consensus: make Header base_fee_per_gas u64

crates/consensus/src/header.rs

@@ -89,7 +89,7 @@ pub struct Header {
             skip_serializing_if = "Option::is_none"
         )
     )]
-    pub base_fee_per_gas: Option<u128>,
+    pub base_fee_per_gas: Option<u64>,
     /// The total amount of blob gas consumed by the transactions within the block, added in
     /// EIP-4844.
     #[cfg_attr(
@@ -235,7 +235,7 @@ impl Header {
         Some(calc_next_block_base_fee(
             self.gas_used,
             self.gas_limit,
-            self.base_fee_per_gas? as u64,
+            self.base_fee_per_gas?,
             base_fee_params,
         ))
     }
@@ -511,7 +511,7 @@ impl Decodable for Header {
             if buf.first().map(|b| *b == EMPTY_LIST_CODE).unwrap_or_default() {
                 buf.advance(1)
             } else {
-                this.base_fee_per_gas = Some(U256::decode(buf)?.to::<u128>());
+                this.base_fee_per_gas = Some(U256::decode(buf)?.to::<u64>());
             }
         }
 
@@ -695,7 +695,7 @@ pub trait BlockHeader {
     fn nonce(&self) -> B64;
 
     /// Retrieves the base fee per gas of the block, if available
-    fn base_fee_per_gas(&self) -> Option<u128>;
+    fn base_fee_per_gas(&self) -> Option<u64>;
 
     /// Retrieves the blob gas used by the block, if available
     fn blob_gas_used(&self) -> Option<u128>;
@@ -774,7 +774,7 @@ impl BlockHeader for Header {
         self.nonce
     }
 
-    fn base_fee_per_gas(&self) -> Option<u128> {
+    fn base_fee_per_gas(&self) -> Option<u64> {
         self.base_fee_per_gas
     }
 

crates/network-primitives/src/traits.rs

@@ -144,7 +144,7 @@ pub trait HeaderResponse {
     fn extra_data(&self) -> &Bytes;
 
     /// Base fee per unit of gas (If EIP-1559 is supported)
-    fn base_fee_per_gas(&self) -> Option<u128>;
+    fn base_fee_per_gas(&self) -> Option<u64>;
 
     /// Blob fee for the next block (if EIP-4844 is supported)
     fn next_block_blob_fee(&self) -> Option<u128>;
@@ -380,7 +380,7 @@ impl<T: HeaderResponse> HeaderResponse for WithOtherFields<T> {
         self.inner.extra_data()
     }
 
-    fn base_fee_per_gas(&self) -> Option<u128> {
+    fn base_fee_per_gas(&self) -> Option<u64> {
         self.inner.base_fee_per_gas()
     }
 

crates/provider/src/ext/anvil.rs

@@ -611,7 +611,7 @@ mod tests {
         let block =
             provider.get_block_by_number(BlockNumberOrTag::Latest, false).await.unwrap().unwrap();
 
-        assert_eq!(block.header.base_fee_per_gas, Some(basefee.to::<u128>()));
+        assert_eq!(block.header.base_fee_per_gas, Some(basefee.to::<u64>()));
     }
 
     #[tokio::test]

crates/provider/src/provider/trait.rs

@@ -167,7 +167,7 @@ pub trait Provider<T: Transport + Clone = BoxTransport, N: Network = Ethereum>:
         self.client().request("eth_simulateV1", payload).into()
     }
 
-    /// Gets the chain ID.  
+    /// Gets the chain ID.
     fn get_chain_id(&self) -> ProviderCall<T, NoParams, U64, u64> {
         self.client()
             .request_noparams("eth_chainId")
@@ -230,6 +230,7 @@ pub trait Provider<T: Transport + Clone = BoxTransport, N: Network = Ethereum>:
                     .header()
                     .base_fee_per_gas()
                     .ok_or(RpcError::UnsupportedFeature("eip1559"))?
+                    .into()
             }
         };
 

crates/rpc-types-eth/src/block.rs

@@ -117,7 +117,7 @@ pub struct Header {
             with = "alloy_serde::quantity::opt"
         )
     )]
-    pub base_fee_per_gas: Option<u128>,
+    pub base_fee_per_gas: Option<u64>,
     /// Withdrawals root hash added by EIP-4895 and is ignored in legacy headers.
     #[cfg_attr(feature = "serde", serde(default, skip_serializing_if = "Option::is_none"))]
     pub withdrawals_root: Option<B256>,
@@ -247,7 +247,7 @@ impl HeaderResponse for Header {
         &self.extra_data
     }
 
-    fn base_fee_per_gas(&self) -> Option<u128> {
+    fn base_fee_per_gas(&self) -> Option<u64> {
         self.base_fee_per_gas
     }