Failed non-blocking connect returns incorrect errno on AF_UNIX protocol

[David Huang]

Failed non-blocking connect returns incorrect errno on AF_UNIX protocol.
See attached test program.

On cygwin:
$ ./afunix
EINPROGRESS: Operation now in progress

On
Linux 2.4 (Debian 2.2)
Linux 2.4 (Redhat 7.3)
Sun Solaris (8):
$ ./afunix
ECONNREFUSED: Connection refused

When i comment following code:
//	if (fcntl (fd2, F_SETFL, O_NONBLOCK) < 0)
//		printf ("Failed to set fd non-blocking");
The result is
ECONNREFUSED: Connection refused

It seems an old bug.
I don't know whether it effect others address/protocol families.


Thanks.

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