restoring client.c

examples/client.c

@@ -1,44 +1,240 @@
+#ifdef UA_NO_AMALGAMATION
+# include "ua_types.h"
+# include "ua_client.h"
+# include "ua_nodeids.h"
+# include "networklayer_tcp.h"
+# include "logger_stdout.h"
+# include "ua_types_encoding_binary.h"
+#else
+# include "open62541.h"
+# include <string.h>
+# include <stdlib.h>
+#endif
+
 #include <stdio.h>
 
-#include "ua_types.h"
-#include "ua_server.h"
-#include "logger_stdout.h"
-#include "networklayer_tcp.h"
+void handler_TheAnswerChanged(UA_UInt32 handle, UA_DataValue *value);
+void handler_TheAnswerChanged(UA_UInt32 handle, UA_DataValue *value) {
+    printf("The Answer has changed!\n");
+    return;
+}
+
+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;
 
-int main(void) {
-  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_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 retval;
-  }
-
-  UA_DateTime raw_date = 0;
-  UA_String* string_date = UA_String_new();
-  // Read node's value
-  UA_ReadRequest rReq;
-  UA_ReadRequest_init(&rReq);
-  rReq.nodesToRead = UA_Array_new(&UA_TYPES[UA_TYPES_READVALUEID], 1);
-  rReq.nodesToReadSize = 1;
-  rReq.nodesToRead[0].nodeId = UA_NODEID_NUMERIC(0, 2258);
-  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_DATETIME]) {
-      raw_date = *(UA_DateTime*)rResp.results[0].value.data;
-      printf("raw date is: %llu\n", raw_date);
-      UA_DateTime_toString(raw_date, string_date);
-      printf("string date is: %.*s\n", string_date->length, string_date->data);
-  }
-
-  UA_ReadRequest_deleteMembers(&rReq);
-  UA_ReadResponse_deleteMembers(&rResp);
-  UA_String_delete(string_date);
-
-  UA_Client_disconnect(client);
-  UA_Client_delete(client);
-  return 0;
+    return UA_STATUSCODE_GOOD;
 }
+