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studspider/doc/NGINX_SETUP.md
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2025-12-21 16:02:09 -08:00

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# Nginx Reverse Proxy Configuration for studspider
## Overview
When using nginx as a reverse proxy:
- **Nginx handles HTTPS** (SSL/TLS termination)
- **studspider runs on HTTP** internally (no SSL needed)
- **nginx forwards requests** to studspider
## Architecture
```
Internet (HTTPS) → nginx (443) → studspider (7432/HTTP)
↓
Handles SSL certificates
Handles HTTPS traffic
Forwards to HTTP backend
```
## Benefits
✓ **No SSL certificates needed in studspider**
✓ **nginx handles SSL efficiently**
✓ **Easy certificate renewal** (Let's Encrypt)
✓ **Better performance** (nginx is optimized for this)
✓ **Additional security** (rate limiting, IP filtering, etc.)
---
## Configuration Examples
### Basic Configuration (HTTP → HTTPS redirect + webhook proxy)
Create `/etc/nginx/sites-available/studspider`:
```nginx
# Redirect HTTP to HTTPS
server {
listen 80;
server_name studspider.sh www.studspider.sh;
location / {
return 301 https://$host$request_uri;
}
}
# HTTPS server
server {
listen 443 ssl http2;
server_name studspider.sh www.studspider.sh;
# SSL certificates (Let's Encrypt)
ssl_certificate /etc/letsencrypt/live/studspider.sh/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/studspider.sh/privkey.pem;
# SSL configuration (modern, secure)
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;
# Logs
access_log /var/log/nginx/studspider_access.log;
error_log /var/log/nginx/studspider_error.log;
# Webhook endpoint (Square webhooks)
location /hook {
proxy_pass http://localhost:7432/hook;
# Forward headers
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# Timeouts
proxy_connect_timeout 60s;
proxy_send_timeout 60s;
proxy_read_timeout 60s;
# Disable buffering for real-time responses
proxy_buffering off;
}
# Main API endpoint (optional)
location / {
proxy_pass http://localhost:7432/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
```
### Separate Port Configuration (webhook on different port)
```nginx
server {
listen 443 ssl http2;
server_name studspider.sh;
ssl_certificate /etc/letsencrypt/live/studspider.sh/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/studspider.sh/privkey.pem;
# Main API
location / {
proxy_pass http://localhost:7432/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto https;
}
}
# Separate server for webhooks on different port
server {
listen 8443 ssl http2;
server_name studspider.sh;
ssl_certificate /etc/letsencrypt/live/studspider.sh/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/studspider.sh/privkey.pem;
# Webhook only
location /hook {
proxy_pass http://localhost:8080/hook; # studspider webhook port
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto https;
}
}
```
### With Rate Limiting (recommended for webhooks)
```nginx
# Define rate limit zone (outside server block)
limit_req_zone $binary_remote_addr zone=webhook_limit:10m rate=10r/s;
server {
listen 443 ssl http2;
server_name studspider.sh;
ssl_certificate /etc/letsencrypt/live/studspider.sh/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/studspider.sh/privkey.pem;
# Webhook with rate limiting
location /hook {
# Rate limit: 10 requests per second per IP
limit_req zone=webhook_limit burst=20 nodelay;
# Only allow POST requests
limit_except POST {
deny all;
}
proxy_pass http://localhost:7432/hook;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto https;
}
}
```
---
## Setup Steps
### 1. Install nginx (if not already installed)
```bash
# Ubuntu/Debian
sudo apt update
sudo apt install nginx
# CentOS/RHEL
sudo yum install nginx
```
### 2. Get SSL Certificate (Let's Encrypt - Free!)
```bash
# Install certbot
sudo apt install certbot python3-certbot-nginx
# Get certificate for your domain
sudo certbot --nginx -d studspider.sh -d www.studspider.sh
# Certbot will automatically:
# 1. Generate certificate
# 2. Configure nginx
# 3. Set up auto-renewal
```
### 3. Create nginx Configuration
```bash
# Create config file
sudo nano /etc/nginx/sites-available/studspider
# Paste one of the configurations above
# Create symbolic link to enable site
sudo ln -s /etc/nginx/sites-available/studspider /etc/nginx/sites-enabled/
# Test configuration
sudo nginx -t
# Reload nginx
sudo systemctl reload nginx
```
### 4. Start studspider (HTTP only, no SSL needed!)
```bash
# Simple - single port
python src/test_server.py --port 7432
# Or with separate webhook port
python src/test_server.py --port 7432 --hook-port 8080
```
### 5. Configure Square Webhook URL
In Square Developer Dashboard:
- **Webhook URL**: `https://studspider.sh/hook`
- **Certificate**: Upload the P7B file (see below)
### 6. Generate P7B for Square
```bash
# Convert your Let's Encrypt certificate to P7B for Square
python convert_to_p7b.py --cert /etc/letsencrypt/live/studspider.sh/fullchain.pem --output square.p7b
# Upload square.p7b to Square Dashboard
```
---
## Systemd Service (Run studspider at boot)
Create `/etc/systemd/system/studspider.service`:
```ini
[Unit]
Description=studspider - LEGO Inventory Sync Service
After=network.target
[Service]
Type=simple
User=www-data
WorkingDirectory=/opt/studspider
Environment="PATH=/opt/studspider/.venv/bin"
ExecStart=/opt/studspider/.venv/bin/python src/test_server.py --port 7432
Restart=always
RestartSec=10
# Logging
StandardOutput=append:/var/log/studspider/stdout.log
StandardError=append:/var/log/studspider/stderr.log
[Install]
WantedBy=multi-user.target
```
Enable and start:
```bash
# Create log directory
sudo mkdir -p /var/log/studspider
sudo chown www-data:www-data /var/log/studspider
# Enable service
sudo systemctl enable studspider
# Start service
sudo systemctl start studspider
# Check status
sudo systemctl status studspider
# View logs
sudo journalctl -u studspider -f
```
---
## Testing
### Test nginx configuration
```bash
sudo nginx -t
```
### Test studspider locally
```bash
curl http://localhost:7432/hook -X POST -H "Content-Type: application/json" -d '{"test":"data"}'
```
### Test through nginx
```bash
curl https://studspider.sh/hook -X POST -H "Content-Type: application/json" -d '{"test":"data"}'
```
### Monitor logs
```bash
# nginx logs
sudo tail -f /var/log/nginx/studspider_access.log
sudo tail -f /var/log/nginx/studspider_error.log
# studspider logs
tail -f ./logs/studspider.log
```
---
## Troubleshooting
### 502 Bad Gateway
- Check if studspider is running: `ps aux | grep test_server.py`
- Check the port matches nginx config
- Check firewall isn't blocking internal connections
### Certificate Errors
- Ensure Let's Encrypt renewal is working: `sudo certbot renew --dry-run`
- Check certificate files exist and have correct permissions
### Webhook Not Receiving
- Verify nginx is forwarding: Check nginx access logs
- Verify studspider is receiving: Check studspider logs
- Test locally first, then through nginx
### Connection Refused
- Check studspider is listening: `sudo netstat -tlnp | grep 7432`
- Check nginx proxy_pass points to correct host:port
---
## Summary
### With nginx reverse proxy:
✓ **studspider runs simple HTTP** (no SSL certificates needed)
```bash
python src/test_server.py --port 7432
```
✓ **nginx handles HTTPS** (manages certificates automatically)
✓ **Square gets HTTPS webhook** (`https://studspider.sh/hook`)
✓ **You upload P7B to Square** (converted from nginx's certificate)
### This is the recommended production setup!