//------------------------------------------------------------------------------------------------------------------------
#endregion
#region Constructor
//------------------------------------------------------------------------------------------------------------------------
public LANDiscoverer(IDiscoveryMessageBase DiscoveryMessage, int DiscoveryMessageMaxSize = 1024, int BroadcastPort = DefaultBroadcastPort, int?ID = null)
{
DebugEx.Assert(DiscoveryMessage != null, "DiscoveryMessage cannot be null");
if (DiscoveryMessage == null)
{
throw new NullReferenceException("DiscoveryMessage cannot be null");
}
//keep info
this.BroadcastPort = BroadcastPort;
this.DiscoveryMessageMaxSize = DiscoveryMessageMaxSize;
//set id
if (ID.HasValue)
{
myID = ID.Value;
}
//generate id
while (myID == 0)
#if NETFX
{ myID = MathTools.GetRandomNumber(0, 10000); }
#elif UNIVERSAL
{ myID = MathTools.GetRandomNumber(20000, 100000); }
#endif
//update discovery message
UpdateDiscoveryMessage(DiscoveryMessage);
//hook event for shutdown
Channel.OnSystemShutDownRequest.Add(Yodiwo.WeakAction <object> .Create(Deinitialize));
}
//------------------------------------------------------------------------------------------------------------------------
public void UpdateDiscoveryMessage(IDiscoveryMessageBase _discoveryMessage)
{
try
{
DebugEx.Assert(_discoveryMessage != null, "DiscoveryMessage cannot be null");
if (_discoveryMessage == null)
{
throw new NullReferenceException("DiscoveryMessage cannot be null");
}
//setup id on message
_discoveryMessage.Id = myID;
//get size and type
var _discoveryMessageType = _discoveryMessage.GetType();
//create payload
var data = Tools.Marshalling.ToBytes(_discoveryMessage);
if (data == null)
{
DebugEx.Assert("Could not get bytes from DicoveryMessage");
}
else
{
var dataLen = data.Length;
Array.Resize <byte>(ref data, data.Length + 2);
for (int n = data.Length - 2; n >= 2; n--)
{
data[n] = data[n - 2];
}
data[0] = (byte)(dataLen & 0x000000FF);
data[1] = (byte)((dataLen & 0x0000FF00) >> 8);
}
//update
this.DiscoveryMessage = _discoveryMessage;
this.DiscoveryMessageType = _discoveryMessageType;
this.DiscoveryMessageData = data;
}
catch (Exception ex) { DebugEx.Assert(ex); }
}
