server.cpp

/* 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/server.h>

/* Build Instructions (Linux)
 * - g++ server.cpp -lopen62541 -o server */

using namespace std;

int main() {
    UA_Server *server = UA_Server_new();

    // add a variable node to the adresspace
    UA_VariableAttributes attr = UA_VariableAttributes_default;
    UA_Int32 myInteger = 42;
    UA_Variant_setScalarCopy(&attr.value, &myInteger, &UA_TYPES[UA_TYPES_INT32]);
    attr.description = UA_LOCALIZEDTEXT_ALLOC("en-US","the answer");
    attr.displayName = UA_LOCALIZEDTEXT_ALLOC("en-US","the answer");
    UA_NodeId myIntegerNodeId = UA_NODEID_STRING_ALLOC(1, "the.answer");
    UA_QualifiedName myIntegerName = UA_QUALIFIEDNAME_ALLOC(1, "the answer");
    UA_NodeId parentNodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER);
    UA_NodeId parentReferenceNodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES);
    UA_Server_addVariableNode(server, myIntegerNodeId, parentNodeId,
                              parentReferenceNodeId, myIntegerName,
                              UA_NODEID_NULL, attr, NULL, NULL);

    /* allocations on the heap need to be freed */
    UA_VariableAttributes_clear(&attr);
    UA_NodeId_clear(&myIntegerNodeId);
    UA_QualifiedName_clear(&myIntegerName);

    UA_StatusCode retval = UA_Server_runUntilInterrupt(server);

    UA_Server_delete(server);
    return retval == UA_STATUSCODE_GOOD ? EXIT_SUCCESS : EXIT_FAILURE;
}