Class EvmTransactionExtensions

Extension methods for submitting Ethereum-compatible EVM transactions.

Inheritance

object

EvmTransactionExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Hiero

Assembly: Hiero.dll

Syntax

public static class EvmTransactionExtensions

Methods

ExecuteEvmTransactionAsync(ConsensusClient, EvmTransactionParams, Action<IConsensusContext>?)

Submits an equivalent Ethereum transaction (native RLP encoded type 0, 1, and 2) transaction to the hedera network.

Declaration

public static Task<TransactionReceipt> ExecuteEvmTransactionAsync(this ConsensusClient client, EvmTransactionParams transactionParams, Action<IConsensusContext>? configure = null)

Parameters

Type	Name	Description
ConsensusClient	client	The Consensus Node Client executing the EVM transaction.
EvmTransactionParams	transactionParams	The ethereum formatted transaction details.
Action<IConsensusContext>	configure	Optional callback method providing an opportunity to modify the execution configuration for just this method call. It is executed prior to submitting the request to the network.

Returns

Type	Description
Task<TransactionReceipt>	A transaction receipt indicating success, it does not include any output parameters sent from the contract.

Examples

// Submit a native EIP-1559 / EIP-2930 / legacy Ethereum transaction
// through the HAPI Ethereum gateway. `Transaction` is the full RLP
// blob (type 0, 1, or 2), already signed. AdditionalGasAllowance
// lets the HAPI payer cover fees if the eth sender runs short.
var receipt = await client.ExecuteEvmTransactionAsync(new EvmTransactionParams
{
    Transaction = signedRlpTransaction,
    AdditionalGasAllowance = 100_000_000 // 1 HBAR backstop
});
Console.WriteLine($"EVM tx status: {receipt.Status}");

Exceptions

Type	Condition
ArgumentException	If required arguments are missing or invalid.
InvalidOperationException	If required context configuration is missing.
PrecheckException	If the gateway node refused the transaction. Only a code about the transaction itself proves it did not execute; any other code leaves the outcome unknown, so settle it by its transaction id on a mirror node rather than resubmitting it (see PrecheckException).
ConsensusException	If the outcome could not be confirmed: the transaction may have executed, so settle it by its transaction id on a mirror node rather than resubmitting it.
TransactionException	If the network rejected the request as invalid or had missing data.