How to Listen for Speed Up and Cancelled Transactions on Ethereum? | by Szymon Kolber | Mar, 2022

Listening for speed-ups in Metamask be like…
  1. Velocity up,
  2. Cancel.
Velocity up & Cancel actions on Metamask

Very best situation

Blissful state illustration

Ethereum Transaction

Velocity up

Cancel

Comparability of tx variations

1. Frontend

Steered implementation
Sending a transaction on the frontend

2. Backend

A easy categorical server implementation
  1. From handle,
  2. Nonce,
  3. Transaction hashes.
addTxToWatch
Node init
Watching transactions mechanism
TxToWatch sniffer

Checking for the transaction outcome

New categorical endpoint, and checkTxHash operate

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