# Info Endpoint Status - info.defi-oracle.io

**Date**: 2026-01-05  
**Status**: ⚠️ **PARTIAL - JSON Working, HTML 502 Error**

---

## Current Status

### ✅ Working Endpoints

| Endpoint | Status | Response |
|----------|--------|----------|
| `/api/chain` | ✅ Working | Returns JSON chain data (480 bytes) |
| `/chain.json` | ✅ Working | Returns JSON chain data (480 bytes) |

### ⚠️ Issue

| Endpoint | Status | Issue |
|----------|--------|-------|
| `/` (HTML) | ❌ 502 Error | Cloudflare edge error (Nginx serves correctly locally) |

---

## Verification Results

### ✅ Local Access (via Nginx directly)

**HTML Page**:
```bash
curl http://127.0.0.1:80 -H 'Host: info.defi-oracle.io'
```
**Result**: ✅ Returns HTML (200 OK, 7157 bytes)

**JSON Data**:
```bash
curl http://127.0.0.1:80/chain.json -H 'Host: info.defi-oracle.io'
```
**Result**: ✅ Returns JSON (200 OK)

**API Endpoint**:
```bash
curl http://127.0.0.1:80/api/chain -H 'Host: info.defi-oracle.io'
```
**Result**: ✅ Returns JSON (200 OK)

### ⚠️ Public HTTPS Access

**HTML Page**:
```bash
curl https://info.defi-oracle.io
```
**Result**: ❌ 502 Bad Gateway (Cloudflare error)

**JSON Data**:
```bash
curl https://info.defi-oracle.io/chain.json
```
**Result**: ✅ Returns JSON (200 OK) - **WORKING**

**Note**: Both `/api/chain` and `/chain.json` work correctly via HTTPS

**API Endpoint**:
```bash
curl https://info.defi-oracle.io/api/chain
```
**Result**: ✅ Returns JSON (200 OK)

---

## Root Cause Analysis

### Nginx Configuration
- ✅ Server block configured correctly for `info.defi-oracle.io`
- ✅ Files accessible locally
- ✅ All endpoints respond correctly when accessed directly

### Cloudflare Tunnel
- ⚠️ Tunnel routing configured to `http://127.0.0.1:80`
- ⚠️ JSON endpoints work (smaller response size)
- ❌ HTML endpoint fails (larger response - 7157 bytes)
- ⚠️ Possible timeout or buffering issue with larger responses

### Observations
1. **Small responses work**: `/api/chain` and `/chain.json` both work (480 bytes)
2. **Large response fails**: `/` (HTML, 7157 bytes) returns 502
3. **Local access works**: Direct Nginx access returns 200 OK
4. **Cloudflare error**: 502 is coming from Cloudflare edge, not Nginx

---

## Possible Causes

1. **Cloudflare Tunnel Timeout**: The tunnel may be timing out on larger responses
2. **Cloudflare Buffer Limit**: There may be a buffer size limit in the tunnel
3. **Connection Issue**: The tunnel connection may be dropping for longer responses
4. **Tunnel Configuration**: The tunnel may need specific timeout/buffer settings

---

## Recommendations

### Option 1: Check Cloudflare Tunnel Configuration
Verify tunnel settings in Cloudflare Dashboard:
- Check timeout settings
- Verify buffer size limits
- Review tunnel health status

### Option 2: Optimize HTML Response
- Minify the HTML file to reduce size
- Enable gzip compression in Nginx
- Split content into smaller chunks if needed

### Option 3: Use CDN Caching
- Enable Cloudflare caching for static content
- Set appropriate cache headers
- Use Cloudflare's HTML minification

### Option 4: Direct File Serving
- Consider serving HTML from a CDN
- Use Cloudflare Pages or Workers
- Serve static files directly from Cloudflare

---

## Current Workaround

**For JSON Data** (Working):
- Use `/api/chain` or `/chain.json` endpoints
- Both return complete chain information
- Suitable for API integrations

**For HTML Page** (Temporary):
- Access via direct IP (if exposed)
- Or wait for tunnel configuration fix

---

## Next Steps

1. **Investigate Cloudflare Tunnel Configuration**
   - Check tunnel timeout settings
   - Review buffer size limits
   - Verify tunnel health

2. **Optimize Nginx Configuration**
   - Enable gzip compression
   - Add appropriate cache headers
   - Optimize response buffering

3. **Test with Smaller HTML**
   - Create a minimal test HTML page
   - Verify if size is the issue
   - Gradually increase size to find limit

---

**Status**: 
- ✅ **JSON endpoints fully operational** (`/api/chain` and `/chain.json`)
- ⚠️ **HTML endpoint** (`/`) returns 502 from Cloudflare edge, but Nginx serves it correctly locally (200 OK)
- **Root cause**: Likely Cloudflare edge timeout or caching issue, not Nginx configuration

**Recommendation**: The JSON endpoints provide all necessary chain information. The HTML page issue may resolve after Cloudflare cache clears or tunnel configuration updates.
