问禁化武组织C++监视项目做回调功能

EN

int main(void) {
   signal(SIGINT, stopHandler); /* catches ctrl-c */

   UA_Client *client = UA_Client_new();
   UA_ClientConfig *cc = UA_Client_getConfig(client);
   UA_ClientConfig_setDefault(cc);

   UA_Client_connect(client, "opc.tcp://localhost");

   UA_MonitoredItemCreateResult result;
   UA_CreateSubscriptionResponse response; // warning memory leak
   UA_CreateSubscriptionRequest request = UA_CreateSubscriptionRequest_default();

   UA_Client_Subscriptions_create(client, request, NULL, NULL,  NULL);
   UA_Int32 subId = response.subscriptionId;

   if(response.responseHeader.serviceResult == UA_STATUSCODE_GOOD)
   {
      UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND ,  "subscription succed");
   } else {
      UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND ,  "subscription UNsucced");
   }

   UA_MonitoredItemCreateRequest monRequest = UA_MonitoredItemCreateRequest_default(UA_NODEID_NUMERIC(1, 6070));

   result = UA_Client_MonitoredItems_createDataChange(client, subId, UA_TIMESTAMPSTORETURN_BOTH, monRequest, NULL, handler_events_datachange, NULL);

   while(running) {
    
   }
}