map $http_upgrade $connection_upgrade {
    default upgrade;
    ''      close;
}

server {

    listen 80;
    listen [::]:80;
    server_name instance.example.com;

    access_log /var/log/nginx/instance.example.com-access.log;
    error_log /var/log/nginx/instance.example.com-error.log;

    location / {
    try_files $uri @proxy;
    }

    root /home/mastodon/live/public;

    # add to v1.4 assets
    location ~ ^/(assets|system/media_attachments/files|system/accounts/avatars) {
        add_header Cache-Control "public, max-age=31536000, immutable";
        try_files $uri @proxy;
    }

    location /sw.js {
        add_header Cache-Control "public, max-age=0";
        try_files $uri @proxy;
    }

    location @proxy {
        #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;
        proxy_pass_header Server;
        proxy_pass http://127.0.0.1:3000;
        proxy_buffering off;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        tcp_nodelay on;
    }

     location /api/v1/streaming {
        #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;
        proxy_pass http://127.0.0.1:4000;
        proxy_buffering off;
        proxy_redirect off;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        tcp_nodelay on;
    }

    error_page 500 501 502 503 504 /500.html;
}