_ptr->value.choice.RICsubscription;
// xer_fprint(stdout, &asn_DEF_RICsubscription, (void *)ricsubscription);
// break;
}
}
LOG_I("Request ID = %d, seq = %d", requestID_val, sequenceNum);
}
void subscription_request_get_field(E2AP_PDU_t* pdu)
{
InitiatingMessage_t *initiatingMessage = pdu->choice.initiatingMessage;
RICrequestID_t *requestid;
RANfunctionID_t * ranfunctionid;
RICsubscription_t * ricsubscription;
int num_IEs = initiatingMessage->value.choice.RICsubscriptionRequest.protocolIEs.list.count;
LOG_I("num of IEs = %d", num_IEs);
for(int edx = 0; edx < num_IEs; edx++)
{
RICsubscriptionRequest_IEs_t *memb_ptr =
initiatingMessage->value.choice.RICsubscriptionRequest.protocolIEs.list.array[edx];
switch(memb_ptr->id)
{
case (ProtocolIE_ID_id_RICrequestID):
requestid = &memb_ptr->value.choice.RICrequestID;
xer_fprint(stdout, &asn_DEF_RICrequestID, (void *)requestid);
break;
case (ProtocolIE_ID_id_RANfunctionID):
ranfunctionid = &memb_ptr->value.choice.RANfunctionID;
xer_fprint(stdout, &asn_DEF_RANfunctionID, (void *)ranfunctionid);
break;
case (ProtocolIE_ID_id_RICsubscription):
ricsubscription = &memb_ptr->value.choice.RICsubscription;
xer_fprint(stdout, &asn_DEF_RICsubscription, (void *)ricsubscription);
break;
}
}
}
int main(int argc, char* argv[]){
LOG_I("Start RIC Simulator - Performance Test");
options_t ops = read_input_options(argc, argv);
int client_fd = sctp_start_client(ops.server_ip, ops.server_port);
//1. Send ENDCX2Setup
E2AP_PDU_t* pdu_setup = e2ap_xml_to_pdu("E2AP_ENDCX2SetupRequest.xml");
// e2ap_asn1c_print_pdu(pdu_setup);
encode_and_send_sctp_data(pdu_setup, client_fd);
LOG_I("[SCTP] Sent ENDC X2 SETUP REQUEST");
//2. Receive ENDCX2SetupResponse
wait_for_sctp_data(client_fd);
//3. Send RICSubscriptionRequest
E2AP_PDU_t* pdu_sub = e2ap_xml_to_pdu("E2AP_RICsubscriptionRequest_Ashwin.xml");
e2ap_asn1c_print_pdu(pdu_sub);
encode_and_send_sctp_data(pdu_sub, client_fd);
LOG_I("[SCTP] Sent RIC SUBSCRIPTION REQUEST");
//4. Receive RIC SUBSCRIPT RESPONSE
int count = 0;
while(1)
{
usleep(1000); //sleep for one ms
sctp_buffer_t recv_buf;
int res_seq;
if(sctp_receive_data(client_fd, recv_buf) > 0)
{
LOG_I("[SCTP] Received new data of size %d", recv_buf.len);
// e2ap_handle_sctp_data(client_fd, recv_buf);
E2AP_PDU_t* res_pdu = new E2AP_PDU_t();
e2ap_asn1c_decode_pdu(res_pdu, recv_buf.buffer, recv_buf.len);
int procedureCode = e2ap_asn1c_get_procedureCode(res_pdu);
int index = (int)res_pdu->present;
if(index == E2AP_PDU_PR_successfulOutcome && \
procedureCode == ProcedureCode_id_ricSubscription)
{
res_seq =subresponse_get_sequenceNum(res_pdu);
count++;
LOG_I("Received RIC SUBSCRIPTION RESPONSE, seq = %d, totalCount = %d",\
res_seq, count);
//Put res_seq in new subscription request
E2AP_PDU_t* req_pdu = e2ap_xml_to_pdu("E2AP_RICsubscriptionRequest.xml");
subrequest_set_sequenceNum(req_pdu, res_seq);
// e2ap_asn1c_print_pdu(req_pdu);
encode_and_send_sctp_data(req_pdu, client_fd);
LOG_I("Send new SUBSCRIPT REQUEST, seq = %d", res_seq);
}
}
}
// E2AP_PDU_t* res_pdu = e2ap_xml_to_pdu("E2AP_RICsubscriptionResponse.xml");
//
// //Extract subscription response sequence number
// int res_seq = subresponse_get_sequenceNum(res_pdu);
// LOG_I("Subscription Response SeqNo = %d", res_seq);
//
// //Put responseSeq in new subscription request
// E2AP_PDU_t* req_pdu = e2ap_xml_to_pdu("E2AP_RICsubscriptionRequest.xml");
//
// subrequest_set_sequenceNum(req_pdu, res_seq);
// e2ap_asn1c_print_pdu(req_pdu);
return 0;
}