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feat: validate callBundle params #24

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feat: validate callBundle params #24

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24 changes: 24 additions & 0 deletions flashbotsrpc.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,8 @@ import (
"math/big"
"net/http"
"os"
"strconv"
"strings"
"sync"
"time"

Expand Down Expand Up @@ -617,8 +619,30 @@ func (rpc *FlashbotsRPC) FlashbotsGetUserStats(privKey *ecdsa.PrivateKey, blockN
return res, err
}

// FlashbotsCallBundle simulate a bundle against a specific block number
// https://docs.flashbots.net/flashbots-auction/searchers/advanced/rpc-endpoint#eth_callbundle
func (rpc *FlashbotsRPC) FlashbotsCallBundle(privKey *ecdsa.PrivateKey, param FlashbotsCallBundleParam) (res FlashbotsCallBundleResponse, err error) {
// validate the input
if len(param.Txs) == 0 {
return FlashbotsCallBundleResponse{}, fmt.Errorf("txs are empty")
}

if param.BlockNumber == "" {
return FlashbotsCallBundleResponse{}, fmt.Errorf("blockNumber is empty")
}

blockNumber, err := strconv.ParseInt(strings.ReplaceAll(param.BlockNumber, "0x", ""), 16, 64)
if err != nil {
return FlashbotsCallBundleResponse{}, fmt.Errorf("blockNumber is invalid")
}
if blockNumber <= 0 {
return FlashbotsCallBundleResponse{}, fmt.Errorf("blockNumber is smaller than zero")
}

if param.StateBlockNumber == "" {
return FlashbotsCallBundleResponse{}, fmt.Errorf("stateBlockNumber is empty")
}

rawMsg, err := rpc.CallWithFlashbotsSignature("eth_callBundle", privKey, param)
if err != nil {
return res, err
Expand Down