Meta

Meta is a small Nginx/PHP tool displaying some informations in order to debug or satisfy your curiosity.

Use

Paths

• /me will redirect to /<your-ip-address>
• /<any-ip-address> will print informations obtained from databases located in the geolite2 directory
• /emoji will print an emoji list
• /<anything-else> will print IP, TCP, TLS and HTTP metadata

Domains

meta.antopie.org have working A (IPv4) and AAAA (IPv6) records

You can test IP version connectivity by forcing it throught:

• ipv4.meta.antopie.org, which only have the A record
• ipv6.meta.antopie.org, which only have the AAAA record

Nginx configuration sample

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name meta.antopie.org;

    root /var/www/meta;
    index index.php;
    try_files $uri/ /;

    location ~ \.php$ {
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php/meta.sock;
        include inc/fastcgi.conf;
        fastcgi_param SSL_CURVES $ssl_curves;
        fastcgi_param SSL_CIPHERS $ssl_ciphers;
        fastcgi_param SSL_CIPHER $ssl_cipher;
        fastcgi_param SSL_PROTOCOL $ssl_protocol;
        fastcgi_param SSL_SESSION_ID $ssl_session_id;
        fastcgi_param NGINX_VERSION $nginx_version;
        fastcgi_param TCPINFO_RTT $tcpinfo_rtt;
        fastcgi_param TCPINFO_RTTVAR $tcpinfo_rttvar;
        fastcgi_param TCPINFO_SND_CWND $tcpinfo_snd_cwnd;
        fastcgi_param TCPINFO_RCV_SPACE $tcpinfo_rcv_space;
        fastcgi_param CONNECTION $connection;
        fastcgi_param CONNECTION_REQUESTS $connection_requests;
        fastcgi_param REQUEST $request;
    }

    location ~ emojis.txt {
        charset utf-8;
    }
}

Resources

Nginx variable list: https://nginx.org/docs/varindex.html

PHP $_SERVER list: https://www.php.net/manual/reserved.variables.server.php

HTTP headers

• https://en.wikipedia.org/wiki/List_of_HTTP_header_fields
• https://developer.mozilla.org/docs/Web/HTTP/Headers
• https://datatracker.ietf.org/doc/html/rfc7231

Free software

Meta is published under AGPLv3+ (see LICENSE), it's source code is available at https://code.antopie.org/miraty/meta. db-reader and geolite2 directories contents have their own licenses.