Configuration

gasPriceAt

caver.klay.gasPriceAt([defaultBlock] [, callback])

Returns the unit price of gas in peb that was effective at the given block height.

Parameters

Name	Type	Description
defaultBlock	Number | String	(optional) If you don't pass this parameter, the default block set by caver.klay.defaultBlock will be used.
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns String - A numeric string of the gas price in peb.

Example

> caver.klay.gasPriceAt().then(console.log);
0x5d21dba00

> caver.klay.gasPriceAt('latest').then(console.log);
0x5d21dba00

getChainId

caver.klay.getChainId([callback])

Returns the chain ID of the chain.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Number - Integer of the chain ID of the chain.

Example

> caver.klay.getChainId().then(console.log);
1001

getGasPrice

caver.klay.getGasPrice([callback])

Returns the unit price defined in the Klaytn network.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns String - Number string of the current unit price in peb.

Example

> caver.klay.getGasPrice().then(console.log);
"25000000000"

getNodeInfo

caver.klay.getNodeInfo([callback])

Returns the current client version of a Klaytn node.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns String - The current client version of a Klaytn node.

Example

> caver.klay.getNodeInfo().then(console.log);
Klaytn/v0.10.1+fc5c37064e/linux-amd64/go1.11.2

getProtocolVersion

caver.klay.getProtocolVersion([callback])

Returns the Klaytn protocol version of the node. The current version (as of v1.9.0) of Cypress/Baobab is istanbul/65.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns String - The Klaytn protocol version of the node.

Example

> caver.klay.getProtocolVersion().then(console.log);
0x40

isSenderTxHashIndexingEnabled

caver.klay.isSenderTxHashIndexingEnabled([callback])

Returns true if the node is indexing sender transaction hash to transaction hash mapping information.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback function. The callback is fired with an error object as the first parameter and the result as the second.

Return Value

Promise returns Boolean - true means the node is indexing the sender transaction hash to find the fee-payer-signed transaction. For detailed information, please see Klaytn Platform API - klay_getTransactionBySenderTxHash and Klaytn Transactions - Fee Delegation and SenderTxHash.

Example

> caver.klay.isSenderTxHashIndexingEnabled().then(console.log);
true

isParallelDBWrite

caver.klay.isParallelDBWrite([callback])

Returns true if the node is writing blockchain data in parallel manner. It is enabled by default.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns Boolean - true means the node is writing blockchain data in a parallel manner. Returns false if the node is writing the data in a serial manner.

Example

> caver.klay.isParallelDBWrite().then(console.log);
true

rewardbase

caver.klay.rewardbase([callback])

Returns the rewardbase of the current node. Rewardbase is the address of the account where the block reward goes to. Only the Klaytn Consensus Nodes (CN) have the rewardbase in their configuration. See Configuration File.

Parameters

Name	Type	Description
callback	Function	(optional) Optional callback, returns an error object as the first parameter and the result as the second.

Return Value

Promise returns String - The rewardbase of the current node.

Example

> caver.klay.rewardbase().then(console.log);
0xed9d108be2a9a7ea5f180ace80f31b66ea107283