public override void Deserialize(BinaryReader reader)
{
MediusAppPacketIds id = reader.Read <MediusAppPacketIds>();
try
{
AppMessage = BaseAppMessage.Instantiate(id, reader);
}
catch (Exception e)
{
Console.WriteLine($"Error deserializing {Id}:{id}");
throw e;
}
}
public static List <DMETypePacketFragment> FromPayload(MediusAppPacketIds id, byte[] payload, int index, int length)
{
List <DMETypePacketFragment> fragments = new List <DMETypePacketFragment>();
byte messageClass = (byte)id;
byte messageType = (byte)(((int)id) >> 8);
int i = 0;
while (i < length)
{
ushort subPacketSize = (ushort)(length - i);
if (subPacketSize > MediusConstants.DME_FRAGMENT_MAX_PAYLOAD_SIZE)
{
subPacketSize = MediusConstants.DME_FRAGMENT_MAX_PAYLOAD_SIZE;
}
var frag = new DMETypePacketFragment()
{
MessageClass = messageClass,
MessageType = messageType,
SubPacketSize = subPacketSize,
SubPacketCount = 0,
SubPacketIndex = (ushort)fragments.Count,
MultiPacketindex = 0,
PacketBufferSize = length,
PacketBufferOffset = i,
Payload = new byte[subPacketSize]
};
// Copy payload segment into fragment payload
Array.Copy(payload, i + index, frag.Payload, 0, subPacketSize);
//
fragments.Add(frag);
// Increment i
i += subPacketSize;
}
// Recorrect fragment counts
foreach (var frag in fragments)
{
frag.SubPacketCount = (ushort)fragments.Count;
}
return(fragments);
}
/// <summary>
/// Serializes the message.
/// </summary>
public void Serialize(out List <byte[]> results)
{
results = new List <byte[]>();
byte[] result = null;
var buffer = new byte[1024 * 10];
int length = 0;
// Serialize message
using (MemoryStream stream = new MemoryStream(buffer, true))
{
using (BinaryWriter writer = new BinaryWriter(stream))
{
Serialize(writer);
length = (int)writer.BaseStream.Position;
}
}
// Check for fragmentation
if (Id == RT_MSG_TYPE.RT_MSG_SERVER_APP && length > MediusConstants.MEDIUS_MESSAGE_MAXLEN)
{
MediusAppPacketIds appId = (MediusAppPacketIds)((buffer[1] << 8) | buffer[0]);
var fragments = DMETypePacketFragment.FromPayload(appId, buffer, 2, length - 2);
foreach (var frag in fragments)
{
new RT_MSG_SERVER_APP()
{
AppMessage = frag
}.Serialize(out var fragBuffers);
results.AddRange(fragBuffers);
}
}
else
{
// Add id and length to header
result = new byte[length + 3];
result[0] = (byte)this.Id;
result[1] = (byte)(length & 0xFF);
result[2] = (byte)((length >> 8) & 0xFF);
Array.Copy(buffer, 0, result, 3, length);
results.Add(result);
}
}
public static BaseAppMessage Instantiate(MediusAppPacketIds id, BinaryReader reader)
{
BaseAppMessage msg;
// Init
Initialize();
// Instantiate
if (!_messageClassById.TryGetValue(id, out var classType))
{
msg = new RawAppMessage(id);
}
else
{
msg = (BaseAppMessage)Activator.CreateInstance(classType);
}
// Deserialize
msg.Deserialize(reader);
return(msg);
}
public override void Deserialize(BinaryReader reader)
{
MediusAppPacketIds id = reader.Read <MediusAppPacketIds>();
AppMessage = BaseAppMessage.Instantiate(id, reader);
}
public static List <DMETypePacketFragment> FromPayload(MediusAppPacketIds id, byte[] payload)
{
return(FromPayload(id, payload, 0, payload.Length));
}
public MediusAppAttribute(MediusAppPacketIds id)
{
PacketId = id;
}
public RawAppMessage(MediusAppPacketIds id)
{
_id = (ushort)id;
}
