Re: ECONNREFUSED in recvfrom ?

Chris Wedgwood (chris@cybernet.co.nz)
Tue, 13 Oct 1998 18:49:37 +1300


On Tue, Oct 13, 1998 at 01:35:29PM +0800, David Luyer wrote:

> From memory, this was one of the killers for SOCKS5 UDP under Linux - the
> socket would die with what they considered an invalid error code and
> they would ignore it, close the socket and drop all UDP packets coming back
> to that socket. And since it's not a documented error code, the SOCKS5
> people just said "it's a Linux bug" and ignored the bug report.

It's documented, rfc1122.

The broken BSD behaviour is available using setsockopt(..):

#ifdef SO_BSDCOMPAT
{
int one = 1;
setsockopt(sock_fd,SOL_SOCKET,SO_BSDCOMPAT,&one,sizeof(one));
}
#endif

> It should either be documented or not be there.

Most of the networking man pages are hopelessly out of date. I
started updating them a year or so back but got sidetracked learning
groff.

> Either libc5 and glibc documentation is broken or the kernel is
> returning an invalid error code - what does POSIX have to say?

No idea.. what POSIX says, anyone? Alan?

-cw

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