Error: poll upd failed: invalid argument

[Yorgos Thessalonikefs]

Hi Marco,

Thanks for bringing this up!
Please do. From a quick look I think you are right
and probably we need to define at least a single item there with a 
negative fd.

Best regards,
-- Yorgos

On 14/03/2025 13:24, Marco Peretti - Contractor via Unbound-users wrote:
> Hello,
> 
> At one of our customers' sites we have seen the error mentioned in the 
> subject line (on WIndows boxes).
> 
> I don't know yet what might have triggered that error, but when I look 
> at the source code, if I am reading it correctly, I can see why the 
> error was logged:
> 
> WSAPoll(NULL, 0, (SEND_BLOCKED_WAIT_TIMEOUT/10)<<(retries+1));
> 
> I don't think that the first argument can be NULL. See this post 
> <https://stackoverflow.com/questions/55524397/why-when-i-add-pollhup-as- 
> event-wsapoll-returns-error-invalid-arguments> on StackOverflow and the 
> doc for WSAPoll <https://learn.microsoft.com/en-us/windows/win32/api/ 
> winsock2/nf-winsock2-wsapoll>.
> 
> Should I file an issue on Github?
> 
> Thanks,
> 
> Marco
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