# RPC Thirdweb Configuration Fix - Complete

**Date**: 2026-01-02  
**Status**: ✅ **CONFIGURATION UPDATED**  
**Domain**: `rpc.public-0138.defi-oracle.io`  
**VMID**: 2400

---

## ✅ Issues Fixed

### 1. RPC Endpoint Configuration ✅
- ✅ **Nginx Updated**: Now handles both HTTP and WebSocket on port 443
- ✅ **Tunnel Route Updated**: Points to Nginx (port 80) instead of directly to Besu
- ✅ **WebSocket Support**: Automatically routes WebSocket requests to port 8546
- ✅ **HTTP RPC**: Routes HTTP requests to port 8545

### 2. EIP-7702 Support Status ⚠️
- ⚠️ **Current Status**: Genesis file uses London fork (older)
- ⚠️ **Requirement**: EIP-7702 requires Cancun fork or later
- ⚠️ **Besu Version**: Needs to be 24.1.0 or later for EIP-7702 support
- ℹ️ **Note**: EIP-7702 is automatically enabled if Cancun fork is active

---

## 🔧 Configuration Changes

### Nginx Configuration Updated

**File**: `/etc/nginx/sites-available/rpc-thirdweb`

**Changes**:
- Single server block on port 443 handles both HTTP and WebSocket
- Automatically detects WebSocket upgrade requests
- Routes WebSocket to `127.0.0.1:8546`
- Routes HTTP to `127.0.0.1:8545`
- Proper WebSocket headers configured
- Extended timeouts for WebSocket connections

**Key Features**:
- ✅ WebSocket detection via `$http_upgrade` header
- ✅ Automatic backend routing (8545 for HTTP, 8546 for WebSocket)
- ✅ CORS headers for Thirdweb compatibility
- ✅ Cloudflare IP trust configuration
- ✅ SSL/TLS with Cloudflare Origin Certificate

### Cloudflare Tunnel Route Updated

**Tunnel ID**: `26138c21-db00-4a02-95db-ec75c07bda5b`

**Previous Configuration**:
- Route: `rpc.public-0138.defi-oracle.io` → `http://127.0.0.1:8545` (direct to Besu)

**New Configuration**:
- Route: `rpc.public-0138.defi-oracle.io` → `http://127.0.0.1:80` (via Nginx)

**Benefits**:
- ✅ Nginx handles SSL termination
- ✅ Nginx routes WebSocket properly
- ✅ Better error handling and logging
- ✅ CORS support for web applications

---

## 📋 Current RPC Endpoint Configuration

### HTTP RPC
- **URL**: `https://rpc.public-0138.defi-oracle.io`
- **Port**: 443 (HTTPS)
- **Backend**: `127.0.0.1:8545` (Besu HTTP RPC)
- **Protocol**: HTTP/1.1, HTTP/2

### WebSocket RPC
- **URL**: `wss://rpc.public-0138.defi-oracle.io`
- **Port**: 443 (WSS)
- **Backend**: `127.0.0.1:8546` (Besu WebSocket RPC)
- **Protocol**: WebSocket (upgrade from HTTP)

---

## 🔍 EIP-7702 Support

### Current Status
- **Genesis Fork**: London (block 0)
- **EIP-7702 Support**: ❌ Not enabled (requires Cancun fork)

### To Enable EIP-7702

1. **Update Genesis File**:
   - Add Cancun fork configuration to `/genesis/genesis.json`
   - Set `cancunBlock: 0` (or appropriate block number)

2. **Verify Besu Version**:
   - Requires Besu 24.1.0 or later
   - Check version: `besu --version`

3. **Restart Besu Service**:
   ```bash
   systemctl restart besu-rpc.service
   ```

### EIP-7702 Details
- **EIP Number**: 7702
- **Title**: Set EOA account code
- **Status**: Cancun fork feature
- **Description**: Allows setting code for Externally Owned Accounts (EOAs)

**Note**: EIP-7702 is automatically enabled when Cancun fork is active in the genesis file, provided Besu version supports it.

---

## 🧪 Testing

### Test HTTP RPC
```bash
curl -k https://rpc.public-0138.defi-oracle.io \
  -X POST \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
```

**Expected Response**:
```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x8a"
}
```

### Test WebSocket RPC
Use a WebSocket client to connect to:
```
wss://rpc.public-0138.defi-oracle.io
```

### Test from Container
```bash
# HTTP RPC
curl -s -X POST http://127.0.0.1:8545 \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'

# Via Nginx
curl -s -H 'Host: rpc.public-0138.defi-oracle.io' \
  http://127.0.0.1/health
```

---

## 📁 Files Modified

### Scripts Created
- `scripts/fix-rpc-thirdweb-config.sh` - Main fix script
- `scripts/enable-eip-7702-besu.sh` - EIP-7702 check script

### Configuration Files Updated
- `/etc/nginx/sites-available/rpc-thirdweb` - Nginx configuration
- Cloudflare Tunnel route (via API)

---

## 🚀 Next Steps

### Immediate (Done)
- ✅ Nginx configuration updated
- ✅ Tunnel route updated
- ✅ WebSocket support configured

### For EIP-7702 Support
1. **Update Genesis File**:
   - Add Cancun fork configuration
   - Set appropriate block number

2. **Verify Besu Version**:
   - Check if version >= 24.1.0
   - Upgrade if necessary

3. **Restart Services**:
   - Restart Besu after genesis update
   - Verify EIP-7702 is active

### For Thirdweb Integration
The RPC endpoint is now properly configured:
- ✅ HTTP RPC: `https://rpc.public-0138.defi-oracle.io`
- ✅ WebSocket RPC: `wss://rpc.public-0138.defi-oracle.io`
- ✅ Both routes through Nginx for proper handling
- ✅ CORS enabled for web applications

---

## 📚 Related Documentation

- [Thirdweb RPC Setup](/docs/04-configuration/THIRDWEB_RPC_CLOUDFLARE_SETUP.md)
- [RPC DNS Configuration](/docs/04-configuration/RPC_DNS_CONFIGURATION.md)
- [VMID 2400 Setup](VMID2400_SETUP_COMPLETE.md)

---

## ✅ Summary

**RPC Configuration**: ✅ **FIXED**
- HTTP and WebSocket routing properly configured
- Tunnel route points to Nginx
- Both protocols work on port 443

**EIP-7702 Support**: ⚠️ **REQUIRES GENESIS UPDATE**
- Current genesis uses London fork
- Need to add Cancun fork for EIP-7702
- Requires Besu 24.1.0+

The RPC endpoint is now properly configured for Thirdweb integration. EIP-7702 support requires updating the genesis file to include the Cancun fork.

---

**Last Updated**: 2026-01-02  
**Configuration Method**: Automated via scripts
