Verify submitted transaction is not malformed before waiting for its …

…final outcome. (#379)

* Verify submitted transaction is not malformed before waiting for its final outcome. (#379)

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added:
 - Support for dynamic fee calculation
 
+### Fixed
+- Resolve `txnNotFound` error with `send_reliable_submission` when waiting for a submitted malformed transaction
+
 ## [1.5.0] - 2022-04-25
 ### Added
 - Support setting flags with booleans. For each transaction type supporting flags there is a `FlagInterface` to set the flags with booleans.

xrpl/asyncio/transaction/reliable_submission.py

@@ -79,8 +79,8 @@ async def send_reliable_submission(
         The response from a validated ledger.
 
     Raises:
-        XRPLReliableSubmissionException: if the transaction fails or is missing a
-            `last_ledger_sequence` param.
+        XRPLReliableSubmissionException: if the transaction fails, is malformed, or is
+            missing a `last_ledger_sequence` param.
     """
     if transaction.last_ledger_sequence is None:
         raise XRPLReliableSubmissionException(
@@ -89,6 +89,10 @@ async def send_reliable_submission(
     transaction_hash = transaction.get_hash()
     submit_response = await submit_transaction(transaction, client)
     prelim_result = submit_response.result["engine_result"]
+    if prelim_result[0:3] == "tem":
+        raise XRPLReliableSubmissionException(
+            submit_response.result["engine_result_message"]
+        )
 
     return await _wait_for_final_transaction_outcome(
         transaction_hash, client, prelim_result