Re: How to notice abrupt tcp connection losses in server/client?

[Chris Vine]

On Fri, 22 Jun 2018 09:27:30 +0300
Eli Zaretskii <address@hidden> wrote:
> > Date: Fri, 22 Jun 2018 00:09:16 +0100
> > From: Chris Vine <address@hidden>
> > 
> > I think you will need to use recv! with windows, because you cannot
> > read from sockets in windows using POSIX read().
> 
> What makes you say that?  It isn't true; Gawk does that on Windows,
> and it works very well.  The only two issues, which are easy to
> overcome with wrappers or macros, are:
> 
>   . you need to create the socket with 'WSASocket; rather than
>     'socket', since the latter creates overlapped sockets that cannot
>     be used with file I/O APIs;
>   . you need to convert the SOCKET type (which is a handle in
>     disguise) into a file descriptor and back using a pair of library
>     functions
> 
> Perhaps Guile doesn't yet do that (I didn't look, it could be in
> Gnulib functions), but it would be easy to add if so.

OK, my misunderstanding then.  Looking at the wrappers for windows
sockets (lib/socket.c) it looks as if it may work - since you use
windows and I don't, why not try it and tell us?