Re: [PATCH] "ncat -l --send-only" not sending only

[Kris Katterjohn <katterjohn () gmail com>]

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On 07/24/2009 01:53 PM, David Fifield wrote:
> I've found a bug with this. Try running
>
> ncat -l --send-only -vvv
> ncat localhost
>
> Then send something on the client. The server will start using 100% CPU
> as it repeatedly selects on the socket:
>
> Connection from 127.0.0.1.
> DEBUG: Added fd 4 to list, nfds 3, maxfd 4
> DEBUG: selecting, fdmax 4
> DEBUG: select returned 1 fds ready
> DEBUG: fd 4 is ready
> DEBUG: selecting, fdmax 4
> DEBUG: select returned 1 fds ready
> DEBUG: fd 4 is ready
> DEBUG: selecting, fdmax 4
> DEBUG: select returned 1 fds ready
> DEBUG: fd 4 is ready
> ...

Well that sucks!

> This would not be hard to fix. It would just take having two lists of
> socket descriptors, one to listen to read events and one to keep a list
> of clients to broadcast to. They would be the same except in the
> --send-only case. Do you want to write patch, Kris? Otherwise this would
> be a job for a feature creeper or someone like Etienne Maynier who has
> volunteered to help.

I will (or would) do it, but I honestly don't know how soon I'll get to it.  I
appreciate the offer (rather than just assigning it to whoever), but somebody
else can take care of it simply to get it done faster.

> David Fifield

Thanks,
Kris Katterjohn

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