accounts/abi/bind: fix bounded contracts and sim backend for 1559 (#23038)

* accounts/abi/bind: fix bounded contracts and sim backend for 1559

* accounts/abi/bind, ethclient: don't rely on chain config for gas prices

* all: enable London for all internal tests

* les: get receipt type info in les tests

* les: fix weird test

Co-authored-by: Martin Holst Swende <martin@swende.se>

accounts/abi/bind/base.go

@@ -49,9 +49,11 @@ type TransactOpts struct {
 	Nonce  *big.Int       // Nonce to use for the transaction execution (nil = use pending state)
 	Signer SignerFn       // Method to use for signing the transaction (mandatory)
 
-	Value    *big.Int // Funds to transfer along the transaction (nil = 0 = no funds)
-	GasPrice *big.Int // Gas price to use for the transaction execution (nil = gas price oracle)
-	GasLimit uint64   // Gas limit to set for the transaction execution (0 = estimate)
+	Value     *big.Int // Funds to transfer along the transaction (nil = 0 = no funds)
+	GasPrice  *big.Int // Gas price to use for the transaction execution (nil = gas price oracle)
+	GasFeeCap *big.Int // Gas fee cap to use for the 1559 transaction execution (nil = gas price oracle)
+	GasTipCap *big.Int // Gas priority fee cap to use for the 1559 transaction execution (nil = gas price oracle)
+	GasLimit  uint64   // Gas limit to set for the transaction execution (0 = estimate)
 
 	Context context.Context // Network context to support cancellation and timeouts (nil = no timeout)
 
@@ -223,12 +225,45 @@ func (c *BoundContract) transact(opts *TransactOpts, contract *common.Address, i
 	} else {
 		nonce = opts.Nonce.Uint64()
 	}
-	// Figure out the gas allowance and gas price values
-	gasPrice := opts.GasPrice
-	if gasPrice == nil {
-		gasPrice, err = c.transactor.SuggestGasPrice(ensureContext(opts.Context))
-		if err != nil {
-			return nil, fmt.Errorf("failed to suggest gas price: %v", err)
+	// Figure out reasonable gas price values
+	if opts.GasPrice != nil && (opts.GasFeeCap != nil || opts.GasTipCap != nil) {
+		return nil, errors.New("both gasPrice and (maxFeePerGas or maxPriorityFeePerGas) specified")
+	}
+	head, err := c.transactor.HeaderByNumber(opts.Context, nil)
+	if err != nil {
+		return nil, err
+	}
+	if head.BaseFee != nil && opts.GasPrice == nil {
+		if opts.GasTipCap == nil {
+			tip, err := c.transactor.SuggestGasTipCap(opts.Context)
+			if err != nil {
+				return nil, err
+			}
+			opts.GasTipCap = tip
+		}
+		if opts.GasFeeCap == nil {
+			gasFeeCap := new(big.Int).Add(
+				opts.GasTipCap,
+				new(big.Int).Mul(head.BaseFee, big.NewInt(2)),
+			)
+			opts.GasFeeCap = gasFeeCap
+		}
+		if opts.GasFeeCap.Cmp(opts.GasTipCap) < 0 {
+			return nil, fmt.Errorf("maxFeePerGas (%v) < maxPriorityFeePerGas (%v)", opts.GasFeeCap, opts.GasTipCap)
+		}
+	} else {
+		if opts.GasFeeCap != nil || opts.GasTipCap != nil {
+			return nil, errors.New("maxFeePerGas or maxPriorityFeePerGas specified but london is not active yet")
+		}
+		if opts.GasPrice == nil {
+			price, err := c.transactor.SuggestGasTipCap(opts.Context)
+			if err != nil {
+				return nil, err
+			}
+			if head.BaseFee != nil {
+				price.Add(price, head.BaseFee)
+			}
+			opts.GasPrice = price
 		}
 	}
 	gasLimit := opts.GasLimit
@@ -242,7 +277,7 @@ func (c *BoundContract) transact(opts *TransactOpts, contract *common.Address, i
 			}
 		}
 		// If the contract surely has code (or code is not needed), estimate the transaction
-		msg := ethereum.CallMsg{From: opts.From, To: contract, GasPrice: gasPrice, Value: value, Data: input}
+		msg := ethereum.CallMsg{From: opts.From, To: contract, GasPrice: opts.GasPrice, GasTipCap: opts.GasTipCap, GasFeeCap: opts.GasFeeCap, Value: value, Data: input}
 		gasLimit, err = c.transactor.EstimateGas(ensureContext(opts.Context), msg)
 		if err != nil {
 			return nil, fmt.Errorf("failed to estimate gas needed: %v", err)
@@ -250,10 +285,31 @@ func (c *BoundContract) transact(opts *TransactOpts, contract *common.Address, i
 	}
 	// Create the transaction, sign it and schedule it for execution
 	var rawTx *types.Transaction
-	if contract == nil {
-		rawTx = types.NewContractCreation(nonce, value, gasLimit, gasPrice, input)
+	if opts.GasFeeCap == nil {
+		baseTx := &types.LegacyTx{
+			Nonce:    nonce,
+			GasPrice: opts.GasPrice,
+			Gas:      gasLimit,
+			Value:    value,
+			Data:     input,
+		}
+		if contract != nil {
+			baseTx.To = &c.address
+		}
+		rawTx = types.NewTx(baseTx)
 	} else {
-		rawTx = types.NewTransaction(nonce, c.address, value, gasLimit, gasPrice, input)
+		baseTx := &types.DynamicFeeTx{
+			Nonce:     nonce,
+			GasFeeCap: opts.GasFeeCap,
+			GasTipCap: opts.GasTipCap,
+			Gas:       gasLimit,
+			Value:     value,
+			Data:      input,
+		}
+		if contract != nil {
+			baseTx.To = &c.address
+		}
+		rawTx = types.NewTx(baseTx)
 	}
 	if opts.Signer == nil {
 		return nil, errors.New("no signer to authorize the transaction with")