fixed_nginx_config.conf

# Define upstream servers for each service (using explicit IPv4 addresses)
upstream transcribe_api {
    server 127.0.0.1:8000;
}

upstream relay_service {
    server 127.0.0.1:9001;
}

upstream panel_service {
    server 127.0.0.1:9002;
}

upstream wallet_service {
    server 127.0.0.1:9003;
}

# WebSocket connection upgrade mapping
map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

# Main server block listening on HTTP
server {
    listen 80; # Nginx listens on port 80 locally
    server_name _; # Accept all hostnames (localhost, ngrok, custom domains, etc.)

    # Basic Security Headers
    add_header X-Frame-Options "SAMEORIGIN";
    add_header X-Content-Type-Options "nosniff";
    add_header X-XSS-Protection "1; mode=block";
    server_tokens off;

    # Increase buffer sizes for large files
    client_max_body_size 100M;

    # Forward client IP and protocol
    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;
    proxy_set_header Host $host;

    # Health check endpoint - exact match first
    location = /health {
        access_log off;
        return 200 "healthy\n";
        add_header Content-Type text/plain;
    }

    # Relay WebSocket service - handle both /relay and /relay/
    location ~ ^/relay/?$ {
        # Strip the /relay prefix (with or without trailing slash) when forwarding to the service
        rewrite ^/relay/?$ / break;
        
        proxy_pass http://relay_service;
        
        # WebSocket-specific headers
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        
        # Extended timeouts for WebSocket connections
        proxy_read_timeout 86400s;
        proxy_send_timeout 86400s;
        proxy_connect_timeout 60s;
        
        # Additional headers for tunnel compatibility
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Real-IP $remote_addr;
    }

    # Transcribe service
    location /transcribe/ {
        rewrite ^/transcribe/(.*)$ /$1 break;
        proxy_pass http://transcribe_api;
    }

    # Wallet service
    location /wallet/ {
        rewrite ^/wallet/(.*)$ /$1 break;
        proxy_pass http://wallet_service;
    }

    # Blossom file storage routes
    location /blossom/ {
        proxy_pass http://panel_service;
        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;
        
        # Disable buffering for file uploads/downloads
        proxy_buffering off;
        proxy_request_buffering off;
        
        # Set appropriate headers
        proxy_set_header Accept-Encoding "";
        
        # Larger timeouts for file operations
        proxy_read_timeout 300s;
        proxy_send_timeout 300s;
        proxy_connect_timeout 60s;
    }

    # Default location - Panel service (frontend + API) - MUST BE LAST
    location / {
        # Add CORS headers for the panel service
        add_header 'Access-Control-Allow-Origin' '*' always;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS' always;
        add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept, Authorization' always;

        # Handle preflight OPTIONS requests
        if ($request_method = 'OPTIONS') {
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'Origin, Content-Type, Accept, Authorization';
            add_header 'Content-Length' 0;
            return 204;
        }

        proxy_pass http://panel_service;
        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;
        
        # Handle WebSocket if needed
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
    }
}