private void Recurse(ReferenceDescription referenceDescription, ReferenceDescriptionCollection result) //TODO Rethink this.
{
ReferenceDescriptionCollection referenceDescriptions = session.FetchReferences(ObjectIds.ObjectsFolder);
Byte[] continuationPoint;
session.Browse(
null,
null,
ExpandedNodeId.ToNodeId(referenceDescription.NodeId, session.NamespaceUris),
0u,
BrowseDirection.Forward,
ReferenceTypeIds.HierarchicalReferences,
true,
(uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method,
out continuationPoint,
out referenceDescriptions);
result.AddRange(referenceDescriptions);
Byte[] revisedContinuationPoint;
if (continuationPoint != null)
{
session.BrowseNext(
requestHeader: null,
releaseContinuationPoint: false,
continuationPoint: continuationPoint,
revisedContinuationPoint: out revisedContinuationPoint,
references: out referenceDescriptions);
result.AddRange(referenceDescriptions);
}
//foreach (var rd in referenceDescriptions)
//{
// //Console.WriteLine(space + " + {0}, {1}, {2}, {3}, {4}, {5}", rd.DisplayName, rd.BrowseName, rd.NodeClass, rd.NodeId, rd.ReferenceTypeId, rd.NodeId.IdType);
// if (rd.DisplayName.Text.Contains("_Hint") || rd.NodeClass == NodeClass.Variable)
// continue;
// //Thread.Sleep(500);
// Recurse(rd, result);
//}
//foreach (var rd in rdc)
//{
// if (rd.NodeClass == NodeClass.VariableType || rd.NodeClass == NodeClass.Variable || rd.NodeClass == NodeClass.Object)
// return;
// var r = session.FetchReferences(new NodeId(rd.NodeId.Identifier, rd.NodeId.NamespaceIndex));
// result.AddRange(r);
// if(r.Count != 0)
// Recurse(r, result);
//}
}
public ReferenceDescriptionCollection GetServerTagList()
{
ReferenceDescriptionCollection result = new ReferenceDescriptionCollection();
try
{
ReferenceDescriptionCollection referenceDescriptions = session.FetchReferences(ObjectIds.ObjectsFolder);
ReferenceDescriptionCollection additionalReferenceDescriptions = new ReferenceDescriptionCollection();
result.AddRange(referenceDescriptions);
for (var i = 0; i < referenceDescriptions.Count; i++)
{
try
{
var refDef = FetchReferences(ExpandedNodeId.ToNodeId(referenceDescriptions[i].NodeId, session.NamespaceUris));
foreach (var r in refDef)
{
var item = referenceDescriptions.FirstOrDefault(x => x.NodeId == r.NodeId);
if (item == null)
{
referenceDescriptions.Add(r);
}
additionalReferenceDescriptions.Add(r);
}
}catch (Exception ex)
{
var e = new Exception($"{i}: {referenceDescriptions[i].NodeId}", ex);
e.Data.Add($"{i}", referenceDescriptions[i]);
throw e;
}
//Recurse(rd, result);
}
}
catch (Exception ex)
{
}
return(result);
}
public ResponseHeader Browse(NodeId id, uint mask, out ReferenceDescriptionCollection refs)
{
byte[] continuationPoint;
ResponseHeader resp;
resp = session.Browse(
null,
null,
id,
0u,
BrowseDirection.Forward,
ReferenceTypeIds.HierarchicalReferences,
true,
mask,
out continuationPoint,
out refs);
while (continuationPoint != null)
{
byte[] revisedContinuationPoint;
ReferenceDescriptionCollection additionalDescription;
resp = session.BrowseNext(
null,
false,
continuationPoint,
out revisedContinuationPoint,
out additionalDescription);
continuationPoint = revisedContinuationPoint;
refs.AddRange(additionalDescription);
}
return(resp);
}
/// <summary>
/// Browses the specified node.
/// </summary>
public ReferenceDescriptionCollection Browse(NodeId nodeId)
{
if (m_session == null)
{
throw new ServiceResultException(StatusCodes.BadServerNotConnected, "Cannot browse if not connected to a server.");
}
try
{
m_browseInProgress = true;
// construct request.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = m_browseDirection;
nodeToBrowse.ReferenceTypeId = m_referenceTypeId;
nodeToBrowse.IncludeSubtypes = m_includeSubtypes;
nodeToBrowse.NodeClassMask = m_nodeClassMask;
nodeToBrowse.ResultMask = m_resultMask;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// make the call to the server.
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
ResponseHeader responseHeader = m_session.Browse(
null,
m_view,
m_maxReferencesReturned,
nodesToBrowse,
out results,
out diagnosticInfos);
// ensure that the server returned valid results.
Session.ValidateResponse(results, nodesToBrowse);
Session.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
// check if valid.
if (StatusCode.IsBad(results[0].StatusCode))
{
throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable);
}
// fetch initial set of references.
byte[] continuationPoint = results[0].ContinuationPoint;
ReferenceDescriptionCollection references = results[0].References;
// process any continuation point.
while (continuationPoint != null)
{
ReferenceDescriptionCollection additionalReferences;
if (!m_continueUntilDone && m_MoreReferences != null)
{
BrowserEventArgs args = new BrowserEventArgs(references);
m_MoreReferences(this, args);
// cancel browser and return the references fetched so far.
if (args.Cancel)
{
BrowseNext(ref continuationPoint, true);
return(references);
}
m_continueUntilDone = args.ContinueUntilDone;
}
additionalReferences = BrowseNext(ref continuationPoint, false);
if (additionalReferences != null && additionalReferences.Count > 0)
{
references.AddRange(additionalReferences);
}
else
{
Utils.LogWarning("Browser: Continuation point exists, but the browse results are null/empty.");
break;
}
}
// return the results.
return(references);
}
finally
{
m_browseInProgress = false;
}
}
/// <summary>
/// Browses the address space and returns the references found.
/// </summary>
public static ReferenceDescriptionCollection Browse(Session session, ViewDescription view, BrowseDescriptionCollection nodesToBrowse, bool throwOnError)
{
try
{
ReferenceDescriptionCollection references = new ReferenceDescriptionCollection();
BrowseDescriptionCollection unprocessedOperations = new BrowseDescriptionCollection();
while (nodesToBrowse.Count > 0)
{
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
view,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
// this error indicates that the server does not have enough simultaneously active
// continuation points. This request will need to be resent after the other operations
// have been completed and their continuation points released.
if (results[ii].StatusCode == StatusCodes.BadNoContinuationPoints)
{
unprocessedOperations.Add(nodesToBrowse[ii]);
}
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
references.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
// process continuation points.
ByteStringCollection revisedContiuationPoints = new ByteStringCollection();
while (continuationPoints.Count > 0)
{
// continue browse operation.
session.BrowseNext(
null,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
for (int ii = 0; ii < continuationPoints.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
references.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null)
{
revisedContiuationPoints.Add(results[ii].ContinuationPoint);
}
}
// check if browsing must continue;
revisedContiuationPoints = continuationPoints;
}
// check if unprocessed results exist.
nodesToBrowse = unprocessedOperations;
}
// return complete list.
return(references);
}
catch (Exception exception)
{
if (throwOnError)
{
throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError);
}
return(null);
}
}
/// <summary>
///
/// </summary>
/// <param name="session"></param>
/// <param name="nodesToBrowse"></param>
/// <returns></returns>
public static ReferenceDescriptionCollection BrowsePart(this Session session, BrowseDescriptionCollection nodesToBrowse)
{
try
{
ReferenceDescriptionCollection references = new ReferenceDescriptionCollection();
BrowseDescriptionCollection unprocessedOperations = new BrowseDescriptionCollection();
while (nodesToBrowse.Count > 0)
{
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
// this error indicates that the server does not have enough simultaneously active
// continuation points. This request will need to be resent after the other operations
// have been completed and their continuation points released.
if (results[ii].StatusCode == StatusCodes.BadNoContinuationPoints)
{
unprocessedOperations.Add(nodesToBrowse[ii]);
}
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
references.AddRange(results[ii].References);
}
// check if unprocessed results exist.
nodesToBrowse = unprocessedOperations;
}
// return complete list.
return(references);
}
catch (Exception)
{
return(null);
}
}
/// <summary>
/// Browses the node and returns the references found.
/// </summary>
protected virtual bool Browse(
Node node,
BrowseDescription nodeToBrowse,
ReferenceDescriptionCollection references)
{
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
RequestHeader requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.Browse(
requestHeader,
new ViewDescription(),
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
// check diagnostics.
if (diagnosticInfos != null && diagnosticInfos.Count > 0)
{
Log("Returned non-empty DiagnosticInfos array during Browse.");
return false;
}
// process results.
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < results.Count; ii++)
{
// check status code.
if (StatusCode.IsBad(results[ii].StatusCode))
{
Log(
"Browse Failed for Node '{0}'. Status = {2}, NodeId = {1}",
node,
node.NodeId,
results[ii].StatusCode);
return false;
}
// save references.
references.AddRange(results[ii].References);
if (results[ii].ContinuationPoint != null)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
// process continuation points.
while (continuationPoints.Count > 0)
{
requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.BrowseNext(
requestHeader,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
// check diagnostics.
if (diagnosticInfos != null && diagnosticInfos.Count > 0)
{
Log("Returned non-empty DiagnosticInfos array during BrowseNext.");
return false;
}
continuationPoints.Clear();
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
// check status code.
if (StatusCode.IsBad(results[ii].StatusCode))
{
Log(
"BrowseNext Failed for Node '{0}'. Status = {2}, NodeId = {1}",
node,
node.NodeId,
results[ii].StatusCode);
return false;
}
// save references.
references.AddRange(results[ii].References);
if (results[ii].ContinuationPoint != null)
{
// check max references.
if (results[ii].References.Count == 0)
{
Log(
"No references returned with a continuation point for Node '{0}'. NodeId = {1}",
node,
node.NodeId);
return false;
}
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
}
return true;
}
/// <summary>
/// Browses the address space and returns the references found.
/// </summary>
public static ReferenceDescriptionCollection Browse(Session session, ViewDescription view, BrowseDescriptionCollection nodesToBrowse, bool throwOnError)
{
try
{
ReferenceDescriptionCollection references = new ReferenceDescriptionCollection();
BrowseDescriptionCollection unprocessedOperations = new BrowseDescriptionCollection();
while (nodesToBrowse.Count > 0)
{
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
view,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
// this error indicates that the server does not have enough simultaneously active
// continuation points. This request will need to be resent after the other operations
// have been completed and their continuation points released.
if (results[ii].StatusCode == StatusCodes.BadNoContinuationPoints)
{
unprocessedOperations.Add(nodesToBrowse[ii]);
}
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
references.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
// process continuation points.
ByteStringCollection revisedContiuationPoints = new ByteStringCollection();
while (continuationPoints.Count > 0)
{
// continue browse operation.
session.BrowseNext(
null,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
for (int ii = 0; ii < continuationPoints.Count; ii++)
{
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
references.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null)
{
revisedContiuationPoints.Add(results[ii].ContinuationPoint);
}
}
// check if browsing must continue;
revisedContiuationPoints = continuationPoints;
}
// check if unprocessed results exist.
nodesToBrowse = unprocessedOperations;
}
// return complete list.
return references;
}
catch (Exception exception)
{
if (throwOnError)
{
throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError);
}
return null;
}
}
/// <summary>
/// Browses the node and returns the references found.
/// </summary>
protected virtual bool Browse(
Node node,
BrowseDescription nodeToBrowse,
ReferenceDescriptionCollection references)
{
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
RequestHeader requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.Browse(
requestHeader,
new ViewDescription(),
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
// check diagnostics.
if (diagnosticInfos != null && diagnosticInfos.Count > 0)
{
Log("Returned non-empty DiagnosticInfos array during Browse.");
return(false);
}
// process results.
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < results.Count; ii++)
{
// check status code.
if (StatusCode.IsBad(results[ii].StatusCode))
{
Log(
"Browse Failed for Node '{0}'. Status = {2}, NodeId = {1}",
node,
node.NodeId,
results[ii].StatusCode);
return(false);
}
// save references.
references.AddRange(results[ii].References);
if (results[ii].ContinuationPoint != null)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
// process continuation points.
while (continuationPoints.Count > 0)
{
requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.BrowseNext(
requestHeader,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
// check diagnostics.
if (diagnosticInfos != null && diagnosticInfos.Count > 0)
{
Log("Returned non-empty DiagnosticInfos array during BrowseNext.");
return(false);
}
continuationPoints.Clear();
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
// check status code.
if (StatusCode.IsBad(results[ii].StatusCode))
{
Log(
"BrowseNext Failed for Node '{0}'. Status = {2}, NodeId = {1}",
node,
node.NodeId,
results[ii].StatusCode);
return(false);
}
// save references.
references.AddRange(results[ii].References);
if (results[ii].ContinuationPoint != null)
{
// check max references.
if (results[ii].References.Count == 0)
{
Log(
"No references returned with a continuation point for Node '{0}'. NodeId = {1}",
node,
node.NodeId);
return(false);
}
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
}
return(true);
}
/// <summary>
/// Worker function to browse the full address space of a server.
/// </summary>
/// <param name="services">The service interface.</param>
/// <param name="operationLimits">The operation limits.</param>
public static ReferenceDescriptionCollection BrowseFullAddressSpaceWorker(
IServerTestServices services,
RequestHeader requestHeader,
OperationLimits operationLimits = null,
BrowseDescription browseDescription = null)
{
operationLimits = operationLimits ?? new OperationLimits();
requestHeader.Timestamp = DateTime.UtcNow;
// Browse template
var startingNode = Objects.RootFolder;
var browseTemplate = browseDescription ?? new BrowseDescription {
NodeId = startingNode,
BrowseDirection = BrowseDirection.Forward,
ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences,
IncludeSubtypes = true,
NodeClassMask = 0,
ResultMask = (uint)BrowseResultMask.All
};
var browseDescriptionCollection = ServerFixtureUtils.CreateBrowseDescriptionCollectionFromNodeId(
new NodeIdCollection(new NodeId[] { Objects.RootFolder }),
browseTemplate);
// Browse
ResponseHeader response = null;
uint requestedMaxReferencesPerNode = operationLimits.MaxNodesPerBrowse;
bool verifyMaxNodesPerBrowse = operationLimits.MaxNodesPerBrowse > 0;
var referenceDescriptions = new ReferenceDescriptionCollection();
// Test if server responds with BadNothingToDo
{
var sre = Assert.Throws <ServiceResultException>(() =>
_ = services.Browse(requestHeader, null,
0, browseDescriptionCollection.Take(0).ToArray(),
out var results, out var infos));
Assert.AreEqual(StatusCodes.BadNothingToDo, sre.StatusCode);
}
while (browseDescriptionCollection.Any())
{
BrowseResultCollection allResults = new BrowseResultCollection();
if (verifyMaxNodesPerBrowse &&
browseDescriptionCollection.Count > operationLimits.MaxNodesPerBrowse)
{
verifyMaxNodesPerBrowse = false;
// Test if server responds with BadTooManyOperations
var sre = Assert.Throws <ServiceResultException>(() =>
_ = services.Browse(requestHeader, null,
0, browseDescriptionCollection,
out var results, out var infos));
Assert.AreEqual(StatusCodes.BadTooManyOperations, sre.StatusCode);
// Test if server responds with BadTooManyOperations
var tempBrowsePath = browseDescriptionCollection.Take((int)operationLimits.MaxNodesPerBrowse + 1).ToArray();
sre = Assert.Throws <ServiceResultException>(() =>
_ = services.Browse(requestHeader, null,
0, tempBrowsePath,
out var results, out var infos));
Assert.AreEqual(StatusCodes.BadTooManyOperations, sre.StatusCode);
}
bool repeatBrowse;
var maxNodesPerBrowse = operationLimits.MaxNodesPerBrowse;
BrowseResultCollection browseResultCollection = new BrowseResultCollection();
DiagnosticInfoCollection diagnosticsInfoCollection;
do
{
var browseCollection = (maxNodesPerBrowse == 0) ?
browseDescriptionCollection :
browseDescriptionCollection.Take((int)maxNodesPerBrowse).ToArray();
repeatBrowse = false;
try
{
requestHeader.Timestamp = DateTime.UtcNow;
response = services.Browse(requestHeader, null,
requestedMaxReferencesPerNode, browseCollection,
out browseResultCollection, out diagnosticsInfoCollection);
ServerFixtureUtils.ValidateResponse(response);
ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticsInfoCollection, browseCollection);
allResults.AddRange(browseResultCollection);
}
catch (ServiceResultException sre)
{
if (sre.StatusCode == StatusCodes.BadEncodingLimitsExceeded ||
sre.StatusCode == StatusCodes.BadResponseTooLarge)
{
// try to address by overriding operation limit
maxNodesPerBrowse = maxNodesPerBrowse == 0 ?
(uint)browseCollection.Count / 2 : maxNodesPerBrowse / 2;
repeatBrowse = true;
}
else
{
throw;
}
}
} while (repeatBrowse);
if (maxNodesPerBrowse == 0)
{
browseDescriptionCollection.Clear();
}
else
{
browseDescriptionCollection = browseDescriptionCollection.Skip((int)maxNodesPerBrowse).ToArray();
}
// Browse next
var continuationPoints = ServerFixtureUtils.PrepareBrowseNext(browseResultCollection);
while (continuationPoints.Any())
{
requestHeader.Timestamp = DateTime.UtcNow;
response = services.BrowseNext(requestHeader, false, continuationPoints,
out var browseNextResultCollection, out diagnosticsInfoCollection);
ServerFixtureUtils.ValidateResponse(response);
ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticsInfoCollection, continuationPoints);
allResults.AddRange(browseNextResultCollection);
continuationPoints = ServerFixtureUtils.PrepareBrowseNext(browseNextResultCollection);
}
// Build browse request for next level
var browseTable = new NodeIdCollection();
foreach (var result in allResults)
{
referenceDescriptions.AddRange(result.References);
foreach (var reference in result.References)
{
browseTable.Add(ExpandedNodeId.ToNodeId(reference.NodeId, null));
}
}
browseDescriptionCollection = ServerFixtureUtils.CreateBrowseDescriptionCollectionFromNodeId(browseTable, browseTemplate);
}
referenceDescriptions.Sort((x, y) => (x.NodeId.CompareTo(y.NodeId)));
TestContext.Out.WriteLine("Found {0} references on server.", referenceDescriptions.Count);
foreach (var reference in referenceDescriptions)
{
TestContext.Out.WriteLine("NodeId {0} {1} {2}", reference.NodeId, reference.NodeClass, reference.BrowseName);
}
return(referenceDescriptions);
}
/// <summary>
/// Browses the address space and returns the references found.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="nodeToBrowse">The NodeId for the starting node.</param>
/// <param name="throwOnError">if set to <c>true</c> a exception will be thrown on an error.</param>
/// <returns>
/// The references found. Null if an error occurred.
/// </returns>
public static ReferenceDescriptionCollection Browse(Session session, BrowseDescription nodeToBrowse, bool throwOnError)
{
try
{
var references = new ReferenceDescriptionCollection();
// construct browse request.
var nodesToBrowse = new BrowseDescriptionCollection {
nodeToBrowse
};
// start the browse operation.
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
session.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
do
{
// check for error.
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(results[0].StatusCode);
}
// process results.
references.AddRange(results[0].References);
// check if all references have been fetched.
if (results[0].References.Count == 0 || results[0].ContinuationPoint == null)
{
break;
}
// continue browse operation.
var continuationPoints = new ByteStringCollection {
results[0].ContinuationPoint
};
session.BrowseNext(
null,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
}while (true);
//return complete list.
return(references);
}
catch (Exception exception)
{
if (throwOnError)
{
throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError);
}
return(null);
}
}
public async Task BrowseAsync()
{
// Browse template
var startingNode = Objects.RootFolder;
var browseTemplate = new BrowseDescription {
NodeId = startingNode,
BrowseDirection = BrowseDirection.Forward,
ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences,
IncludeSubtypes = true,
NodeClassMask = 0,
ResultMask = (uint)BrowseResultMask.All
};
var requestHeader = new RequestHeader();
var referenceDescriptions = new ReferenceDescriptionCollection();
var browseDescriptionCollection = ServerFixtureUtils.CreateBrowseDescriptionCollectionFromNodeId(
new NodeIdCollection(new NodeId[] { Objects.RootFolder }),
browseTemplate);
while (browseDescriptionCollection.Any())
{
TestContext.Out.WriteLine("Browse {0} Nodes...", browseDescriptionCollection.Count);
BrowseResultCollection allResults = new BrowseResultCollection();
var response = await Session.BrowseAsync(
requestHeader, null, 5,
browseDescriptionCollection,
CancellationToken.None).ConfigureAwait(false);
BrowseResultCollection results = response.Results;
DiagnosticInfoCollection diagnosticInfos = response.DiagnosticInfos;
allResults.AddRange(results);
var continuationPoints = ServerFixtureUtils.PrepareBrowseNext(results);
while (continuationPoints.Any())
{
TestContext.Out.WriteLine("BrowseNext {0} Nodes...", continuationPoints.Count);
var nextResponse = await Session.BrowseNextAsync(requestHeader, false, continuationPoints, CancellationToken.None);
BrowseResultCollection browseNextResultCollection = nextResponse.Results;
diagnosticInfos = nextResponse.DiagnosticInfos;
ServerFixtureUtils.ValidateResponse(response.ResponseHeader);
ServerFixtureUtils.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
allResults.AddRange(browseNextResultCollection);
continuationPoints = ServerFixtureUtils.PrepareBrowseNext(browseNextResultCollection);
}
// Build browse request for next level
var browseTable = new NodeIdCollection();
foreach (var result in allResults)
{
referenceDescriptions.AddRange(result.References);
foreach (var reference in result.References)
{
browseTable.Add(ExpandedNodeId.ToNodeId(reference.NodeId, Session.NamespaceUris));
}
}
browseDescriptionCollection = ServerFixtureUtils.CreateBrowseDescriptionCollectionFromNodeId(browseTable, browseTemplate);
}
referenceDescriptions.Sort((x, y) => (x.NodeId.CompareTo(y.NodeId)));
// read values
var nodesToRead = new ReadValueIdCollection(referenceDescriptions.Select(r =>
new ReadValueId()
{
NodeId = ExpandedNodeId.ToNodeId(r.NodeId, Session.NamespaceUris),
AttributeId = Attributes.Value
}));
// test reads
TestContext.Out.WriteLine("Test Read Nodes...");
var readResponse = await Session.ReadAsync(requestHeader, 0, TimestampsToReturn.Neither, nodesToRead, CancellationToken.None).ConfigureAwait(false);
// test register nodes
TestContext.Out.WriteLine("Test Register Nodes...");
var nodesToRegister = new NodeIdCollection(nodesToRead.Select(n => n.NodeId));
var registerResponse = await Session.RegisterNodesAsync(requestHeader, nodesToRegister, CancellationToken.None).ConfigureAwait(false);
var unregisterResponse = await Session.UnregisterNodesAsync(requestHeader, registerResponse.RegisteredNodeIds, CancellationToken.None).ConfigureAwait(false);
// test writes
var nodesToWrite = new WriteValueCollection();
int ii = 0;
foreach (var result in readResponse.Results)
{
if (StatusCode.IsGood(result.StatusCode))
{
var writeValue = new WriteValue()
{
AttributeId = Attributes.Value,
NodeId = nodesToRead[ii].NodeId,
Value = new DataValue(result.WrappedValue)
};
nodesToWrite.Add(writeValue);
}
ii++;
}
TestContext.Out.WriteLine("Test Writes...");
var writeResponse = await Session.WriteAsync(requestHeader, nodesToWrite, CancellationToken.None).ConfigureAwait(false);
TestContext.Out.WriteLine("Found {0} references on server.", referenceDescriptions.Count);
ii = 0;
foreach (var reference in referenceDescriptions)
{
TestContext.Out.WriteLine("NodeId {0} {1} {2} {3}", reference.NodeId, reference.NodeClass, reference.BrowseName, readResponse.Results[ii++].WrappedValue);
}
}
