T GetAtt <T>(AttributeType type, Int32 position = 0)
{
StunAttribute att = GetAtt(type, false);
if (att == null)
{
return(default(T));
}
Object v = null;
switch (type)
{
case AttributeType.ChangeRequest:
Int32 d = att.Int;
if (position == 0)
{
v = (d & 4) != 0;
}
else
{
v = (d & 2) != 0;
}
return((T)v);
case AttributeType.ErrorCode:
var data = att.Data;
Type t = typeof(T);
if (t == typeof(Int32))
{
v = (data[2] & 0x7) * 100 + (data[3] & 0xFF);
}
else if (t == typeof(String))
{
v = Encoding.UTF8.GetString(data, 4, data.Length - 4);
}
return((T)v);
default:
return(att.GetValue <T>());
}
}
StunAttribute GetAtt(AttributeType type, Boolean create = false)
{
if (Atts.TryGetValue(type, out var att))
{
return(att);
}
if (!create)
{
return(null);
}
lock (Atts)
{
att = new StunAttribute();
att.Type = type;
Atts.Add(type, att);
return(att);
}
}
