internal/ethapi: Set basefee for AccessList based on given block, not chain tip (ethereum#30538)

Author: jwasinger

internal/ethapi/api.go

@@ -1287,9 +1287,18 @@ func AccessList(ctx context.Context, b Backend, blockNrOrHash rpc.BlockNumberOrH
 	}
 
 	// Ensure any missing fields are filled, extract the recipient and input data
-	if err := args.setDefaults(ctx, b, true); err != nil {
+	if err = args.setFeeDefaults(ctx, b, header); err != nil {
 		return nil, 0, nil, err
 	}
+	if args.Nonce == nil {
+		nonce := hexutil.Uint64(db.GetNonce(args.from()))
+		args.Nonce = &nonce
+	}
+	blockCtx := core.NewEVMBlockContext(header, NewChainContext(ctx, b), nil)
+	if err = args.CallDefaults(b.RPCGasCap(), blockCtx.BaseFee, b.ChainConfig().ChainID); err != nil {
+		return nil, 0, nil, err
+	}
+
 	var to common.Address
 	if args.To != nil {
 		to = *args.To

internal/ethapi/transaction_args.go

@@ -100,7 +100,7 @@ func (args *TransactionArgs) setDefaults(ctx context.Context, b Backend, skipGas
 	if err := args.setBlobTxSidecar(ctx); err != nil {
 		return err
 	}
-	if err := args.setFeeDefaults(ctx, b); err != nil {
+	if err := args.setFeeDefaults(ctx, b, b.CurrentHeader()); err != nil {
 		return err
 	}
 
@@ -183,8 +183,7 @@ func (args *TransactionArgs) setDefaults(ctx context.Context, b Backend, skipGas
 }
 
 // setFeeDefaults fills in default fee values for unspecified tx fields.
-func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend) error {
-	head := b.CurrentHeader()
+func (args *TransactionArgs) setFeeDefaults(ctx context.Context, b Backend, head *types.Header) error {
 	// Sanity check the EIP-4844 fee parameters.
 	if args.BlobFeeCap != nil && args.BlobFeeCap.ToInt().Sign() == 0 {
 		return errors.New("maxFeePerBlobGas, if specified, must be non-zero")

internal/ethapi/transaction_args_test.go

@@ -238,7 +238,7 @@ func TestSetFeeDefaults(t *testing.T) {
 			t.Fatalf("failed to set fork: %v", err)
 		}
 		got := test.in
-		err := got.setFeeDefaults(ctx, b)
+		err := got.setFeeDefaults(ctx, b, b.CurrentHeader())
 		if err != nil {
 			if test.err == nil {
 				t.Fatalf("test %d (%s): unexpected error: %s", i, test.name, err)