fix receipts serializer

src/Nethermind/Nethermind.Network/P2P/Subprotocols/Eth/V63/Messages/ReceiptsMessageSerializer.cs

@@ -1,16 +1,16 @@
-//  Copyright (c) 2021 Demerzel Solutions Limited
+//  Copyright (c) 2021 Demerzel Solutions Limited
 //  This file is part of the Nethermind library.
-// 
+//
 //  The Nethermind library is free software: you can redistribute it and/or modify
 //  it under the terms of the GNU Lesser General Public License as published by
 //  the Free Software Foundation, either version 3 of the License, or
 //  (at your option) any later version.
-// 
+//
 //  The Nethermind library is distributed in the hope that it will be useful,
 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 //  GNU Lesser General Public License for more details.
-// 
+//
 //  You should have received a copy of the GNU Lesser General Public License
 //  along with the Nethermind. If not, see <http://www.gnu.org/licenses/>.
 
@@ -36,17 +36,36 @@ public ReceiptsMessageSerializer(ISpecProvider specProvider)
 
         public void Serialize(IByteBuffer byteBuffer, ReceiptsMessage message)
         {
-            Rlp rlp = Rlp.Encode(message.TxReceipts.Select(
-                b => b == null
-                    ? Rlp.OfEmptySequence
-                    : Rlp.Encode(
-                        b.Select(
-                            n => n == null
-                                ? Rlp.OfEmptySequence
-                                : _decoder.Encode(n, _specProvider.GetSpec(n.BlockNumber).IsEip658Enabled ? RlpBehaviors.Eip658Receipts : RlpBehaviors.None)).ToArray())).ToArray());
+            int totalLength = GetLength(message, out int contentLength);
 
-            RlpStream rlpStream = new NettyRlpStream(byteBuffer);
-            rlpStream.Encode(rlp);
+            byteBuffer.EnsureWritable(totalLength, true);
+            NettyRlpStream stream = new(byteBuffer);
+            stream.StartSequence(contentLength);
+
+            foreach (TxReceipt?[]? txReceipts in message.TxReceipts)
+            {
+                if (txReceipts is null)
+                {
+                    stream.Encode(Rlp.OfEmptySequence);
+                    continue;
+                }
+
+                foreach (TxReceipt? txReceipt in txReceipts)
+                {
+                    if (txReceipt is null)
+                    {
+                        stream.Encode(Rlp.OfEmptySequence);
+                        continue;
+                    }
+
+                    _decoder.Encode(stream, txReceipt,
+                        _specProvider.GetSpec(txReceipt.BlockNumber).IsEip658Enabled
+                            ? RlpBehaviors.Eip658Receipts
+                            : RlpBehaviors.None);
+                }
+
+
+            }
         }
 
         public ReceiptsMessage Deserialize(IByteBuffer byteBuffer)