private int GetRequestLength(HelperTrieRequest request)
{
return
(Rlp.LengthOf((int)request.SubType) +
Rlp.LengthOf(request.SectionIndex) +
Rlp.LengthOf(request.Key) +
Rlp.LengthOf(request.FromLevel) +
Rlp.LengthOf(request.AuxiliaryData));
}
public static GetHelperTrieProofsMessage Deserialize(RlpStream rlpStream)
{
GetHelperTrieProofsMessage message = new GetHelperTrieProofsMessage();
rlpStream.ReadSequenceLength();
message.RequestId = rlpStream.DecodeLong();
message.Requests = rlpStream.DecodeArray(stream => {
HelperTrieRequest request = new HelperTrieRequest();
stream.ReadSequenceLength();
request.SubType = (HelperTrieType)stream.DecodeInt();
request.SectionIndex = stream.DecodeLong();
request.Key = stream.DecodeByteArray();
request.FromLevel = stream.DecodeLong();
request.AuxiliaryData = stream.DecodeInt();
return(request);
});
return(message);
}
public void GetCHTData(HelperTrieRequest request, List <byte[]> proofNodes, List <byte[]> auxData)
{
var cht = SyncServer.GetCHT();
// todo - enum?
if (request.AuxiliaryData == 1)
{
auxData.Add(cht.RootHash.Bytes);
return;
}
else if (request.AuxiliaryData == 2)
{
(Keccak hash, _) = cht.Get(request.Key);
var headerResult = SyncServer.FindHeaders(hash, 1, 0, false);
if (headerResult.Length != 1)
{
throw new SubprotocolException($"Unable to find header for block {request.Key.WithoutLeadingZeros().ToArray().ToLongFromBigEndianByteArrayWithoutLeadingZeros()} for GetHelperProofs response.");
}
auxData.Add(Rlp.Encode(headerResult[0]).Bytes);
}
proofNodes.AddRange(cht.BuildProof(request.Key, request.SectionIndex, request.FromLevel));
}
