[Unbound-users] Release of unbound 1.1.0

Aaron Hopkins lists at die.net
Thu Nov 20 19:23:04 UTC 2008

On Thu, 20 Nov 2008, Wouter Wijngaards wrote:
> I am curious why you are getting the accept failure. What resource is
> temporarily unavailable?  Is the kernel running out of TCP buffers? Is
> there a problem with ulimit(number of files) ?

"Resource temporarily unavailable" is EAGAIN, I think.  Which is documented
in Linux's man accept(2) as:

       The socket is marked non-blocking and no connections are present to be

There is no guarantee that select() returning activity on a listen()ing
socket will result in a successful accept().  I'm guessing something is
making a TCP connection to this port, causing select() and friends to return
that there's work to be done, but closing the connection before unbound

> The above fix is in svn trunk for 1.1.1 release.

Thanks for the fast turnaround.  I'll try it out today.

                                     -- Aaron

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