/// <summary>
/// Prepare data
/// </summary>
/// <param name="publisherConnection"></param>
/// <returns></returns>
private byte[] PrepareData(UdpPubSubConnection publisherConnection, UdpConnectionType udpConnectionType = UdpConnectionType.Networking, int networkMessageIndex = 0)
{
try
{
WriterGroupDataType writerGroup0 = publisherConnection.PubSubConnectionConfiguration.WriterGroups.First();
IList <UaNetworkMessage> networkMessages = null;
if (udpConnectionType == UdpConnectionType.Discovery)
{
List <UInt16> dataSetWriterIds = new List <UInt16>();
foreach (DataSetWriterDataType dataSetWriterDataType in writerGroup0.DataSetWriters)
{
dataSetWriterIds.Add(dataSetWriterDataType.DataSetWriterId);
}
networkMessages = publisherConnection.CreateDataSetMetaDataNetworkMessages(dataSetWriterIds.ToArray());
}
else
{
networkMessages = publisherConnection.CreateNetworkMessages(writerGroup0, new WriterGroupPublishState());
}
Assert.IsNotNull(networkMessages, "CreateNetworkMessages returned null");
Assert.IsTrue(networkMessages.Count > networkMessageIndex, "networkMessageIndex is outside of bounds");
UaNetworkMessage message = networkMessages[networkMessageIndex];
byte[] bytes = message.Encode(ServiceMessageContext.GlobalContext);
return(bytes);
}
catch
{
return(Array.Empty <byte>());
}
}
public void ValidateUdpPubSubConnectionNetworkMessageDiscoveryPublish()
{
//Arrange
var localhost = GetFirstNic();
Assert.IsNotNull(localhost, "localhost is null");
Assert.IsNotNull(localhost.Address, "localhost.Address is null");
//create publisher configuration object with modified port
string configurationFile = Utils.GetAbsoluteFilePath(PublisherConfigurationFileName, true, true, false);
PubSubConfigurationDataType publisherConfiguration = UaPubSubConfigurationHelper.LoadConfiguration(configurationFile);
Assert.IsNotNull(publisherConfiguration, "publisherConfiguration is null");
Assert.Greater(publisherConfiguration.Connections.Count, 1, "publisherConfiguration.Connection should be > 0");
//discovery IP adress 224.0.2.14
IPAddress[] multicastIPAddresses = Dns.GetHostAddresses(UdpDiscoveryIp);
IPAddress multicastIPAddress = multicastIPAddresses.First();
Assert.IsNotNull(multicastIPAddress, "multicastIPAddress is null");
NetworkAddressUrlDataType publisherAddress = new NetworkAddressUrlDataType();
publisherAddress.Url = string.Format(UdpUrlFormat, Utils.UriSchemeOpcUdp, multicastIPAddress.ToString());
publisherConfiguration.Connections[0].Address = new ExtensionObject(publisherAddress);
//create publisher UaPubSubApplication with changed configuration settings
UaPubSubApplication publisherApplication = UaPubSubApplication.Create(publisherConfiguration);
Assert.IsNotNull(publisherApplication, "publisherApplication is null");
UdpPubSubConnection publisherConnection = publisherApplication.PubSubConnections.First() as UdpPubSubConnection;
Assert.IsNotNull(publisherConnection, "publisherConnection is null");
// will signal that the uadp message was received from local ip
m_shutdownEvent = new ManualResetEvent(false);
//setup uadp client for receiving from multicast (simulate a subscriber multicast)
UdpClient udpMulticastClient = new UdpClientMulticast(localhost.Address, multicastIPAddress, DiscoveryPortNo);
udpMulticastClient.BeginReceive(new AsyncCallback(OnReceive), udpMulticastClient);
// prepare a network message
WriterGroupDataType writerGroup0 = publisherConnection.PubSubConnectionConfiguration.WriterGroups.First();
List <UInt16> dataSetWriterIds = new List <UInt16>();
foreach (DataSetWriterDataType dataSetWriterDataType in writerGroup0.DataSetWriters)
{
dataSetWriterIds.Add(dataSetWriterDataType.DataSetWriterId);
}
IList <UaNetworkMessage> networkMessages = publisherConnection.CreateDataSetMetaDataNetworkMessages(dataSetWriterIds.ToArray());
Assert.IsNotNull(networkMessages, "connection.CreateNetworkMessages shall not return null");
//Act
publisherConnection.Start();
if (networkMessages != null)
{
foreach (UaNetworkMessage uaNetworkMessage in networkMessages)
{
if (uaNetworkMessage != null)
{
publisherConnection.PublishNetworkMessage(uaNetworkMessage);
}
}
}
//Assert
bool noMessageReceived = false;
if (!m_shutdownEvent.WaitOne(EstimatedPublishingTime))
{
noMessageReceived = true;
}
publisherConnection.Stop();
udpMulticastClient.Close();
udpMulticastClient.Dispose();
if (noMessageReceived)
{
Assert.Fail("The UDP message was not received");
}
}
