Create Transactions

Prerequisites

• The private key to the account with both testnet KAS on Layer 1 and bridged KAS on Layer 2.

Step1

Sign an L2 transaction using your private key. Kasplex L2 supports both Legacy Transactions and EIP-1559 transactions.

	tx := types.NewTx(&types.LegacyTx{
		Nonce:    nonce,
		To:       to,
		Value:    amount,
		Gas:      gasLimit,
		GasPrice: gasPrice,
		Data:     txdata,
	})
	signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), privateKey)
	vmData := signedTx.MarshalJSON()

Step2

To ensure the Kasplex L2 engine correctly parses L1 transactions, a fixed identifier 'kasplex' and a transaction type description must be added to the transaction.

	tx.Payload = []byte("kasplex")
	if marshalJSON {               //version 0 JSON
		tx.Payload = append(tx.Payload, 0x0)
	} else { //version 1 Binary
		tx.Payload = append(tx.Payload, 0x1)
	}
	tx.Payload = append(tx.Payload, vmData...)

Kasplex currently supports four type descriptions:

Type	Description
0x00	Json
0x01	Binary
0x80	zlib compressed Json
0x81	zlib compressed Binary

Read Deploy Contract chapter to understand why zlib compression is needed for data.

Step3

Check Transaction Receipt

curl -X POST \
-H "Content-Type: application/json" \
--data '{"jsonrpc":"2.0","method":"eth_getTransactionReceipt","params":["0x255077c91162d2add8378905e62d7cabfa082061d84c10acc0a360d7b5dbf8c3"],"id":167012}' \
https://rpc.kasplextest.xyz