Asynchronous socket library?

I'm looking for an ansynchronous socket ( TCP/IP and UDP ) library for lua. I've found asok.lua (http://ztact.com/software/asok.lua) but the last release of that was almost 1 year ago and was 'beta quality'. I'll try and get that running but I was curious if there are others available.

The goal is to allow our users to write scripts which interact with devices on the network

(1) without having to learn the Berkley sockets interface

(2) ensure that their script don't block execution for too long a time

(3) without having to understand coroutines and yield()

(4) run on both Win32 and Linux platforms

Something similar to the .NET System.Net.Sockets would be ideal - each call that could block ( Connect, Send, Receive ) has both a Begin* and End* model and code might look something like

function ReceiveCallBack( arg, socket )

data, err = socket:EndReceive(arg)

if err then print( err ) end

print( "got "..data.." back")

end

function SendCallback( arg, socket )

err = socket:EndSend(arg)

if err then print( err )

-- read until null on stream

else socket:BeginReceive( ReceiveCallback ) end

end

function ConnectCallback( arg, socket )

err = socket:EndConnect(arg)

if err then print( err )

else socket:BeginSend( "send a string", SendCallback ) end

end

socket, err = Socket.New()

socket.Connect( "123.123.123.123", 23, ConnectCallBack )

Optionally, an interface that looked something like Flash XMLSocket would also work - it's event handler based

function ReceiveHandler( socket, data )

print( "got "..data.." back")

end

function ConnectHandler( socket )

socket.Send("send a string" )

end

function ErrorHandler( err )

print( err )

end

socket, err = Socket.New()

socket:_OnReceive_ = ReceiveHandler

socket:_OnError_ = ErrorHandler

socket:_OnConnect_ = ConnectHandler

socket.Connect("123.123.123.123", 23)

Thanks-

John

John Dunn

Senior Software Engineer

Systems Development Group

QSC Audio Products, LLC

4900 Pearl East Circle, Suite 205E

Boulder, CO 80301

303.951.3000 ext 302

john_dunn@qscaudio.com

www.qscaudio.com

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