## overview

The Transaction handlers allows the server to interact with user transactions.
It enables the server to let the user sign a transaction and also allows the server to sign and broadcast a transaction through .

## request handlers:

### "transaction.sign" - Sign Transaction

Let the user sign a transaction without broadcasting it. This is useful if you want to sign a transaction for later use.

| parameter (in req.params) | required? | note                                                                                                                                               |
| ------------------------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| `accountId`               | ✅         | The ID of the account where the transaction will be made.                                                                                          |
| `rawTransaction`          | ✅         | The raw [transaction object](../../appendix/transaction) in the currency family-specific format.                                                   |
| `options`                 | ❌         | Extra parameters that might be needed for the transaction. See [references](../../appendix/transaction#transactionsign-type) for more information. |
| `meta`                    | ❌         | Metadata for the transaction.                                                                                                                      |
|                           |           |                                                                                                                                                    |

| walletHandler used | note |
| ------------------ | ---- |
| _transaction.sign_ |      |

- **Returns**: A promise that resolves with the raw signed transaction as a Buffer.

### "transaction.signAndBroadcast" - Sign and Broadcast Transaction

Let the user sign a transaction and broadcast it to the network.

| parameter (in req.params) | required? | note                                                                                                                                               |
| ------------------------- | --------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
| `accountId`               | ✅         | The ID of the account where the transaction will be made.                                                                                          |
| `rawTransaction`          | ✅         | The raw [transaction object](../../appendix/transaction) in the currency family-specific format.                                                   |
| `options`                 | ❌         | Extra parameters that might be needed for the transaction. See [references](../../appendix/transaction#transactionsign-type) for more information. |
| `meta`                    | ❌         | Metadata for the transaction.                                                                                                                      |

| walletHandler used             | note |
| ------------------------------ | ---- |
| _transaction.signAndBroadcast_ |      |

- **Returns**: A promise that resolves with the transaction hash as a string.