Send NF registration after initiating HTTP server

src/oai_smf/main.cpp

@@ -150,6 +150,9 @@ int main(int argc, char** argv) {
   smf_http1_manager.join();
   smf_http2_manager.join();
 
+  // Register to NRF and discover appropriate UPFs
+  smf_app_inst->start_nf_registration_discovery();
+
   FILE* fp             = NULL;
   std::string filename = fmt::format("/tmp/smf_{}.status", getpid());
   fp                   = fopen(filename.c_str(), "w+");

src/smf_app/smf_app.cpp

@@ -341,6 +341,19 @@ smf_app::smf_app(const std::string& config_file)
     throw;
   }
 
+  Logger::smf_app().startup("Started");
+}
+
+//------------------------------------------------------------------------------
+smf_app::~smf_app() {
+  Logger::smf_app().debug("Delete SMF_APP instance...");
+  // TODO: Unregister NRF
+  if (smf_n4_inst) delete smf_n4_inst;
+  if (smf_sbi_inst) delete smf_sbi_inst;
+}
+
+//------------------------------------------------------------------------------
+void smf_app::start_nf_registration_discovery() {
   if (smf_cfg.discover_upf) {
     // Trigger NFStatusNotify subscription to be noticed when a new UPF becomes
     // available (if this option is enabled)
@@ -360,17 +373,8 @@ smf_app::smf_app(const std::string& config_file)
     usleep(microsecond);
     register_to_nrf();
   }
-
-  Logger::smf_app().startup("Started");
 }
 
-//------------------------------------------------------------------------------
-smf_app::~smf_app() {
-  Logger::smf_app().debug("Delete SMF_APP instance...");
-  // TODO: Unregister NRF
-  if (smf_n4_inst) delete smf_n4_inst;
-  if (smf_sbi_inst) delete smf_sbi_inst;
-}
 //------------------------------------------------------------------------------
 void smf_app::start_upf_association(const pfcp::node_id_t& node_id) {
   std::time_t time_epoch = std::time(nullptr);

src/smf_app/smf_app.hpp

@@ -665,6 +665,13 @@ class smf_app {
   void start_upf_association(
       const pfcp::node_id_t& node_id, const upf_profile& profile);
 
+  /*
+   * To start NF registration with NRF and subscribe to UPF event notification
+   * @param void
+   * @return void
+   */
+  void start_nf_registration_discovery();
+
   /*
    * To store a promise of a PDU Session Create SM Contex Response to be
    * triggered when the result is ready