Re: MinGW installer cannot download a pthreads package

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From: Keith Marshall <[email protected]>
To: [email protected]
Message-ID: <298b0197-6478-9026-8b56-c7af750ecd87-JlWs9+JhQMeJPt80KsDg5Q@public.gmane.org>
Subject: Re: [MinGW-Users] MinGW installer cannot download a pthreads package
References: <20201223150506.a74a24560d02bdd8411c8c58-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
In-Reply-To: <20201223150506.a74a24560d02bdd8411c8c58-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

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Apologies for not having found the time to respond sooner.

On 23/12/2020 12:05, Anton Shepelev wrote:
> While trying to update my installation of MingGW using the
> latest and freshly re-installed mingw-get.exe, I receive an
> error message about a failed access to:
>=20
>    http://prdownloads.sourceforge.net/mingw/pthreads-GC-w32-2.10.mingw3=
2-pre-20160821-1-dll-3.tar.xz?download
>=20
> due to an error 12157.  That very file is in fact available
> in SourceForge for download via the browser ...

Well, the error code is not 404, so it isn't telling you the file
doesn't exist; it is telling you that a connection to the server has
been disallowed.

> Does the MinGW installer seek this package at the correct URL?

Yes, insofar as the SourceForge admins have promised that they will
continue to support the shortened http://prdownloads... form of URL,
(and it does still work for me, on Win7); no, because the preferred
source for this DLL should be from our OSDN.net FRS.

> If it does, then it must be unable to download it becase my Windows
> XP does not support the required network protocol.

I think I've said this before: it is becoming increasingly difficult to
continue supporting WinXP; mingw-get downloads, from SourceForge.net,
stopped working on my WinXP VM, a few *years* ago, (but they do still
seem to work on my Win7 VM).  Until recently, they *did* work, on WinXP,
when downloading from OSDN.net, but today, even that seems to no longer
work.

Obviously, there are ways and means of achieving successful downloads on
WinXP; Firefox, for example, *can* successfully download those files,
even from SourceForge.net, which mingw-get cannot.  I suspect that the
primary cause of the problem is that mingw-get depends on Microsoft's
WININET.DLL, to support HTTP/HTTPS services, and internet security has
moved on apace, since Microsoft published their last update to this DLL,
before WinXP passed end-of-life; I assume that WININET.DLL on WinXP is
no longer fit for purpose, in the modern internet world, and that
browsers, such as Firefox, use alternative technologies to support their
internet access.

Perhaps it would be possible for mingw-get to abandon WININET.DLL, in
favour of some alternative technology, to restore download capability
for older Windows versions, but unless someone steps forward, and
volunteers to develop the implementation, it will not happen ... I
simply have neither the time, nor the inclination, to do so myself.

> Is it possible, as an alternative, to upgrade MinGW from a local,
> manually downloaded repository of packages?

I think Eli has already helped to guide you to the answer for this.

--=20
Regards,
Keith.

Public key available from keys.gnupg.net
Key fingerprint: C19E C018 1547 DE50 E1D4 8F53 C0AD 36C6 347E 5A3F


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