--- /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 <fstream>
+#include <vector>
+
+#include "e2sim.hpp"
+#include "e2sim_defs.h"
+#include "e2sim_sctp.hpp"
+#include "e2ap_message_handler.hpp"
+#include "encode_e2apv1.hpp"
+
+using namespace std;
+
+int client_fd = 0;
+
+void E2Sim::register_subscription_callback(long func_id, SubscriptionCallback cb) {
+ printf("%%%%about to register callback for subscription for func_id %d\n", func_id);
+ subscription_callbacks[func_id] = cb;
+
+}
+
+SubscriptionCallback E2Sim::get_subscription_callback(long func_id) {
+ printf("%%%%we are getting the subscription callback for func id %d\n", func_id);
+ SubscriptionCallback cb = subscription_callbacks[func_id];
+ return cb;
+
+}
+
+void E2Sim::register_e2sm(long func_id, OCTET_STRING_t *ostr) {
+
+ //Error conditions:
+ //If we already have an entry for func_id
+
+ printf("%%%%about to register e2sm func desc for %d\n", func_id);
+
+ ran_functions_registered[func_id] = ostr;
+
+}
+
+
+void E2Sim::encode_and_send_sctp_data(E2AP_PDU_t* pdu)
+{
+ 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 E2Sim::wait_for_sctp_data()
+{
+ 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, false, this);
+ }
+}
+
+
+int E2Sim::run_loop(int argc, char* argv[]){
+
+ printf("Start E2 Agent (E2 Simulator\n");
+
+ ifstream simfile;
+ string line;
+
+ simfile.open("simulation.txt", ios::in);
+
+ if (simfile.is_open()) {
+
+ while (getline(simfile, line)) {
+ cout << line << "\n";
+ }
+
+ simfile.close();
+
+ }
+
+ bool xmlenc = false;
+
+ options_t ops = read_input_options(argc, argv);
+
+ printf("After reading input options\n");
+
+ //E2 Agent will automatically restart upon sctp disconnection
+ // int server_fd = sctp_start_server(ops.server_ip, ops.server_port);
+
+ client_fd = sctp_start_client(ops.server_ip, ops.server_port);
+ E2AP_PDU_t* pdu_setup = (E2AP_PDU_t*)calloc(1,sizeof(E2AP_PDU));
+
+ printf("After starting client\n");
+ printf("client_fd value is %d\n", client_fd);
+
+ std::vector<ran_func_info> all_funcs;
+
+ //Loop through RAN function definitions that are registered
+
+ for (std::pair<long, OCTET_STRING_t*> elem : ran_functions_registered) {
+ printf("looping through ran func\n");
+ ran_func_info next_func;
+
+ next_func.ranFunctionId = elem.first;
+ next_func.ranFunctionDesc = elem.second;
+ next_func.ranFunctionRev = (long)2;
+ all_funcs.push_back(next_func);
+ }
+
+ printf("about to call setup request encode\n");
+
+ generate_e2apv1_setup_request_parameterized(pdu_setup, all_funcs);
+
+ printf("After generating e2setup req\n");
+
+ xer_fprint(stderr, &asn_DEF_E2AP_PDU, pdu_setup);
+
+ printf("After XER Encoding\n");
+
+ auto buffer_size = MAX_SCTP_BUFFER;
+ unsigned char buffer[MAX_SCTP_BUFFER];
+
+ sctp_buffer_t data;
+
+ char *error_buf = (char*)calloc(300, sizeof(char));
+ size_t errlen;
+
+ asn_check_constraints(&asn_DEF_E2AP_PDU, pdu_setup, error_buf, &errlen);
+ printf("error length %d\n", errlen);
+ printf("error buf %s\n", error_buf);
+
+ auto er = asn_encode_to_buffer(nullptr, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2AP_PDU, pdu_setup, buffer, buffer_size);
+
+ data.len = er.encoded;
+
+ fprintf(stderr, "er encded is %d\n", er.encoded);
+
+ memcpy(data.buffer, buffer, er.encoded);
+
+ if(sctp_send_data(client_fd, data) > 0) {
+ LOG_I("[SCTP] Sent E2-SETUP-REQUEST");
+ } else {
+ LOG_E("[SCTP] Unable to send E2-SETUP-REQUEST to peer");
+ }
+
+ 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, xmlenc, this);
+ if (xmlenc) xmlenc = false;
+ }
+
+ return 0;
+}
Code Review / sim / e2-interface.git / blobdiff