public async Task Polling()
{
var channel = new ClientSessionChannel(
localDescription,
certificateStore,
new AnonymousIdentity(),
EndpointUrl,
loggerFactory: loggerFactory);
await channel.OpenAsync();
logger.LogInformation($"Opened session with endpoint '{channel.RemoteEndpoint.EndpointUrl}'.");
logger.LogInformation($"SecurityPolicy: '{channel.RemoteEndpoint.SecurityPolicyUri}'.");
logger.LogInformation($"SecurityMode: '{channel.RemoteEndpoint.SecurityMode}'.");
logger.LogInformation($"Activated session '{channel.SessionId}'.");
var readRequest = new ReadRequest {
NodesToRead = new[] { new ReadValueId {
NodeId = NodeId.Parse(VariableIds.Server_ServerStatus_CurrentTime), AttributeId = AttributeIds.Value
} }
};
for (int i = 0; i < 10; i++)
{
var readResult = await channel.ReadAsync(readRequest);
logger.LogInformation("Read {0}", readResult.Results[0].GetValueOrDefault <DateTime>());
await Task.Delay(1000);
}
logger.LogInformation($"Closing session '{channel.SessionId}'.");
await channel.CloseAsync();
}
public async Task Read()
{
var channel = new ClientSessionChannel(
localDescription,
certificateStore,
new AnonymousIdentity(),
EndpointUrl,
loggerFactory: loggerFactory);
await channel.OpenAsync();
logger.LogInformation($"Opened session with endpoint '{channel.RemoteEndpoint.EndpointUrl}'.");
logger.LogInformation($"SecurityPolicy: '{channel.RemoteEndpoint.SecurityPolicyUri}'.");
logger.LogInformation($"SecurityMode: '{channel.RemoteEndpoint.SecurityMode}'.");
logger.LogInformation($"Activated session '{channel.SessionId}'.");
var readRequest = new ReadRequest {
NodesToRead = new[] { new ReadValueId {
NodeId = NodeId.Parse(VariableIds.Server_ServerStatus), AttributeId = AttributeIds.Value
} }
};
var readResult = await channel.ReadAsync(readRequest);
var serverStatus = readResult.Results[0].GetValueOrDefault <ServerStatusDataType>();
logger.LogInformation("Server status:");
logger.LogInformation(" ProductName: {0}", serverStatus.BuildInfo.ProductName);
logger.LogInformation(" SoftwareVersion: {0}", serverStatus.BuildInfo.SoftwareVersion);
logger.LogInformation(" ManufacturerName: {0}", serverStatus.BuildInfo.ManufacturerName);
logger.LogInformation(" State: {0}", serverStatus.State);
logger.LogInformation(" CurrentTime: {0}", serverStatus.CurrentTime);
logger.LogInformation($"Closing session '{channel.SessionId}'.");
await channel.CloseAsync();
}
public async Task StructureTest()
{
var channel = new ClientSessionChannel(
localDescription,
certificateStore,
new AnonymousIdentity(),
EndpointUrl,
loggerFactory: loggerFactory);
await channel.OpenAsync();
var readRequest = new ReadRequest
{
NodesToRead = new[]
{
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Structure")
},
},
};
var readResponse = await channel.ReadAsync(readRequest);
foreach (var result in readResponse.Results)
{
StatusCode.IsGood(result.StatusCode)
.Should().BeTrue();
}
// reading this node returns an array of ExtensionObjects
var obj = readResponse.Results[0].Value;
// create new DataValue for writing. Most servers reject writing values with timestamps.
var newValue = new DataValue(obj);
var writeRequest = new WriteRequest
{
NodesToWrite = new[]
{
new WriteValue {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Structure"), Value = newValue
},
},
};
var writeResponse = await channel.WriteAsync(writeRequest);
foreach (var result in writeResponse.Results)
{
StatusCode.IsGood(result)
.Should().BeTrue();
}
logger.LogInformation($"Closing session '{channel.SessionId}'.");
await channel.CloseAsync();
}
public async Task StackTest()
{
var channel = new ClientSessionChannel(
localDescription,
certificateStore,
new AnonymousIdentity(),
EndpointUrl,
loggerFactory: loggerFactory);
await channel.OpenAsync();
logger.LogInformation($"Opened session with endpoint '{channel.RemoteEndpoint.EndpointUrl}'.");
logger.LogInformation($"SecurityPolicy: '{channel.RemoteEndpoint.SecurityPolicyUri}'.");
logger.LogInformation($"SecurityMode: '{channel.RemoteEndpoint.SecurityMode}'.");
logger.LogInformation($"Activated session '{channel.SessionId}'.");
var readRequest = new ReadRequest
{
NodesToRead = new[]
{
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Boolean")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.SByte")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Int16")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Int32")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Int64")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Byte")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.UInt16")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.UInt32")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.UInt64")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Float")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Double")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.String")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.DateTime")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.Guid")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.ByteString")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.XmlElement")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.LocalizedText")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Scalar.QualifiedName")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Boolean")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.SByte")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Int16")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Int32")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Int64")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Byte")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.UInt16")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.UInt32")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.UInt64")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Float")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Double")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.String")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.DateTime")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.Guid")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.ByteString")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.XmlElement")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.LocalizedText")
},
new ReadValueId {
AttributeId = AttributeIds.Value, NodeId = NodeId.Parse("ns=2;s=Demo.Static.Arrays.QualifiedName")
},
},
};
var sw = new Stopwatch();
sw.Restart();
for (int i = 0; i < 1; i++)
{
var readResponse = await channel.ReadAsync(readRequest);
foreach (var result in readResponse.Results)
{
StatusCode.IsGood(result.StatusCode)
.Should().BeTrue();
var obj = result.GetValue();
}
}
sw.Stop();
logger.LogInformation($"{sw.ElapsedMilliseconds} ms");
logger.LogInformation($"Closing session '{channel.SessionId}'.");
await channel.CloseAsync();
}
