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Re: Problems with the url package on w32?
From: |
Kim F. Storm |
Subject: |
Re: Problems with the url package on w32? |
Date: |
Mon, 04 Dec 2006 09:55:02 +0100 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.91 (gnu/linux) |
Richard Stallman <address@hidden> writes:
> > > 1. Make non-blocking connections work on Windows.
> > > 2. Make (featurep 'make-network-process '(:nowait t)) return nil
> on
> > > Windows.
> > > 3. Document that make-network-process returns nil if it fails to
> > > create a non-blocking socket.
> > > 4. Make make-network-socket do a blocking connect if a
> non-blocking
> > > connect fails, and document that.
> >
> > Why not make it signal an error if it can't do what was requested?
>
> Hm... that might work. IMO it should be easy for a program to find
> out what happened (non-blocking connect doesn't work in this case), so
> it can perform a certain remedy (doing a blocking connect instead). A
> specific error "nowait-not-supported" could be the solution.
>
> Does anyone argue against this?
I just did!
I would like someone to investigate why the non-blocking connect
doesn't work, before deciding what to do.
Does if fail before calling connect (e.g. when setting the socket to
non-blocking), does it fail in the connect itself (what error code is
returned in that case), or does it fail because the emulated select on
w32 doesn't handle non-blocking connect well (it relies on the
write-descriptors).
Maybe a local non-blocking connect (127.0.0.1) succeeds because it
is actually handled as a blocking connect, and returns immediately,
whereas a non-local non-blocking connect fails because the select
system call doesn't work??
If this is the case, windoze doesn't support non-blocking connects,
so (featurep 'make-network-process '(:nowait t)) should return nil.
Perhaps the doc-string for make-network-process should mention using
featurep to check for sub-features.
--
Kim F. Storm <address@hidden> http://www.cua.dk
- Re: Problems with the url package on w32?, (continued)
- Re: Problems with the url package on w32?, Lennart Borgman, 2006/12/21
- Re: Problems with the url package on w32?, Stefan Monnier, 2006/12/22
- Re: Problems with the url package on w32?, Lennart Borgman, 2006/12/22
- Re: Problems with the url package on w32?, Lennart Borgman, 2006/12/20
- Re: Problems with the url package on w32?, Lennart Borgman, 2006/12/21
- Re: Problems with the url package on w32?, Richard Stallman, 2006/12/04
- Re: Problems with the url package on w32?,
Kim F. Storm <=
- Re: Problems with the url package on w32?, Richard Stallman, 2006/12/04
Re: Problems with the url package on w32?, LENNART BORGMAN, 2006/12/20