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Re: [Bug-wget] Problem using GNU Wget 1.11.4 Windows version

From: Henrik Holst
Subject: Re: [Bug-wget] Problem using GNU Wget 1.11.4 Windows version
Date: Mon, 19 Mar 2012 23:22:49 +0100

Well I think that we can rule out the server because it seams to do this
the correct way.

I created an "empty" file just the size of which a signed 32-bit integer
would have troubles with:

address@hidden:~$ truncate --size 2147483648 Fedora-16-i386-DVD.iso

I then turned on capture in Wireshark and told wget to do a resume:

address@hidden:~$ wget -c "

Now looking at the HTTP request in Wireshark I can see that my version of
Wget sends the correct range in order to resume the download:

GET /fedora/releases/16/Fedora/i386/iso/Fedora-16-i386-DVD.iso HTTP/1.0
*Range: bytes=2147483648- *
User-Agent: Wget/1.12 (linux-gnu)
Accept: */*
Host: mirrors.kernel.org
Connection: Keep-Alive

And I can also see that the server does respond in a correct manner:

HTTP/1.1 206 Partial Content
Date: Mon, 19 Mar 2012 22:14:09 GMT
Server: Apache/2.2.22 (Fedora)
Last-Modified: Thu, 03 Nov 2011 03:18:38 GMT
ETag: "276805c0-e2e0b000-4b0cc0b679f80"
Accept-Ranges: bytes
*Content-Length: 1658892288
Content-Range: bytes 2147483648-3806375935/3806375936 *
Keep-Alive: timeout=5, max=1000
Connection: Keep-Alive
Content-Type: application/x-iso9660-image

That of course only takes us half-way the problem since we also must ensure
that wget fseeks to the correct position and that the server sends from the
correct position (another fseek) but that I will not try tonight since the
complete download of that file will take 6h for me and I have no time for
that at the moment :(

Of course seeing a capture of the above using the 32-bit windows version
that JD uses would be quite interesting.


2012/3/19 Micah Cowan <address@hidden>

> On 03/19/2012 01:13 PM, JD wrote:
> > I am sorry -
> > Range requests??
> > How can I see that when I run wget -c  ????
> > You're asking for info I am at a loss as to how to obtain.
> Sorry, I was slipping into potential technical explanations. You don't
> need to know what ranged requests are.
> As long as you follow the steps I outlined earlier (checking the point
> where the corruption happens, and runnin wget with the --debug flag on
> (so it gets as much information about what's going on as possible), we
> should be able to help you figure out what's going on.
> But again, first try a couple different builds of wget if you can, so we
> can eliminate the possibility that you just got your hands on a bad build.
> -mjc

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