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SubjectRe: Kernel bug with UNIX sockets not detecting other end gone?

On Thu, 17 May 2001, Alan Cox wrote:

> > The following program blocks indefinitely on Linux (2.2, 2.4 not tested).
> > Since the other end is clearly gone, I would expect some sort of error
> > condition. Indeed, FreeBSD gives ECONNRESET.
> Since its a datagram socket Im not convinced thats a justifiable assumption.

Hmm - there's definitely a Linux inconsistency here. With SOCK_DGRAM,
read() is blocking but write() is giving ECONNRESET.

The ECONNRESET makes sense to me (despite this being a datagram socket),
because the sockets are anonymous. Once one end goes away, the other end
is pretty useless.


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