Re: Besides LuaSocket, is there any other library that provides support for the TCP and UDP transport layers for Lua?

[Sean Conner <sean@...>]

It was thus said that the Great 孙世龙 sunshilong once stated:
> Hi, list
> 
> Besides LuaSocket, is there any other library that provides support
> for the TCP and UDP transport layers for Lua?
> 
> I am using vanilla Lua.
> 
> Stable and open source project is preferred.
> Any guideline or suggestion is welcome.

  I wrote my own [1].  At the lowest level, I have org.conman.net, which
supports making TCP, UDP, raw (if you call the functions correctly) and Unix
sockets.  It also supports both IPv4 and IPv6 but this module is pretty low
level.

  Stepping up one level, I have org.conman.net.tcp and org.conman.net.tls,
which gives back a Lua file-like object that support read() and write() you
would expect.  And yes, there is TLS support, but it requires libtls [2].

  And if you want to write an event based server, I have org.conman.nfl.tcp
and org.conman.nfl.tls, which handle each connection in a coroutine.  I have
two projects that use this, one for TCP [3] and one for TLS [4][5].

  This code has been written for POSIX systems.

  -spc

[1]	Everything I mention is available here:

	https://github.com/spc476/lua-conmanorg

[2]	A version for OpenSSL: https://causal.agency/libretls/

[3]	Starting here, which shows the main loop of each coroutine and how
	to run the main event loop.  This is for TCP:

	https://github.com/spc476/port70/blob/1d59a312fde53219e303504febc6013f3991baff/port70.lua#L141

[4]	Starting here, which shows the main loop of each coroutine and how
	to run the main event loop.  This is for TLS:

	https://github.com/spc476/GLV-1.12556/blob/d2e32f97dd882670e206f57765425ee6c8d183ab/Lua/GLV-1.12556.lua#L288

[5]	The list of modules used and what they do:

	org.conman.net	   - low level socket and IP address code
	org.conman.net.tcp - blocking IO for TCP connections
	org.conman.net.tls - blocking IO for TLS connections
	org.conman.net.ios - provides a Lua file-like object API (also used
			     for the non-blocking IO routines)
	org.conman.nfl     - main event driver
	org.conman.nfl.tcp - event driven IO for TCP connections
	org.conman.nfl.tls - event driven IO for TLS connections
	org.conman.pollset - select/poll/epoll/kqueue interface (same API
			     presented for all backends)
	org.conman.tls     - wrapper around libtls

	There are some other modules used, but those are the main ones
	centered around network activity.