Check transactions on Dlt Broker

This commponennt allow us open a connection to dlt network and listen all kind of events generated.

Actually DLT Broker can connect with Ethereum network.

Event kind

The DLT Broker accepts three kind of petitions to listen events of an Ethereum DLT network:

  • Watch-transfers: To get information about transfer registered in a transaction block of a specific address.
  • Watch-transactions: To get information about all events registered on Ethereum network of a specific address.
  • Watch-contracts: To get information and logs produced about all events registered on Ethereum network related with a specific contract.

The Ethereum network produces three kinds of events:

  • Tx: Event dispatched every time a watched address is related with a transaction of kind "transfer".
  • Event: Event dispatched every time a watched contract fires an event of any kind.
  • Log: Event dispatched with logs of operations.

To know more about specification and parameters, can be found the details here.

Use case

The Hancock broker service is accessible by a standard web socket interface.

First of all, we need to subscribe to DLT-Broker transactions from a specific address.

let request = { "kind": "watch-transactions", "body": ["0xd2Bb4b9C30DE543C2a247E818391F37A98E62D3F"], "status" : "pending" };

ws = new WebSocket(`ws://localhost:3009/dlt-broker/ethereum/subscribe`)

ws.sent(request)

After thar, for example, we have to perform a transaction from the selected address. To know more visit this link.

Check the mined transaction event on your WebSocket client, you can see the details about the transaction.

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