--- /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.
+ *
+ */
+
+#ifndef E2SIM_DEFS_H
+#define E2SIM_DEFS_H
+
+// #include <iostream>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define VERSION "1.2.0" //May 2019
+#define DEFAULT_SCTP_IP "127.0.0.1"
+#define X2AP_PPID (452984832) //27 = 1b, PPID = 1b000000(hex) -> 452984832(dec)
+#define X2AP_SCTP_PORT 36421
+#define RIC_SCTP_SRC_PORT 36422
+#define MAX_SCTP_BUFFER 10000
+#define WORKDIR_ENV "E2SIM_DIR" //environment variable
+
+char* time_stamp(void);
+
+// #define LOG_I(...) {printf("[%s]", time_stamp()); printf(__VA_ARGS__); printf("\n");}
+// #define LOG_E(...) {printf("[%s]", time_stamp()); printf(__VA_ARGS__); printf("\n");}
+// #define LOG_D(...) {printf("[%s]", time_stamp()); printf(__VA_ARGS__); printf("\n");}
+
+#define LOG_I(...) {printf(__VA_ARGS__); printf("\n");}
+#define LOG_E(...) {printf(__VA_ARGS__); printf("\n");}
+#define LOG_D(...) {printf(__VA_ARGS__); printf("\n");}
+
+typedef struct SCTP_DATA {
+ unsigned char *data;
+ int len;
+} sctp_data_t;
+
+typedef struct {
+ unsigned char buffer[MAX_SCTP_BUFFER];
+ int len;
+} sctp_buffer_t;
+
+typedef struct {
+ char* server_ip;
+ int server_port;
+ //... extend as needed
+} options_t;
+
+options_t read_input_options(int argc, char *argv[]);
+
+#define min(a, b) ((a) < (b)) ? (a) : (b)
+
+#endif