Trivial changes for dynamic base fee

packages/caver-klay/caver-klay-accounts/src/index.js

@@ -292,7 +292,7 @@ const Accounts = function Accounts(...args) {
     delete this.BatchRequest
     delete this.extend
 
-    const _klaytnCall = [rpc.getChainId, rpc.getGasPrice, rpc.getTransactionCount]
+    const _klaytnCall = [rpc.getChainId, rpc.getGasPrice, rpc.getTransactionCount, rpc.getHeader]
     // attach methods to this._klaytnCall
     this._klaytnCall = {}
     _.each(_klaytnCall, function(method) {
@@ -393,6 +393,27 @@ Accounts.prototype._getRoleKey = function _getRoleKey(tx, account) {
     return key
 }
 
+/**
+ * _getSuggestedGasPrice returns suggested gas price.
+ * This function will be used to set gasPrice field if that is omitted.
+ * Before common architecture does not support newly added transaction types.
+ *
+ * @method _getSuggestedGasPrice
+ * @return {string}
+ */
+Accounts.prototype._getSuggestedGasPrice = async function _getSuggestedGasPrice() {
+    const header = await this._klaytnCall.getHeader('latest')
+    const bf = utils.hexToNumber(header.baseFeePerGas || '0x0')
+
+    // In before common architecture, ethereum typed transactions are not supported.
+    // So just depends on baseFeePerGas field in the header,
+    // return `baseFee * 2` or `gasPrice`.
+    if (bf > 0) return bf * 2
+
+    const gasPrice = await this._klaytnCall.getGasPrice()
+    return gasPrice
+}
+
 /**
  * create function creates random account with entropy.
  *
@@ -888,7 +909,7 @@ Accounts.prototype.signTransaction = function signTransaction() {
     // Otherwise, get the missing info from the Klaytn Node
     return Promise.all([
         isNot(tx.chainId) ? _this._klaytnCall.getChainId() : tx.chainId,
-        isNot(tx.gasPrice) ? _this._klaytnCall.getGasPrice() : tx.gasPrice,
+        isNot(tx.gasPrice) ? _this._getSuggestedGasPrice() : tx.gasPrice,
         isNot(tx.nonce) ? _this._klaytnCall.getTransactionCount(tx.from, 'pending') : tx.nonce,
     ]).then(function(args) {
         if (isNot(args[0]) || isNot(args[1]) || isNot(args[2])) {

packages/caver-rpc/src/net.js

@@ -107,6 +107,24 @@ const Net = function Net(...args) {
             call: 'net_peerCountByType',
             params: 0,
         }),
+        /**
+         * Returns the current klaytn protocol version.
+         *
+         * @memberof Net
+         * @method getVersion
+         * @instance
+         *
+         * @example
+         * const result = await caver.rpc.net.getVersion()
+         *
+         * @param {function} [callback] Optional callback, returns an error object as the first parameter and the result as the second.
+         * @return {Promise<string>} The klaytn protocol version.
+         */
+        new Method({
+            name: 'getVersion',
+            call: 'net_version',
+            params: 0,
+        }),
     ]
 
     netMethods.forEach(function(method) {

test/packages/caver.transaction/ethereumDynamicFee.js

@@ -899,7 +899,7 @@ describe('TxTypeEthereumDynamicFee', () => {
     })
 
     context('ethereumDynamicFee.fillTransaction', () => {
-        it('CAVERJS-UNIT-TRANSACTION-547: fillTransaction should call klay_getMaxPriorityFeePerGas to fill maxPriorityFeePerGas when maxPriorityFeePerGas is undefined', async () => {
+        it('CAVERJS-UNIT-TRANSACTION-547: fillTransaction should call klay_maxPriorityFeePerGas to fill maxPriorityFeePerGas when maxPriorityFeePerGas is undefined', async () => {
             transactionObj.nonce = '0x3a'
             delete transactionObj.maxPriorityFeePerGas
             const tx = caver.transaction.ethereumDynamicFee.create(transactionObj)

types/packages/caver-core/src/index.d.ts

@@ -134,6 +134,7 @@ export interface TransactionReceipt {
     blockNumber: string
     codeFormat?: string
     chainId?: string
+    effectiveGasPrice?: string
     feePayer?: string
     feePayerSignatures?: SignatureForRPC[]
     feeRatio?: string