public INGetRequest Deserialize(byte[] Data, int DataSize)
{
INGetRequest rv = null;
// Explicitly check for test mode
bool testMode = false;
if (Data != null && Data.Length >= 4 && DataSize == 4)
{
var text = (Encoding.ASCII.GetString(Data, 0, 4) ?? "").Trim().ToUpper();
testMode = text == "TEST";
}
// Test mode always validates
if (testMode)
{
return(this);
}
// Must be at least one byte for version
if (Data == null || Data.Length <= 0 || Data.Length < DataSize || Data[0] != Version)
{
return(rv);
}
// Must be at exactly two bytes
if (DataSize != 2)
{
return(rv);
}
// Checksum for all bytes except last must match last byte
byte cs = ChecksumSeed;
for (int i = 0; i < DataSize - 1; i++)
{
cs ^= Data[i];
}
if (Data[DataSize - 1] != cs)
{
return(rv);
}
return(this);
}
public static INGetRequest Create(byte Version, byte[] Data, int DataSize)
{
var types = AppDomain.CurrentDomain.GetAssemblies().SelectMany(x => x.GetTypes())
.Where(x => typeof(INGetRequest).IsAssignableFrom(x) && !x.IsInterface && !x.IsAbstract);
foreach (Type type in types)
{
INGetRequest creator = null;
INGetRequest request = null;
try
{
creator = (INGetRequest)Activator.CreateInstance(type);
}
catch
{
// Any error means this class can't handle the protocol,
// so try the next class
}
try
{
bool testMode = false;
if (creator != null && Data != null && DataSize == 4)
{
var text = (Encoding.ASCII.GetString(Data, 0, 4) ?? "").Trim().ToUpper();
testMode = text == "TEST";
}
if (creator != null && (testMode || creator.Version == Version))
{
request = creator.Deserialize(Data, DataSize);
}
}
catch
{
// Any error means this is the correct class for the protocol,
// but we had an error handling it, so return immediately
return(null);
}
return(request);
}
// No classes can handle the protocol
return(null);
}