public override long Read(Stream stream)
{
long bytes = 0;
if (stream.CanRead)
{
EndianBinaryReader reader = new EndianBinaryReader(stream, Endian.Big);
long start = stream.Position;
base.Read(stream);
id = reader.ReadByte();
reserved2 = reader.ReadByte();
reason = (PCIReason)reader.ReadByte();
reserved3 = reader.ReadByte();
byte next = reader.PeekByte();
while (next == 0x30 || next == 0x40)
{
Item item = new SyntaxItem(next);
fields.Add(item);
item.Read(stream);
if (stream.Position >= stream.Length)
{
break;
}
next = reader.PeekByte();
}
if (fields.Count < 1)
{
throw new Exception("ill-formed presentation_context");
}
bytes = stream.Position - start;
}
return(bytes);
}
protected ServiceClass(string uid)
{
this.uid = uid;
this.id = 0xff;
this.reason = PCIReason.Undefined;
completeEvent = new System.Threading.AutoResetEvent(false);
message = null;
role = Role.Scu; // this is only sent in an A_ASSOCIATE_RQ pdu, so this default is OK
}
public PresentationContextItem(byte type)
: base(type)
{
this.id = 0;
this.reserved2 = 0;
this.reason = 0;
this.reserved3 = 0;
fields = new List <Item>();
}
public PresentationContextItem(byte type, byte id)
: base(type)
{
this.id = id;
this.reserved2 = 0;
this.reason = PCIReason.Undefined;
this.reserved3 = 0;
fields = new List <Item>();
}
protected ServiceClass(ServiceClass other)
{
this.association = null;
this.uid = other.uid;
foreach (string syntax in other.syntaxes)
{
this.syntaxes.Add((string)syntax.Clone());
}
completeEvent = new System.Threading.AutoResetEvent(false);
this.id = 0xff;
this.reason = PCIReason.Undefined;
this.role = other.role;
}