Bug: Transactions stuck in PENDING state indefinitely when gas estimation fails

[Abhishekkochar]

Description

When a transaction fails gas estimation (e.g., would revert onchain), rrelayer does not mark it as FAILED. Instead, the transaction remains
in PENDING status and the pending queue worker retries indefinitely, causing an infinite retry loop.

Steps to Reproduce

1. Submit a transaction via rrelayer API that would revert onchain (e.g., to a non-existent contract address)
2. Transaction is queued with status PENDING
3. rrelayer's background worker attempts to send the transaction
4. Gas estimation fails with error: Gas calculation error
5. Transaction remains PENDING instead of being marked FAILED
6. Worker continuously retries every few seconds

Expected Behavior

• Transactions that fail gas estimation should be marked as FAILED after N retry attempts
• Failed transactions should not be retried indefinitely
• Error should be surfaced to the API caller

Actual Behavior

• Transaction stays PENDING forever
• Logs show continuous retry attempts:
  INFO Preparing to send transaction for relayer with speed FAST
  ERROR PENDING QUEUE ERROR: Send transaction error: Gas calculation error
  INFO Preparing to send transaction for relayer with speed FAST
  ERROR PENDING QUEUE ERROR: Send transaction error: Gas calculation error
• Restarting rrelayer doesn't help (transactions are persisted in PostgreSQL)
• Only workaround is to manually delete pending transactions or reset database

Logs

INFO Sending transaction Transaction { id: TransactionId(...), status: PENDING, ... }
INFO Computing gas price for transaction with speed FAST
ERROR PENDING QUEUE ERROR: Send transaction error: Gas calculation error

After N attempt, transaction should fail, and set to Failed state. This might not be a big deal, however since we are using Turnkey, this adds up to a bit. Thanks.

[joshstevens19]

hey thanks for raising this i thought i fixed this edge case what version of rrelayer are you on?

[Abhishekkochar]

hey thanks for raising this i thought i fixed this edge case what version of rrelayer are you on?

rrelayer = "0.7.0"

[Abhishekkochar]

I get the following error:
10 November - 10:17:26.914119 ERROR PENDING QUEUE ERROR: Send transaction error: Transaction send error: Provider error: server returned an error response: error code -32000: nonce too high: address 0x33F970bA6e156AC1DFEcf63e2363c11F91507f54, tx: 1 state: 0

This account nonce is 0. Signing works perfectly with turnkey, however if the underlying transactions fails, txs repeatedly submit again. Which again result the successful signing but failed underlying txs. We exhaust the signature limit when this happens.

Edit: total 7 retires attempt.

[Abhishekkochar]

rrelayer.yaml

`name: tx_broker
signing_provider:
turnkey:
organization_id: ${TURNKEY_ORGANIZATION_ID}
api_private_key: ${TURNKEY_USER_PRIVATE_API_KEY}
api_public_key: ${TURNKEY_USER_PUBLIC_API_KEY}
wallet_id: ${TURNKEY_WALLET_ID}
networks:

• name: arbitrum_sepolia
  chain_id: 421614
  provider_urls:
  • ${ARB_SEPOLIA_RPC_URL}
    block_explorer_url: https://sepolia.arbiscan.io
    enable_sending_blobs: false
    gas_bump_blocks_every:
    slow: 50
    medium: 30
    fast: 20
    super_fast: 10
    max_gas_price_multiplier: 2
    max_pending_transactions: 100
    api_config:
    port: 8000
    authentication_username: ${RRELAYER_AUTH_USERNAME}
    authentication_password: ${RRELAYER_AUTH_PASSWORD}
    rate_limit_per_second: 10`