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- #include <open62541/client_config_default.h>
- #include <open62541/client_highlevel.h>
- #include <open62541/plugin/log_stdout.h>
- #include <signal.h>
- #include <stdlib.h>
- UA_Boolean running = true;
- static void stopHandler(int sign) {
- UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_CLIENT, "Received Ctrl-C");
- running = 0;
- }
- int main(void) {
- signal(SIGINT, stopHandler);
- UA_Client *client = UA_Client_new();
- UA_ClientConfig *cc = UA_Client_getConfig(client);
- UA_ClientConfig_setDefault(cc);
-
- cc->timeout = 1000;
-
- UA_Variant value;
- UA_Variant_init(&value);
-
- while(running) {
-
-
-
- UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
- if(retval != UA_STATUSCODE_GOOD) {
- UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_CLIENT, "Not connected. Retrying to connect in 1 second");
-
-
- UA_sleep_ms(1000);
- continue;
- }
-
- const UA_NodeId nodeId =
- UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_SERVERSTATUS_CURRENTTIME);
- retval = UA_Client_readValueAttribute(client, nodeId, &value);
- if(retval == UA_STATUSCODE_BADCONNECTIONCLOSED) {
- UA_LOG_ERROR(UA_Log_Stdout, UA_LOGCATEGORY_CLIENT,
- "Connection was closed. Reconnecting ...");
- continue;
- }
- if(retval == UA_STATUSCODE_GOOD &&
- UA_Variant_hasScalarType(&value, &UA_TYPES[UA_TYPES_DATETIME])) {
- UA_DateTime raw_date = *(UA_DateTime *) value.data;
- UA_DateTimeStruct dts = UA_DateTime_toStruct(raw_date);
- UA_LOG_INFO(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND,
- "date is: %02u-%02u-%04u %02u:%02u:%02u.%03u",
- dts.day, dts.month, dts.year, dts.hour, dts.min, dts.sec, dts.milliSec);
- }
- UA_Variant_clear(&value);
- UA_sleep_ms(1000);
- };
-
- UA_Variant_clear(&value);
- UA_Client_delete(client);
- return EXIT_SUCCESS;
- }
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