Here’s a step-by-step guide and sample code that should help you fix the “transaction type not supported” error when extracting blocks in BaseChain with Go-Ethereum (Geth):
Problem Description
The problem arises because the BlockByNumber method returns an empty or incorrect response, which can be misleading. The transactionType' field is missing in the returned block data.
Solution
To fix this problem, you need to check the actual block data and determine the type of transaction that was processed by BaseChain. You can do this using Geth's internal logs or the Ethereum-Go-RPC API.
Step 1: Verify Block Data
You need to extract a specific block from BaseChain usingBlockByNumberwith the correct hash and transaction number. Then check the returned block data to determine the type of transaction processed by BaseChain.
Here's an example of a code snippet that demonstrates how to do this:
go
package main
import (
"context"
"fmt"
"github.com/ethereum/go-ethers/v5"
)
func main() {
// Replace with the correct transaction hash and number for your block
blockNumber := 12345 // Replace with actual block number
txHash := "0x...Transaction Hash..."
contractAddress := "0x...Contract Address..."
contractInterface := contractAddress
ethers := &go.Ethers{}
// Extract the block using BlockByNumber
block, err := ethers.BlockByNumber(context.Background(), contractInterface, txHash, 12345)
if err != nil {
fmt.Println(err)
return
}
// Check the returned block data to determine the transaction type
for _, t := range block.Data {
if t.Type == go.ETH_TYPE Transaction {
fmt.Printf("Transaction Type: %s\n", t.Value)
}
}
}
TransactionType
Step 2: Determine the correct transaction typeFrom the check in step 1, you should be able to determine what type of transaction was processed by BaseChain. You can use the
enumeration values from Go-Ethereum (Geth) to ensure that the correct type is returned.For example:
gotype goETHTransactionType uint8
const (
ETH_TYPE TransactionType = iota // 0x...Transaction Type...
)
func (t go.ETHTransactionType) String() string {
switch t {
case ETH_TYPE:
return "Transaction"
default:
return "Unknown"
}
}
Step 3: Update Code
Replace BlockByNumbermethod calls with the correct transaction hash and number and update the validation logic to determine the correct transaction type.
Here's an updated example code snippet that demonstrates how to do it:
go
package main
import (
"context"
"fmt"
"github.com/ethereum/go-ethers/v5"
)
func main() {
// Replace with the correct transaction hash and number for your block
blockNumber := 12345 // Replace with actual block number
txHash := "0x...Transaction Hash..."
contractAddress := "0x...Contract Address..."
ethers := &go.Ethers{}
// Extract the block using BlockByNumber with the correct transaction hash and number
block, err := ethers.BlockByNumber(context.Background(), contractAddress, txHash, blockNumber)
if err != nil {
fmt.Println(err)
return
}
// Check the returned block data to determine the type transactions
for _, t := range block.Data {
if t.Type == go.ETH_TYPE Transaction {
fmt.Printf("Transaction Type: %s\n", t.Value.String())
}
}
}
“
By following these steps, you will be able to resolve the “transaction type not supported” error when extracting blocks in BaseChain using Go-Ethereum (Geth).
