Issue-ID: SIM-18

[sim/e2-interface.git] / e2sim / e2apv1sim / ricsim / src / X2AP / x2ap_message_handler.cpp

diff --git a/e2sim/e2apv1sim/ricsim/src/X2AP/x2ap_message_handler.cpp b/e2sim/e2apv1sim/ricsim/src/X2AP/x2ap_message_handler.cpp
new file mode 100644 (file)
index 0000000..f818304
--- /dev/null
+++ b/e2sim/e2apv1sim/ricsim/src/X2AP/x2ap_message_handler.cpp
@@ -0,0 +1,128 @@
+/*****************************************************************************
+#                                                                            *
+# 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 "x2ap_message_handler.hpp"
+
+
+void x2ap_handle_sctp_data(int &socket_fd, sctp_buffer_t &data)
+{
+  //decode the data into X2AP-PDU
+  x2ap_pdu_t* pdu = new_x2ap_pdu();
+
+  x2ap_decode_pdu(pdu, data.buffer, data.len);
+
+  x2ap_print_pdu(pdu);
+
+  int index = x2ap_get_index(pdu);
+  int procedureCode = x2ap_get_procedureCode(pdu);
+
+  switch(procedureCode)
+  {
+    case 6: //X2Setup
+      switch(index)
+      {
+        case 1: //initiatingMessage
+          LOG_D("[X2AP] Received X2 SETUP REQUEST");
+          x2ap_handle_X2SetupRequest(pdu, socket_fd);
+          break;
+
+        case 2: //successfulOutcome
+          LOG_D("[X2AP] Received X2 SETUP RESPONSE");
+          //x2ap_handle_X2SetupResponse(pdu, socket_fd);
+          break;
+
+        case 3:
+          LOG_D("[X2AP] Received X2 SETUP FAILURE");
+          break;
+
+        default:
+          LOG_E("[X2AP] Invalid message index=%d in X2AP-PDU", index);
+          break;
+      }
+      break;
+
+    case 36: //ENDCX2Setup
+      switch(index)
+      {
+        case 1: //initiatingMessage
+          LOG_D("[X2AP] Received ENDC X2 SETUP REQUEST");
+          x2ap_handle_ENDCX2SetupRequest(pdu, socket_fd);
+          break;
+
+        case 2: //successfulOutcome
+          LOG_D("[X2AP] Received ENDC X2 SETUP RESPONSE");
+          //x2ap_handle_X2SetupResponse(pdu, socket_fd);
+          break;
+
+        case 3:
+          LOG_D("[X2AP] Received ENDC X2 SETUP FAILURE");
+          break;
+
+        default:
+          LOG_E("[X2AP] Invalid message index=%d in X2AP-PDU", index);
+          break;
+      }
+      break;
+
+    default:
+      LOG_E("[X2AP] No available handler for procedureCode=%d", procedureCode);
+      break;
+  }
+}
+
+void x2ap_handle_X2SetupRequest(x2ap_pdu_t* pdu, int &socket_fd)
+{
+  /*
+  Simply send back X2SetupResponse
+  Todo: add more handling options (failure, duplicated request, etc.)
+  */
+
+  x2ap_pdu_t* res_pdu = new_x2ap_pdu();
+  eNB_config cfg;
+
+  x2ap_create_X2SetupResponse(res_pdu, cfg);
+  LOG_D("[X2AP] Created X2 SETUP RESPONSE")
+
+  x2ap_print_pdu(res_pdu);
+
+  //encode response pdu into buffer
+  sctp_buffer_t res_data;
+  x2ap_encode_pdu(res_pdu, res_data.buffer, sizeof(res_data.buffer), res_data.len);
+
+  //send response data over sctp
+  if(sctp_send_data(socket_fd, res_data) > 0) {
+    LOG_D("[SCTP] Sent X2 SETUP RESPONSE");
+  } else {
+    LOG_D("[SCTP] Unable to send X2 SETUP RESPONSE to peer");
+  }
+}
+
+void x2ap_handle_X2SetupResponse(x2ap_pdu_t* pdu, int &socket_fd)
+{
+  ;
+}
+
+
+void x2ap_handle_ENDCX2SetupRequest(x2ap_pdu_t* pdu, int &socket_fd)
+{
+  /*
+  Simply send back ENDCX2SetupResponse
+  Todo: add more handling options (failure, duplicated request, etc.)
+  */
+  ;
+}