AnyEvent

Blurb

This module allows module authors to use those events internally without forcing users of the module to use a specific event loop, without adding noticable overhead. Currently supported event loops are EV, Event, Glib/Gtk2, Tk, Qt, Event::Lib, Irssi, IO::Async and POE (and thus also WxWidgets and Prima). It also comes with a very fast (see benchmarks in the main manual page) Pure Perl event loop and doesn't rely on XS, which ensures that your program will always run even when no C-based event loop is available.

In addition to the event core (which might be all you need), AnyEvent comes with an optional, fully asynchronous, pure-perl DNS resolver library supporting UDP, TCP and EDNS0, with many utility functions to "just resolve" stuff without having to instantiate even a resolver object (and including an equivalent of C).

The AnyEvent::Socket offers utility functions to make handling TCP connections (100% non-blocking, including DNS resolution, with both IPv4 and IPv6) and addresses as easy as possible, to the point of making IPv6 completely transparent.

Lastly, AnyEvent::Handle offers a powerful framework for asynchronous and buffered protocol handling. You can push multiple read event handlers to parse your protocol and start TLS/SSL negotiation transparently (and fully non-blocking) at any time, in both server and client mode.