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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.lang.ada
Subject: Re: Gnat.Sockets and non-blocking connects
Date: Sun, 29 Jun 2003 16:29:15 +0200
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Samuel Tardieu <sam@rfc1149.net> writes:

>>>>>> "Florian" == Florian Weimer <fw@deneb.enyo.de> writes:
>
> Florian> Errors are reported by the R/W selectors.  However,
> Florian> nonblocking connect error reporting is not portable, see
> Florian> Steven's UNIX Network Programming.
>
> In practice, it *is* portable.

The SO_ERROR socket option is implemented in two different ways.

> Jano, you need to check the write set,

Correct.

> and try to connect again. You will get an error. If the error is
> EISCONN, you *are* connected. If this is anything else, you
> *aren't*.

Unfortunately, you don't get the error code in this case.