package main import ( "flag" "fmt" "math/big" "strings" "github.com/ava-labs/avalanchego/ids" "github.com/ava-labs/coreth" "github.com/ava-labs/coreth/core/types" "github.com/ava-labs/coreth/core/vm" "github.com/ethereum/go-ethereum/accounts/abi" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/rlp" ) func checkError(err error) { if err != nil { panic(err) } } var mcAbiJSON = `[{"inputs":[],"name":"enableMultiCoin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"coinid","type":"uint256"}],"name":"getBalance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address payable","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"uint256","name":"coinid","type":"uint256"},{"internalType":"uint256","name":"amount2","type":"uint256"}],"name":"transfer","outputs":[],"stateMutability":"nonpayable","type":"function"}]` func main() { var fChainID int64 var fKey string var fNonce uint64 var fGasPrice int64 var fGasLimit uint64 var fTo string var fAmount int64 var fAssetID string flag.Int64Var(&fChainID, "chainid", 43112, "tx.chainId") flag.Uint64Var(&fNonce, "nonce", 0, "tx.nonce") flag.Int64Var(&fGasPrice, "gasprice", 470000000000, "tx.gasPrice") flag.Uint64Var(&fGasLimit, "gaslimit", 21000, "tx.gasLimit") flag.Int64Var(&fAmount, "amount", 100, "tx.amount") flag.StringVar(&fKey, "key", "0x56289e99c94b6912bfc12adc093c9b51124f0dc54ac7a766b2bc5ccf558d8027", "private key (hex with \"0x\")") flag.StringVar(&fTo, "to", "0x1f0e5C64AFdf53175f78846f7125776E76FA8F34", "tx.to (hex with \"0x\")") flag.StringVar(&fAssetID, "assetid", "va6gCYWu3boo3NKQgzdwfzB73dmTYKZn2EZ7nz5pbDBXAsaj4", "assetID") flag.Parse() _pkey, err := crypto.HexToECDSA(fKey[2:]) checkError(err) pkey := coreth.NewKeyFromECDSA(_pkey) // info required to generate a transaction chainID := big.NewInt(fChainID) nonce := fNonce gasPrice := big.NewInt(fGasPrice) gasLimit := fGasLimit to := common.HexToAddress(fTo) assetID, err := ids.FromString(fAssetID) checkError(err) mcAbi, err := abi.JSON(strings.NewReader(mcAbiJSON)) data, err := mcAbi.Pack("transfer", to, big.NewInt(0), common.Hash(assetID).Big(), big.NewInt(fAmount)) checkError(err) tx := types.NewTransaction(nonce, vm.BuiltinAddr, big.NewInt(0), uint64(gasLimit), gasPrice, data) signedTx, err := types.SignTx(tx, types.NewEIP155Signer(chainID), pkey.PrivateKey) checkError(err) txJSON, err := signedTx.MarshalJSON() checkError(err) fmt.Printf("json: %s\n", string(txJSON)) b, err := rlp.EncodeToBytes(signedTx) fmt.Printf("hex: %s\n", hexutil.Encode(b)) }