fix BlockHeader object of json-rpc

- add missing baseFeePerGas field
- add missing mixHash field

nimbus/rpc/rpc_types.nim

@@ -62,10 +62,12 @@ type
     difficulty*: HexQuantityStr     # integer of the difficulty for this block.
     totalDifficulty*: HexQuantityStr# integer of the total difficulty of the chain until this block.
     extraData*: HexDataStr          # the "extra data" field of this block.
+    mixHash*: Hash256
     size*: HexQuantityStr           # integer the size of this block in bytes.
     gasLimit*: HexQuantityStr       # the maximum gas allowed in this block.
     gasUsed*: HexQuantityStr        # the total used gas by all transactions in this block.
     timestamp*: HexQuantityStr      # the unix timestamp for when the block was collated.
+    baseFeePerGas*: Option[HexQuantityStr]
     transactions*: seq[JsonNode]    # list of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter.
     uncles*: seq[Hash256]           # list of uncle hashes.
 

nimbus/rpc/rpc_utils.nim

@@ -144,6 +144,7 @@ proc populateBlockObject*(header: BlockHeader, chain: BaseChainDB, fullTx: bool,
   result.miner = header.coinbase
   result.difficulty = encodeQuantity(header.difficulty)
   result.extraData = hexDataStr(header.extraData)
+  result.mixHash = header.mixDigest
 
   # discard sizeof(seq[byte]) of extraData and use actual length
   let size = sizeof(BlockHeader) - sizeof(Blob) + header.extraData.len
@@ -152,7 +153,10 @@ proc populateBlockObject*(header: BlockHeader, chain: BaseChainDB, fullTx: bool,
   result.gasLimit  = encodeQuantity(header.gasLimit.uint64)
   result.gasUsed   = encodeQuantity(header.gasUsed.uint64)
   result.timestamp = encodeQuantity(header.timeStamp.toUnix.uint64)
-
+  result.baseFeePerGas = if header.fee.isSome:
+                           some(encodeQuantity(header.baseFee))
+                         else:
+                           none(HexQuantityStr)
   if not isUncle:
     result.totalDifficulty = encodeQuantity(chain.getScore(blockHash))
     result.uncles = chain.getUncleHashes(header)