etxn_fee_base
🚧 WarningFees on a Hooks-enabled ledger are non trivial. See: Hook Fees for details.
Concepts
Behaviour
Return the amount of the fee in drops recommended for a to-be emitted transaction.
Definition
int64_t etxn_fee_base (
uint32_t read_ptr,
uint32_t read_len
);
Example
int64_t fee_to_pay =
etxn_fee_base(tx_blob, tx_blob_len);
Parameters
read_ptr
uint32_t
Pointer to the buffer containing the serialized transaction you intend to emit. The fee field is required but ignored (you may use zero). Use the output of this function to populate the fee field correctly.
read_len
uint32_t
The length of the tx blob.
Return Code
int64_t
The smallest number of drops that an emitted txn would need to be accepted.
If negative, an error:
OUT_OF_BOUNDS
- The provided buffer is not validly within the hook memory.
PREREQUISITE_NOT_MET
- etxn_reserve
has not been called first.
INVALID_TXN
- The provided buffer did not contain a valid serialized transaction. (Deserialization failed, or a required field was missing.)
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