# Windows Print Service Network Configuration Guide

## Current Issue
Your Flask server (Linux) cannot connect to Windows Print Service because they're on different machines.

## Solution Options

### Option 1: Same Machine Setup
If both Flask and Windows service are on the same machine:
```python
WINDOWS_PRINT_SERVICE_URL = "http://localhost:8765"
```

### Option 2: Different Machines (Recommended)
If Flask server (Linux) and Windows service are on different machines:

1. **Find Windows Machine IP Address:**
   ```cmd
   # On Windows machine, run:
   ipconfig
   # Look for IPv4 Address, e.g., 192.168.1.100
   ```

2. **Update Configuration:**
   ```python
   # In /app/print_config.py, change:
   WINDOWS_PRINT_SERVICE_URL = "http://192.168.1.100:8765"
   ```

3. **Test Connection:**
   ```bash
   # From Linux machine, test:
   curl http://192.168.1.100:8765/health
   ```

### Option 3: Windows Firewall Configuration
Ensure Windows allows incoming connections on port 8765:

1. **Windows Firewall Settings:**
   - Control Panel → System and Security → Windows Defender Firewall
   - Advanced Settings → Inbound Rules → New Rule
   - Port → TCP → 8765 → Allow the connection

2. **Test from Linux:**
   ```bash
   telnet [WINDOWS_IP] 8765
   ```

### Option 4: Port Forwarding/Tunneling
If direct connection isn't possible, set up SSH tunnel or port forwarding.

## Quick Fix for Testing

1. **Get Windows IP Address**
2. **Update print_config.py with the IP**
3. **Restart Flask server**
4. **Test printing**

## Current Status
- ✅ Windows Print Service: Running (localhost:8765/health works)
- ❌ Network Connection: Flask can't reach Windows service
- 🔧 Fix Needed: Update WINDOWS_PRINT_SERVICE_URL with correct IP

## Example Commands

```bash
# 1. Find Windows IP (run on Windows):
# ipconfig | findstr IPv4

# 2. Test connection (run on Linux):
# curl http://[WINDOWS_IP]:8765/health

# 3. Update config and restart Flask
```