[Rspamd-Users] cannot execute /etc/rspamd/custom-ratelimit.lua: attempt to call a nil value

George Asenov george.asenov at wpx.net
Wed Aug 31 13:47:00 UTC 2022

I mean that value which is shown on the UI and should be possible to get 
and use it in the ratelimit script!

On 31-Aug-22 4:38 PM, George Asenov wrote:
> I managed to fix the call to nil error it was caused from a missing end 
> which should close:
> custom_keywords.customrl = function(task)
> Anyone on the second question that left behind
> How can I get [Envelope from] address in the ratelimit script i.e. the 
> real sender even if the user is sending trough sendmail (not 
> authenticated)?
> On 31-Aug-22 2:25 PM, George Asenov wrote:
>> Hi Ged,
>> Thanks for your answer.
>> But my file is 69 lines of code. Most of it is modified example from 
>> the rspamd documentation.
>> The line ratelimit.lua:852 is part of the rspamd source code probably 
>> responsible for loading the custom script.
>> I have tried to comment out many parts of my code and also set some 
>> static values to some of the variables but the error didn't change.
>> Hope someone more familiar with lua (I'm newbie with it) to spot maybe 
>> obvious error in my code.
>> On 31-Aug-22 12:40 PM, G.W. Haywood via Users wrote:
>>> Hi there,
>>> On Wed, 31 Aug 2022, George Asenov wrote:
>>>> I'm trying to write custom ratelimit script but it keeps failing at 
>>>> start with:
>>>> ###########
>>>> lua; ratelimit.lua:852: cannot execute 
>>>> /etc/rspamd/custom-ratelimit.lua: attempt to call a nil value
>>>> ...
>>> I've never in my life written lua code, but seeing an error message
>>> like that would make me ask
>>> "What's at line 852?"
>>> My guess is that it's something with an undefined (nil) value. :)
>>> If there are many things on line 852 capable of taking values you can
>>> try somehow to separate them onto multiple lines.  The error messages
>>> you get might then tell you which of the values caused the problem.
>>> Of course the code you've posted doesn't have anything like 852 lines.
>>> If you think that it really is what's causing the error, first you'll
>>> probably need to find out what other code is wrapped around yours, so
>>> you can count the lines in the same way that the lua interpreter does.
>>> Alternatively you can put some 'do nothing' lines in your code before
>>> (hopefully) the part causing the error, just to see if the line number
>>> in the error message changes.
>>> Generally speaking if you're starting new development from scratch I'd
>>> recommend starting with something very, *very* simple, so that you can
>>> build on something which 'works' - which is usually a lot easier than
>>> trying to fix something which doesn't.  If you started with something
>>> like the code in your post, you could for example comment out lots of
>>> it until you get something which at least runs, even if it doesn't do
>>> what you want when it does.  Then you can incrementally uncomment the
>>> commented parts, so you gradually approach the objective, and errors
>>> are revealed as you uncomment more or less one line of code at a time.
>>> Sorry not to be more help than that.

Warm regards
George A.
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