+void e2ap_handle_E2SeviceRequest(E2AP_PDU_t* pdu, int &socket_fd, E2Sim *e2sim) {\r
+\r
+ auto buffer_size = MAX_SCTP_BUFFER;\r
+ unsigned char buffer[MAX_SCTP_BUFFER];\r
+ E2AP_PDU_t* res_pdu = (E2AP_PDU_t*)calloc(1,sizeof(E2AP_PDU));\r
+\r
+ // prepare ran function defination\r
+ std::vector<encoding::ran_func_info> all_funcs;\r
+\r
+ //Loop through RAN function definitions that are registered\r
+\r
+ for (std::pair<long, OCTET_STRING_t*> elem : e2sim->getRegistered_ran_functions()) {\r
+ printf("looping through ran func\n");\r
+ encoding::ran_func_info next_func;\r
+\r
+ next_func.ranFunctionId = elem.first;\r
+ next_func.ranFunctionDesc = elem.second;\r
+ next_func.ranFunctionRev = (long)3;\r
+ all_funcs.push_back(next_func);\r
+ }\r
+ \r
+ printf("about to call service update encode\n");\r
+\r
+ encoding::generate_e2apv1_service_update(res_pdu, all_funcs);\r
+\r
+ LOG_D("[E2AP] Created E2-SERVICE-UPDATE");\r
+\r
+ e2ap_asn1c_print_pdu(res_pdu);\r
+\r
+ sctp_buffer_t data;\r
+\r
+ char *error_buf = (char*)calloc(300, sizeof(char));\r
+ size_t errlen;\r
+\r
+ asn_check_constraints(&asn_DEF_E2AP_PDU, res_pdu, error_buf, &errlen);\r
+ printf("error length %d\n", errlen);\r
+ printf("error buf %s\n", error_buf);\r
+\r
+ auto er = asn_encode_to_buffer(nullptr, ATS_ALIGNED_BASIC_PER, &asn_DEF_E2AP_PDU, res_pdu, buffer, buffer_size);\r
+\r
+ data.len = er.encoded;\r
+ fprintf(stderr, "er encoded is %d\n", er.encoded);\r
+\r
+ memcpy(data.buffer, buffer, er.encoded);\r
+\r
+ //send response data over sctp\r
+ if(sctp_send_data(socket_fd, data) > 0) {\r
+ LOG_I("[SCTP] Sent E2-SERVICE-UPDATE");\r
+ } else {\r
+ LOG_E("[SCTP] Unable to send E2-SERVICE-UPDATE to peer");\r
+ }\r
+}\r
+\r