Observe Community MCP Server

events {
    worker_connections 1024;
}

http {
    upstream observe_mcp_backend {
        server observe-mcp:8000;
    }

    # Rate limiting
    limit_req_zone $binary_remote_addr zone=api:10m rate=10r/s;

    server {
        listen 80;
        server_name localhost;

        # Security headers
        add_header X-Frame-Options DENY;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";

        # Rate limiting
        limit_req zone=api burst=20 nodelay;

        # Proxy to MCP server
        location / {
            proxy_pass http://observe_mcp_backend;
            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;
            
            # SSE (Server-Sent Events) support for MCP
            proxy_buffering off;
            proxy_cache off;
            proxy_set_header Connection '';
            proxy_http_version 1.1;
            chunked_transfer_encoding off;
            
            # Timeouts
            proxy_connect_timeout 60s;
            proxy_send_timeout 60s;
            proxy_read_timeout 60s;
        }

        # Note: MCP server doesn't expose HTTP health endpoint
        # Health checks are handled at container level
    }

    # SSL configuration (uncomment and configure for HTTPS)
    # server {
    #     listen 443 ssl http2;
    #     server_name your-domain.com;
    #     
    #     ssl_certificate /etc/nginx/ssl/cert.pem;
    #     ssl_certificate_key /etc/nginx/ssl/key.pem;
    #     
    #     # Modern SSL configuration
    #     ssl_protocols TLSv1.2 TLSv1.3;
    #     ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384;
    #     ssl_prefer_server_ciphers off;
    #     
    #     location / {
    #         proxy_pass http://observe_mcp_backend;
    #         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;
    #         
    #         # SSE support
    #         proxy_buffering off;
    #         proxy_cache off;
    #         proxy_set_header Connection '';
    #         proxy_http_version 1.1;
    #         chunked_transfer_encoding off;
    #     }
    # }
}