mirror of
https://github.com/open62541/open62541.git
synced 2025-06-03 04:00:21 +00:00
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* This work is licensed under a Creative Commons CCZero 1.0 Universal License.
|
|
* See http://creativecommons.org/publicdomain/zero/1.0/ for more information. */
|
|
|
|
#include "open62541.h"
|
|
#include <signal.h>
|
|
|
|
UA_Boolean running = true;
|
|
UA_Logger logger = UA_Log_Stdout;
|
|
|
|
static void stopHandler(int sign) {
|
|
UA_LOG_INFO(logger, UA_LOGCATEGORY_USERLAND, "Received Ctrl-C");
|
|
running = 0;
|
|
}
|
|
|
|
static void
|
|
inactivityCallback (UA_Client *client) {
|
|
UA_LOG_INFO(logger, UA_LOGCATEGORY_USERLAND, "Server Inactivity");
|
|
}
|
|
|
|
int main(void) {
|
|
signal(SIGINT, stopHandler); /* catches ctrl-c */
|
|
|
|
UA_ClientConfig config = UA_ClientConfig_default;
|
|
/* Set stateCallback */
|
|
config.inactivityCallback = inactivityCallback;
|
|
|
|
/* Perform a connectivity check every 2 seconds */
|
|
config.connectivityCheckInterval = 2000;
|
|
|
|
UA_Client *client = UA_Client_new(config);
|
|
|
|
/* Endless loop runAsync */
|
|
while (running) {
|
|
/* if already connected, this will return GOOD and do nothing */
|
|
/* if the connection is closed/errored, the connection will be reset and then reconnected */
|
|
/* Alternatively you can also use UA_Client_getState to get the current state */
|
|
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
|
|
if(retval != UA_STATUSCODE_GOOD) {
|
|
UA_LOG_ERROR(logger, UA_LOGCATEGORY_USERLAND, "Not connected. Retrying to connect in 1 second");
|
|
/* The connect may timeout after 1 second (see above) or it may fail immediately on network errors */
|
|
/* E.g. name resolution errors or unreachable network. Thus there should be a small sleep here */
|
|
UA_sleep_ms(1000);
|
|
continue;
|
|
}
|
|
|
|
UA_Client_run_iterate(client, 1000);
|
|
};
|
|
|
|
/* Clean up */
|
|
UA_Client_delete(client); /* Disconnects the client internally */
|
|
return UA_STATUSCODE_GOOD;
|
|
}
|