[Caml-list] Unix.connect for non-blocking sockets on Windows

[Romain Bardou <romain.bardou@inria.fr>]

Hello,

It seems, from the manual[1] that sockets of the Unix module are fully 
implemented on Windows. It also seems, from other googling, that 
non-blocking sockets are also implemented.

[1] http://caml.inria.fr/pub/docs/manual-ocaml/manual036.html

However, when I run the Unix.connect command on Windows, I get:

   Unix_error(EWOULDBLOCK, "connect", "")

I'm using OCaml 3.12.1 on Windows using the (older) installer from 
Jonathan, which uses mingw if I'm not mistaken. The code I use is more 
or less equivalent to:

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

Is this a known issue?

Thanks,

-- 
Romain Bardou