--- /dev/null
+/*****************************************************************************
+# *
+# 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 <string>
+#include <iostream>
+
+#include "e2sim_defs.h"
+#include "e2sim_sctp.hpp"
+#include "asn_e2ap.hpp"
+#include "e2ap_message_handler.hpp"
+
+using namespace std;
+
+void test(void)
+{
+ e2ap_pdu_t* pdu = new_e2ap_pdu();
+
+ gNB_config gnb_cfg;
+
+ e2ap_create_ENDCX2SetupResponse(pdu, gnb_cfg);
+
+ e2ap_print_pdu(pdu);
+
+ //Encode into buffer
+ sctp_buffer_t data;
+ e2ap_encode_pdu(pdu, data.buffer, sizeof(data.buffer), data.len);
+
+}
+
+int main(int argc, char* argv[]){
+
+ LOG_I("E2 Agent (E2 Simulator) Version %s", VERSION);
+
+ // test();
+ // return 0;
+
+ options_t ops = read_input_options(argc, argv);
+
+ int server_fd = sctp_start_server(ops.server_ip, ops.server_port);
+ int client_fd = sctp_accept_connection(ops.server_ip, server_fd);
+
+ sctp_buffer_t recv_buf;
+
+ LOG_I("[SCTP] Waiting for SCTP data");
+ while(1) //constantly looking for data on SCTP interface
+ {
+ if(sctp_receive_data(client_fd, recv_buf) <= 0)
+ break;
+
+ LOG_I("[SCTP] Received new data of size %d", recv_buf.len);
+
+ e2ap_handle_sctp_data(client_fd, recv_buf);
+ }
+
+ return 0;
+}