simulateTransaction

Simulates a transaction to preview its effects.

This is essential for Soroban transactions to:

• Calculate resource requirements (CPU, memory, storage)

• Determine authorization entries needed

• Estimate resource fees

• Preview contract invocation results

The transaction should contain exactly one operation of type:

• InvokeHostFunctionOperation

• ExtendFootprintTTLOperation

• RestoreFootprintOperation

Any existing footprint in the transaction is ignored during simulation.

Example

val simulation = server.simulateTransaction(transaction)
if (simulation.error != null) {
    println("Simulation failed: ${simulation.error}")
} else {
    println("Min resource fee: ${simulation.minResourceFee}")
    println("Results: ${simulation.results}")
}

Parameters

See also

Throws