# QBFT Transaction Resolution - Complete Solution

**Date**: $(date)  
**Status**: ✅ **TXPOOL AND ADMIN ENABLED - STUCK TRANSACTION IDENTIFIED**

---

## 🎯 Summary

After enabling TXPOOL and ADMIN RPC methods on the Besu RPC node, we successfully identified the stuck transaction blocking Ethereum Mainnet configuration.

---

## ✅ Completed Actions

### 1. Enabled TXPOOL RPC Methods
- **Script**: `scripts/enable-txpool-rpc-ssh.sh`
- **Result**: ✅ TXPOOL module enabled on RPC node (192.168.11.250)
- **Methods Available**: `txpool_besuTransactions` (working)

### 2. Enabled ADMIN RPC Methods
- **Script**: `scripts/enable-admin-rpc-ssh.sh`
- **Result**: ✅ ADMIN module enabled on RPC node
- **Note**: `admin_removeTransaction` method not available in this Besu version

### 3. Identified Stuck Transaction
- **Hash**: `0x359e4e1501d062e32077ca5cb854c46ef7df4b0233431befad1321c0c7a20670`
- **Nonce**: 23
- **From**: `0x4A666F96fC8764181194447A7dFdb7d471b301C8`
- **Gas Price**: 20 gwei (20,000,000,000 wei)
- **Status**: Stuck in transaction pool

### 4. Found Additional Stuck Transactions
- **Nonce 24**: Gas price 10,000 gwei (extremely high)
- **Nonce 74**: Future transaction
- **Total**: 7 transactions in pool

---

## 🔍 Key Findings

### Transaction Pool Analysis

Using `txpool_besuTransactions`, we found:

1. **7 transactions** in the pool
2. **3 transactions** from deployer address:
   - Nonce 23: 20 gwei (stuck - blocking)
   - Nonce 24: 10,000 gwei (extremely high)
   - Nonce 74: 10 gwei (future transaction)

3. **Current on-chain nonce**: 23 (matches stuck transaction)

### Besu RPC Methods Available

- ✅ `txpool_besuTransactions` - Returns all transactions in pool
- ❌ `txpool_content` - Not available
- ❌ `txpool_status` - Not available
- ❌ `txpool_clear` - Not available
- ❌ `admin_removeTransaction` - Not available in this Besu version

---

## 🔧 Resolution Options

### Option 1: Replace Transaction with Higher Gas Price (RECOMMENDED)

Since the stuck transaction has a gas price of 20 gwei, send a replacement with a much higher gas price:

```bash
# Use gas price > 10,000 gwei to exceed nonce 24's gas price
cast send <contract> <function> <args> \
  --rpc-url http://192.168.11.250:8545 \
  --private-key $PRIVATE_KEY \
  --gas-price 50000000000000 \  # 50,000 gwei
  --nonce 23 \
  --gas-limit 200000
```

**Note**: Besu requires the replacement gas price to be higher than the existing transaction by the `tx-pool-price-bump` percentage (default 10%).

### Option 2: Restart Besu RPC Node

Restarting the RPC node will clear its local mempool, but the transaction may persist in validator nodes:

```bash
# On Proxmox host
pct exec 2500 -- systemctl restart besu-rpc
```

### Option 3: Use Different Deployer Account

Create and fund a new account to bypass the stuck nonce:

```bash
# Create new account
cast wallet new

# Fund from existing account
cast send <new-address> --value 10ether \
  --rpc-url http://192.168.11.250:8545 \
  --private-key $PRIVATE_KEY
```

### Option 4: Wait for Transaction Retention Period

The transaction pool has a retention period (`tx-pool-retention-hours`, default 6 hours). After this period, invalid transactions should be removed automatically.

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## 📋 Scripts Created

1. **`scripts/enable-txpool-rpc-ssh.sh`** - Enable TXPOOL via SSH
2. **`scripts/enable-admin-rpc-ssh.sh`** - Enable ADMIN via SSH
3. **`scripts/resolve-stuck-transaction-besu-qbft.sh`** - Comprehensive resolution script
4. **`scripts/remove-stuck-transaction-besu.sh`** - Remove specific transaction

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## 🎯 Next Steps

1. **Try replacement transaction** with gas price > 50,000 gwei
2. **If replacement fails**, restart all Besu nodes (validators + RPC)
3. **If still stuck**, use a different deployer account
4. **Monitor transaction pool** using `txpool_besuTransactions`

---

## 📊 Current Status

- ✅ TXPOOL enabled
- ✅ ADMIN enabled
- ✅ Stuck transaction identified (nonce 23)
- ⏳ Waiting for replacement transaction or node restart

---

**Last Updated**: $(date)  
**Resolution**: ⏳ **IN PROGRESS - REPLACEMENT TRANSACTION PENDING**

