prefer to use txindex if available for GetTransaction

Fixes #22382

1 files changed, 6 insertions, 5 deletions

diff --git a/src/validation.h b/src/validation.h
index fc702b7183..0cebf3967d 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -142,15 +142,16 @@ void StartScriptCheckWorkerThreads(int threads_num);
 /** Stop all of the script checking worker threads */
 void StopScriptCheckWorkerThreads();
 /**
- * Return transaction from the block at block_index.
- * If block_index is not provided, fall back to mempool.
- * If mempool is not provided or the tx couldn't be found in mempool, fall back to g_txindex.
+ * Return transaction with a given hash.
+ * If mempool is provided and block_index is not provided, check it first for the tx.
+ * If -txindex is available, check it next for the tx.
+ * Finally, if block_index is provided, check for tx by reading entire block from disk.
  *
  * @param[in]  block_index     The block to read from disk, or nullptr
- * @param[in]  mempool         If block_index is not provided, look in the mempool, if provided
+ * @param[in]  mempool         If provided, check mempool for tx
  * @param[in]  hash            The txid
  * @param[in]  consensusParams The params
- * @param[out] hashBlock       The hash of block_index, if the tx was found via block_index
+ * @param[out] hashBlock       The block hash, if the tx was found via -txindex or block_index
  * @returns                    The tx if found, otherwise nullptr
  */
 CTransactionRef GetTransaction(const CBlockIndex* const block_index, const CTxMemPool* const mempool, const uint256& hash, const Consensus::Params& consensusParams, uint256& hashBlock);