public static Span <byte> GetUniverseDiscoveryPacket(byte[] CID, string sourceName, byte page, byte lastPage, UInt16[] universes)
{
var rootLayer = new RootLayer
{
CID = CID,
Vector = RootLayerVector.VECTOR_ROOT_E131_EXTENDED
};
var framingLayer = new UniverseDiscoveryPacketFramingLayer
{
SourceName = sourceName
};
var universeDiscoveryLayer = new UniverseDiscoveryLayer
{
Page = page,
LastPage = lastPage,
Universes = universes
};
int totalLength = RootLayer.Length + UniverseDiscoveryPacketFramingLayer.Length + universeDiscoveryLayer.Length;
using var owner = MemoryPool <byte> .Shared.Rent(totalLength);
var bytes = owner.Memory.Span.Slice(0, totalLength);
rootLayer.Write(bytes, (UInt16)(SynchronizationPacketFramingLayer.Length + universeDiscoveryLayer.Length));
framingLayer.Write(bytes.Slice(RootLayer.Length), universeDiscoveryLayer.Length);
universeDiscoveryLayer.Write(bytes.Slice(RootLayer.Length + UniverseDiscoveryPacketFramingLayer.Length));
return(bytes);
}
public UniverseDiscoveryPacket()
{
RootLayer = new RootLayer
{
Vector = RootLayerVector.VECTOR_ROOT_E131_EXTENDED
};
FramingLayer = new UniverseDiscoveryPacketFramingLayer();
UniverseDiscoveryLayer = new UniverseDiscoveryLayer();
}
public void Given_TheDataIsCorrect_When_ParseIsCalled_Then_TheDataIsParsedAsExpected()
{
string sourceName = "This is the source name";
var bytes = GetUniverseDiscoveryPacketFramingLayer(sourceName);
var framingLayer = UniverseDiscoveryPacketFramingLayer.Parse(bytes.ToArray());
Assert.Equal(FramingLayerVector.VECTOR_E131_EXTENDED_DISCOVERY, framingLayer.Vector);
Assert.Equal(sourceName, framingLayer.SourceName);
}
public void Given_TheVectorIsIncorrect_When_ParseIsCalled_Then_NullIsReturned()
{
List <byte> bytes = new List <byte>();
bytes.AddRange(new byte[] { 0x7 << 4, UniverseDiscoveryPacketFramingLayer.Length }); // flags and length
bytes.AddRange(new byte[] { 0, 0, 0, (byte)42 }); // Vector
string sourceName = "This is the source name";
bytes.AddRange(Encoding.UTF8.GetBytes(sourceName));
bytes.AddRange(Enumerable.Repeat((byte)0, 64 - sourceName.Length));
bytes.AddRange(new byte[] { 0, 0, 0, 0 }); // reserved
Assert.Null(UniverseDiscoveryPacketFramingLayer.Parse(bytes.ToArray()));
}
public void When_WriteIsCalled_Then_TheDataIsCorrect()
{
string sourceName = "My source name";
var framingLayer = new UniverseDiscoveryPacketFramingLayer()
{
SourceName = sourceName
};
var expectedBytes = GetUniverseDiscoveryPacketFramingLayer(sourceName);
using var owner = MemoryPool <byte> .Shared.Rent(UniverseDiscoveryPacketFramingLayer.Length);
var actualBytes = owner.Memory.Span.Slice(0, UniverseDiscoveryPacketFramingLayer.Length);
framingLayer.Write(actualBytes, 0);
Assert.Equal(expectedBytes.ToArray(), actualBytes.ToArray());
}
public void Given_ThePacketIsAValidUniverseDiscoveryPacket_When_ParseIsCalled_Then_ThePacketIsParsedCorrectly()
{
byte[] CID = Enumerable.Range(1, 12).Select(x => (byte)x).ToArray();
var rootLayer = new RootLayer
{
CID = CID,
Vector = RootLayerVector.VECTOR_ROOT_E131_EXTENDED
};
string sourceName = "Source name";
var framingLayer = new UniverseDiscoveryPacketFramingLayer
{
SourceName = sourceName
};
UInt16[] universes = Enumerable.Range(200, 1000)
.Select(x => (UInt16)x)
.ToArray();
var discoveryLayer = new UniverseDiscoveryLayer
{
Universes = universes,
Page = 25,
LastPage = 25
};
int totalLength = discoveryLayer.Length + UniverseDiscoveryPacketFramingLayer.Length + RootLayer.Length;
using var owner = MemoryPool <byte> .Shared.Rent(totalLength);
var bytes = owner.Memory.Span.Slice(0, totalLength);
rootLayer.Write(bytes, (UInt16)(UniverseDiscoveryPacketFramingLayer.Length + discoveryLayer.Length));
framingLayer.Write(bytes.Slice(RootLayer.Length), discoveryLayer.Length);
discoveryLayer.Write(bytes.Slice(RootLayer.Length + UniverseDiscoveryPacketFramingLayer.Length));
var packet = SacnPacket.Parse(bytes);
Assert.NotNull(packet);
Assert.IsType <UniverseDiscoveryPacket>(packet);
}
public static UniverseDiscoveryPacket Parse(ReadOnlySpan <byte> bytes, RootLayer rootLayer, UniverseDiscoveryPacketFramingLayer framingLayer)
{
UniverseDiscoveryPacket dataPacket = new UniverseDiscoveryPacket
{
RootLayer = rootLayer,
FramingLayer = framingLayer,
UniverseDiscoveryLayer = UniverseDiscoveryLayer.Parse(bytes)
};
return(dataPacket);
}
