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Date: Fri, 14 Sep 2012 16:27:17 +0200
From: =?UTF-8?B?SsOpcsOpbWll?= Dimino <jeremie@dimino.org>
To: Romain Bardou <romain.bardou@inria.fr>
Cc: caml-list@inria.fr
Message-ID: <20120914162717.0527b04b@arrakis>
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References: <505336D4.7010700@inria.fr>
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Subject: Re: [Caml-list] Unix.connect for non-blocking sockets on Windows

Hi,

Le Fri, 14 Sep 2012 15:53:24 +0200,
Romain Bardou <romain.bardou@inria.fr> a =C3=A9crit :

>    open Unix
>    let address =3D "xxx.xxx.xxx.xxx" in (* some IP for IPv4 *)
>    let port =3D 9543 in
>    let fd =3D socket PF_INET SOCK_STREAM 0 in
>    set_nonblock fd;
>    connect fd (ADDR_INET (Unix.inet_addr_of_string address, port))

If the socket is in non-blocking mode and connect blocks, then you get
a Unix.EWOULDBLOCK error. According to the MSDN documentation, if
connect fails with EWOULDBLOCK, you have to wait for the socket to
become writeable then call connect again which will fail with EISCONN
if the connection succeeded.

--=20
J=C3=A9r=C3=A9mie