Showing that IPv4 and IPv6 addresses and connections work in Pyromaniac

by gerph 5 years ago

macOS ◆ xterm-256color ◆ fish 786 views

Pyromaniac has support for both IPv4 and IPv6 (AF_INET and AF_INET6) TCP and UDP socket connections. This is one of the first intentional IPv6 tests with a RISC OS program. The supplied EasySocket module already supported IPv6, because it bypassed the Internet module, which unintentionally gave it support for resolving names to IPv4 or IPv6 addresses and connecting without bothering the user.

IPv6 addresses can be listed with an updated ifconfig tool, although at the present time only a single IPv6 address is listed. The hardware addresses are actually handled by an AF_LINK socket SIOCGIFADDR call, rather than by accessing the exported structures from Socket_InternalLookup, as the kvm access given by the latter is very ugly and difficult to maintain when upgrading (plus harder to implement, if you’re not actually using a BSD stack).

HTTP requests are made with a test binary. The addresses are currently hardcoded into the test binary - Resolver has yet to be updated to provide resolution of the IPv6 addresses - for both the IPv4 and IPv6 addresses of gerph.org. The output here has debug enabled, as that means that we include the Internet module’s printing of the IP address, port, flowinfo and scopeid as it decoded them from the sockaddr_in6 block.

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You can download this recording in asciicast v2 format, as a .cast file.

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asciinema play 290752.cast

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Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/290752.cast',
      document.getElementById('player'),
      { cols: 101, rows: 41 }
    );
  </script>
</body>
</html>

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While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/290752 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.