/// <summary>
/// 浏览一个节点的引用
/// </summary>
/// <param name="tag">节点值</param>
/// <returns>引用节点描述</returns>
public ReferenceDescription[] BrowseNodeReference(string tag)
{
NodeId sourceId = new NodeId(tag);
// 该节点可以读取到方法
BrowseDescription nodeToBrowse1 = new BrowseDescription( );
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// 该节点无论怎么样都读取不到方法
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription( );
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection( );
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
return(references.ToArray( ));
}
private ReferenceDescriptionCollection GetReferenceDescriptionCollection(NodeId sourceId)
{
TaskCompletionSource <ReferenceDescriptionCollection> task = new TaskCompletionSource <ReferenceDescriptionCollection>();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method | NodeClass.ReferenceType | NodeClass.ObjectType | NodeClass.View | NodeClass.VariableType | NodeClass.DataType);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable | NodeClass.Method | NodeClass.View | NodeClass.ReferenceType | NodeClass.ObjectType | NodeClass.VariableType | NodeClass.DataType);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_OpcUaClient.Session, nodesToBrowse, false);
return(references);
}
/// <summary>浏览一个节点的引用</summary>
/// <param name="tag"></param>
/// <returns></returns>
public ReferenceDescription[] BrowseNodeReference(string tag)
{
NodeId nodeId = new NodeId(tag);
BrowseDescription browseDescription1 = new BrowseDescription();
browseDescription1.NodeId = nodeId;
browseDescription1.BrowseDirection = BrowseDirection.Forward;
browseDescription1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
browseDescription1.IncludeSubtypes = true;
browseDescription1.NodeClassMask = 7U;
browseDescription1.ResultMask = 63U;
BrowseDescription browseDescription2 = new BrowseDescription();
browseDescription2.NodeId = nodeId;
browseDescription2.BrowseDirection = BrowseDirection.Forward;
browseDescription2.ReferenceTypeId = ReferenceTypeIds.Organizes;
browseDescription2.IncludeSubtypes = true;
browseDescription2.NodeClassMask = 3U;
browseDescription2.ResultMask = 63U;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(browseDescription1);
nodesToBrowse.Add(browseDescription2);
return(FormUtils.Browse(this.m_session, nodesToBrowse, false).ToArray());
}
/// <summary>
/// Populates the branch in the tree view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
/// <param name="nodes">The node collect to populate.</param>
private async Task PopulateBranch(NodeId sourceId, TreeNodeCollection nodes)
{
try
{
nodes.Clear();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
Cursor.Current = Cursors.WaitCursor;
// fetch references from the server.
ReferenceDescriptionCollection references = await Task.Run(() => FormUtils.Browse(m_groupLog.Server.Connection.Session, nodesToBrowse, false));
Cursor.Current = Cursors.Default;
// process results.
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription target = references[ii];
// add node.
TreeNode child = new TreeNode(Utils.Format("{0}", target));
child.Tag = target;
child.Nodes.Add(new TreeNode());
nodes.Add(child);
if (target.NodeClass == NodeClass.Variable)
{
child.ImageKey = "label_icon";
child.SelectedImageKey = "label_icon";
}
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Populates the branch in the tree view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
/// <param name="nodes">The node collect to populate.</param>
private void PopulateBranch(NodeId sourceId, TreeNodeCollection nodes)
{
try
{
nodes.Clear();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
// process results.
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription target = references[ii];
// add node.
TreeNode child = new TreeNode(Utils.Format("{0}", target));
child.Tag = target;
child.Nodes.Add(new TreeNode());
nodes.Add(child);
}
// update the attributes display.
DisplayAttributes(sourceId);
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
private static void BrowseRootTree2(Session session)
{
Console.WriteLine("Browse the server namespace.");
ReferenceDescriptionCollection refs;
Byte[] cp;
netCalls++;
session.Browse(null, null, ObjectIds.ObjectsFolder, 0u, BrowseDirection.Forward, ReferenceTypeIds.HierarchicalReferences, true, (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method, out cp, out refs);
Console.WriteLine("DisplayName: BrowseName, NodeClass");
BrowseDescriptionCollection bc = new BrowseDescriptionCollection();
foreach (var rd in refs)
{
totalNodes++;
Console.WriteLine("{0}: {1}, {2}", rd.DisplayName, rd.BrowseName, rd.NodeClass);
BrowseDescription bd = new BrowseDescription();
bd.NodeId = (NodeId)rd.NodeId;
bd.BrowseDirection = BrowseDirection.Forward;
bd.ReferenceTypeId = ReferenceTypeIds.HierarchicalReferences;
bd.IncludeSubtypes = true;
bd.NodeClassMask = (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method;
bc.Add(bd);
}
BrowseTree2(session, bc, "");
Console.WriteLine($"Total Nodes: {nodeList.Count}");
}
/// <summary>
/// 读取一个节点的指定属性
/// </summary>
/// <param name="nodeId"></param>
/// <param name="attribute"></param>
/// <returns></returns>
private DataValue ReadNoteDataValueAttributes(NodeId nodeId, uint attribute)
{
NodeId sourceId = nodeId;
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = attribute;
nodesToRead.Add(nodeToRead);
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(CommonMethods.opcUaClient.Session, nodesToBrowse, false);
if (references == null)
{
return(null);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead2 = new ReadValueId();
nodeToRead2.NodeId = (NodeId)references[ii].NodeId;
nodeToRead2.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead2);
}
// read all values.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
CommonMethods.opcUaClient.Session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
return(results[0]);
}
/// <summary>
/// Handles the BeforeExpand event of the BrowseTV control.
/// </summary>
private void BrowseTV_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
ReferenceDescription reference = (ReferenceDescription)e.Node.Tag;
e.Node.Nodes.Clear();
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < m_referenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = m_rootId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = m_referenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
nodesToBrowse.Add(nodeToBrowse);
}
// add the childen to the control.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
for (int ii = 0; references != null && ii < references.Count; ii++)
{
reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
TreeNode child = new TreeNode(reference.ToString());
child.Nodes.Add(new TreeNode());
child.Tag = reference;
e.Node.Nodes.Add(child);
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Create a browse description from a node id collection.
/// </summary>
/// <param name="nodeIdCollection">The node id collection.</param>
/// <param name="template">The template for the browse description for each node id.</param>
public static BrowseDescriptionCollection CreateBrowseDescriptionCollectionFromNodeId(
NodeIdCollection nodeIdCollection,
BrowseDescription template)
{
var browseDescriptionCollection = new BrowseDescriptionCollection();
foreach (var nodeId in nodeIdCollection)
{
BrowseDescription browseDescription = (BrowseDescription)template.MemberwiseClone();
browseDescription.NodeId = nodeId;
browseDescriptionCollection.Add(browseDescription);
}
return(browseDescriptionCollection);
}
/// <summary>读取一个节点的所有属性</summary>
/// <param name="tag"></param>
/// <returns></returns>
//public OpcuaNodeAttribute[] ReadNoteAttributes(string tag)
//{
// NodeId nodeId = new NodeId(tag);
// ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// for (uint index = 2; index <= 22U; ++index)
// nodesToRead.Add(new ReadValueId()
// {
// NodeId = nodeId,
// AttributeId = index
// });
// int count = nodesToRead.Count;
// BrowseDescription browseDescription = new BrowseDescription();
// browseDescription.NodeId = nodeId;
// browseDescription.BrowseDirection = BrowseDirection.Forward;
// browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty;
// browseDescription.IncludeSubtypes = true;
// browseDescription.NodeClassMask = 0U;
// browseDescription.ResultMask = 63U;
// BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
// nodesToBrowse.Add(browseDescription);
// ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false);
// if (descriptionCollection == null)
// return new OpcuaNodeAttribute[0];
// for (int index = 0; index < descriptionCollection.Count; ++index)
// {
// if (!descriptionCollection[index].NodeId.IsAbsolute)
// nodesToRead.Add(new ReadValueId()
// {
// NodeId = (NodeId)descriptionCollection[index].NodeId,
// AttributeId = 13U
// });
// }
// DataValueCollection results = (DataValueCollection)null;
// DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null;
// this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos);
// ClientBase.ValidateResponse((IList)results, (IList)nodesToRead);
// ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead);
// List<OpcNodeAttribute> opcNodeAttributeList = new List<OpcNodeAttribute>();
// for (int index = 0; index < results.Count; ++index)
// {
// OpcNodeAttribute opcNodeAttribute1 = new OpcNodeAttribute();
// BuiltInType builtInType;
// if (index < count)
// {
// if (!(results[index].StatusCode == 2150957056U))
// {
// opcNodeAttribute1.Name = Attributes.GetBrowseName(nodesToRead[index].AttributeId);
// if (StatusCode.IsBad(results[index].StatusCode))
// {
// opcNodeAttribute1.Type = Utils.Format("{0}", (object)Attributes.GetDataTypeId(nodesToRead[index].AttributeId));
// opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode);
// }
// else
// {
// TypeInfo typeInfo = TypeInfo.Construct(results[index].Value);
// OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1;
// builtInType = typeInfo.BuiltInType;
// string str = builtInType.ToString();
// opcNodeAttribute2.Type = str;
// if (typeInfo.ValueRank >= 0)
// opcNodeAttribute1.Type += "[]";
// opcNodeAttribute1.Value = results[index].Value;
// }
// }
// else
// continue;
// }
// else if (!(results[index].StatusCode == 2150891520U))
// {
// opcNodeAttribute1.Name = Utils.Format("{0}", (object)descriptionCollection[index - count]);
// if (StatusCode.IsBad(results[index].StatusCode))
// {
// opcNodeAttribute1.Type = string.Empty;
// opcNodeAttribute1.Value = (object)Utils.Format("{0}", (object)results[index].StatusCode);
// }
// else
// {
// TypeInfo typeInfo = TypeInfo.Construct(results[index].Value);
// OpcNodeAttribute opcNodeAttribute2 = opcNodeAttribute1;
// builtInType = typeInfo.BuiltInType;
// string str = builtInType.ToString();
// opcNodeAttribute2.Type = str;
// if (typeInfo.ValueRank >= 0)
// opcNodeAttribute1.Type += "[]";
// opcNodeAttribute1.Value = results[index].Value;
// }
// }
// else
// continue;
// opcNodeAttributeList.Add(opcNodeAttribute1);
// }
// return opcNodeAttributeList.ToArray();
//}
/// <summary>读取一个节点的所有属性</summary>
/// <param name="tag"></param>
/// <returns></returns>
public DataValue[] ReadNoteDataValueAttributes(string tag)
{
NodeId nodeId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (uint index = 1; index <= 22U; ++index)
{
nodesToRead.Add(new ReadValueId()
{
NodeId = nodeId,
AttributeId = index
});
}
int count = nodesToRead.Count;
BrowseDescription browseDescription = new BrowseDescription();
browseDescription.NodeId = nodeId;
browseDescription.BrowseDirection = BrowseDirection.Forward;
browseDescription.ReferenceTypeId = ReferenceTypeIds.HasProperty;
browseDescription.IncludeSubtypes = true;
browseDescription.NodeClassMask = 0U;
browseDescription.ResultMask = 63U;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(browseDescription);
ReferenceDescriptionCollection descriptionCollection = FormUtils.Browse(this.m_session, nodesToBrowse, false);
if (descriptionCollection == null)
{
return(new DataValue[0]);
}
for (int index = 0; index < descriptionCollection.Count; ++index)
{
if (!descriptionCollection[index].NodeId.IsAbsolute)
{
nodesToRead.Add(new ReadValueId()
{
NodeId = (NodeId)descriptionCollection[index].NodeId,
AttributeId = 13U
});
}
}
DataValueCollection results = (DataValueCollection)null;
DiagnosticInfoCollection diagnosticInfos = (DiagnosticInfoCollection)null;
this.m_session.Read((RequestHeader)null, 0.0, TimestampsToReturn.Neither, nodesToRead, out results, out diagnosticInfos);
ClientBase.ValidateResponse((IList)results, (IList)nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, (IList)nodesToRead);
return(results.ToArray());
}
/// <summary>
/// Gets the list of references to follow.
/// </summary>
private BrowseDescriptionCollection CreateNodesToBrowse()
{
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
if (ReferenceTypeIds != null && ReferenceTypeIds.Length > 0)
{
for (int ii = 0; ii < ReferenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
}
}
else
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.References;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
}
return(nodesToBrowse);
}
static void Browse(Session session)
{
DiagnosticInfoCollection diagnosticInfos;
BrowseDescriptionCollection bc = new BrowseDescriptionCollection();
BrowseDescription bd = new BrowseDescription();
bd.BrowseDirection = BrowseDirection.Forward;
NodeId nodeId = Opc.Ua.Objects.ObjectsFolder;
do
{
Console.WriteLine("\n Enter nodeId to Browse (or q to exit)");
string s = Console.ReadLine();
if (s == "q")
{
break;
}
if (s.Length == 0)
{
nodeId = Opc.Ua.Objects.ObjectsFolder;
}
else
{
nodeId = new NodeId(s);
}
bc.Clear();
bd.NodeId = nodeId;
bc.Add(bd);
BrowseResultCollection results;
ResponseHeader rh =
session.Browse(null, null, 100, bc, out results, out diagnosticInfos);
foreach (BrowseResult res in results)
{
foreach (ReferenceDescription rdc in res.References)
{
Console.WriteLine(String.Format(" Node = {0} (namespace {1}) {2}", rdc.NodeId.ToString(),
rdc.NodeId.NamespaceIndex, Environment.NewLine));
}
}
} while (true);
}
/// <summary>
///
/// </summary>
/// <param name="session"></param>
/// <param name="targetId"></param>
/// <param name="m_referenceTypeIds"></param>
/// <returns></returns>
public ReferenceDescriptionCollection Browse(NodeId targetId, params NodeId[] m_referenceTypeIds)
{
BrowseDescriptionCollection nb = new BrowseDescriptionCollection();
for (int ii = 0; ii < m_referenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = targetId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = m_referenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nb.Add(nodeToBrowse);
}
return(Browse(this.m_session, nb, false));
}
private static void BrowseTree2(Session session, BrowseDescriptionCollection bdCollection, string sPre)
{
BrowseResultCollection br = new BrowseResultCollection();
DiagnosticInfoCollection dc = new DiagnosticInfoCollection();
netCalls++;
Console.WriteLine($"Getting: {bdCollection.Count}");
if (bdCollection.Count != 0)
{
session.Browse(null, null, (uint)1000000, bdCollection, out br, out dc);
if (br != null)
{
if (bdCollection.Count != br.Count)
{
Console.WriteLine($"NOT EQUAL: DC Count = {dc.Count}");
}
int i = 0;
BrowseDescriptionCollection bc = new BrowseDescriptionCollection();
foreach (var b in br)
{
nodeList.Add(b);
var inNode = bdCollection[i];
foreach (var n in b.References)
{
BrowseDescription bd = new BrowseDescription();
bd.NodeId = (NodeId)n.NodeId;
bd.BrowseDirection = BrowseDirection.Forward;
bd.ReferenceTypeId = ReferenceTypeIds.HasChild;
bd.IncludeSubtypes = true;
bd.NodeClassMask = (uint)NodeClass.Variable | (uint)NodeClass.Object | (uint)NodeClass.Method;
bc.Add(bd);
}
}
BrowseTree2(session, bc, "KN");
}
}
}
/// <summary>
/// Populates the branch in the tree view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
/// <param name="nodes">The node collect to populate.</param>
private void PopulateBranch(NodeId sourceId, TreeNodeCollection nodes)
{
try
{
nodes.Clear();
// find all of the components of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.Aggregates;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
// find all nodes organized by the node.
BrowseDescription nodeToBrowse2 = new BrowseDescription();
nodeToBrowse2.NodeId = sourceId;
nodeToBrowse2.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse2.ReferenceTypeId = ReferenceTypeIds.Organizes;
nodeToBrowse2.IncludeSubtypes = true;
nodeToBrowse2.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse2.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
nodesToBrowse.Add(nodeToBrowse2);
// fetch references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
// process results.
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription target = references[ii];
// add node.
TreeNode child = new TreeNode(Utils.Format("{0}", target));
child.Tag = target;
child.Nodes.Add(new TreeNode());
nodes.Add(child);
}
// update the attributes display.
DisplayAttributes(sourceId);
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Reads the attribute values in order to compare them to the returned results.
/// </summary>
private bool VerifyTypeDefinitions(
Node node,
BrowseDescription description,
ReferenceDescriptionCollection references)
{
// check if nothing to do.
if (references.Count == 0)
{
return true;
}
bool success = true;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < references.Count; ii++)
{
ReferenceDescription reference = references[ii];
if ((description.ResultMask & (uint)BrowseResultMask.TypeDefinition) == 0)
{
if (!NodeId.IsNull(reference.TypeDefinition))
{
success = false;
Log(
"Unexpected TypeDefinition returned for Node '{0}'. NodeId = {1}, TargetId = {2}, TypeDefinition = {3}",
node,
node.NodeId,
reference.NodeId,
reference.TypeDefinition);
}
continue;
}
// ignore invalid or external references.
if (reference == null || reference.NodeId == null || reference.NodeId.IsAbsolute)
{
continue;
}
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.IncludeSubtypes = false;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds.HasTypeDefinition;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.None;
nodeToBrowse.Handle = references[ii];
nodesToBrowse.Add(nodeToBrowse);
}
// nothing more to do if no type definitions requested.
if ((description.ResultMask & (uint)BrowseResultMask.TypeDefinition) == 0)
{
return success;
}
// browse.
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
RequestHeader requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.Browse(
null,
m_view,
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 when Browsing TypeDefinition while Browsing Node '{0}'. NodeId = {1}", node, node.NodeId);
return false;
}
bool error = false;
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
BrowseResult result = results[ii];
if (StatusCode.IsBad(result.StatusCode))
{
error = true;
Log(
"Browse TypeDefinition Failed for Node '{0}'. NodeId = {1}, TargetId = {2}, Status = {3}",
node,
node.NodeId,
nodesToBrowse[ii].NodeId,
results[0].StatusCode);
continue;
}
ReferenceDescription reference = (ReferenceDescription)nodesToBrowse[ii].Handle;
if (result.References.Count == 0)
{
if (!NodeId.IsNull(reference.TypeDefinition))
{
error = true;
Log(
"Unexpected TypeDefinition returned for Node '{0}'. NodeId = {1}, TargetId = {2}, TypeDefinition = {3}",
node,
node.NodeId,
nodesToBrowse[ii].NodeId,
reference.TypeDefinition);
continue;
}
}
else
{
if (result.References.Count != 1)
{
error = true;
Log(
"Too many TypeDefinitions returned for Node '{0}'. NodeId = {1}, TargetId = {2}, Count = {3}",
node,
node.NodeId,
nodesToBrowse[ii].NodeId,
result.References.Count);
continue;
}
if (result.References[0].NodeId != reference.TypeDefinition)
{
error = true;
Log(
"Incorrect TypeDefinition returned for Node '{0}'. NodeId = {1}, TargetId = {2}, Expected = {3}, Actual = {4}",
node,
node.NodeId,
nodesToBrowse[ii].NodeId,
result.References[0].NodeId,
reference.TypeDefinition);
continue;
}
}
}
return !error;
}
/// <summary>
/// Browses the address space and returns the references found.
/// </summary>
public static ReferenceDescriptionCollection Browse(Session session, ViewDescription view, BrowseDescription nodeToBrowse, bool throwOnError)
{
try
{
ReferenceDescriptionCollection references = new ReferenceDescriptionCollection();
// construct browse request.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// 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);
do
{
// check for error.
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(results[0].StatusCode);
}
// process results.
for (int ii = 0; ii < results[0].References.Count; ii++)
{
references.Add(results[0].References[ii]);
}
// check if all references have been fetched.
if (results[0].References.Count == 0 || results[0].ContinuationPoint == null)
{
break;
}
// continue browse operation.
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(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;
}
}
/// <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);
references.AddRange(additionalReferences);
}
// return the results.
return references;
}
finally
{
m_browseInProgress = false;
}
}
/// <summary>
/// Begins an asynchronous invocation of the Browse service.
/// </summary>
/// <param name="requestHeader">The request header.</param>
/// <param name="view">The view to browse.</param>
/// <param name="nodeToBrowse">The node to browse.</param>
/// <param name="maxResultsToReturn">The maximum number of returned values..</param>
/// <param name="browseDirection">The browse direction.</param>
/// <param name="referenceTypeId">The reference type id.</param>
/// <param name="includeSubtypes">If set to <c>true</c> the subtypes of the ReferenceType will be included in the browse.</param>
/// <param name="nodeClassMask">The node class mask.</param>
/// <param name="callback">The callback.</param>
/// <param name="asyncState"></param>
/// <returns></returns>
public IAsyncResult BeginBrowse(
RequestHeader requestHeader,
ViewDescription view,
NodeId nodeToBrowse,
uint maxResultsToReturn,
BrowseDirection browseDirection,
NodeId referenceTypeId,
bool includeSubtypes,
uint nodeClassMask,
AsyncCallback callback,
object asyncState)
{
BrowseDescription description = new BrowseDescription();
description.NodeId = nodeToBrowse;
description.BrowseDirection = browseDirection;
description.ReferenceTypeId = referenceTypeId;
description.IncludeSubtypes = includeSubtypes;
description.NodeClassMask = nodeClassMask;
description.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(description);
return BeginBrowse(
requestHeader,
view,
maxResultsToReturn,
nodesToBrowse,
callback,
asyncState);
}
/// <summary>
/// Reads the properties for the node.
/// </summary>
private void ReadProperties(NodeId nodeId)
{
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
// find properties.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
// build list of properties to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; references != null && ii < references.Count; ii++)
{
ReferenceDescription reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodeToRead.Handle = reference;
nodesToRead.Add(nodeToRead);
}
if (nodesToRead.Count == 0)
{
return;
}
// read the properties.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// add the results to the display.
for (int ii = 0; ii < results.Count; ii++)
{
ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle;
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
// add the metadata for the attribute.
ListViewItem item = new ListViewItem(reference.ToString());
item.SubItems.Add(typeInfo.BuiltInType.ToString());
if (typeInfo.ValueRank >= 0)
{
item.SubItems[1].Text += "[]";
}
// add the value.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.SubItems.Add(results[ii].StatusCode.ToString());
}
else
{
item.SubItems.Add(results[ii].WrappedValue.ToString());
}
item.Tag = new AttributeInfo() { NodeToRead = nodesToRead[ii], Value = results[ii] };
item.ImageIndex = ClientUtils.GetImageIndex(m_session, NodeClass.Variable, Opc.Ua.VariableTypeIds.PropertyType, false);
// display in list.
AttributesLV.Items.Add(item);
}
}
/// <summary>
/// Creates a browse description for a node class test.
/// </summary>
private void AddNodeClassTest(
Node node,
NodeClass nodeClassMask,
List<Node> nodes,
BrowseDescriptionCollection nodesToBrowse,
List<ReferenceDescriptionCollection> references,
bool clearLists)
{
if (clearLists)
{
nodes.Clear();
nodesToBrowse.Clear();
references.Clear();
}
nodes.Add(node);
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = node.NodeId;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds.References;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.BrowseDirection = BrowseDirection.Both;
nodeToBrowse.NodeClassMask = (uint)nodeClassMask;
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.DisplayName | BrowseResultMask.NodeClass | BrowseResultMask.ReferenceTypeId | BrowseResultMask.IsForward);
nodesToBrowse.Add(nodeToBrowse);
references.Add(new ReferenceDescriptionCollection());
}
private void ReadNode(NodeId nodeid, bool ignoreroot, bool ignorechildren, String DriverName)
{
INode node = m_session.NodeCache.Find(nodeid);
if (node != null)
{
//TreeNode root = new TreeNode(node.ToString());
//root.ImageIndex = ClientUtils.GetImageIndex(m_session, node.NodeClass, node.TypeDefinitionId, false);
//root.SelectedImageIndex = ClientUtils.GetImageIndex(m_session, node.NodeClass, node.TypeDefinitionId, true);
ReferenceDescription reference = new ReferenceDescription();
reference.NodeId = node.NodeId;
reference.NodeClass = node.NodeClass;
reference.BrowseName = node.BrowseName;
reference.DisplayName = node.DisplayName;
reference.TypeDefinition = node.TypeDefinitionId;
// build list of attributes to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
foreach (uint attributeId in Attributes.GetIdentifiers())
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = attributeId;
nodesToRead.Add(nodeToRead);
}
// read the attributes.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
if (ignoreroot == false)
{
//Log(results[0].ToString() + " \t| " + results[3].ToString() + " \t| "+ results[4].ToString() + " \t| " + results[12].ToString());
Log("UID:" + S80(results[(int)Attributes.NodeId - 1].ToString()) + " \tBrowseName: " + s40(results[(int)Attributes.BrowseName - 1].ToString()) + " \tDisplayName: " + s40(results[(int)Attributes.DisplayName - 1].ToString()) + " \tDescription: " + S80(results[(int)Attributes.Description - 1].ToString()) + " \tValue: " + results[(int)Attributes.Value - 1].ToString());
dr = dt.NewRow();
dr["UID"] = results[(int)Attributes.NodeId - 1].ToString();
dr["BrowseName"] = results[(int)Attributes.BrowseName - 1].ToString();
dr["DisplayName"] = results[(int)Attributes.DisplayName - 1].ToString();
dr["Description"] = results[(int)Attributes.Description - 1].ToString();
dr["Value"] = results[(int)Attributes.Value - 1].ToString();
dr["Name"] = DriverName;
dt.Rows.Add(dr);
if (results[(int)Attributes.AccessLevel - 1].Value != null)
{
if (((byte)(results[(int)Attributes.AccessLevel - 1].GetValue(typeof(byte))) & AccessLevels.HistoryRead) == AccessLevels.HistoryRead)
{
//gv.DataSource = dt;
ReadHistory(DateTime.Now.AddDays(-1), DateTime.Now, new NodeId(results[0].ToString()), 25, "");
}
}
}
if (ignorechildren == false)
{
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeid;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HierarchicalReferences;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
nodesToBrowse.Add(nodeToBrowse);
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, null, nodesToBrowse, false);
for (int ii = 0; references != null && ii < references.Count; ii++)
{
reference = references[ii];
// build list of attributes to read.
nodesToRead = new ReadValueIdCollection();
foreach (uint attributeId in Attributes.GetIdentifiers())
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = attributeId;
nodesToRead.Add(nodeToRead);
}
// read the attributes.
results = null;
diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
// Log("UID:"+results[0].ToString() + " \tBrowseName: " + results[(int)Attributes.BrowseName].ToString() + " \tDisplayName: " + results[(int)Attributes.DisplayName].ToString() + " \tDescription: " + results[(int)Attributes.Description].ToString() + " \t| " + results[(int)Attributes.Value].ToString());
//Log("UID:" + S80(results[(int)Attributes.NodeId - 1].ToString()) + " \tBrowseName: " + results[(int)Attributes.BrowseName - 1].ToString() + " \tDisplayName: " + results[(int)Attributes.DisplayName - 1].ToString() + " \tDescription: " + results[(int)Attributes.Description - 1].ToString() + " \tValue: " + results[(int)Attributes.Value - 1].ToString());
Log("UID:" + S80(results[(int)Attributes.NodeId - 1].ToString()) + " \tBrowseName: " + s40(results[(int)Attributes.BrowseName - 1].ToString()) + " \tDisplayName: " + s40(results[(int)Attributes.DisplayName - 1].ToString()) + " \tDescription: " + S80(results[(int)Attributes.Description - 1].ToString()) + " \tValue: " + results[(int)Attributes.Value - 1].ToString());
dr = dt.NewRow();
dr["UID"] = results[(int)Attributes.NodeId - 1].ToString();
dr["BrowseName"] = results[(int)Attributes.BrowseName - 1].ToString();
dr["DisplayName"] = results[(int)Attributes.DisplayName - 1].ToString();
dr["Description"] = results[(int)Attributes.Description - 1].ToString();
dr["Value"] = results[(int)Attributes.Value - 1].ToString();
dt.Rows.Add(dr);
try
{
if (results[(int)Attributes.AccessLevel - 1].Value != null)
{
if (((byte)(results[(int)Attributes.AccessLevel - 1].GetValue(typeof(byte))) & AccessLevels.HistoryRead) == AccessLevels.HistoryRead)
{
//gv.DataSource = dt;
ReadHistory(DateTime.Today, DateTime.Now, new NodeId(results[0].ToString()), 25, "");
}
}
else
{
if (results[(int)Attributes.Value - 1].Value == null)
{
// gv.DataSource = dt;
ReadNode(new NodeId(results[(int)Attributes.NodeId - 1].ToString()), true, false, "");
}
}
}
catch
{
Log("V=" + results[17].ToString());
}
}
}
}
}
/// <summary>
/// Handles the BeforeExpand event of the BrowseTV control.
/// </summary>
private void BrowseTV_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
ReferenceDescription reference = (ReferenceDescription)e.Node.Tag;
e.Node.Nodes.Clear();
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < m_referenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = m_rootId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = m_referenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
nodesToBrowse.Add(nodeToBrowse);
}
// add the childen to the control.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
for (int ii = 0; references != null && ii < references.Count; ii++)
{
reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
TreeNode child = new TreeNode(reference.ToString());
child.Nodes.Add(new TreeNode());
child.Tag = reference;
e.Node.Nodes.Add(child);
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Sends the browse request to the server.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="nodesToBrowse">The nodes to browse.</param>
/// <returns></returns>
private BrowseResultCollection BrowseBlock(Session session, BrowseDescriptionCollection nodesToBrowse)
{
try
{
// Utils.Trace("Browsing {0} Nodes", nodesToBrowse.Count);
ViewDescription view = new ViewDescription();
Dictionary<int,BrowseResult> combinedResults = new Dictionary<int, BrowseResult>();
// initialize the table of indexes used to correlate results.
BrowseDescriptionCollection browseOperations = nodesToBrowse;
List<int> browseIndexes = new List<int>();
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
browseIndexes.Add(ii);
}
BrowseDescriptionCollection unprocessedOperations = new BrowseDescriptionCollection();
List<int> unprocessedBrowseIndexes = new List<int>();
while (browseOperations.Count > 0)
{
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
view,
0,
browseOperations,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, browseOperations);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, browseOperations);
unprocessedOperations.Clear();
unprocessedBrowseIndexes.Clear();
ByteStringCollection continuationPoints = new ByteStringCollection();
List<int> continuationPointIndexes = new List<int>();
for (int ii = 0; ii < browseOperations.Count; ii++)
{
int index = browseIndexes[ii];
// Utils.Trace("{0}/{1}/{2}", browseOperations[ii].NodeId, browseOperations[ii].ReferenceTypeId, results[ii].References.Count);
// look up results.
BrowseResult combinedResult = null;
if (!combinedResults.TryGetValue(index, out combinedResult))
{
combinedResults[index] = combinedResult = new BrowseResult();
}
// 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(browseOperations[ii]);
unprocessedBrowseIndexes.Add(index);
continue;
}
// save error.
if (StatusCode.IsGood(combinedResult.StatusCode))
{
combinedResult.StatusCode = results[ii].StatusCode;
}
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
combinedResult.References.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null && results[ii].ContinuationPoint.Length > 0)
{
continuationPoints.Add(results[ii].ContinuationPoint);
continuationPointIndexes.Add(index);
}
}
// process continuation points.
ByteStringCollection revisedContinuationPoints = new ByteStringCollection();
List<int> revisedContinuationPointIndexes = new List<int>();
while (continuationPoints.Count > 0)
{
bool releaseContinuationPoints = false;
// continue browse operation.
session.BrowseNext(
null,
releaseContinuationPoints,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
revisedContinuationPoints.Clear();
revisedContinuationPointIndexes.Clear();
for (int ii = 0; ii < continuationPoints.Count; ii++)
{
int index = continuationPointIndexes[ii];
// look up results.
BrowseResult combinedResult = null;
if (!combinedResults.TryGetValue(index, out combinedResult))
{
combinedResults[index] = new BrowseResult();
}
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
// save error.
if (StatusCode.IsGood(combinedResult.StatusCode))
{
combinedResult.StatusCode = results[ii].StatusCode;
}
continue;
}
// check if all references have been fetched.
if (results[ii].References.Count == 0)
{
continue;
}
// save results.
combinedResult.References.AddRange(results[ii].References);
// check for continuation point.
if (results[ii].ContinuationPoint != null && results[ii].ContinuationPoint.Length > 0)
{
revisedContinuationPoints.Add(results[ii].ContinuationPoint);
revisedContinuationPointIndexes.Add(index);
}
}
// check if browsing must continue;
continuationPoints = revisedContinuationPoints;
continuationPointIndexes = revisedContinuationPointIndexes;
}
// check if unprocessed results exist.
browseOperations = unprocessedOperations;
browseIndexes = unprocessedBrowseIndexes;
}
// reconstruct list of combined results.
BrowseResultCollection finalResults = new BrowseResultCollection();
for (int ii = 0; ii < nodesToBrowse.Count; ii++)
{
BrowseResult combinedResult = null;
if (!combinedResults.TryGetValue(ii, out combinedResult))
{
combinedResult = new BrowseResult();
}
finalResults.Add(combinedResult);
}
// return complete list.
return finalResults;
}
catch (Exception e)
{
throw ComUtils.CreateComException(e, ResultIds.E_FAIL);
}
}
/// <summary>
/// Sends the browse request to the server.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="nodesToBrowse">The nodes to browse.</param>
/// <returns></returns>
private BrowseResultCollection Browse(Session session, BrowseDescriptionCollection nodesToBrowse)
{
BrowseResultCollection results = null;
// break the request into smaller blocks.
if (m_browseBlockSize > 0 && nodesToBrowse.Count > m_browseBlockSize)
{
results = new BrowseResultCollection();
for (int ii = 0; ii < nodesToBrowse.Count; ii += m_browseBlockSize)
{
BrowseDescriptionCollection x = new BrowseDescriptionCollection();
for (int jj = ii; jj < ii + m_browseBlockSize && jj < nodesToBrowse.Count; jj++)
{
x.Add(nodesToBrowse[jj]);
}
BrowseResultCollection y = BrowseBlock(session, x);
results.AddRange(y);
}
return results;
}
// small enough to do directly.
return BrowseBlock(session, nodesToBrowse);
}
/// <summary>
/// Prepares a browse request for the children of a node.
/// </summary>
/// <param name="nodeId">The node id.</param>
/// <param name="nodesToBrowse">The nodes to browse.</param>
private int PrepareBrowseElementBrowseRequest(
NodeId nodeId,
BrowseDescriptionCollection nodesToBrowse)
{
int index = nodesToBrowse.Count;
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.Organizes;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.DisplayName | BrowseResultMask.BrowseName | BrowseResultMask.NodeClass);
nodesToBrowse.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasChild;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)(NodeClass.Object | NodeClass.Variable);
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.DisplayName | BrowseResultMask.BrowseName | BrowseResultMask.NodeClass);
nodesToBrowse.Add(nodeToBrowse);
return index;
}
/// <summary>
/// Browses the children of the node and updates the tree.
/// </summary>
private bool BrowseChildren(TreeNode parent)
{
ReferenceDescription reference = parent.Tag as ReferenceDescription;
if (reference == null)
{
return false;
}
parent.Nodes.Clear();
if (reference.NodeId.IsAbsolute)
{
return false;
}
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
nodeToBrowse.BrowseDirection = m_browseDirection;
nodeToBrowse.ReferenceTypeId = m_referenceTypeId;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)(int)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
ViewDescription view = null;
if (NodeId.IsNull(m_viewId))
{
view = new ViewDescription();
view.ViewId = m_viewId;
view.Timestamp = DateTime.MinValue;
view.ViewVersion = 0;
}
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Browse(
null,
view,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
if (results.Count != 1 || StatusCode.IsBad(results[0].StatusCode))
{
return false;
}
UpdateNode(parent, results[0].References);
while (results[0].ContinuationPoint != null && results[0].ContinuationPoint.Length > 0)
{
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(results[0].ContinuationPoint);
m_session.BrowseNext(
null,
parent == null,
continuationPoints,
out results,
out diagnosticInfos);
if (results.Count != 1 || StatusCode.IsBad(results[0].StatusCode))
{
return false;
}
UpdateNode(parent, results[0].References);
}
return true;
}
/// <summary>
/// Returns the next reference.
/// </summary>
/// <returns>The next reference that meets the browse criteria.</returns>
public override IReference Next()
{
lock (DataLock)
{
IReference reference = null;
// enumerate pre-defined references.
// always call first to ensure any pushed-back references are returned first.
reference = base.Next();
if (reference != null)
{
return reference;
}
// don't start browsing huge number of references when only internal references are requested.
if (InternalOnly)
{
return null;
}
if (m_stage == Stage.Begin)
{
// construct request.
BrowseDescription nodeToBrowse = new BrowseDescription();
NodeId startId = ObjectIds.ObjectsFolder;
if (m_source != null)
{
startId = m_mapper.ToRemoteId(m_source.NodeId);
}
nodeToBrowse.NodeId = startId;
nodeToBrowse.BrowseDirection = this.BrowseDirection;
nodeToBrowse.ReferenceTypeId = this.ReferenceType;
nodeToBrowse.IncludeSubtypes = this.IncludeSubtypes;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = m_client.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
m_position = 0;
m_references = null;
m_continuationPoint = null;
m_stage = Stage.References;
// check status.
if (StatusCode.IsGood(results[0].StatusCode))
{
m_references = results[0].References;
m_continuationPoint = results[0].ContinuationPoint;
reference = NextChild();
if (reference != null)
{
return reference;
}
}
}
if (m_stage == Stage.References)
{
reference = NextChild();
if (reference != null)
{
return reference;
}
if (m_source == null && IsRequired(ReferenceTypes.HasNotifier, false))
{
// construct request.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = ObjectIds.Server;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = ReferenceTypes.HasNotifier;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = m_client.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
m_position = 0;
m_references = null;
m_continuationPoint = null;
m_stage = Stage.Notifiers;
// check status.
if (StatusCode.IsGood(results[0].StatusCode))
{
m_references = results[0].References;
m_continuationPoint = results[0].ContinuationPoint;
}
}
m_stage = Stage.Notifiers;
}
if (m_stage == Stage.Notifiers)
{
reference = NextChild();
if (reference != null)
{
return reference;
}
m_stage = Stage.Done;
}
// all done.
return null;
}
}
/// <summary>
/// Handles the BeforeExpand event of the BrowseTV control.
/// </summary>
private void BrowseTV_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
ReferenceDescription reference = (ReferenceDescription)e.Node.Tag;
e.Node.Nodes.Clear();
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < m_referenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = m_rootId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = m_referenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
nodesToBrowse.Add(nodeToBrowse);
}
// add the childen to the control.
SortedDictionary<ExpandedNodeId, TreeNode> dictionary = new SortedDictionary<ExpandedNodeId, TreeNode>();
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
for (int ii = 0; references != null && ii < references.Count; ii++)
{
reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
if (dictionary.ContainsKey(reference.NodeId))
{
continue;
}
TreeNode child = new TreeNode(reference.ToString());
child.Nodes.Add(new TreeNode());
child.Tag = reference;
if (!reference.TypeDefinition.IsAbsolute)
{
try
{
if (!m_typeImageMapping.ContainsKey((NodeId)reference.TypeDefinition))
{
List<NodeId> nodeIds = ClientUtils.TranslateBrowsePaths(m_session, (NodeId)reference.TypeDefinition, m_session.NamespaceUris, Opc.Ua.BrowseNames.Icon);
if (nodeIds.Count > 0 && nodeIds[0] != null)
{
DataValue value = m_session.ReadValue(nodeIds[0]);
byte[] bytes = value.Value as byte[];
if (bytes != null)
{
System.IO.MemoryStream istrm = new System.IO.MemoryStream(bytes);
Image icon = Image.FromStream(istrm);
BrowseTV.ImageList.Images.Add(icon);
m_typeImageMapping[(NodeId)reference.TypeDefinition] = BrowseTV.ImageList.Images.Count - 1;
}
}
}
}
catch (Exception exception)
{
Utils.Trace(exception, "Error loading image.");
}
}
int index = 0;
if (!m_typeImageMapping.TryGetValue((NodeId)reference.TypeDefinition, out index))
{
child.ImageIndex = ClientUtils.GetImageIndex(m_session, reference.NodeClass, reference.TypeDefinition, false);
child.SelectedImageIndex = ClientUtils.GetImageIndex(m_session, reference.NodeClass, reference.TypeDefinition, true);
}
else
{
child.ImageIndex = index;
child.SelectedImageIndex = index;
}
dictionary[reference.NodeId] = child;
}
// add nodes to tree.
foreach (TreeNode node in dictionary.Values.OrderBy(i => i.Text))
{
e.Node.Nodes.Add(node);
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Invokes the Browse service.
/// </summary>
/// <param name="requestHeader">The request header.</param>
/// <param name="view">The view to browse.</param>
/// <param name="nodeToBrowse">The node to browse.</param>
/// <param name="maxResultsToReturn">The maximum number of returned values.</param>
/// <param name="browseDirection">The browse direction.</param>
/// <param name="referenceTypeId">The reference type id.</param>
/// <param name="includeSubtypes">If set to <c>true</c> the subtypes of the ReferenceType will be included in the browse.</param>
/// <param name="nodeClassMask">The node class mask.</param>
/// <param name="continuationPoint">The continuation point.</param>
/// <param name="references">The list of node references.</param>
/// <returns></returns>
public virtual ResponseHeader Browse(
RequestHeader requestHeader,
ViewDescription view,
NodeId nodeToBrowse,
uint maxResultsToReturn,
BrowseDirection browseDirection,
NodeId referenceTypeId,
bool includeSubtypes,
uint nodeClassMask,
out byte[] continuationPoint,
out ReferenceDescriptionCollection references)
{
BrowseDescription description = new BrowseDescription();
description.NodeId = nodeToBrowse;
description.BrowseDirection = browseDirection;
description.ReferenceTypeId = referenceTypeId;
description.IncludeSubtypes = includeSubtypes;
description.NodeClassMask = nodeClassMask;
description.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(description);
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
ResponseHeader responseHeader = Browse(
requestHeader,
view,
maxResultsToReturn,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(new ServiceResult(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable));
}
continuationPoint = results[0].ContinuationPoint;
references = results[0].References;
return responseHeader;
}
/// <summary>
/// Displays the attributes and properties in the attributes view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
private void DisplayAttributes(NodeId sourceId)
{
try
{
AttributesView.Items.Clear();
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// attempt to read all possible attributes.
for (uint ii = Attributes.NodeClass; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = Browse(m_server, nodesToBrowse, false);
if (references == null)
{
return;
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
OperationContext context = new OperationContext(new RequestHeader(), RequestType.Browse);
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_server.CurrentInstance.NodeManager.Read(
context,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ListViewItem idnode = new ListViewItem("NodeID");
idnode.SubItems.Add(sourceId.ToString());
AttributesView.Items.Add(idnode);
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
string name = null;
string datatype = null;
string value = null;
// process attribute value.
if (ii < startOfProperties)
{
// ignore attributes which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
// get the name of the attribute.
name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = Utils.Format("{0}", Attributes.GetDataTypeId(nodesToRead[ii].AttributeId));
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// process property value.
else
{
// ignore properties which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadNodeIdUnknown)
{
continue;
}
// get the name of the property.
name = Utils.Format("{0}", references[ii - startOfProperties]);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = String.Empty;
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// add the attribute name/value to the list view.
ListViewItem item = new ListViewItem(name);
item.SubItems.Add(value);
item.SubItems.Add(datatype);
AttributesView.Items.Add(item);
}
// adjust width of all columns.
for (int ii = 0; ii < AttributesView.Columns.Count; ii++)
{
AttributesView.Columns[ii].Width = -2;
}
}
catch (Exception exception)
{
ServerUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Reads the arguments for the method.
/// </summary>
private void ReadArguments(NodeId nodeId)
{
m_inputArguments = null;
m_outputArguments = null;
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.BrowseName;
nodesToBrowse.Add(nodeToBrowse);
// find properties.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, null, nodesToBrowse, false);
// build list of properties to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; references != null && ii < references.Count; ii++)
{
ReferenceDescription reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
// ignore other properties.
if (reference.BrowseName != Opc.Ua.BrowseNames.InputArguments && reference.BrowseName != Opc.Ua.BrowseNames.OutputArguments)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodeToRead.Handle = reference;
nodesToRead.Add(nodeToRead);
}
// method has no arguments.
if (nodesToRead.Count == 0)
{
return;
}
// read the arguments.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// save the results.
for (int ii = 0; ii < results.Count; ii++)
{
ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle;
if (StatusCode.IsGood(results[ii].StatusCode))
{
if (reference.BrowseName == Opc.Ua.BrowseNames.InputArguments)
{
m_inputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue<ExtensionObject[]>(null), typeof(Argument));
}
if (reference.BrowseName == Opc.Ua.BrowseNames.OutputArguments)
{
m_outputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue<ExtensionObject[]>(null), typeof(Argument));
}
}
}
// set default values for input arguments.
if (m_inputArguments != null)
{
foreach (Argument argument in m_inputArguments)
{
argument.Value = TypeInfo.GetDefaultValue(argument.DataType, argument.ValueRank, m_session.TypeTree);
}
}
}
/// <summary>
/// Browses the address space and returns the references found.
/// </summary>
public static ReferenceDescriptionCollection Browse(Session session, ViewDescription view, BrowseDescription nodeToBrowse, bool throwOnError)
{
try
{
ReferenceDescriptionCollection references = new ReferenceDescriptionCollection();
// construct browse request.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// 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);
do
{
// check for error.
if (StatusCode.IsBad(results[0].StatusCode))
{
throw new ServiceResultException(results[0].StatusCode);
}
// process results.
for (int ii = 0; ii < results[0].References.Count; ii++)
{
references.Add(results[0].References[ii]);
}
// check if all references have been fetched.
if (results[0].References.Count == 0 || results[0].ContinuationPoint == null)
{
break;
}
// continue browse operation.
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(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);
}
}
/// <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 verifies the results.
/// </summary>
private bool Browse(
List<Node> nodes,
BrowseDescriptionCollection nodesToBrowse,
List<ReferenceDescriptionCollection> references)
{
BrowseResultCollection results;
DiagnosticInfoCollection diagnosticInfos;
RequestHeader requestHeader = new RequestHeader();
requestHeader.ReturnDiagnostics = 0;
Session.Browse(
requestHeader,
m_view,
m_maxReferencesPerNode,
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;
}
List<Node> originalNodes = nodes;
BrowseDescriptionCollection originalNodesToBrowse = nodesToBrowse;
List<ReferenceDescriptionCollection> originalReferences = references;
List<Node> remainingNodes = new List<Node>();
BrowseDescriptionCollection remainingNodesToBrowse = new BrowseDescriptionCollection();
List<ReferenceDescriptionCollection> remainingReferences = new List<ReferenceDescriptionCollection>();
ByteStringCollection continuationPoints = new ByteStringCollection();
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
// check status code.
if (StatusCode.IsBad(results[ii].StatusCode))
{
Log(
"HierarchicalBrowseTest Failed for Node '{0}'. Status = {2}, NodeId = {1}",
nodes[ii],
nodes[ii].NodeId,
results[ii].StatusCode);
return false;
}
// check max references.
if (m_maxReferencesPerNode > 0 && m_maxReferencesPerNode < results[ii].References.Count)
{
Log(
"Too many references returned for Node '{0}'. NodeId = {1}, Expected = {2}, Actual = {3}",
nodes[ii],
nodes[ii].NodeId,
m_maxReferencesPerNode,
results[ii].References.Count);
return false;
}
// verify references returned.
if (!VerifyReferences(nodes[ii], nodesToBrowse[ii], results[ii].References))
{
return false;
}
// save references.
references[ii].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}, Expected = {2}",
nodes[ii],
nodes[ii].NodeId,
m_maxReferencesPerNode);
return false;
}
// add to list to rebrowse.
remainingNodes.Add(nodes[ii]);
remainingNodesToBrowse.Add(nodesToBrowse[ii]);
remainingReferences.Add(references[ii]);
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;
}
nodes = remainingNodes;
nodesToBrowse = remainingNodesToBrowse;
references = remainingReferences;
// process results.
remainingNodes = new List<Node>();
remainingNodesToBrowse = new BrowseDescriptionCollection();
remainingReferences = new List<ReferenceDescriptionCollection>();
continuationPoints = new ByteStringCollection();
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}",
nodes[ii],
nodes[ii].NodeId,
results[ii].StatusCode);
return false;
}
// check max references.
if (m_maxReferencesPerNode > 0 && m_maxReferencesPerNode < results[ii].References.Count)
{
Log(
"Too many references returned for Node '{0}'. NodeId = {1}, Expected = {2}, Actual = {3}",
nodes[ii],
nodes[ii].NodeId,
m_maxReferencesPerNode,
results[ii].References.Count);
return false;
}
// verify references returned.
if (!VerifyReferences(nodes[ii], nodesToBrowse[ii], results[ii].References))
{
return false;
}
// save references.
references[ii].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}, Expected = {2}",
nodes[ii],
nodes[ii].NodeId,
m_maxReferencesPerNode);
return false;
}
// add to list to rebrowse.
remainingNodes.Add(nodes[ii]);
remainingNodesToBrowse.Add(nodesToBrowse[ii]);
remainingReferences.Add(references[ii]);
continuationPoints.Add(results[ii].ContinuationPoint);
}
}
}
// verify filters.
for (int ii = 0; ii < originalNodes.Count; ii++)
{
if (!VerifyFilterResults(originalNodes[ii], originalNodesToBrowse[ii], originalReferences[ii]))
{
return false;
}
}
return true;
}
/// <summary>
/// Reads the properties for the node.
/// </summary>
private void ReadProperties(NodeId nodeId)
{
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
// find properties.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
// build list of properties to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; references != null && ii < references.Count; ii++)
{
ReferenceDescription reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodeToRead.Handle = reference;
nodesToRead.Add(nodeToRead);
}
if (nodesToRead.Count == 0)
{
return;
}
// read the properties.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// add the results to the display.
for (int ii = 0; ii < results.Count; ii++)
{
ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle;
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
// add the metadata for the attribute.
ListViewItem item = new ListViewItem(reference.ToString());
item.SubItems.Add(typeInfo.BuiltInType.ToString());
if (typeInfo.ValueRank >= 0)
{
item.SubItems[1].Text += "[]";
}
// add the value.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.SubItems.Add(results[ii].StatusCode.ToString());
}
else
{
item.SubItems.Add(results[ii].WrappedValue.ToString());
}
item.Tag = results[ii];
// display in list.
AttributesLV.Items.Add(item);
}
// set the column widths.
for (int ii = 0; ii < AttributesLV.Columns.Count; ii++)
{
AttributesLV.Columns[ii].Width = -2;
}
}
/// <summary>
/// Browses the node and verifies the results.
/// </summary>
protected override bool Browse(
Node node,
BrowseDescription nodeToBrowse,
ReferenceDescriptionCollection references)
{
List<Node> nodes = new List<Node>();
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
List<ReferenceDescriptionCollection> referenceLists = new List<ReferenceDescriptionCollection>();
nodes.Add(node);
nodesToBrowse.Add(nodeToBrowse);
referenceLists.Add(references);
return Browse(nodes, nodesToBrowse, referenceLists);
}
/// <summary>
/// Displays the attributes and properties in the attributes view.
/// </summary>
/// <param name="sourceId">The NodeId of the Node to browse.</param>
private void DisplayAttributes(NodeId sourceId)
{
try
{
AttributesLV.Items.Clear();
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
// attempt to read all possible attributes.
for (uint ii = Attributes.NodeClass; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription();
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return;
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// process results.
for (int ii = 0; ii < results.Count; ii++)
{
string name = null;
string datatype = null;
string value = null;
// process attribute value.
if (ii < startOfProperties)
{
// ignore attributes which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
// get the name of the attribute.
name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = Utils.Format("{0}", Attributes.GetDataTypeId(nodesToRead[ii].AttributeId));
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// process property value.
else
{
// ignore properties which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadNodeIdUnknown)
{
continue;
}
// get the name of the property.
name = Utils.Format("{0}", references[ii-startOfProperties]);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
datatype = String.Empty;
value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
datatype = typeInfo.BuiltInType.ToString();
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
datatype += "[]";
}
value = Utils.Format("{0}", results[ii].Value);
}
}
// add the attribute name/value to the list view.
ListViewItem item = new ListViewItem(name);
item.SubItems.Add(datatype);
item.SubItems.Add(value);
AttributesLV.Items.Add(item);
}
// adjust width of all columns.
for (int ii = 0; ii < AttributesLV.Columns.Count; ii++)
{
AttributesLV.Columns[ii].Width = -2;
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// 读取一个节点的所有属性
/// </summary>
/// <param name="tag">节点值</param>
/// <returns>所有的数据</returns>
public DataValue[] ReadNoteDataValueAttributes(string tag)
{
NodeId sourceId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection( );
// attempt to read all possible attributes.
// 尝试着去读取所有可能的特性
for (uint ii = Attributes.NodeId; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId( );
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription( );
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection( );
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return(new DataValue[0]);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId( );
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
return(results.ToArray( ));
}
static void Browse(Session session)
{
DiagnosticInfoCollection diagnosticInfos;
BrowseDescriptionCollection bc = new BrowseDescriptionCollection();
BrowseDescription bd = new BrowseDescription();
bd.BrowseDirection = BrowseDirection.Forward;
NodeId nodeId = Opc.Ua.Objects.ObjectsFolder;
do
{
Console.WriteLine("\n Enter nodeId to Browse (or q to exit)");
string s = Console.ReadLine();
if (s == "q")
break;
if (s.Length == 0)
{
nodeId = Opc.Ua.Objects.ObjectsFolder;
}
else
nodeId = new NodeId(s);
bc.Clear();
bd.NodeId = nodeId;
bc.Add(bd);
BrowseResultCollection results;
ResponseHeader rh =
session.Browse(null, null, 100, bc, out results, out diagnosticInfos);
foreach ( BrowseResult res in results)
{
foreach (ReferenceDescription rdc in res.References)
{
Console.WriteLine(String.Format(" Node = {0} (namespace {1}) {2}", rdc.NodeId.ToString(),rdc.NodeId.NamespaceIndex, Environment.NewLine));
}
}
} while (true);
}
/// <summary>
/// Returns the next reference.
/// </summary>
/// <returns>The next reference that meets the browse criteria.</returns>
public override IReference Next()
{
lock (DataLock)
{
IReference reference = null;
// enumerate pre-defined references.
// always call first to ensure any pushed-back references are returned first.
reference = base.Next();
if (reference != null)
{
return(reference);
}
// don't start browsing huge number of references when only internal references are requested.
if (InternalOnly)
{
return(null);
}
if (m_stage == Stage.Begin)
{
// construct request.
BrowseDescription nodeToBrowse = new BrowseDescription();
NodeId startId = ObjectIds.ObjectsFolder;
if (m_source != null)
{
startId = m_mapper.ToRemoteId(m_source.NodeId);
}
nodeToBrowse.NodeId = startId;
nodeToBrowse.BrowseDirection = this.BrowseDirection;
nodeToBrowse.ReferenceTypeId = this.ReferenceType;
nodeToBrowse.IncludeSubtypes = this.IncludeSubtypes;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = m_client.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
m_position = 0;
m_references = null;
m_continuationPoint = null;
m_stage = Stage.References;
// check status.
if (StatusCode.IsGood(results[0].StatusCode))
{
m_references = results[0].References;
m_continuationPoint = results[0].ContinuationPoint;
reference = NextChild();
if (reference != null)
{
return(reference);
}
}
}
if (m_stage == Stage.References)
{
reference = NextChild();
if (reference != null)
{
return(reference);
}
if (m_source == null && IsRequired(ReferenceTypes.HasNotifier, false))
{
// construct request.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = ObjectIds.Server;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = ReferenceTypes.HasNotifier;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = m_client.Browse(
null,
null,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
m_position = 0;
m_references = null;
m_continuationPoint = null;
m_stage = Stage.Notifiers;
// check status.
if (StatusCode.IsGood(results[0].StatusCode))
{
m_references = results[0].References;
m_continuationPoint = results[0].ContinuationPoint;
}
}
m_stage = Stage.Notifiers;
}
if (m_stage == Stage.Notifiers)
{
reference = NextChild();
if (reference != null)
{
return(reference);
}
m_stage = Stage.Done;
}
// all done.
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>
/// Creates a browse description for a node class test.
/// </summary>
private void AddReferenceTypeTest(
Node node,
NodeId referenceTypeId,
bool isInverse,
bool includeSubtypes,
List<Node> nodes,
BrowseDescriptionCollection nodesToBrowse,
List<ReferenceDescriptionCollection> references,
bool clearLists)
{
if (clearLists)
{
nodes.Clear();
nodesToBrowse.Clear();
references.Clear();
}
nodes.Add(node);
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = node.NodeId;
nodeToBrowse.ReferenceTypeId = referenceTypeId;
nodeToBrowse.IncludeSubtypes = includeSubtypes;
nodeToBrowse.BrowseDirection = (isInverse)?BrowseDirection.Inverse:BrowseDirection.Forward;
nodeToBrowse.NodeClassMask = (uint)NodeClass.Unspecified;
nodeToBrowse.ResultMask = (uint)(BrowseResultMask.DisplayName | BrowseResultMask.NodeClass | BrowseResultMask.ReferenceTypeId | BrowseResultMask.IsForward);
nodesToBrowse.Add(nodeToBrowse);
references.Add(new ReferenceDescriptionCollection());
}
/// <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 children of the node and updates the tree.
/// </summary>
private bool BrowseChildren(TreeNode parent)
{
ReferenceDescription reference = parent.Tag as ReferenceDescription;
if (reference == null)
{
return(false);
}
parent.Nodes.Clear();
if (reference.NodeId.IsAbsolute)
{
return(false);
}
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
nodeToBrowse.BrowseDirection = m_browseDirection;
nodeToBrowse.ReferenceTypeId = m_referenceTypeId;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)(int)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
ViewDescription view = null;
if (NodeId.IsNull(m_viewId))
{
view = new ViewDescription();
view.ViewId = m_viewId;
view.Timestamp = DateTime.MinValue;
view.ViewVersion = 0;
}
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Browse(
null,
view,
0,
nodesToBrowse,
out results,
out diagnosticInfos);
if (results.Count != 1 || StatusCode.IsBad(results[0].StatusCode))
{
return(false);
}
UpdateNode(parent, results[0].References);
while (results[0].ContinuationPoint != null && results[0].ContinuationPoint.Length > 0)
{
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(results[0].ContinuationPoint);
m_session.BrowseNext(
null,
parent == null,
continuationPoints,
out results,
out diagnosticInfos);
if (results.Count != 1 || StatusCode.IsBad(results[0].StatusCode))
{
return(false);
}
UpdateNode(parent, results[0].References);
}
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>
/// Fetches the references for the node.
/// </summary>
private List<ReferenceDescription> Browse(Session session, NodeId nodeId)
{
List<ReferenceDescription> references = new List<ReferenceDescription>();
// specify the references to follow and the fields to return.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds.References;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.BrowseDirection = BrowseDirection.Both;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = session.Browse(
null,
null,
2,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
// check status.
if (StatusCode.IsBad(results[0].StatusCode))
{
// embed the diagnostic information in a exception.
throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable);
}
// add first batch.
references.AddRange(results[0].References);
// check if server limited the results.
while (results[0].ContinuationPoint != null && results[0].ContinuationPoint.Length > 0)
{
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(results[0].ContinuationPoint);
// continue browse operation.
responseHeader = session.BrowseNext(
null,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
// check status.
if (StatusCode.IsBad(results[0].StatusCode))
{
// embed the diagnostic information in a exception.
throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable);
}
// add next batch.
references.AddRange(results[0].References);
}
return references;
}
/// <summary>
/// Finds the targets for the specified reference.
/// </summary>
private static List <NodeId> FindTargetOfReference(Session session, List <NodeId> nodeIds, NodeId referenceTypeId, bool throwOnError)
{
try
{
// construct browse request.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < nodeIds.Count; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeIds[ii];
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = referenceTypeId;
nodeToBrowse.IncludeSubtypes = false;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.None;
nodesToBrowse.Add(nodeToBrowse);
}
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
null,
1,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
List <NodeId> targetIds = new List <NodeId>();
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < nodeIds.Count; ii++)
{
targetIds.Add(null);
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
continue;
}
// check for continuation point.
if (results[ii].ContinuationPoint != null && results[ii].ContinuationPoint.Length > 0)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
// get the node id.
if (results[ii].References.Count > 0)
{
if (NodeId.IsNull(results[ii].References[0].NodeId) || results[ii].References[0].NodeId.IsAbsolute)
{
continue;
}
targetIds[ii] = (NodeId)results[ii].References[0].NodeId;
}
}
// release continuation points.
if (continuationPoints.Count > 0)
{
session.BrowseNext(
null,
true,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
}
//return complete list.
return(targetIds);
}
catch (Exception exception)
{
if (throwOnError)
{
throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError);
}
return(null);
}
}
private static BrowseDescriptionCollection PrepareBrowseDescriptionCollection(
NodeId nodeId, uint nodeClassMask)
{
// We do not inspect all references, but only organize and HasComponent.
BrowseDescriptionCollection browseDescriptionCollection = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription()
{
NodeId = nodeId,
ReferenceTypeId = ReferenceTypeIds.Organizes,
IncludeSubtypes = true,
BrowseDirection = BrowseDirection.Forward,
NodeClassMask = nodeClassMask,
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription()
{
NodeId = nodeId,
ReferenceTypeId = ReferenceTypeIds.HasComponent,
IncludeSubtypes = true,
BrowseDirection = BrowseDirection.Forward,
NodeClassMask = nodeClassMask,
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription()
{
NodeId = nodeId,
ReferenceTypeId = ReferenceTypeIds.HasChild,
IncludeSubtypes = true,
BrowseDirection = BrowseDirection.Forward,
NodeClassMask = nodeClassMask,
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription()
{
NodeId = nodeId,
ReferenceTypeId = ReferenceTypeIds.HasDescription,
IncludeSubtypes = true,
BrowseDirection = BrowseDirection.Forward,
NodeClassMask = nodeClassMask,
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription()
{
NodeId = nodeId,
ReferenceTypeId = ReferenceTypeIds.HasProperty,
IncludeSubtypes = true,
BrowseDirection = BrowseDirection.Forward,
NodeClassMask = nodeClassMask,
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
nodeToBrowse = new BrowseDescription
{
NodeId = nodeId,
BrowseDirection = BrowseDirection.Forward,
ReferenceTypeId = ReferenceTypeIds.HasProperty,
IncludeSubtypes = true,
NodeClassMask = (uint)(NodeClass.Variable | NodeClass.Object),
ResultMask = (uint)BrowseResultMask.All
};
browseDescriptionCollection.Add(nodeToBrowse);
return(browseDescriptionCollection);
}
/// <summary>
/// Reads the arguments for the method.
/// </summary>
private void ReadArguments(NodeId nodeId)
{
m_inputArguments = null;
m_outputArguments = null;
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.HasProperty;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = (uint)NodeClass.Variable;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.BrowseName;
nodesToBrowse.Add(nodeToBrowse);
// find properties.
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, null, nodesToBrowse, false);
// build list of properties to read.
ReadValueIdCollection nodesToRead = new ReadValueIdCollection();
for (int ii = 0; references != null && ii < references.Count; ii++)
{
ReferenceDescription reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
// ignore other properties.
if (reference.BrowseName != Opc.Ua.BrowseNames.InputArguments && reference.BrowseName != Opc.Ua.BrowseNames.OutputArguments)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId();
nodeToRead.NodeId = (NodeId)reference.NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodeToRead.Handle = reference;
nodesToRead.Add(nodeToRead);
}
// method has no arguments.
if (nodesToRead.Count == 0)
{
return;
}
// read the arguments.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// save the results.
for (int ii = 0; ii < results.Count; ii++)
{
ReferenceDescription reference = (ReferenceDescription)nodesToRead[ii].Handle;
if (StatusCode.IsGood(results[ii].StatusCode))
{
if (reference.BrowseName == Opc.Ua.BrowseNames.InputArguments)
{
m_inputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue <ExtensionObject[]>(null), typeof(Argument));
}
if (reference.BrowseName == Opc.Ua.BrowseNames.OutputArguments)
{
m_outputArguments = (Argument[])ExtensionObject.ToArray(results[ii].GetValue <ExtensionObject[]>(null), typeof(Argument));
}
}
}
// set default values for input arguments.
if (m_inputArguments != null)
{
foreach (Argument argument in m_inputArguments)
{
argument.Value = TypeInfo.GetDefaultValue(argument.DataType, argument.ValueRank, m_session.TypeTree);
}
}
}
/// <summary>
/// Gets the list of references to follow.
/// </summary>
private BrowseDescriptionCollection CreateNodesToBrowse()
{
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
if (ReferenceTypeIds != null && ReferenceTypeIds.Length > 0)
{
for (int ii = 0; ii < ReferenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
}
}
else
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = NodeId;
nodeToBrowse.BrowseDirection = BrowseDirection;
nodeToBrowse.ReferenceTypeId = Opc.Ua.ReferenceTypeIds.References;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
nodesToBrowse.Add(nodeToBrowse);
}
return nodesToBrowse;
}
/// <summary>
/// 读取一个节点的所有属性
/// </summary>
/// <param name="tag">节点信息</param>
/// <returns>节点的特性值</returns>
public OpcNodeAttribute[] ReadNoteAttributes(string tag)
{
NodeId sourceId = new NodeId(tag);
ReadValueIdCollection nodesToRead = new ReadValueIdCollection( );
// attempt to read all possible attributes.
// 尝试着去读取所有可能的特性
for (uint ii = Attributes.NodeClass; ii <= Attributes.UserExecutable; ii++)
{
ReadValueId nodeToRead = new ReadValueId( );
nodeToRead.NodeId = sourceId;
nodeToRead.AttributeId = ii;
nodesToRead.Add(nodeToRead);
}
int startOfProperties = nodesToRead.Count;
// find all of the pror of the node.
BrowseDescription nodeToBrowse1 = new BrowseDescription( );
nodeToBrowse1.NodeId = sourceId;
nodeToBrowse1.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse1.ReferenceTypeId = ReferenceTypeIds.HasProperty;
nodeToBrowse1.IncludeSubtypes = true;
nodeToBrowse1.NodeClassMask = 0;
nodeToBrowse1.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection( );
nodesToBrowse.Add(nodeToBrowse1);
// fetch property references from the server.
ReferenceDescriptionCollection references = FormUtils.Browse(m_session, nodesToBrowse, false);
if (references == null)
{
return(new OpcNodeAttribute[0]);
}
for (int ii = 0; ii < references.Count; ii++)
{
// ignore external references.
if (references[ii].NodeId.IsAbsolute)
{
continue;
}
ReadValueId nodeToRead = new ReadValueId( );
nodeToRead.NodeId = (NodeId)references[ii].NodeId;
nodeToRead.AttributeId = Attributes.Value;
nodesToRead.Add(nodeToRead);
}
// read all values.
DataValueCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
m_session.Read(
null,
0,
TimestampsToReturn.Neither,
nodesToRead,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToRead);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToRead);
// process results.
List <OpcNodeAttribute> nodeAttribute = new List <OpcNodeAttribute>( );
for (int ii = 0; ii < results.Count; ii++)
{
OpcNodeAttribute item = new OpcNodeAttribute( );
// process attribute value.
if (ii < startOfProperties)
{
// ignore attributes which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadAttributeIdInvalid)
{
continue;
}
// get the name of the attribute.
item.Name = Attributes.GetBrowseName(nodesToRead[ii].AttributeId);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.Type = Utils.Format("{0}", Attributes.GetDataTypeId(nodesToRead[ii].AttributeId));
item.Value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
item.Type = typeInfo.BuiltInType.ToString( );
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
item.Type += "[]";
}
item.Value = results[ii].Value;//Utils.Format("{0}", results[ii].Value);
}
}
// process property value.
else
{
// ignore properties which are invalid for the node.
if (results[ii].StatusCode == StatusCodes.BadNodeIdUnknown)
{
continue;
}
// get the name of the property.
item.Name = Utils.Format("{0}", references[ii - startOfProperties]);
// display any unexpected error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
item.Type = String.Empty;
item.Value = Utils.Format("{0}", results[ii].StatusCode);
}
// display the value.
else
{
TypeInfo typeInfo = TypeInfo.Construct(results[ii].Value);
item.Type = typeInfo.BuiltInType.ToString( );
if (typeInfo.ValueRank >= ValueRanks.OneOrMoreDimensions)
{
item.Type += "[]";
}
item.Value = results[ii].Value; //Utils.Format("{0}", results[ii].Value);
}
}
nodeAttribute.Add(item);
}
return(nodeAttribute.ToArray( ));
}
/// <summary>
/// Fetches the references for the node.
/// </summary>
private List <ReferenceDescription> Browse(Session session, NodeId nodeId)
{
List <ReferenceDescription> references = new List <ReferenceDescription>();
// specify the references to follow and the fields to return.
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeId;
nodeToBrowse.ReferenceTypeId = ReferenceTypeIds.References;
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.BrowseDirection = BrowseDirection.Both;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
nodesToBrowse.Add(nodeToBrowse);
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
ResponseHeader responseHeader = session.Browse(
null,
null,
2,
nodesToBrowse,
out results,
out diagnosticInfos);
// these do sanity checks on the result - make sure response matched the request.
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
// check status.
if (StatusCode.IsBad(results[0].StatusCode))
{
// embed the diagnostic information in a exception.
throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable);
}
// add first batch.
references.AddRange(results[0].References);
// check if server limited the results.
while (results[0].ContinuationPoint != null && results[0].ContinuationPoint.Length > 0)
{
ByteStringCollection continuationPoints = new ByteStringCollection();
continuationPoints.Add(results[0].ContinuationPoint);
// continue browse operation.
responseHeader = session.BrowseNext(
null,
false,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, continuationPoints);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, continuationPoints);
// check status.
if (StatusCode.IsBad(results[0].StatusCode))
{
// embed the diagnostic information in a exception.
throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable);
}
// add next batch.
references.AddRange(results[0].References);
}
return(references);
}
/// <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 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>
/// Handles the BeforeExpand event of the BrowseTV control.
/// </summary>
private void BrowseTV_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
ReferenceDescription reference = (ReferenceDescription)e.Node.Tag;
e.Node.Nodes.Clear();
// build list of references to browse.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < m_referenceTypeIds.Length; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = m_rootId;
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = m_referenceTypeIds[ii];
nodeToBrowse.IncludeSubtypes = true;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.All;
if (reference != null)
{
nodeToBrowse.NodeId = (NodeId)reference.NodeId;
}
nodesToBrowse.Add(nodeToBrowse);
}
// add the childen to the control.
SortedDictionary <ExpandedNodeId, TreeNode> dictionary = new SortedDictionary <ExpandedNodeId, TreeNode>();
ReferenceDescriptionCollection references = ClientUtils.Browse(m_session, View, nodesToBrowse, false);
for (int ii = 0; references != null && ii < references.Count; ii++)
{
reference = references[ii];
// ignore out of server references.
if (reference.NodeId.IsAbsolute)
{
continue;
}
if (dictionary.ContainsKey(reference.NodeId))
{
continue;
}
TreeNode child = new TreeNode(reference.ToString());
child.Nodes.Add(new TreeNode());
child.Tag = reference;
if (!reference.TypeDefinition.IsAbsolute)
{
try
{
if (!m_typeImageMapping.ContainsKey((NodeId)reference.TypeDefinition))
{
List <NodeId> nodeIds = ClientUtils.TranslateBrowsePaths(m_session, (NodeId)reference.TypeDefinition, m_session.NamespaceUris, Opc.Ua.BrowseNames.Icon);
if (nodeIds.Count > 0 && nodeIds[0] != null)
{
DataValue value = m_session.ReadValue(nodeIds[0]);
byte[] bytes = value.Value as byte[];
if (bytes != null)
{
System.IO.MemoryStream istrm = new System.IO.MemoryStream(bytes);
Image icon = Image.FromStream(istrm);
BrowseTV.ImageList.Images.Add(icon);
m_typeImageMapping[(NodeId)reference.TypeDefinition] = BrowseTV.ImageList.Images.Count - 1;
}
}
}
}
catch (Exception exception)
{
Utils.Trace(exception, "Error loading image.");
}
}
int index = 0;
if (!m_typeImageMapping.TryGetValue((NodeId)reference.TypeDefinition, out index))
{
child.ImageIndex = ClientUtils.GetImageIndex(m_session, reference.NodeClass, reference.TypeDefinition, false);
child.SelectedImageIndex = ClientUtils.GetImageIndex(m_session, reference.NodeClass, reference.TypeDefinition, true);
}
else
{
child.ImageIndex = index;
child.SelectedImageIndex = index;
}
dictionary[reference.NodeId] = child;
}
// add nodes to tree.
foreach (TreeNode node in dictionary.Values.OrderBy(i => i.Text))
{
e.Node.Nodes.Add(node);
}
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Finds the targets for the specified reference.
/// </summary>
private static List<NodeId> FindTargetOfReference(Session session, List<NodeId> nodeIds, NodeId referenceTypeId, bool throwOnError)
{
try
{
// construct browse request.
BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection();
for (int ii = 0; ii < nodeIds.Count; ii++)
{
BrowseDescription nodeToBrowse = new BrowseDescription();
nodeToBrowse.NodeId = nodeIds[ii];
nodeToBrowse.BrowseDirection = BrowseDirection.Forward;
nodeToBrowse.ReferenceTypeId = referenceTypeId;
nodeToBrowse.IncludeSubtypes = false;
nodeToBrowse.NodeClassMask = 0;
nodeToBrowse.ResultMask = (uint)BrowseResultMask.None;
nodesToBrowse.Add(nodeToBrowse);
}
// start the browse operation.
BrowseResultCollection results = null;
DiagnosticInfoCollection diagnosticInfos = null;
session.Browse(
null,
null,
1,
nodesToBrowse,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
List<NodeId> targetIds = new List<NodeId>();
ByteStringCollection continuationPoints = new ByteStringCollection();
for (int ii = 0; ii < nodeIds.Count; ii++)
{
targetIds.Add(null);
// check for error.
if (StatusCode.IsBad(results[ii].StatusCode))
{
continue;
}
// check for continuation point.
if (results[ii].ContinuationPoint != null && results[ii].ContinuationPoint.Length > 0)
{
continuationPoints.Add(results[ii].ContinuationPoint);
}
// get the node id.
if (results[ii].References.Count > 0)
{
if (NodeId.IsNull(results[ii].References[0].NodeId) || results[ii].References[0].NodeId.IsAbsolute)
{
continue;
}
targetIds[ii] = (NodeId)results[ii].References[0].NodeId;
}
}
// release continuation points.
if (continuationPoints.Count > 0)
{
session.BrowseNext(
null,
true,
continuationPoints,
out results,
out diagnosticInfos);
ClientBase.ValidateResponse(results, nodesToBrowse);
ClientBase.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse);
}
//return complete list.
return targetIds;
}
catch (Exception exception)
{
if (throwOnError)
{
throw new ServiceResultException(exception, StatusCodes.BadUnexpectedError);
}
return null;
}
}
