lsocket: simple and easy socket support for lua

What is it?

lsocket is a library to provide socket programming support for lua. It is not intended to be a complete socket api, but easy to use and good enough for most tasks. Both IPv4 and IPv6 are supported, as are tcp and udp, and also IPv4 broadcasts and IPv6 multicasts. Also, lsocket is almost nonblocking, meaning that nothing blocks except for nameserver lookups.

What's new in version 1.4.1 (2017-03-16)

Fixed memory leak discovered by 云风 Cloud Wu
proper tostring method

What's new in version 1.4 (2015-04-17)

Lua 5.3 compatibility (or rather, some cleanup in the number handling department)
socket fd's are checked against FD_SETSIZE now in select()
changed build type to make
converted all documentation to markdown
fixed bug: send and sendto would not correctly return false on timeout (patch by 云风)

Documentation

README: lsocket README file
README_ARESOLVER: README for the experimental async_resolver library
CHANGELOG: what has changed from version to version.

Download

You can get lsocket-1.4.1 by clicking on this link, or by installing it from the luarocks repository. If you fetch it from here, the included README gives hints on how to build it.

There is also a repository at https://codeberg.org/gnarz/lsocket which gets changes I make between the releases.

License

The lsocket module and all accompanying documentation and additional source code is released under the terms of the MIT license.

Copyright (c) 2013-2017 Gunnar Zötl 
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.

Contact

If you have anything to say about this, comments, bug reports, whatever, feel free to email them to