DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 51PMJ2kK4017925
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org E8B723858D29
MIME-Version: 1.0
References: <CALXu0UdHbasuyBiVZveyvJ1+K168QKBu0wn_cEVG8z+zfqQQeg@mail.gmail.com>
 <CAPJSo4XR+vG=RLrOwdo=TsVhLj+qRhDdu0CFrnDZn4Z0oSoqhQ@mail.gmail.com>
 <Z7dgP35hc_jd_dK7@calimero.vinschen.de>
 <CAPJSo4WrUzuGyTzz=Pp8oPnnbcawLNGZBb5dCE67AazVh8B2bA@mail.gmail.com>
 <Z7eSVamMjrs5XsBm@calimero.vinschen.de>
 <CANH4o6NW7NnygLoRgWmMMV7qY4UwK6vKnVKCRX2u=9MCWhdMdg@mail.gmail.com>
 <Z7hVWK1_pzYrIzBG@calimero.vinschen.de>
 <CALWcw=E4kcJ+UbsRkqkFpgRx734H33NhJhspuVH2KgDzV4jL3g@mail.gmail.com>
 <Z7my7gejHoLjf2F1@calimero.vinschen.de>
 <CALWcw=EqzTv-J5pm1DVT8Un+J2QWLtV70nF1nU9DO_P3Cg4OOg@mail.gmail.com>
 <CALWcw=GDQ0kPGXBXMa3-9LdFX3fjsVdUK-VS1TpwdO_XtFvXMA@mail.gmail.com>
In-Reply-To: <CALWcw=GDQ0kPGXBXMa3-9LdFX3fjsVdUK-VS1TpwdO_XtFvXMA@mail.gmail.com>
Date: Tue, 25 Feb 2025 23:18:00 +0100
Message-ID: <CALXu0UcjiJt4=MnuCWb_97FY9NVMM6Ak-5a87H2uR7qO+50Gzg@mail.gmail.com>
Subject: Re: Document support for @ character in UNC paths
To: cygwin@cygwin.com
From: Cedric Blancher via Cygwin <cygwin@cygwin.com>
Reply-To: Cedric Blancher <cedric.blancher@gmail.com>
Content-Type: text/plain; charset="utf-8"
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie.com@cygwin.com>
Content-Transfer-Encoding: 8bit

On Tue, 25 Feb 2025 at 17:00, Takeshi Nishimura via Cygwin
<cygwin@cygwin.com> wrote:
>
> Subject says it all, please document that @ characters in UNC paths
> are now supported, for WebDAV and BeeGFS
>

WebDAV and BeeGFS are not alone, the Windows ms-nfs41-client and
ms-nfs42-client ALWAYS (even with default NFSv4.1 port TCP/2049) use
UNC paths with "@" character, like
\\stripe02.zebracluster.intra.pasteur.fr@2049\nfs4\disk02\
OpenText NFSv4.0 client also supports that, but only if you not use
the default NFSv4.0 TCP port.

So it's pretty common in UNC paths to have one @ (for port) or more @
(for other options like WebDAV's @SSL) in the UNC paths.

So yes, please, Cygwin should document this as a supported configuration.

Ced


> ---------- Forwarded message ---------
> From: Takeshi Nishimura <takeshi.nishimura.linux@gmail.com>
> Date: Tue, Feb 25, 2025 at 4:58 PM
> Subject: Re: UNC path for WebDAV with cd '\\webdavsrv@SSL\path' or cd
> '\\webdavsrv@23456\path' will not work
> To: <cygwin@cygwin.com>
>
>
> On Sat, Feb 22, 2025 at 12:20 PM Corinna Vinschen via Cygwin
> <cygwin@cygwin.com> wrote:
> >
> > On Feb 21 22:04, Takeshi Nishimura via Cygwin wrote:
> > > On Fri, Feb 21, 2025 at 11:28 AM Corinna Vinschen via Cygwin
> > > <cygwin@cygwin.com> wrote:
> > > >
> > > > On Feb 20 23:36, Martin Wege via Cygwin wrote:
> > > > > On Thu, Feb 20, 2025 at 9:37 PM Corinna Vinschen via Cygwin
> > > > > > And here's the problem.  It works fine for me on all shares, be it SMB,
> > > > > > Samba, or NFS:
> > > > > >
> > > > > > https://cygwin.com/pipermail/cygwin/2025-February/257438.html
> > > > > >
> > > > > > > Maybe the hostname resolution in fhandler_netdrive::exists() failed?
> > > > > >
> > > > > > If so, it would be a problem on your side.
> > > > > > Does `nslookup ember.data4.local' return a valid address?
> > > > > >
> > > > > > I just pushed a patch to print a debug statement in strace output
> > > > > > to see what error code GetAddrInfoW returned.
> > > > >
> > > > > The code in https://cygwin.com/git/?p=newlib-cygwin.git;a=commitdiff;h=df307349a09e6f1ba75c78b1427dcea40f435e6e;hp=8a8fb570d7c5310a03a34b3dd6f9f8bb35ee9f40
> > > > > is not going to work, because you only give ret as argument, but not
> > > > > "name+2" as hostname.
> > > >
> > > > Yeah, it was obviously too late yesterday.  The patch was wrong twice.
> > > >
> > > > I pushed a patch for the patch which should show up in the just
> > > > building cygwin-3.6.0-0.381.g8cc55d819bb7 test release.
> > > >
> > > > > And speaking of the "hostname", is this the \\hostname\path of an UNC?
> > > > > In that case this will not work with WebDAV/SSL or WebDAV with custom
> > > > > port, which might be \\webdavserver@SSL\path or
> > > > > \\webdavserver@23456\path, or \\webdavserver@SSL@23456\path
> > > > > You need to replace the L'@' with L'\0' before calling GetAddrInfoW(),
> > > > > or it is not going to work with WebDAV
> > > >
> > > > I never saw that before.  Is that syntax really usable?
> > > >
> > > > I just spent half an hour trying to connect to a nextcloud instance
> > > > using this syntax, but to no avail.  https://... works.
> > > >
> > > > I have a local patch removing this at-sign, but I would first like
> > > > to hear if this is really usable and used.
> > >
> > > The BeeGFS Windows client uses that syntax to support more than one
> > > metadata server config per host, i.e.
> > > \\beegfs.example.com@14\beegfs\dir1\dir2....
> >
> > Oh, cool.  Can you check the latest Cygwin test release if it works
> > better with BeeGFS?
>
> https://cygwin.com/git/?p=newlib-cygwin.git;a=commit;h=4bcc6adec765ee8354bfc9e6c060c9d1c0c7bf46
> works with BeeGFS, with @ in the UNC path
> --
> Internationalization&localization dev / 大阪大学
> Takeshi Nishimura <takeshi.nishimura.linux@gmail.com>
>
>
> --
> Internationalization&localization dev / 大阪大学
> Takeshi Nishimura <takeshi.nishimura.linux@gmail.com>
>
> --
> Problem reports:      https://cygwin.com/problems.html
> FAQ:                  https://cygwin.com/faq/
> Documentation:        https://cygwin.com/docs.html
> Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple


--
Cedric Blancher <cedric.blancher@gmail.com>
[https://plus.google.com/u/0/+CedricBlancher/]
Institute Pasteur

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple