Re: Buffered reading in LuaSocket..

[Duck <duck@...>]

> Input is buffered in LuaSocket, so I don't
> understand the subject of the message.

I should have said something like: "Buffered reading in Lua atop 
LuaSocket."

> The current API does not support a limit on the size of
> the input when you use patterns "*l" or "*a".

> If you really need to limit the amount of input

I can't write a safe (DoS-resistant) line-oriented server without it, esp. 
for SMTP, not least because there are still SMTP clients which send large 
emails as one huge line of text. I want to be able to detect that the 
amount of SMTP data has exceeded some user-defined maximum _as it exceeds_ 
that maximum, rather than (possily long) after having already received 
(possibly much) more than the maximum.

> you'd have to do something similar to what you suggested,
> although you'd need something slightly more sophisticated.

> I assume you are not using coroutines with non-blocking I/O,
> so I'd implement something like this:

Thanks. Is it better to use select() than to use receive(1) with a timeout 
followed by receive(bytesleft) without one? Errr, yes. I think it is. Much 
clearer, anyway.

Thanks for the speedy response.