static void
variables_variants(void) {
/* Set a scalar value */
UA_Variant v;
UA_Int32 i = 42;
UA_Variant_setScalar(&v, &i, &UA_TYPES[UA_TYPES_INT32]);
/* Make a copy */
UA_Variant v2;
UA_Variant_copy(&v, &v2);
UA_Variant_deleteMembers(&v2);
/* Set an array value */
UA_Variant v3;
UA_Double d[9] = {1.0, 2.0, 3.0,
4.0, 5.0, 6.0,
7.0, 8.0, 9.0};
UA_Variant_setArrayCopy(&v3, d, 9, &UA_TYPES[UA_TYPES_DOUBLE]);
/* Set array dimensions */
v3.arrayDimensions = (UA_UInt32 *)UA_Array_new(2, &UA_TYPES[UA_TYPES_UINT32]);
v3.arrayDimensionsSize = 2;
v3.arrayDimensions[0] = 3;
v3.arrayDimensions[1] = 3;
UA_Variant_deleteMembers(&v3);
}
END_TEST
START_TEST(Client_methodcall) {
UA_Client *client = UA_Client_new(UA_ClientConfig_default);
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_UInt32 subId;
retval = UA_Client_Subscriptions_new(client, UA_SubscriptionSettings_default, &subId);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
/* monitor the server state */
UA_UInt32 monId;
retval = UA_Client_Subscriptions_addMonitoredItem(client, subId, UA_NODEID_NUMERIC(0, 2259),
UA_ATTRIBUTEID_VALUE, NULL, NULL, &monId);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
/* call a method to get monitored item id */
UA_Variant input;
UA_Variant_init(&input);
UA_Variant_setScalarCopy(&input, &subId, &UA_TYPES[UA_TYPES_UINT32]);
size_t outputSize;
UA_Variant *output;
retval = UA_Client_call(client, UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER),
UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_GETMONITOREDITEMS), 1, &input, &outputSize, &output);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
ck_assert_uint_eq(outputSize, 2);
ck_assert_uint_eq(output[0].arrayLength, 1);
ck_assert_uint_eq(*((UA_UInt32*)output[0].data), monId);
UA_Array_delete(output, outputSize, &UA_TYPES[UA_TYPES_VARIANT]);
UA_Variant_deleteMembers(&input);
/* call with invalid subscription id */
UA_Variant_init(&input);
subId = 0;
UA_Variant_setScalarCopy(&input, &subId, &UA_TYPES[UA_TYPES_UINT32]);
retval = UA_Client_call(client, UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER),
UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_GETMONITOREDITEMS), 1, &input, &outputSize, &output);
ck_assert_uint_eq(retval, UA_STATUSCODE_BADSUBSCRIPTIONIDINVALID);
UA_Variant_deleteMembers(&input);
UA_Client_disconnect(client);
UA_Client_delete(client);
}
END_TEST
/* Send the next message after the securechannel timed out */
START_TEST(SecureChannel_timeout_fail) {
UA_Client *client = UA_Client_new();
UA_ClientConfig_setDefault(UA_Client_getConfig(client));
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_ClientConfig *cconfig = UA_Client_getConfig(client);
UA_fakeSleep(cconfig->secureChannelLifeTime + 1);
UA_realSleep(50 + 1); // UA_MAXTIMEOUT+1 wait to be sure UA_Server_run_iterate can be completely executed
UA_Variant val;
UA_Variant_init(&val);
UA_NodeId nodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_SERVERSTATUS_STATE);
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert(retval != UA_STATUSCODE_GOOD);
UA_Variant_deleteMembers(&val);
UA_Client_disconnect(client);
UA_Client_delete(client);
}
END_TEST
START_TEST(SecureChannel_cableunplugged) {
UA_Client *client = UA_Client_new();
UA_ClientConfig_setDefault(UA_Client_getConfig(client));
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant val;
UA_Variant_init(&val);
UA_NodeId nodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_SERVER_SERVERSTATUS_STATE);
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant_deleteMembers(&val);
UA_Client_recv = client->connection.recv;
client->connection.recv = UA_Client_recvTesting;
/* Simulate network cable unplugged (no response from server) */
UA_Client_recvTesting_result = UA_STATUSCODE_GOODNONCRITICALTIMEOUT;
UA_Variant_init(&val);
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_BADCONNECTIONCLOSED);
ck_assert_msg(UA_Client_getState(client) == UA_CLIENTSTATE_DISCONNECTED);
UA_Client_recvTesting_result = UA_STATUSCODE_GOOD;
UA_Client_delete(client);
}
static UA_StatusCode
CopyValueIntoNode(UA_VariableNode *node, const UA_WriteValue *wvalue) {
UA_assert(wvalue->attributeId == UA_ATTRIBUTEID_VALUE);
UA_assert(node->nodeClass == UA_NODECLASS_VARIABLE || node->nodeClass == UA_NODECLASS_VARIABLETYPE);
UA_assert(node->valueSource == UA_VALUESOURCE_VARIANT);
/* Parse the range */
UA_NumericRange range;
UA_NumericRange *rangeptr = NULL;
UA_StatusCode retval = UA_STATUSCODE_GOOD;
if(wvalue->indexRange.length > 0) {
retval = parse_numericrange(&wvalue->indexRange, &range);
if(retval != UA_STATUSCODE_GOOD)
return retval;
rangeptr = ⦥
}
/* The nodeid on the wire may be != the nodeid in the node: opaque types, enums and bytestrings.
nodeV contains the correct type definition. */
const UA_Variant *newV = &wvalue->value.value;
UA_Variant *oldV = &node->value.variant.value;
UA_Variant cast_v;
if (oldV->type != NULL) { // Don't run NodeId_equal on a NULL pointer (happens if the variable never held a variant)
if(!UA_NodeId_equal(&oldV->type->typeId, &newV->type->typeId)) {
cast_v = wvalue->value.value;
newV = &cast_v;
enum type_equivalence te1 = typeEquivalence(oldV->type);
enum type_equivalence te2 = typeEquivalence(newV->type);
if(te1 != TYPE_EQUIVALENCE_NONE && te1 == te2) {
/* An enum was sent as an int32, or an opaque type as a bytestring. This is
detected with the typeIndex indicated the "true" datatype. */
cast_v.type = oldV->type;
} else if(oldV->type == &UA_TYPES[UA_TYPES_BYTE] && !UA_Variant_isScalar(oldV) &&
newV->type == &UA_TYPES[UA_TYPES_BYTESTRING] && UA_Variant_isScalar(newV)) {
/* a string is written to a byte array */
UA_ByteString *str = (UA_ByteString*) newV->data;
cast_v.arrayLength = str->length;
cast_v.data = str->data;
cast_v.type = &UA_TYPES[UA_TYPES_BYTE];
} else {
if(rangeptr)
UA_free(range.dimensions);
return UA_STATUSCODE_BADTYPEMISMATCH;
}
}
}
if(!rangeptr) {
UA_Variant_deleteMembers(&node->value.variant.value);
UA_Variant_copy(newV, &node->value.variant.value);
} else
retval = UA_Variant_setRangeCopy(&node->value.variant.value, newV->data, newV->arrayLength, range);
if(node->value.variant.callback.onWrite)
node->value.variant.callback.onWrite(node->value.variant.callback.handle, node->nodeId,
&node->value.variant.value, rangeptr);
if(rangeptr)
UA_free(range.dimensions);
return retval;
}
int main(void) {
signal(SIGINT, stopHandler); /* catches ctrl-c */
UA_ClientConfig config = UA_ClientConfig_default;
/* default timeout is 5 seconds. Set it to 1 second here for demo */
config.timeout = 1000;
UA_Client *client = UA_Client_new(config);
/* Read the value attribute of the node. UA_Client_readValueAttribute is a
* wrapper for the raw read service available as UA_Client_Service_read. */
UA_Variant value; /* Variants can hold scalar values and arrays of any type */
UA_Variant_init(&value);
/* Endless loop reading the server time */
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_CLIENT, "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;
}
/* NodeId of the variable holding the current time */
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(logger, 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_String string_date = UA_DateTime_toString(raw_date);
UA_LOG_INFO(logger, UA_LOGCATEGORY_CLIENT, "string date is: %.*s", (int) string_date.length, string_date.data);
UA_String_deleteMembers(&string_date);
}
UA_sleep_ms(1000);
};
/* Clean up */
UA_Variant_deleteMembers(&value);
UA_Client_delete(client); /* Disconnects the client internally */
return UA_STATUSCODE_GOOD;
}
END_TEST
START_TEST(Client_reconnect) {
UA_ClientConfig clientConfig = UA_ClientConfig_default;
clientConfig.timeout = 100;
UA_Client *client = UA_Client_new(clientConfig);
setup();
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant val;
UA_NodeId nodeId = UA_NODEID_STRING(1, "my.variable");
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant_deleteMembers(&val);
// restart server to test reconnect
teardown();
setup();
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_BADCONNECTIONCLOSED);
retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant_deleteMembers(&val);
UA_Client_disconnect(client);
UA_Client_delete(client);
teardown();
}
END_TEST
START_TEST(Client_read) {
UA_Client *client = UA_Client_new(UA_ClientConfig_default);
UA_StatusCode retval = UA_Client_connect(client, "opc.tcp://localhost:4840");
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant val;
UA_NodeId nodeId = UA_NODEID_STRING(1, "my.variable");
retval = UA_Client_readValueAttribute(client, nodeId, &val);
ck_assert_uint_eq(retval, UA_STATUSCODE_GOOD);
UA_Variant_deleteMembers(&val);
UA_Client_disconnect(client);
UA_Client_delete(client);
}
void UA_Node_deleteMembersAnyNodeClass(UA_Node *node) {
/* delete standard content */
UA_NodeId_deleteMembers(&node->nodeId);
UA_QualifiedName_deleteMembers(&node->browseName);
UA_LocalizedText_deleteMembers(&node->displayName);
UA_LocalizedText_deleteMembers(&node->description);
UA_Array_delete(node->references, node->referencesSize, &UA_TYPES[UA_TYPES_REFERENCENODE]);
node->references = NULL;
node->referencesSize = 0;
/* delete unique content of the nodeclass */
switch(node->nodeClass) {
case UA_NODECLASS_OBJECT:
break;
case UA_NODECLASS_METHOD:
break;
case UA_NODECLASS_OBJECTTYPE:
break;
case UA_NODECLASS_VARIABLE:
case UA_NODECLASS_VARIABLETYPE: {
UA_VariableNode *p = (UA_VariableNode*)node;
if(p->valueSource == UA_VALUESOURCE_VARIANT)
UA_Variant_deleteMembers(&p->value.variant.value);
break;
}
case UA_NODECLASS_REFERENCETYPE: {
UA_ReferenceTypeNode *p = (UA_ReferenceTypeNode*)node;
UA_LocalizedText_deleteMembers(&p->inverseName);
break;
}
case UA_NODECLASS_DATATYPE:
break;
case UA_NODECLASS_VIEW:
break;
default:
break;
}
}
END_TEST
START_TEST(Nodes_checkInheritedValue)
{
UA_NodeId childState;
findChildId(UA_NODEID_NUMERIC(1, 6020), UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "State"), &childState);
ck_assert(!UA_NodeId_isNull(&childState));
UA_NodeId childNumber;
findChildId(childState, UA_NODEID_NUMERIC(0, UA_NS0ID_HASPROPERTY),
UA_QUALIFIEDNAME(1, "CustomStateNumber"), &childNumber);
ck_assert(!UA_NodeId_isNull(&childNumber));
UA_Variant inheritedValue;
UA_Variant_init(&inheritedValue);
UA_Server_readValue(server, childNumber, &inheritedValue);
ck_assert(inheritedValue.type == &UA_TYPES[UA_TYPES_UINT32]);
UA_UInt32 *value = (UA_UInt32 *) inheritedValue.data;
ck_assert_int_eq(*value, valueToBeInherited);
UA_Variant_deleteMembers(&inheritedValue);
}
static UA_StatusCode writeValue(UA_Server *server, UA_WriteValue *wvalue) {
UA_StatusCode retval = UA_STATUSCODE_GOOD;
/* is there a value at all */
if(!wvalue->value.hasValue)
return UA_STATUSCODE_BADTYPEMISMATCH;
// we might repeat writing, e.g. when the node got replaced mid-work
UA_Boolean done = UA_FALSE;
while(!done) {
const UA_Node *node = UA_NodeStore_get(server->nodestore, &wvalue->nodeId);
if(!node)
return UA_STATUSCODE_BADNODEIDUNKNOWN;
switch(wvalue->attributeId) {
case UA_ATTRIBUTEID_NODEID:
case UA_ATTRIBUTEID_NODECLASS:
case UA_ATTRIBUTEID_BROWSENAME:
case UA_ATTRIBUTEID_DISPLAYNAME:
case UA_ATTRIBUTEID_DESCRIPTION:
case UA_ATTRIBUTEID_WRITEMASK:
case UA_ATTRIBUTEID_USERWRITEMASK:
case UA_ATTRIBUTEID_ISABSTRACT:
case UA_ATTRIBUTEID_SYMMETRIC:
case UA_ATTRIBUTEID_INVERSENAME:
case UA_ATTRIBUTEID_CONTAINSNOLOOPS:
case UA_ATTRIBUTEID_EVENTNOTIFIER:
retval = UA_STATUSCODE_BADWRITENOTSUPPORTED;
break;
case UA_ATTRIBUTEID_VALUE: {
if(node->nodeClass != UA_NODECLASS_VARIABLE &&
node->nodeClass != UA_NODECLASS_VARIABLETYPE) {
retval = UA_STATUSCODE_BADTYPEMISMATCH;
break;
}
/* parse the range */
UA_Boolean hasRange = UA_FALSE;
UA_NumericRange range;
if(wvalue->indexRange.length > 0) {
retval = parse_numericrange(wvalue->indexRange, &range);
if(retval != UA_STATUSCODE_GOOD)
break;
hasRange = UA_TRUE;
}
/* the relevant members are similar for variables and variabletypes */
const UA_VariableNode *vn = (const UA_VariableNode*)node;
if(vn->valueSource == UA_VALUESOURCE_DATASOURCE) {
if(!vn->value.dataSource.write) {
retval = UA_STATUSCODE_BADWRITENOTSUPPORTED;
break;
}
// todo: writing ranges
retval = vn->value.dataSource.write(vn->value.dataSource.handle, &wvalue->value.value);
done = UA_TRUE;
break;
}
const UA_Variant *oldV = &vn->value.variant;
/* the nodeid on the wire may be != the nodeid in the node: opaque types, enums and bytestrings */
if(!UA_NodeId_equal(&oldV->type->typeId, &wvalue->value.value.type->typeId)) {
if(oldV->type->namespaceZero && wvalue->value.value.type->namespaceZero &&
oldV->type->typeIndex == wvalue->value.value.type->typeIndex)
/* An enum was sent as an int32, or an opaque type as a bytestring. This is
detected with the typeIndex indicated the "true" datatype. */
wvalue->value.value.type = oldV->type;
else if(oldV->type == &UA_TYPES[UA_TYPES_BYTE] &&
(!oldV->data || vn->value.variant.arrayLength > -1) /* isArray */ &&
wvalue->value.value.type == &UA_TYPES[UA_TYPES_BYTESTRING] &&
wvalue->value.value.data && wvalue->value.value.arrayLength == -1 /* isScalar */) {
/* a string is written to a byte array */
UA_ByteString *str = (UA_ByteString*) wvalue->value.value.data;
wvalue->value.value.arrayLength = str->length;
wvalue->value.value.data = str->data;
wvalue->value.value.type = &UA_TYPES[UA_TYPES_BYTE];
UA_free(str);
} else {
retval = UA_STATUSCODE_BADTYPEMISMATCH;
break;
}
}
/* copy the node */
UA_VariableNode *newVn = (node->nodeClass == UA_NODECLASS_VARIABLE) ?
UA_VariableNode_new() : (UA_VariableNode*)UA_VariableTypeNode_new();
if(!newVn) {
retval = UA_STATUSCODE_BADOUTOFMEMORY;
break;
}
retval = (node->nodeClass == UA_NODECLASS_VARIABLE) ? UA_VariableNode_copy(vn, newVn) :
UA_VariableTypeNode_copy((const UA_VariableTypeNode*)vn, (UA_VariableTypeNode*)newVn);
if(retval != UA_STATUSCODE_GOOD)
goto clean_up;
/* insert the new value*/
if(hasRange)
retval = UA_Variant_setRange(&newVn->value.variant, wvalue->value.value.data, range);
else {
UA_Variant_deleteMembers(&newVn->value.variant);
retval = UA_Variant_copy(&wvalue->value.value, &newVn->value.variant);
}
if(retval != UA_STATUSCODE_GOOD ||
UA_NodeStore_replace(server->nodestore, node, (UA_Node*)newVn,
UA_NULL) != UA_STATUSCODE_GOOD)
goto clean_up;
if(hasRange)
UA_free(range.dimensions);
done = UA_TRUE;
break;
clean_up:
if(node->nodeClass == UA_NODECLASS_VARIABLE)
UA_VariableNode_delete(newVn);
else
UA_VariableTypeNode_delete((UA_VariableTypeNode*)newVn);
if(hasRange)
UA_free(range.dimensions);
}
break;
case UA_ATTRIBUTEID_DATATYPE:
case UA_ATTRIBUTEID_VALUERANK:
case UA_ATTRIBUTEID_ARRAYDIMENSIONS:
case UA_ATTRIBUTEID_ACCESSLEVEL:
case UA_ATTRIBUTEID_USERACCESSLEVEL:
case UA_ATTRIBUTEID_MINIMUMSAMPLINGINTERVAL:
case UA_ATTRIBUTEID_HISTORIZING:
case UA_ATTRIBUTEID_EXECUTABLE:
case UA_ATTRIBUTEID_USEREXECUTABLE:
retval = UA_STATUSCODE_BADWRITENOTSUPPORTED;
break;
default:
retval = UA_STATUSCODE_BADATTRIBUTEIDINVALID;
break;
}
UA_NodeStore_release(node);
if(retval != UA_STATUSCODE_GOOD)
break;
}
return retval;
}
int main(int argc, char *argv[]) {
UA_Client *client = UA_Client_new(UA_ClientConfig_standard, Logger_Stdout_new());
UA_StatusCode retval = UA_Client_connect(client, ClientNetworkLayerTCP_connect,
"opc.tcp://localhost:16664");
if(retval != UA_STATUSCODE_GOOD) {
UA_Client_delete(client);
return retval;
}
// Browse some objects
printf("Browsing nodes in objects folder:\n");
UA_BrowseRequest bReq;
UA_BrowseRequest_init(&bReq);
bReq.requestedMaxReferencesPerNode = 0;
bReq.nodesToBrowse = UA_BrowseDescription_new();
bReq.nodesToBrowseSize = 1;
bReq.nodesToBrowse[0].nodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER); //browse objects folder
bReq.nodesToBrowse[0].resultMask = UA_BROWSERESULTMASK_ALL; //return everything
UA_BrowseResponse bResp = UA_Client_browse(client, &bReq);
printf("%-9s %-16s %-16s %-16s\n", "NAMESPACE", "NODEID", "BROWSE NAME", "DISPLAY NAME");
for (int i = 0; i < bResp.resultsSize; ++i) {
for (int j = 0; j < bResp.results[i].referencesSize; ++j) {
UA_ReferenceDescription *ref = &(bResp.results[i].references[j]);
if(ref->nodeId.nodeId.identifierType == UA_NODEIDTYPE_NUMERIC) {
printf("%-9d %-16d %-16.*s %-16.*s\n", ref->browseName.namespaceIndex,
ref->nodeId.nodeId.identifier.numeric, ref->browseName.name.length,
ref->browseName.name.data, ref->displayName.text.length, ref->displayName.text.data);
} else if(ref->nodeId.nodeId.identifierType == UA_NODEIDTYPE_STRING) {
printf("%-9d %-16.*s %-16.*s %-16.*s\n", ref->browseName.namespaceIndex,
ref->nodeId.nodeId.identifier.string.length, ref->nodeId.nodeId.identifier.string.data,
ref->browseName.name.length, ref->browseName.name.data, ref->displayName.text.length,
ref->displayName.text.data);
}
//TODO: distinguish further types
}
}
UA_BrowseRequest_deleteMembers(&bReq);
UA_BrowseResponse_deleteMembers(&bResp);
#ifdef ENABLE_SUBSCRIPTIONS
// Create a subscription with interval 0 (immediate)...
UA_Int32 subId = UA_Client_newSubscription(client, 0);
if (subId)
printf("Create subscription succeeded, id %u\n", subId);
// .. and monitor TheAnswer
UA_NodeId monitorThis;
monitorThis = UA_NODEID_STRING_ALLOC(1, "the.answer");
UA_UInt32 monId = UA_Client_monitorItemChanges(client, subId, monitorThis, UA_ATTRIBUTEID_VALUE, &handler_TheAnswerChanged );
if (monId)
printf("Monitoring 'the.answer', id %u\n", subId);
UA_NodeId_deleteMembers(&monitorThis);
// First Publish always generates data (current value) and call out handler.
UA_Client_doPublish(client);
// This should not generate anything
UA_Client_doPublish(client);
#endif
UA_Int32 value = 0;
// Read node's value
printf("\nReading the value of node (1, \"the.answer\"):\n");
UA_ReadRequest rReq;
UA_ReadRequest_init(&rReq);
rReq.nodesToRead = UA_ReadValueId_new();
rReq.nodesToReadSize = 1;
rReq.nodesToRead[0].nodeId = UA_NODEID_STRING_ALLOC(1, "the.answer"); /* assume this node exists */
rReq.nodesToRead[0].attributeId = UA_ATTRIBUTEID_VALUE;
UA_ReadResponse rResp = UA_Client_read(client, &rReq);
if(rResp.responseHeader.serviceResult == UA_STATUSCODE_GOOD &&
rResp.resultsSize > 0 && rResp.results[0].hasValue &&
UA_Variant_isScalar(&rResp.results[0].value) &&
rResp.results[0].value.type == &UA_TYPES[UA_TYPES_INT32]) {
value = *(UA_Int32*)rResp.results[0].value.data;
printf("the value is: %i\n", value);
}
UA_ReadRequest_deleteMembers(&rReq);
UA_ReadResponse_deleteMembers(&rResp);
value++;
// Write node's value
printf("\nWriting a value of node (1, \"the.answer\"):\n");
UA_WriteRequest wReq;
UA_WriteRequest_init(&wReq);
wReq.nodesToWrite = UA_WriteValue_new();
wReq.nodesToWriteSize = 1;
wReq.nodesToWrite[0].nodeId = UA_NODEID_STRING_ALLOC(1, "the.answer"); /* assume this node exists */
wReq.nodesToWrite[0].attributeId = UA_ATTRIBUTEID_VALUE;
wReq.nodesToWrite[0].value.hasValue = UA_TRUE;
wReq.nodesToWrite[0].value.value.type = &UA_TYPES[UA_TYPES_INT32];
wReq.nodesToWrite[0].value.value.storageType = UA_VARIANT_DATA_NODELETE; //do not free the integer on deletion
wReq.nodesToWrite[0].value.value.data = &value;
UA_WriteResponse wResp = UA_Client_write(client, &wReq);
if(wResp.responseHeader.serviceResult == UA_STATUSCODE_GOOD)
printf("the new value is: %i\n", value);
UA_WriteRequest_deleteMembers(&wReq);
UA_WriteResponse_deleteMembers(&wResp);
#ifdef ENABLE_SUBSCRIPTIONS
// Take another look at the.answer... this should call the handler.
UA_Client_doPublish(client);
// Delete our subscription (which also unmonitors all items)
if(!UA_Client_removeSubscription(client, subId))
printf("Subscription removed\n");
#endif
#ifdef ENABLE_METHODCALLS
/* Note: This example requires Namespace 0 Node 11489 (ServerType -> GetMonitoredItems)
FIXME: Provide a namespace 0 independant example on the server side
*/
UA_Variant input;
UA_String argString = UA_STRING("Hello Server");
UA_Variant_init(&input);
UA_Variant_setScalarCopy(&input, &argString, &UA_TYPES[UA_TYPES_STRING]);
UA_Int32 outputSize;
UA_Variant *output;
retval = UA_Client_CallServerMethod(client, UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(1, 62541), 1, &input, &outputSize, &output);
if(retval == UA_STATUSCODE_GOOD) {
printf("Method call was successfull, and %i returned values available.\n", outputSize);
UA_Array_delete(output, &UA_TYPES[UA_TYPES_VARIANT], outputSize);
} else {
printf("Method call was unsuccessfull, and %x returned values available.\n", retval);
}
UA_Variant_deleteMembers(&input);
#endif
#ifdef ENABLE_ADDNODES
/* Create a new object type node */
// New ReferenceType
UA_AddNodesResponse *adResp = UA_Client_createReferenceTypeNode(client,
UA_EXPANDEDNODEID_NUMERIC(1, 12133), // Assign this NodeId (will fail if client is called multiple times)
UA_QUALIFIEDNAME(0, "NewReference"),
UA_LOCALIZEDTEXT("en_US", "TheNewReference"),
UA_LOCALIZEDTEXT("en_US", "References something that might or might not exist."),
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
(UA_UInt32) 0, (UA_UInt32) 0,
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_LOCALIZEDTEXT("en_US", "IsNewlyReferencedBy"));
if (adResp->resultsSize > 0 && adResp->results[0].statusCode == UA_STATUSCODE_GOOD ) {
printf("Created 'NewReference' with numeric NodeID %u\n", adResp->results[0].addedNodeId.identifier.numeric );
}
UA_AddNodesResponse_deleteMembers(adResp);
free(adResp);
// New ObjectType
adResp = UA_Client_createObjectTypeNode(client,
UA_EXPANDEDNODEID_NUMERIC(1, 12134), // Assign this NodeId (will fail if client is called multiple times)
UA_QUALIFIEDNAME(0, "NewObjectType"),
UA_LOCALIZEDTEXT("en_US", "TheNewObjectType"),
UA_LOCALIZEDTEXT("en_US", "Put innovative description here."),
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
(UA_UInt32) 0, (UA_UInt32) 0,
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER));
if (adResp->resultsSize > 0 && adResp->results[0].statusCode == UA_STATUSCODE_GOOD ) {
printf("Created 'NewObjectType' with numeric NodeID %u\n", adResp->results[0].addedNodeId.identifier.numeric );
}
// New Object
adResp = UA_Client_createObjectNode(client,
UA_EXPANDEDNODEID_NUMERIC(1, 0), // Assign new/random NodeID
UA_QUALIFIEDNAME(0, "TheNewGreatNodeBrowseName"),
UA_LOCALIZEDTEXT("en_US", "TheNewGreatNode"),
UA_LOCALIZEDTEXT("de_DE", "Hier koennte Ihre Webung stehen!"),
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
(UA_UInt32) 0, (UA_UInt32) 0,
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER));
if (adResp->resultsSize > 0 && adResp->results[0].statusCode == UA_STATUSCODE_GOOD ) {
printf("Created 'NewObject' with numeric NodeID %u\n", adResp->results[0].addedNodeId.identifier.numeric );
}
UA_AddNodesResponse_deleteMembers(adResp);
free(adResp);
// New Integer Variable
UA_Variant *theValue = UA_Variant_new();
UA_Int32 *theValueDate = UA_Int32_new();
*theValueDate = 1234;
theValue->type = &UA_TYPES[UA_TYPES_INT32];
theValue->data = theValueDate;
adResp = UA_Client_createVariableNode(client,
UA_EXPANDEDNODEID_NUMERIC(1, 0), // Assign new/random NodeID
UA_QUALIFIEDNAME(0, "VariableNode"),
UA_LOCALIZEDTEXT("en_US", "TheNewVariableNode"),
UA_LOCALIZEDTEXT("en_US", "This integer is just amazing - it has digits and everything."),
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
(UA_UInt32) 0, (UA_UInt32) 0,
UA_EXPANDEDNODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_INT32),
theValue);
if (adResp->resultsSize > 0 && adResp->results[0].statusCode == UA_STATUSCODE_GOOD ) {
printf("Created 'NewVariable' with numeric NodeID %u\n", adResp->results[0].addedNodeId.identifier.numeric );
}
UA_AddNodesResponse_deleteMembers(adResp);
free(adResp);
free(theValue);
/* Done creating a new node*/
#endif
UA_Client_disconnect(client);
UA_Client_delete(client);
return UA_STATUSCODE_GOOD;
}
int main(int argc, char *argv[]) {
UA_Client *client = UA_Client_new(UA_ClientConfig_standard);
//listing endpoints
UA_EndpointDescription* endpointArray = NULL;
size_t endpointArraySize = 0;
UA_StatusCode retval =
UA_Client_getEndpoints(client, "opc.tcp://localhost:16664",
&endpointArraySize, &endpointArray);
//freeing the endpointArray
if(retval != UA_STATUSCODE_GOOD) {
//cleanup array
UA_Array_delete(endpointArray,endpointArraySize, &UA_TYPES[UA_TYPES_ENDPOINTDESCRIPTION]);
UA_Client_delete(client);
return (int)retval;
}
printf("%i endpoints found\n", (int)endpointArraySize);
for(size_t i=0;i<endpointArraySize;i++){
printf("URL of endpoint %i is %.*s\n", (int)i, (int)endpointArray[i].endpointUrl.length, endpointArray[i].endpointUrl.data);
}
//cleanup array of enpoints
UA_Array_delete(endpointArray,endpointArraySize, &UA_TYPES[UA_TYPES_ENDPOINTDESCRIPTION]);
//connect to a server
//anonymous connect would be: retval = UA_Client_connect_username(client, UA_ClientConnectionTCP, "opc.tcp://localhost:16664");
retval = UA_Client_connect_username(client, "opc.tcp://localhost:16664", "user1", "password");
if(retval != UA_STATUSCODE_GOOD) {
UA_Client_delete(client);
return (int)retval;
}
// Browse some objects
printf("Browsing nodes in objects folder:\n");
UA_BrowseRequest bReq;
UA_BrowseRequest_init(&bReq);
bReq.requestedMaxReferencesPerNode = 0;
bReq.nodesToBrowse = UA_BrowseDescription_new();
bReq.nodesToBrowseSize = 1;
bReq.nodesToBrowse[0].nodeId = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER); //browse objects folder
bReq.nodesToBrowse[0].resultMask = UA_BROWSERESULTMASK_ALL; //return everything
UA_BrowseResponse bResp = UA_Client_Service_browse(client, bReq);
printf("%-9s %-16s %-16s %-16s\n", "NAMESPACE", "NODEID", "BROWSE NAME", "DISPLAY NAME");
for (size_t i = 0; i < bResp.resultsSize; ++i) {
for (size_t j = 0; j < bResp.results[i].referencesSize; ++j) {
UA_ReferenceDescription *ref = &(bResp.results[i].references[j]);
if(ref->nodeId.nodeId.identifierType == UA_NODEIDTYPE_NUMERIC) {
printf("%-9d %-16d %-16.*s %-16.*s\n", ref->browseName.namespaceIndex,
ref->nodeId.nodeId.identifier.numeric, (int)ref->browseName.name.length,
ref->browseName.name.data, (int)ref->displayName.text.length,
ref->displayName.text.data);
} else if(ref->nodeId.nodeId.identifierType == UA_NODEIDTYPE_STRING) {
printf("%-9d %-16.*s %-16.*s %-16.*s\n", ref->browseName.namespaceIndex,
(int)ref->nodeId.nodeId.identifier.string.length, ref->nodeId.nodeId.identifier.string.data,
(int)ref->browseName.name.length, ref->browseName.name.data,
(int)ref->displayName.text.length, ref->displayName.text.data);
}
//TODO: distinguish further types
}
}
UA_BrowseRequest_deleteMembers(&bReq);
UA_BrowseResponse_deleteMembers(&bResp);
// Same thing, this time using the node iterator...
UA_NodeId *parent = UA_NodeId_new();
*parent = UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER);
UA_Client_forEachChildNodeCall(client, UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER), nodeIter, (void *) parent);
UA_NodeId_delete(parent);
#ifdef UA_ENABLE_SUBSCRIPTIONS
// Create a subscription with interval 0 (immediate)...
UA_UInt32 subId=0;
UA_Client_Subscriptions_new(client, UA_SubscriptionSettings_standard, &subId);
if(subId)
printf("Create subscription succeeded, id %u\n", subId);
// .. and monitor TheAnswer
UA_NodeId monitorThis = UA_NODEID_STRING(1, "the.answer");
UA_UInt32 monId=0;
UA_Client_Subscriptions_addMonitoredItem(client, subId, monitorThis,
UA_ATTRIBUTEID_VALUE, &handler_TheAnswerChanged, NULL, &monId);
if (monId)
printf("Monitoring 'the.answer', id %u\n", subId);
// First Publish always generates data (current value) and call out handler.
UA_Client_Subscriptions_manuallySendPublishRequest(client);
// This should not generate anything
UA_Client_Subscriptions_manuallySendPublishRequest(client);
#endif
UA_Int32 value = 0;
// Read node's value
printf("\nReading the value of node (1, \"the.answer\"):\n");
UA_ReadRequest rReq;
UA_ReadRequest_init(&rReq);
rReq.nodesToRead = UA_Array_new(1, &UA_TYPES[UA_TYPES_READVALUEID]);
rReq.nodesToReadSize = 1;
rReq.nodesToRead[0].nodeId = UA_NODEID_STRING_ALLOC(1, "the.answer"); /* assume this node exists */
rReq.nodesToRead[0].attributeId = UA_ATTRIBUTEID_VALUE;
UA_ReadResponse rResp = UA_Client_Service_read(client, rReq);
if(rResp.responseHeader.serviceResult == UA_STATUSCODE_GOOD &&
rResp.resultsSize > 0 && rResp.results[0].hasValue &&
UA_Variant_isScalar(&rResp.results[0].value) &&
rResp.results[0].value.type == &UA_TYPES[UA_TYPES_INT32]) {
value = *(UA_Int32*)rResp.results[0].value.data;
printf("the value is: %i\n", value);
}
UA_ReadRequest_deleteMembers(&rReq);
UA_ReadResponse_deleteMembers(&rResp);
value++;
// Write node's value
printf("\nWriting a value of node (1, \"the.answer\"):\n");
UA_WriteRequest wReq;
UA_WriteRequest_init(&wReq);
wReq.nodesToWrite = UA_WriteValue_new();
wReq.nodesToWriteSize = 1;
wReq.nodesToWrite[0].nodeId = UA_NODEID_STRING_ALLOC(1, "the.answer"); /* assume this node exists */
wReq.nodesToWrite[0].attributeId = UA_ATTRIBUTEID_VALUE;
wReq.nodesToWrite[0].value.hasValue = true;
wReq.nodesToWrite[0].value.value.type = &UA_TYPES[UA_TYPES_INT32];
wReq.nodesToWrite[0].value.value.storageType = UA_VARIANT_DATA_NODELETE; //do not free the integer on deletion
wReq.nodesToWrite[0].value.value.data = &value;
UA_WriteResponse wResp = UA_Client_Service_write(client, wReq);
if(wResp.responseHeader.serviceResult == UA_STATUSCODE_GOOD)
printf("the new value is: %i\n", value);
UA_WriteRequest_deleteMembers(&wReq);
UA_WriteResponse_deleteMembers(&wResp);
// Alternate Form, this time using the hl API
value++;
UA_Variant *myVariant = UA_Variant_new();
UA_Variant_setScalarCopy(myVariant, &value, &UA_TYPES[UA_TYPES_INT32]);
UA_Client_writeValueAttribute(client, UA_NODEID_STRING(1, "the.answer"), myVariant);
UA_Variant_delete(myVariant);
#ifdef UA_ENABLE_SUBSCRIPTIONS
// Take another look at the.answer... this should call the handler.
UA_Client_Subscriptions_manuallySendPublishRequest(client);
// Delete our subscription (which also unmonitors all items)
if(!UA_Client_Subscriptions_remove(client, subId))
printf("Subscription removed\n");
#endif
#ifdef UA_ENABLE_METHODCALLS
/* Note: This example requires Namespace 0 Node 11489 (ServerType -> GetMonitoredItems)
FIXME: Provide a namespace 0 independant example on the server side
*/
UA_Variant input;
UA_String argString = UA_STRING("Hello Server");
UA_Variant_init(&input);
UA_Variant_setScalarCopy(&input, &argString, &UA_TYPES[UA_TYPES_STRING]);
size_t outputSize;
UA_Variant *output;
retval = UA_Client_call(client, UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(1, 62541), 1, &input, &outputSize, &output);
if(retval == UA_STATUSCODE_GOOD) {
printf("Method call was successfull, and %lu returned values available.\n",
(unsigned long)outputSize);
UA_Array_delete(output, outputSize, &UA_TYPES[UA_TYPES_VARIANT]);
} else {
printf("Method call was unsuccessfull, and %x returned values available.\n", retval);
}
UA_Variant_deleteMembers(&input);
#endif
#ifdef UA_ENABLE_NODEMANAGEMENT
/* New ReferenceType */
UA_NodeId ref_id;
UA_ReferenceTypeAttributes ref_attr;
UA_ReferenceTypeAttributes_init(&ref_attr);
ref_attr.displayName = UA_LOCALIZEDTEXT("en_US", "NewReference");
ref_attr.description = UA_LOCALIZEDTEXT("en_US", "References something that might or might not exist");
ref_attr.inverseName = UA_LOCALIZEDTEXT("en_US", "IsNewlyReferencedBy");
retval = UA_Client_addReferenceTypeNode(client,
UA_NODEID_NUMERIC(1, 12133),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASSUBTYPE),
UA_QUALIFIEDNAME(1, "NewReference"),
ref_attr, &ref_id);
if(retval == UA_STATUSCODE_GOOD )
printf("Created 'NewReference' with numeric NodeID %u\n", ref_id.identifier.numeric);
/* New ObjectType */
UA_NodeId objt_id;
UA_ObjectTypeAttributes objt_attr;
UA_ObjectTypeAttributes_init(&objt_attr);
objt_attr.displayName = UA_LOCALIZEDTEXT("en_US", "TheNewObjectType");
objt_attr.description = UA_LOCALIZEDTEXT("en_US", "Put innovative description here");
retval = UA_Client_addObjectTypeNode(client,
UA_NODEID_NUMERIC(1, 12134),
UA_NODEID_NUMERIC(0, UA_NS0ID_BASEOBJECTTYPE),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(1, "NewObjectType"),
objt_attr, &objt_id);
if(retval == UA_STATUSCODE_GOOD)
printf("Created 'NewObjectType' with numeric NodeID %u\n", objt_id.identifier.numeric);
/* New Object */
UA_NodeId obj_id;
UA_ObjectAttributes obj_attr;
UA_ObjectAttributes_init(&obj_attr);
obj_attr.displayName = UA_LOCALIZEDTEXT("en_US", "TheNewGreatNode");
obj_attr.description = UA_LOCALIZEDTEXT("de_DE", "Hier koennte Ihre Webung stehen!");
retval = UA_Client_addObjectNode(client,
UA_NODEID_NUMERIC(1, 0),
UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(1, "TheGreatNode"),
UA_NODEID_NUMERIC(1, 12134),
obj_attr, &obj_id);
if(retval == UA_STATUSCODE_GOOD )
printf("Created 'NewObject' with numeric NodeID %u\n", obj_id.identifier.numeric);
/* New Integer Variable */
UA_NodeId var_id;
UA_VariableAttributes var_attr;
UA_VariableAttributes_init(&var_attr);
var_attr.displayName = UA_LOCALIZEDTEXT("en_US", "TheNewVariableNode");
var_attr.description =
UA_LOCALIZEDTEXT("en_US", "This integer is just amazing - it has digits and everything.");
UA_Int32 int_value = 1234;
/* This does not copy the value */
UA_Variant_setScalar(&var_attr.value, &int_value, &UA_TYPES[UA_TYPES_INT32]);
var_attr.dataType = UA_TYPES[UA_TYPES_INT32].typeId;
retval = UA_Client_addVariableNode(client,
UA_NODEID_NUMERIC(1, 0), // Assign new/random NodeID
UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(0, "VariableNode"),
UA_NODEID_NULL, // no variable type
var_attr, &var_id);
if(retval == UA_STATUSCODE_GOOD )
printf("Created 'NewVariable' with numeric NodeID %u\n", var_id.identifier.numeric);
#endif
UA_Client_disconnect(client);
UA_Client_delete(client);
return (int) UA_STATUSCODE_GOOD;
}
/* movedValue returns whether the sample was moved to the notification. The
* default is false. */
static UA_StatusCode
sampleCallbackWithValue(UA_Server *server, UA_Session *session,
UA_Subscription *sub, UA_MonitoredItem *mon,
UA_DataValue *value, UA_Boolean *movedValue) {
UA_assert(mon->attributeId != UA_ATTRIBUTEID_EVENTNOTIFIER);
/* Contains heap-allocated binary encoding of the value if a change was detected */
UA_ByteString binValueEncoding = UA_BYTESTRING_NULL;
/* Has the value changed? Allocates memory in binValueEncoding if necessary.
* value is edited internally so we make a shallow copy. */
UA_Boolean changed = false;
UA_StatusCode retval = detectValueChange(server, mon, *value, &binValueEncoding, &changed);
if(retval != UA_STATUSCODE_GOOD) {
UA_LOG_WARNING_SESSION(&server->config.logger, session, "Subscription %u | "
"MonitoredItem %i | Value change detection failed with StatusCode %s",
sub ? sub->subscriptionId : 0, mon->monitoredItemId,
UA_StatusCode_name(retval));
return retval;
}
if(!changed) {
UA_LOG_DEBUG_SESSION(&server->config.logger, session, "Subscription %u | "
"MonitoredItem %i | The value has not changed",
sub ? sub->subscriptionId : 0, mon->monitoredItemId);
return UA_STATUSCODE_GOOD;
}
/* The MonitoredItem is attached to a subscription (not server-local).
* Prepare a notification and enqueue it. */
if(sub) {
/* Allocate a new notification */
UA_Notification *newNotification = (UA_Notification *)UA_malloc(sizeof(UA_Notification));
if(!newNotification) {
UA_ByteString_deleteMembers(&binValueEncoding);
return UA_STATUSCODE_BADOUTOFMEMORY;
}
if(value->value.storageType == UA_VARIANT_DATA) {
newNotification->data.value = *value; /* Move the value to the notification */
*movedValue = true;
} else { /* => (value->value.storageType == UA_VARIANT_DATA_NODELETE) */
retval = UA_DataValue_copy(value, &newNotification->data.value);
if(retval != UA_STATUSCODE_GOOD) {
UA_ByteString_deleteMembers(&binValueEncoding);
UA_free(newNotification);
return retval;
}
}
/* <-- Point of no return --> */
UA_LOG_DEBUG_SESSION(&server->config.logger, session, "Subscription %u | "
"MonitoredItem %i | Enqueue a new notification",
sub ? sub->subscriptionId : 0, mon->monitoredItemId);
newNotification->mon = mon;
UA_Notification_enqueue(server, sub, mon, newNotification);
}
/* Store the encoding for comparison */
UA_ByteString_deleteMembers(&mon->lastSampledValue);
mon->lastSampledValue = binValueEncoding;
/* Store the value for filter comparison (we don't want to decode
* lastSampledValue in every iteration). Don't test the return code here. If
* this fails, lastValue is empty and a notification will be forced for the
* next deadband comparison. */
if((mon->filter.dataChangeFilter.deadbandType == UA_DEADBANDTYPE_NONE ||
mon->filter.dataChangeFilter.deadbandType == UA_DEADBANDTYPE_ABSOLUTE ||
mon->filter.dataChangeFilter.deadbandType == UA_DEADBANDTYPE_PERCENT) &&
(mon->filter.dataChangeFilter.trigger == UA_DATACHANGETRIGGER_STATUS ||
mon->filter.dataChangeFilter.trigger == UA_DATACHANGETRIGGER_STATUSVALUE ||
mon->filter.dataChangeFilter.trigger == UA_DATACHANGETRIGGER_STATUSVALUETIMESTAMP)) {
UA_Variant_deleteMembers(&mon->lastValue);
UA_Variant_copy(&value->value, &mon->lastValue);
#ifdef UA_ENABLE_DA
UA_StatusCode_deleteMembers(&mon->lastStatus);
UA_StatusCode_copy(&value->status, &mon->lastStatus);
#endif
}
/* Call the local callback if the MonitoredItem is not attached to a
* subscription. Do this at the very end. Because the callback might delete
* the subscription. */
if(!sub) {
UA_LocalMonitoredItem *localMon = (UA_LocalMonitoredItem*) mon;
void *nodeContext = NULL;
UA_Server_getNodeContext(server, mon->monitoredNodeId, &nodeContext);
localMon->callback.dataChangeCallback(server, mon->monitoredItemId,
localMon->context,
&mon->monitoredNodeId,
nodeContext, mon->attributeId,
value);
}
return UA_STATUSCODE_GOOD;
}
void UA_VariableTypeNode_deleteMembers(UA_VariableTypeNode *p) {
UA_Node_deleteMembers((UA_Node*)p);
if(p->valueSource == UA_VALUESOURCE_VARIANT)
UA_Variant_deleteMembers(&p->value.variant.value);
}
int
main(int argc, char **argv) {
signal(SIGINT, stopHandler); /* catches ctrl-c */
signal(SIGTERM, stopHandler);
#ifdef UA_ENABLE_ENCRYPTION
if(argc < 3) {
UA_LOG_FATAL(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND,
"Missing arguments for encryption support. "
"Arguments are <server-certificate.der> "
"<private-key.der> [<trustlist1.crl>, ...]");
return 1;
}
/* Load certificate and private key */
UA_ByteString certificate = loadFile(argv[1]);
UA_ByteString privateKey = loadFile(argv[2]);
/* Load the trustlist */
size_t trustListSize = 0;
if(argc > 3)
trustListSize = (size_t)argc-3;
UA_STACKARRAY(UA_ByteString, trustList, trustListSize);
for(size_t i = 0; i < trustListSize; i++)
trustList[i] = loadFile(argv[i+3]);
/* Loading of a revocation list currently unsupported */
UA_ByteString *revocationList = NULL;
size_t revocationListSize = 0;
UA_ServerConfig *config =
UA_ServerConfig_new_allSecurityPolicies(4840, &certificate, &privateKey,
trustList, trustListSize,
revocationList, revocationListSize);
UA_ByteString_deleteMembers(&certificate);
UA_ByteString_deleteMembers(&privateKey);
for(size_t i = 0; i < trustListSize; i++)
UA_ByteString_deleteMembers(&trustList[i]);
if(!config) {
UA_LOG_FATAL(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND,
"Could not create the server config");
return 1;
}
#else
if(argc < 2) {
UA_LOG_FATAL(UA_Log_Stdout, UA_LOGCATEGORY_USERLAND,
"Missing argument for the server certificate");
return 1;
}
UA_ByteString certificate = loadFile(argv[1]);
UA_ServerConfig *config = UA_ServerConfig_new_minimal(4840, &certificate);
UA_ByteString_deleteMembers(&certificate);
#endif
/* uncomment next line to add a custom hostname */
// UA_ServerConfig_set_customHostname(config, UA_STRING("custom"));
UA_Server *server = UA_Server_new(config);
if(server == NULL)
return 1;
/* add a static variable node to the server */
UA_VariableAttributes myVar = UA_VariableAttributes_default;
myVar.description = UA_LOCALIZEDTEXT("en-US", "the answer");
myVar.displayName = UA_LOCALIZEDTEXT("en-US", "the answer");
myVar.accessLevel = UA_ACCESSLEVELMASK_READ | UA_ACCESSLEVELMASK_WRITE;
myVar.dataType = UA_TYPES[UA_TYPES_INT32].typeId;
myVar.valueRank = -1;
UA_Int32 myInteger = 42;
UA_Variant_setScalarCopy(&myVar.value, &myInteger, &UA_TYPES[UA_TYPES_INT32]);
const UA_QualifiedName myIntegerName = UA_QUALIFIEDNAME(1, "the answer");
const UA_NodeId myIntegerNodeId = UA_NODEID_STRING(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, baseDataVariableType, myVar, NULL, NULL);
UA_Variant_deleteMembers(&myVar.value);
/* add a static variable that is readable but not writable*/
myVar = UA_VariableAttributes_default;
myVar.description = UA_LOCALIZEDTEXT("en-US", "the answer - not readable");
myVar.displayName = UA_LOCALIZEDTEXT("en-US", "the answer - not readable");
myVar.accessLevel = UA_ACCESSLEVELMASK_WRITE;
myVar.dataType = UA_TYPES[UA_TYPES_INT32].typeId;
myVar.valueRank = -1;
UA_Variant_setScalarCopy(&myVar.value, &myInteger, &UA_TYPES[UA_TYPES_INT32]);
const UA_QualifiedName myInteger2Name = UA_QUALIFIEDNAME(1, "the answer - not readable");
const UA_NodeId myInteger2NodeId = UA_NODEID_STRING(1, "the.answer.no.read");
UA_Server_addVariableNode(server, myInteger2NodeId, parentNodeId, parentReferenceNodeId,
myInteger2Name, baseDataVariableType, myVar, NULL, NULL);
UA_Variant_deleteMembers(&myVar.value);
/* add a variable with the datetime data source */
UA_DataSource dateDataSource;
dateDataSource.read = readTimeData;
dateDataSource.write = NULL;
UA_VariableAttributes v_attr = UA_VariableAttributes_default;
v_attr.description = UA_LOCALIZEDTEXT("en-US", "current time");
v_attr.displayName = UA_LOCALIZEDTEXT("en-US", "current time");
v_attr.accessLevel = UA_ACCESSLEVELMASK_READ;
v_attr.dataType = UA_TYPES[UA_TYPES_DATETIME].typeId;
v_attr.valueRank = -1;
const UA_QualifiedName dateName = UA_QUALIFIEDNAME(1, "current time");
UA_Server_addDataSourceVariableNode(server, UA_NODEID_NULL, UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), dateName,
baseDataVariableType, v_attr, dateDataSource, NULL, NULL);
/* Add HelloWorld method to the server */
#ifdef UA_ENABLE_METHODCALLS
/* Method with IO Arguments */
UA_Argument inputArguments;
UA_Argument_init(&inputArguments);
inputArguments.dataType = UA_TYPES[UA_TYPES_STRING].typeId;
inputArguments.description = UA_LOCALIZEDTEXT("en-US", "Say your name");
inputArguments.name = UA_STRING("Name");
inputArguments.valueRank = -1; /* scalar argument */
UA_Argument outputArguments;
UA_Argument_init(&outputArguments);
outputArguments.arrayDimensionsSize = 0;
outputArguments.arrayDimensions = NULL;
outputArguments.dataType = UA_TYPES[UA_TYPES_STRING].typeId;
outputArguments.description = UA_LOCALIZEDTEXT("en-US", "Receive a greeting");
outputArguments.name = UA_STRING("greeting");
outputArguments.valueRank = -1;
UA_MethodAttributes addmethodattributes = UA_MethodAttributes_default;
addmethodattributes.displayName = UA_LOCALIZEDTEXT("en-US", "Hello World");
addmethodattributes.executable = true;
addmethodattributes.userExecutable = true;
UA_Server_addMethodNode(server, UA_NODEID_NUMERIC(1, 62541),
UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "hello_world"), addmethodattributes,
&helloWorld, /* callback of the method node */
1, &inputArguments, 1, &outputArguments, NULL, NULL);
#endif
/* Add folders for demo information model */
#define DEMOID 50000
#define SCALARID 50001
#define ARRAYID 50002
#define MATRIXID 50003
#define DEPTHID 50004
UA_ObjectAttributes object_attr = UA_ObjectAttributes_default;
object_attr.description = UA_LOCALIZEDTEXT("en-US", "Demo");
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", "Demo");
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), UA_QUALIFIEDNAME(1, "Demo"),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
object_attr.description = UA_LOCALIZEDTEXT("en-US", "Scalar");
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", "Scalar");
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, SCALARID),
UA_NODEID_NUMERIC(1, DEMOID), UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(1, "Scalar"),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
object_attr.description = UA_LOCALIZEDTEXT("en-US", "Array");
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", "Array");
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, ARRAYID),
UA_NODEID_NUMERIC(1, DEMOID), UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(1, "Array"),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
object_attr.description = UA_LOCALIZEDTEXT("en-US", "Matrix");
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", "Matrix");
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, MATRIXID), UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), UA_QUALIFIEDNAME(1, "Matrix"),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
/* Fill demo nodes for each type*/
UA_UInt32 id = 51000; // running id in namespace 0
for(UA_UInt32 type = 0; type < UA_TYPES_DIAGNOSTICINFO; type++) {
if(type == UA_TYPES_VARIANT || type == UA_TYPES_DIAGNOSTICINFO)
continue;
UA_VariableAttributes attr = UA_VariableAttributes_default;
attr.valueRank = -2;
attr.dataType = UA_TYPES[type].typeId;
#ifndef UA_ENABLE_TYPENAMES
char name[15];
#if defined(_WIN32) && !defined(__MINGW32__)
sprintf_s(name, 15, "%02d", type);
#else
sprintf(name, "%02d", type);
#endif
attr.displayName = UA_LOCALIZEDTEXT("en-US", name);
UA_QualifiedName qualifiedName = UA_QUALIFIEDNAME(1, name);
#else
attr.displayName = UA_LOCALIZEDTEXT_ALLOC("en-US", UA_TYPES[type].typeName);
UA_QualifiedName qualifiedName = UA_QUALIFIEDNAME_ALLOC(1, UA_TYPES[type].typeName);
#endif
attr.accessLevel = UA_ACCESSLEVELMASK_READ | UA_ACCESSLEVELMASK_WRITE;
attr.writeMask = UA_WRITEMASK_DISPLAYNAME | UA_WRITEMASK_DESCRIPTION;
attr.userWriteMask = UA_WRITEMASK_DISPLAYNAME | UA_WRITEMASK_DESCRIPTION;
/* add a scalar node for every built-in type */
void *value = UA_new(&UA_TYPES[type]);
UA_Variant_setScalar(&attr.value, value, &UA_TYPES[type]);
UA_Server_addVariableNode(server, UA_NODEID_NUMERIC(1, ++id),
UA_NODEID_NUMERIC(1, SCALARID), UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
qualifiedName, baseDataVariableType, attr, NULL, NULL);
UA_Variant_deleteMembers(&attr.value);
/* add an array node for every built-in type */
UA_Variant_setArray(&attr.value, UA_Array_new(10, &UA_TYPES[type]), 10, &UA_TYPES[type]);
UA_Server_addVariableNode(server, UA_NODEID_NUMERIC(1, ++id), UA_NODEID_NUMERIC(1, ARRAYID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), qualifiedName,
baseDataVariableType, attr, NULL, NULL);
UA_Variant_deleteMembers(&attr.value);
/* add an matrix node for every built-in type */
void *myMultiArray = UA_Array_new(9, &UA_TYPES[type]);
attr.value.arrayDimensions = (UA_UInt32 *)UA_Array_new(2, &UA_TYPES[UA_TYPES_INT32]);
attr.value.arrayDimensions[0] = 3;
attr.value.arrayDimensions[1] = 3;
attr.value.arrayDimensionsSize = 2;
attr.value.arrayLength = 9;
attr.value.data = myMultiArray;
attr.value.type = &UA_TYPES[type];
UA_Server_addVariableNode(server, UA_NODEID_NUMERIC(1, ++id), UA_NODEID_NUMERIC(1, MATRIXID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), qualifiedName,
baseDataVariableType, attr, NULL, NULL);
UA_Variant_deleteMembers(&attr.value);
#ifdef UA_ENABLE_TYPENAMES
UA_LocalizedText_deleteMembers(&attr.displayName);
UA_QualifiedName_deleteMembers(&qualifiedName);
#endif
}
/* Hierarchy of depth 10 for CTT testing with forward and inverse references */
/* Enter node "depth 9" in CTT configuration - Project->Settings->Server
Test->NodeIds->Paths->Starting Node 1 */
object_attr.description = UA_LOCALIZEDTEXT("en-US", "DepthDemo");
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", "DepthDemo");
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, DEPTHID), UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), UA_QUALIFIEDNAME(1, "DepthDemo"),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
id = DEPTHID; // running id in namespace 0 - Start with Matrix NODE
for(UA_UInt32 i = 1; i <= 20; i++) {
char name[15];
#if defined(_WIN32) && !defined(__MINGW32__)
sprintf_s(name, 15, "depth%i", i);
#else
sprintf(name, "depth%i", i);
#endif
object_attr.description = UA_LOCALIZEDTEXT("en-US", name);
object_attr.displayName = UA_LOCALIZEDTEXT("en-US", name);
UA_Server_addObjectNode(server, UA_NODEID_NUMERIC(1, id + i),
UA_NODEID_NUMERIC(1, i == 1 ? DEPTHID : id + i - 1),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES),
UA_QUALIFIEDNAME(1, name),
UA_NODEID_NUMERIC(0, UA_NS0ID_FOLDERTYPE), object_attr, NULL, NULL);
}
/* Add the variable to some more places to get a node with three inverse references for the CTT */
UA_ExpandedNodeId answer_nodeid = UA_EXPANDEDNODEID_STRING(1, "the.answer");
UA_Server_addReference(server, UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), answer_nodeid, true);
UA_Server_addReference(server, UA_NODEID_NUMERIC(1, SCALARID),
UA_NODEID_NUMERIC(0, UA_NS0ID_ORGANIZES), answer_nodeid, true);
/* Example for manually setting an attribute within the server */
UA_LocalizedText objectsName = UA_LOCALIZEDTEXT("en-US", "Objects");
UA_Server_writeDisplayName(server, UA_NODEID_NUMERIC(0, UA_NS0ID_OBJECTSFOLDER), objectsName);
#define NOARGID 60000
#define INARGID 60001
#define OUTARGID 60002
#define INOUTARGID 60003
#ifdef UA_ENABLE_METHODCALLS
/* adding some more method nodes to pass CTT */
/* Method without arguments */
addmethodattributes = UA_MethodAttributes_default;
addmethodattributes.displayName = UA_LOCALIZEDTEXT("en-US", "noarg");
addmethodattributes.executable = true;
addmethodattributes.userExecutable = true;
UA_Server_addMethodNode(server, UA_NODEID_NUMERIC(1, NOARGID),
UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "noarg"), addmethodattributes,
&noargMethod, /* callback of the method node */
0, NULL, 0, NULL, NULL, NULL);
/* Method with in arguments */
addmethodattributes = UA_MethodAttributes_default;
addmethodattributes.displayName = UA_LOCALIZEDTEXT("en-US", "inarg");
addmethodattributes.executable = true;
addmethodattributes.userExecutable = true;
UA_Argument_init(&inputArguments);
inputArguments.dataType = UA_TYPES[UA_TYPES_INT32].typeId;
inputArguments.description = UA_LOCALIZEDTEXT("en-US", "Input");
inputArguments.name = UA_STRING("Input");
inputArguments.valueRank = -1; //uaexpert will crash if set to 0 ;)
UA_Server_addMethodNode(server, UA_NODEID_NUMERIC(1, INARGID),
UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "noarg"), addmethodattributes,
&noargMethod, /* callback of the method node */
1, &inputArguments, 0, NULL, NULL, NULL);
/* Method with out arguments */
addmethodattributes = UA_MethodAttributes_default;
addmethodattributes.displayName = UA_LOCALIZEDTEXT("en-US", "outarg");
addmethodattributes.executable = true;
addmethodattributes.userExecutable = true;
UA_Argument_init(&outputArguments);
outputArguments.dataType = UA_TYPES[UA_TYPES_INT32].typeId;
outputArguments.description = UA_LOCALIZEDTEXT("en-US", "Output");
outputArguments.name = UA_STRING("Output");
outputArguments.valueRank = -1;
UA_Server_addMethodNode(server, UA_NODEID_NUMERIC(1, OUTARGID),
UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "outarg"), addmethodattributes,
&outargMethod, /* callback of the method node */
0, NULL, 1, &outputArguments, NULL, NULL);
/* Method with inout arguments */
addmethodattributes = UA_MethodAttributes_default;
addmethodattributes.displayName = UA_LOCALIZEDTEXT("en-US", "inoutarg");
addmethodattributes.executable = true;
addmethodattributes.userExecutable = true;
UA_Server_addMethodNode(server, UA_NODEID_NUMERIC(1, INOUTARGID),
UA_NODEID_NUMERIC(1, DEMOID),
UA_NODEID_NUMERIC(0, UA_NS0ID_HASCOMPONENT),
UA_QUALIFIEDNAME(1, "inoutarg"), addmethodattributes,
&outargMethod, /* callback of the method node */
1, &inputArguments, 1, &outputArguments, NULL, NULL);
#endif
/* run server */
UA_StatusCode retval = UA_Server_run(server, &running);
UA_Server_delete(server);
UA_ServerConfig_delete(config);
return (int)retval;
}
static UA_StatusCode
setMonitoredItemSettings(UA_Server *server, UA_MonitoredItem *mon,
UA_MonitoringMode monitoringMode,
const UA_MonitoringParameters *params,
const UA_DataType* dataType) {
/* Filter */
if(params->filter.encoding != UA_EXTENSIONOBJECT_DECODED) {
UA_DataChangeFilter_init(&(mon->filter.dataChangeFilter));
mon->filter.dataChangeFilter.trigger = UA_DATACHANGETRIGGER_STATUSVALUE;
} else if(params->filter.content.decoded.type == &UA_TYPES[UA_TYPES_DATACHANGEFILTER]) {
UA_DataChangeFilter *filter = (UA_DataChangeFilter *)params->filter.content.decoded.data;
// TODO implement EURange to support UA_DEADBANDTYPE_PERCENT
switch(filter->deadbandType) {
case UA_DEADBANDTYPE_NONE:
break;
case UA_DEADBANDTYPE_ABSOLUTE:
if(!dataType || !UA_DataType_isNumeric(dataType))
return UA_STATUSCODE_BADFILTERNOTALLOWED;
break;
case UA_DEADBANDTYPE_PERCENT:
return UA_STATUSCODE_BADMONITOREDITEMFILTERUNSUPPORTED;
default:
return UA_STATUSCODE_BADMONITOREDITEMFILTERUNSUPPORTED;
}
UA_DataChangeFilter_copy(filter, &mon->filter.dataChangeFilter);
#ifdef UA_ENABLE_SUBSCRIPTIONS_EVENTS
} else if (params->filter.content.decoded.type == &UA_TYPES[UA_TYPES_EVENTFILTER]) {
UA_EventFilter_copy((UA_EventFilter *)params->filter.content.decoded.data,
&mon->filter.eventFilter);
#endif
} else {
return UA_STATUSCODE_BADMONITOREDITEMFILTERINVALID;
}
/* <-- The point of no return --> */
/* Unregister the callback */
UA_MonitoredItem_unregisterSampleCallback(server, mon);
/* Remove the old samples */
UA_ByteString_deleteMembers(&mon->lastSampledValue);
UA_Variant_deleteMembers(&mon->lastValue);
/* ClientHandle */
mon->clientHandle = params->clientHandle;
/* SamplingInterval */
UA_Double samplingInterval = params->samplingInterval;
if(mon->attributeId == UA_ATTRIBUTEID_VALUE) {
mon->monitoredItemType = UA_MONITOREDITEMTYPE_CHANGENOTIFY;
const UA_VariableNode *vn = (const UA_VariableNode *)
UA_Nodestore_get(server, &mon->monitoredNodeId);
if(vn) {
if(vn->nodeClass == UA_NODECLASS_VARIABLE &&
samplingInterval < vn->minimumSamplingInterval)
samplingInterval = vn->minimumSamplingInterval;
UA_Nodestore_release(server, (const UA_Node *)vn);
}
} else if(mon->attributeId == UA_ATTRIBUTEID_EVENTNOTIFIER) {
/* TODO: events should not need a samplinginterval */
samplingInterval = 10000.0f; // 10 seconds to reduce the load
mon->monitoredItemType = UA_MONITOREDITEMTYPE_EVENTNOTIFY;
} else {
mon->monitoredItemType = UA_MONITOREDITEMTYPE_CHANGENOTIFY;
}
mon->samplingInterval = samplingInterval;
UA_BOUNDEDVALUE_SETWBOUNDS(server->config.samplingIntervalLimits,
samplingInterval, mon->samplingInterval);
if(samplingInterval != samplingInterval) /* Check for nan */
mon->samplingInterval = server->config.samplingIntervalLimits.min;
UA_assert(mon->monitoredItemType != 0);
/* QueueSize */
UA_BOUNDEDVALUE_SETWBOUNDS(server->config.queueSizeLimits,
params->queueSize, mon->maxQueueSize);
/* DiscardOldest */
mon->discardOldest = params->discardOldest;
/* Register sample callback if reporting is enabled */
mon->monitoringMode = monitoringMode;
if(monitoringMode == UA_MONITORINGMODE_REPORTING)
return UA_MonitoredItem_registerSampleCallback(server, mon);
return UA_STATUSCODE_GOOD;
}
