// Decode
public static PinkPillPayload FromEncoded(Span <byte> encodedBytes)
{
var walker = new PinkPillWalker(encodedBytes);
byte version;
try
{
walker.SkipUntil(Header[0x0]); // 别倒垃圾
var header = walker.ReadBlock(Header.Length);
if (!header.SequenceEqual(Header))
{
throw new PPPDecodeException("Invalid header.");
}
version = walker.Read();
}
catch (EndOfBytesException)
{
throw new PPPDecodeException("Invalid header");
}
var instance = new PinkPillPayload();
switch (version)
{
case 0x1:
DecodeVersion1(ref instance, walker);
break;
default:
throw new PPPDecodeException("Invalid version");
}
return(instance);
}
static void DecodeVersion1(ref PinkPillPayload payload, PinkPillWalker walker)
{
payload.EncryptMethod = walker.Read();
payload.Data = walker.ReadToEnd().ToArray();
}