[ww-devel] webwork-devel Digest, Vol 41, Issue 34
goehle at gmail.com
goehle at gmail.com
Thu Aug 28 20:45:01 EDT 2014
So it looks like LWP::UserAgent has changed in recent years and you can't
use the verify_hostname or the environment variable to turn off cert
checking anymore. This
http://stackoverflow.com/questions/13385846/scripts-broke-after-upgrading-lwp-certificate-verify-failed
has a new way of doing it which works for me on ubuntu.
Why don't you give the pull request another try and cross your fingers for
me.
Geoff.
On Thu, Aug 28, 2014 at 8:18 PM, <webwork-devel-request at webwork.maa.org>
wrote:
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> 1. Re: webwork-devel Digest, Vol 41, Issue 33 (goehle at gmail.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 28 Aug 2014 20:17:58 -0400
> From: "goehle at gmail.com" <goehle at gmail.com>
> To: webwork-devel <webwork-devel at webwork.maa.org>
> Subject: Re: [ww-devel] webwork-devel Digest, Vol 41, Issue 33
> Message-ID:
> <CAKJTc0nYqg2WSUjpf8L97q9vf6bcFNAbzGPkBA9WQrcSnvvG=
> w at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> What system are you using. I"m having trouble getting it to work on Ubuntu
> because Ubuntu uses a different SSL backend. (Do have a "(certificate
> verify failed)" in your error message or is it missing. If its there then
> the ssl is done using ssleay, which I havent' figured out yet.).
>
> Geoff.
>
>
> On Thu, Aug 28, 2014 at 8:14 PM, <webwork-devel-request at webwork.maa.org>
> wrote:
>
> > Send webwork-devel mailing list submissions to
> > webwork-devel at webwork.maa.org
> >
> > To subscribe or unsubscribe via the World Wide Web, visit
> > http://webwork.maa.org/mailman/listinfo/webwork-devel
> > or, via email, send a message with subject or body 'help' to
> > webwork-devel-request at webwork.maa.org
> >
> > You can reach the person managing the list at
> > webwork-devel-owner at webwork.maa.org
> >
> > When replying, please edit your Subject line so it is more specific
> > than "Re: Contents of webwork-devel digest..."
> >
> >
> > Today's Topics:
> >
> > 1. Re: The library browser not updating problem (Arnold Pizer)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Thu, 28 Aug 2014 20:14:00 -0400
> > From: Arnold Pizer <apizer at math.rochester.edu>
> > To: WeBWorK development discussion <webwork-devel at webwork.maa.org>
> > Subject: Re: [ww-devel] The library browser not updating problem
> > Message-ID:
> > <
> > CAG14sPtkBy1PYt5L0_ZdVtxtx2pUfQG8fLX+vSyxk55Vim_b-A at mail.gmail.com>
> > Content-Type: text/plain; charset="utf-8"
> >
> > Hi,
> >
> > I have tried this on (1) a system with a self signed cert but no CA but
> > with Geoff's changes and (2) a system with CA set up and the original
> > WebworlClient.pm. I haven't tried this (http not https) on (3) a new
> > install with a self signed cert but no CA and the original
> > WebworlClient.pm. Actually (3) is what I originally tried and it failed
> but
> > I assume that was with https and a redirect (but at this point I'm not
> > certain).
> >
> > Arnie
> >
> >
> > On Thu, Aug 28, 2014 at 5:57 PM, Jason Aubrey <aubreyja at gmail.com>
> wrote:
> >
> > > Hi Arnie,
> > >
> > > I'm just asking if $server_root_url = 'http://.../' works and
> > > $server_root_url = 'https://.../$ fails on a fresh install with a self
> > > signed cert but no CA.
> > >
> > > My hypothesis is that if the redirect only takes http://.../webwork2
> to
> > > https://.../webwork2, then the redirect should not affect posts to
> > http://.../mod_xmlrpc
> > > (and the library browser should work). However, if the redirect takes
> > > everything to https, then it would also take http://.../mod_xmlrpc to
> > > https://.../mod_xmlrpc and would fail with a self-signed cert and no
> ca.
> > >
> > > Jason
> > >
> > >
> > > On Thu, Aug 28, 2014 at 2:39 PM, Arnold Pizer <
> apizer at math.rochester.edu
> > >
> > > wrote:
> > >
> > >> Hi Jason,
> > >>
> > >> What precisely do you mean by "If you reverse your earlier changes"?
> > >>
> > >> Arnie
> > >>
> > >>
> > >> On Thu, Aug 28, 2014 at 5:28 PM, Jason Aubrey <aubreyja at gmail.com>
> > wrote:
> > >>
> > >>> On Thu, Aug 28, 2014 at 2:19 PM, Arnold Pizer <
> > apizer at math.rochester.edu
> > >>> > wrote:
> > >>>
> > >>>> Hi,
> > >>>>
> > >>>> Just tried Geoff's fix and it works BUT with the same weird behavior
> > >>>> as above, i.e. $server_root_url = 'https://192.168.56.101
> > >>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://192.168.56.101/&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=db5e04bee9bed8b150d2b94b055d2a919c09444a01e802ef8edbfc81e6e15b6a
> > >';
> > >>>> fails but $server_root_url = 'http://192.168.56.101
> > >>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://192.168.56.101/&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=db5e04bee9bed8b150d2b94b055d2a919c09444a01e802ef8edbfc81e6e15b6a
> > >';
> > >>>> works.
> > >>>>
> > >>>> Arnie
> > >>>>
> > >>>
> > >>> If you reverse your earlier changes do you still get this behavior or
> > do
> > >>> both fail? I ask because redirects which take
> > >>>
> > >>> http://webwork.place.edu/webwork2
> > >>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.place.edu/webwork2&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=7bfe89ad958813a64217668befb743991322daf1c49f12af14fa18f3dc4361d0
> > >
> > >>>
> > >>> to
> > >>>
> > >>> https://webwork.place.edu/webwork2
> > >>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://webwork.place.edu/webwork2&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=4cf1161bcfd2d3cfc84e64e2a1120c0cefb84617669d0d73feefba0b855b62cc
> > >
> > >>>
> > >>>
> > >>> won't redirect
> > >>>
> > >>> http://webwork.place.edu/
> > >>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.place.edu/&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=4bb3a4e71c4a044987432ff1c461bb191fb35a2c053b24f8279484938e816af0
> > >mod_xmlrpc
> > >>>
> > >>>
> > >>> to
> > >>>
> > >>> https://webwork.place.edu/mod_xmlrpc
> > >>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://webwork.place.edu/mod_xmlrpc&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=cccc7e41ef3702cd81a9fe8fe7b8988a1a7f2eea1f70d7bd75c3cd8a277c317f
> > >.
> > >>>
> > >>>
> > >>> So, I think the non-https version for $server_root_url should always
> > >>> work when we're just redirecting /webwork2 to https.
> > >>>
> > >>> Jason
> > >>>
> > >>>>
> > >>>>
> > >>>> On Thu, Aug 28, 2014 at 3:35 PM, Arnold Pizer <
> > >>>> apizer at math.rochester.edu> wrote:
> > >>>>
> > >>>>> No, I didn't see Geoff's pull request. But here is something that
> is
> > >>>>> for me VERY weird.
> > >>>>>
> > >>>>> If in site.conf I set
> > >>>>> $server_root_url = 'http://localhost
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://localhost&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=ccf67b11fc567d4fbe384e3d7600acc4a46a41ee55824e740e5240172c613da4
> > >
> > >>>>> ';
> > >>>>> or
> > >>>>> #$server_root_url = 'http://192.168.56.101
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://192.168.56.101&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=9f566001f76c1e1f1edd23300527c4d35dbe4e784e2fea2bbd43bb9486e5b8dd
> > >
> > >>>>> ';
> > >>>>> everything works.
> > >>>>>
> > >>>>> Note that I have http://192.168.56.101/webwork2/
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://192.168.56.101/webwork2/&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=01b7c80a6af29a85c644612dc6be8ece7ddc85bd1c238a0fcc7ac4e04b341fe0
> > >
> > >>>>> redirected to https://192.168.56.101/webwork2/
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://192.168.56.101/webwork2/&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=81c0db2465f149564adf30d9ce09c415dbf0e570cab8aefcb7a819b38d7c3ea3
> > >
> > >>>>> but things were working without this.
> > >>>>>
> > >>>>> Now here is the weird part. If in site.conf I set
> > >>>>> $server_root_url = 'https://localhost
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://localhost&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=a61aa6e202128e3fcb844e3b900b624b121b591a3f15aea4d8bdd668a749d2c4
> > >
> > >>>>> ';
> > >>>>> or
> > >>>>> #$server_root_url = 'https://192.168.56.101
> > >>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://192.168.56.101&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=72870a6c131f9e71e79d360f32785c6c0c979541c670c5479f3c0ba9230d8ccb
> > >
> > >>>>> ';
> > >>>>>
> > >>>>> I get the same error in the library browser I was getting before.
> > >>>>> Anybody have a clue as to what is going on?
> > >>>>>
> > >>>>> Arnie
> > >>>>>
> > >>>>>
> > >>>>> On Thu, Aug 28, 2014 at 2:50 PM, Jason Aubrey <aubreyja at gmail.com>
> > >>>>> wrote:
> > >>>>>
> > >>>>>> Also in case you didn't see it Geoff submitted a pull request
> with a
> > >>>>>> modification to WebworkClient.pm that he says fixes it;
> > >>>>>>
> > >>>>>> https://github.com/openwebwork/webwork2/pull/474
> > >>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://github.com/openwebwork/webwork2/pull/474&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=RoJw%2FW1FRudTnLiaRwnUtv3RFD0IwB0qdHV7Fhpzf14%3D%0A&s=1908770f9c191d3c7cb33de2a97b6faeb73b4258ebc689bee4b39b4af988f67d
> > >
> > >>>>>>
> > >>>>>> Jason
> > >>>>>>
> > >>>>>>
> > >>>>>> On Thu, Aug 28, 2014 at 11:45 AM, Arnold Pizer <
> > >>>>>> apizer at math.rochester.edu> wrote:
> > >>>>>>
> > >>>>>>> Hi all,
> > >>>>>>>
> > >>>>>>> I got this working by creating my own Certification Authority
> > >>>>>>> following the directions at
> > >>>>>>>
> > https://help.ubuntu.com/14.04/serverguide/certificates-and-security.html
> > >>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=https://help.ubuntu.com/14.04/serverguide/certificates-and-security.html&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=RoJw%2FW1FRudTnLiaRwnUtv3RFD0IwB0qdHV7Fhpzf14%3D%0A&s=cda5b02e866ec8f0bb4c4c8986252a3ecbe2094882470b9113cb0272bde0473a
> > >
> > >>>>>>> .
> > >>>>>>>
> > >>>>>>> I'll modify
> > >>>>>>>
> > >>>>>>>
> >
> http://webwork.maa.org/wiki/Installation_Manual_for_2.9_on_Ubuntu_14.04#Create_a_self-signed_Certificate
> > >>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/wiki/Installation_Manual_for_2.9_on_Ubuntu_14.04%23Create_a_self-signed_Certificate&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=RoJw%2FW1FRudTnLiaRwnUtv3RFD0IwB0qdHV7Fhpzf14%3D%0A&s=b77ab855af9192dc943eda36e4a53a37cd5ca2862143a64f1a77dba848492550
> > >
> > >>>>>>> accordingly. I'm not sure how much of what I did was needed.
> > >>>>>>>
> > >>>>>>> First I tried pointing SSLCACertificateFile to my original self
> > >>>>>>> signed certificate which some people say should work. It didn't
> > but I have
> > >>>>>>> read that the SSLCACertificateFile needs to be a .pem file and my
> > file was
> > >>>>>>> a .crt file. Maybe I should try generating a self signed pem
> file
> > and
> > >>>>>>> point both SSLCACertificateFile and SSLCertificateFile there.
> > >>>>>>>
> > >>>>>>> But at least I have something that works.
> > >>>>>>>
> > >>>>>>> Arnie
> > >>>>>>>
> > >>>>>>>
> > >>>>>>> On Wed, Aug 27, 2014 at 5:53 PM, John Jones <jj at asu.edu> wrote:
> > >>>>>>>
> > >>>>>>>> I the problem arises from the ajax call, which is generated by
> > >>>>>>>> jquery. I think the configuration change has to either be done
> > when we
> > >>>>>>>> send the request (so in jquery's $.post command) or in the
> > receiver, which
> > >>>>>>>> is apache.
> > >>>>>>>>
> > >>>>>>>> John
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>> On Wed, Aug 27, 2014 at 12:33 PM, Arnold Pizer <
> > >>>>>>>> apizer at math.rochester.edu> wrote:
> > >>>>>>>>
> > >>>>>>>>> Hi Jason,
> > >>>>>>>>>
> > >>>>>>>>> No, I still get the same error. I also tried setting in
> > >>>>>>>>> webwork.apache2.4-conf
> > >>>>>>>>> PerlSetEnv PERL_LWP_SSL_VERIFY_HOSTNAME 0
> > >>>>>>>>> and a few similar things all to no avail.
> > >>>>>>>>>
> > >>>>>>>>> Arnie
> > >>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>> On Wed, Aug 27, 2014 at 2:45 PM, Jason Aubrey <
> > aubreyja at gmail.com>
> > >>>>>>>>> wrote:
> > >>>>>>>>>
> > >>>>>>>>>> Arnie,
> > >>>>>>>>>>
> > >>>>>>>>>> We think might have a general solution, and you might be in
> the
> > >>>>>>>>>> best position to test it. In line 143 of WebworkClient.pm
> could
> > you put
> > >>>>>>>>>>
> > >>>>>>>>>> ssl_opts => { verify_hostname => 0 }
> > >>>>>>>>>>
> > >>>>>>>>>> inside the ->proxy() bit. So I think it should look like
> > >>>>>>>>>>
> > >>>>>>>>>> -> proxy(($self->url).'/'.REQUEST_URI,ssl_opts => {
> > >>>>>>>>>> verify_hostname => 0 } );
> > >>>>>>>>>>
> > >>>>>>>>>> The ssl_opts should get passed to LWP::UserAgent and maybe
> > >>>>>>>>>> disable the hostname verification for the web service calls.
> > >>>>>>>>>>
> > >>>>>>>>>> Jason
> > >>>>>>>>>>
> > >>>>>>>>>>
> > >>>>>>>>>> On Wed, Aug 27, 2014 at 11:34 AM, Arnold Pizer <
> > >>>>>>>>>> apizer at math.rochester.edu> wrote:
> > >>>>>>>>>>
> > >>>>>>>>>>> Thanks. After sending the email, I realized that the problem
> > >>>>>>>>>>> wasn't with the browser but figured someone with a deeper
> > understanding
> > >>>>>>>>>>> would respond.
> > >>>>>>>>>>>
> > >>>>>>>>>>> When we figure this out, it would be good if we could make a
> > >>>>>>>>>>> configuration option that (1) disables hostname verification
> > or
> > >>>>>>>>>>> (2) does something else to make this problem easier to solve.
> > >>>>>>>>>>>
> > >>>>>>>>>>> Arnie
> > >>>>>>>>>>>
> > >>>>>>>>>>>
> > >>>>>>>>>>> On Wed, Aug 27, 2014 at 2:19 PM, Jason Aubrey <
> > >>>>>>>>>>> aubreyja at gmail.com> wrote:
> > >>>>>>>>>>>
> > >>>>>>>>>>>> I'll need to track down who really needs the cert, but in
> this
> > >>>>>>>>>>>> case it's not the browser. I *think* it's LWP::UserAgent
> via
> > >>>>>>>>>>>> LWP::Protocol::https. You can see here
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> >
> http://search.cpan.org/~mschilli/LWP-Protocol-https-6.06/lib/LWP/Protocol/https.pm
> > >>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://search.cpan.org/~mschilli/LWP-Protocol-https-6.06/lib/LWP/Protocol/https.pm&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=qcv1sUmY2mmPdAagwB7DjEHK%2FmPDlw6Qt7YtABKv6do%3D%0A&s=694e0ff4bb49d7042a44336317f7c7cc829d5d813697e43c845370e10f27db8d
> > >
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> It's description of how ssl requests can fail (which sounds
> > >>>>>>>>>>>> like how ours are failing.) So, the deeper solution might
> be
> > to fix it
> > >>>>>>>>>>>> here by disabling the check:
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> If hostname verification is requested by LWP::UserAgent's
> > >>>>>>>>>>>>> ssl_opts, and neither SSL_ca_file nor SSL_ca_path is set,
> > >>>>>>>>>>>>> then SSL_ca_file is implied to be the one provided by
> > >>>>>>>>>>>>> Mozilla::CA. If the Mozilla::CA module isn't available SSL
> > requests will
> > >>>>>>>>>>>>> fail. Either install this module, set up an alternative
> > >>>>>>>>>>>>> SSL_ca_file or disable hostname verification
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> That's if I'm right about who is complaining.
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> Jason
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> On Wed, Aug 27, 2014 at 11:08 AM, Arnold Pizer <
> > >>>>>>>>>>>> apizer at math.rochester.edu> wrote:
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>> Hi John et all,
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> I'm pretty sure I'm having the same problem. When I look
> at
> > >>>>>>>>>>>>> things following Matt's suggestion, I see that the last
> > module called is instructorXMLHandler.pm
> > >>>>>>>>>>>>> and I see the error msg
> > >>>>>>>>>>>>> Errors: 500 Can't connect to 192.168.56.101:443
> > >>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://192.168.56.101:443&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=qcv1sUmY2mmPdAagwB7DjEHK%2FmPDlw6Qt7YtABKv6do%3D%0A&s=e09084ada64c076fd5495663842d43b8ab6e007ddf6f5804a79eb17d6621ab9a
> > >
> > >>>>>>>>>>>>> (certificate verify failed) at
> > /opt/webwork/webwork2/lib/WebworkClient.pm
> > >>>>>>>>>>>>> line 158. End Errors
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> My problem is that I'm using a selfsigned certificate for
> > >>>>>>>>>>>>> testing. So I don't think creating a self signed SSLCA
> > certificate alone
> > >>>>>>>>>>>>> will solve the problem. I think I should be able to get
> the
> > browser to
> > >>>>>>>>>>>>> trust the certificate and if this works it will be OK as
> > long as only
> > >>>>>>>>>>>>> instructors have this problem. Are there any things that
> > students do (or
> > >>>>>>>>>>>>> will do) that will bring up similar problems? If so, the
> > option of using
> > >>>>>>>>>>>>> self signed certificates will have to be abandoned.
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> If anyone has gotten a browser to trust a self signed
> > >>>>>>>>>>>>> certificate or can point me to a good reference, I would
> > appreciate the
> > >>>>>>>>>>>>> hint. There seem to be quite a few references, but I
> > haven't found one
> > >>>>>>>>>>>>> that works yet. At least now I know the problem is really
> > with the SSL
> > >>>>>>>>>>>>> certificate.
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> Arnie
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> On Wed, Aug 27, 2014 at 11:50 AM, John Jones <jj at asu.edu>
> > >>>>>>>>>>>>> wrote:
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>>> Can someone write a version of this explanation a la an
> > >>>>>>>>>>>>>> apache for dummies?
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>> Arnie, can you check to see if this fixes the problem you
> > >>>>>>>>>>>>>> encountered during mathfest?
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>> John
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>> On Wed, Aug 27, 2014 at 8:40 AM, Jason Aubrey <
> > >>>>>>>>>>>>>> aubreyja at gmail.com> wrote:
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>> Thanks Matt - that worked!
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>> Jason
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>> On Tue, Aug 26, 2014 at 4:56 PM, Matt Haught <
> > >>>>>>>>>>>>>>> matt_haught at ncsu.edu> wrote:
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>> Same problem here on our devel server but not our
> > >>>>>>>>>>>>>>>> production. I have
> > >>>>>>>>>>>>>>>> been scratching my head with it today. Our devel server
> > >>>>>>>>>>>>>>>> also uses the
> > >>>>>>>>>>>>>>>> incommon certs while the production is using godaddy
> from
> > >>>>>>>>>>>>>>>> before we
> > >>>>>>>>>>>>>>>> could get incommon. So that got me thinking... I have
> > >>>>>>>>>>>>>>>> something for
> > >>>>>>>>>>>>>>>> you to try that appears to have worked for us.
> > >>>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>> Add a SSLCACertificateFile apache conf line and have it
> > use
> > >>>>>>>>>>>>>>>> the
> > >>>>>>>>>>>>>>>> intermediate/root only cert (2nd link down in the
> InCommon
> > >>>>>>>>>>>>>>>> email)
> > >>>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>> Matt Haught
> > >>>>>>>>>>>>>>>> North Carolina State University
> > >>>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>> On Tue, Aug 26, 2014 at 5:49 PM, Jason Aubrey <
> > >>>>>>>>>>>>>>>> aubreyja at gmail.com> wrote:
> > >>>>>>>>>>>>>>>> > Well, at this point I think the error has something to
> > do
> > >>>>>>>>>>>>>>>> with how my ssl is
> > >>>>>>>>>>>>>>>> > configured. Here is some evidence from my apache log
> > >>>>>>>>>>>>>>>> with LogLevel info:
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> > There were a lot of errors: 500 Can't connect to
> > >>>>>>>>>>>>>>>> > webwork.math.arizona.edu:443
> > >>>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.math.arizona.edu:443&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=659704ee979814c39994ceb4ce07d99d6c2c6560c6cac50cdf09c2cb8a72a7bf
> > >
> > >>>>>>>>>>>>>>>> at /opt/webwork/webwork2/lib/WebworkClient.pm
> > >>>>>>>>>>>>>>>> > line 158
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> > [Tue Aug 26 14:35:13 2014] [info] [client 127.0.0.1]
> SSL
> > >>>>>>>>>>>>>>>> library error 1 in
> > >>>>>>>>>>>>>>>> > handshake (server webwork.math.arizona.edu:443
> > >>>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.math.arizona.edu:443&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=659704ee979814c39994ceb4ce07d99d6c2c6560c6cac50cdf09c2cb8a72a7bf
> > >
> > >>>>>>>>>>>>>>>> )
> > >>>>>>>>>>>>>>>> > [Tue Aug 26 14:35:13 2014] [info] SSL Library Error:
> > >>>>>>>>>>>>>>>> 336151576
> > >>>>>>>>>>>>>>>> > error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1
> alert
> > >>>>>>>>>>>>>>>> unknown ca
> > >>>>>>>>>>>>>>>> > [Tue Aug 26 14:35:13 2014] [info] [client 127.0.0.1]
> > >>>>>>>>>>>>>>>> Connection closed to
> > >>>>>>>>>>>>>>>> > child 0 with abortive shutdown (server
> > >>>>>>>>>>>>>>>> webwork.math.arizona.edu:443
> > >>>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.math.arizona.edu:443&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=659704ee979814c39994ceb4ce07d99d6c2c6560c6cac50cdf09c2cb8a72a7bf
> > >
> > >>>>>>>>>>>>>>>> )
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> > So, you can see (1) that 'it' can't connect to
> > >>>>>>>>>>>>>>>> webwork.math.arizona.edu:443
> > >>>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.math.arizona.edu:443&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=659704ee979814c39994ceb4ce07d99d6c2c6560c6cac50cdf09c2cb8a72a7bf
> > >
> > >>>>>>>>>>>>>>>> > and (2) the ssl handshake seems to be dying due to an
> > >>>>>>>>>>>>>>>> unknown certificate
> > >>>>>>>>>>>>>>>> > authority. But if you looked at my server, you would
> > see
> > >>>>>>>>>>>>>>>> (3) that my
> > >>>>>>>>>>>>>>>> > certificate authority is in fact well known:
> > >>>>>>>>>>>>>>>> >>
> > >>>>>>>>>>>>>>>> >> Issued By
> > >>>>>>>>>>>>>>>> >>
> > >>>>>>>>>>>>>>>> >> Common Name (CN) InCommon Server CA
> > >>>>>>>>>>>>>>>> >>
> > >>>>>>>>>>>>>>>> >> Organizaton (O) Internet2
> > >>>>>>>>>>>>>>>> >>
> > >>>>>>>>>>>>>>>> >> etc...
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> > Also, there is the fact that (4) my web browsers have
> no
> > >>>>>>>>>>>>>>>> problem connecting
> > >>>>>>>>>>>>>>>> > to the https site.
> > >>>>>>>>>>>>>>>> > So,
> > >>>>>>>>>>>>>>>> > (a) Maybe the perl module(s) running the webservice
> > calls
> > >>>>>>>>>>>>>>>> (LWP?) don't
> > >>>>>>>>>>>>>>>> > recognize the certificate authority.
> > >>>>>>>>>>>>>>>> > (b) Maybe the way my redirect to ssl is set up is
> > messing
> > >>>>>>>>>>>>>>>> with the web
> > >>>>>>>>>>>>>>>> > service calls. (Permanent redirect to a *:443 vhost)
> > >>>>>>>>>>>>>>>> > (c) Maybe there is some other configuration problem
> with
> > >>>>>>>>>>>>>>>> my ssl set up.
> > >>>>>>>>>>>>>>>> > (d) Maybe this is completely unrelated to the actual
> > >>>>>>>>>>>>>>>> problem.
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> > Thanks for any ideas.
> > >>>>>>>>>>>>>>>> > Jason
> > >>>>>>>>>>>>>>>> >
> > >>>>>>>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=f02b3d4aa31c9f5bdb0b9e2da8bbe66c3f5c55044c9d192f6f36541793737fbd
> > >
> > >>>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=f02b3d4aa31c9f5bdb0b9e2da8bbe66c3f5c55044c9d192f6f36541793737fbd
> > >
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=hIi8Y6c%2BF6urweTkKtsDeHM2YeEf66fH%2BdSLpZNJEOE%3D%0A&s=f02b3d4aa31c9f5bdb0b9e2da8bbe66c3f5c55044c9d192f6f36541793737fbd
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>>
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> --
> > >>>>>>>>>>>>> Prof. Arnold K. Pizer
> > >>>>>>>>>>>>> Dept. of Mathematics
> > >>>>>>>>>>>>> University of Rochester
> > >>>>>>>>>>>>> Rochester, NY 14627
> > >>>>>>>>>>>>> (585) 766-8812
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=qcv1sUmY2mmPdAagwB7DjEHK%2FmPDlw6Qt7YtABKv6do%3D%0A&s=9c972ecbed0fdbb30c086953ea4315f9ae5d19e9d5bba619d57c28a460e32459
> > >
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=qcv1sUmY2mmPdAagwB7DjEHK%2FmPDlw6Qt7YtABKv6do%3D%0A&s=9c972ecbed0fdbb30c086953ea4315f9ae5d19e9d5bba619d57c28a460e32459
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>
> > >>>>>>>>>>>
> > >>>>>>>>>>> --
> > >>>>>>>>>>> Prof. Arnold K. Pizer
> > >>>>>>>>>>> Dept. of Mathematics
> > >>>>>>>>>>> University of Rochester
> > >>>>>>>>>>> Rochester, NY 14627
> > >>>>>>>>>>> (585) 766-8812
> > >>>>>>>>>>>
> > >>>>>>>>>>> _______________________________________________
> > >>>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=KO2RS6ixedrUyvT4arnoHWxFGWY%2BKXWHdd258XPl4sA%3D%0A&s=9fe3159f2d9a66ce99574df5e5079e1082892345249a223a33d5f01b48a2345d
> > >
> > >>>>>>>>>>>
> > >>>>>>>>>>>
> > >>>>>>>>>>
> > >>>>>>>>>> _______________________________________________
> > >>>>>>>>>> webwork-devel mailing list
> > >>>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>>>
> > >>>>>>>>>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=KO2RS6ixedrUyvT4arnoHWxFGWY%2BKXWHdd258XPl4sA%3D%0A&s=9fe3159f2d9a66ce99574df5e5079e1082892345249a223a33d5f01b48a2345d
> > >>>>>>>>>>
> > >>>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>> --
> > >>>>>>>>> Prof. Arnold K. Pizer
> > >>>>>>>>> Dept. of Mathematics
> > >>>>>>>>> University of Rochester
> > >>>>>>>>> Rochester, NY 14627
> > >>>>>>>>> (585) 766-8812
> > >>>>>>>>>
> > >>>>>>>>> _______________________________________________
> > >>>>>>>>> webwork-devel mailing list
> > >>>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=sPqxTKzP%2BXUkKQzphH%2B0Vf%2BHx8y0AjIPpgR8Sic8eSY%3D%0A&s=94c62b5b43b030e6c4d27f9579ee92b47860f672b55a1385bba5bc7384c68d1c
> > >
> > >>>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>
> > >>>>>>>> _______________________________________________
> > >>>>>>>> webwork-devel mailing list
> > >>>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>>>
> > >>>>>>>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=sPqxTKzP%2BXUkKQzphH%2B0Vf%2BHx8y0AjIPpgR8Sic8eSY%3D%0A&s=94c62b5b43b030e6c4d27f9579ee92b47860f672b55a1385bba5bc7384c68d1c
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>
> > >>>>>>>
> > >>>>>>> --
> > >>>>>>> Prof. Arnold K. Pizer
> > >>>>>>> Dept. of Mathematics
> > >>>>>>> University of Rochester
> > >>>>>>> Rochester, NY 14627
> > >>>>>>> (585) 766-8812
> > >>>>>>>
> > >>>>>>> _______________________________________________
> > >>>>>>> webwork-devel mailing list
> > >>>>>>> webwork-devel at webwork.maa.org
> > >>>>>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>>>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=RoJw%2FW1FRudTnLiaRwnUtv3RFD0IwB0qdHV7Fhpzf14%3D%0A&s=8e712d8e68ae1cd810da77d37023b5cfa9d019748004c8e6168a725b1b26726e
> > >
> > >>>>>>>
> > >>>>>>>
> > >>>>>>
> > >>>>>> _______________________________________________
> > >>>>>> webwork-devel mailing list
> > >>>>>> webwork-devel at webwork.maa.org
> > >>>>>>
> > >>>>>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=RoJw%2FW1FRudTnLiaRwnUtv3RFD0IwB0qdHV7Fhpzf14%3D%0A&s=8e712d8e68ae1cd810da77d37023b5cfa9d019748004c8e6168a725b1b26726e
> > >>>>>>
> > >>>>>>
> > >>>>>
> > >>>>>
> > >>>>> --
> > >>>>> Prof. Arnold K. Pizer
> > >>>>> Dept. of Mathematics
> > >>>>> University of Rochester
> > >>>>> Rochester, NY 14627
> > >>>>> (585) 766-8812
> > >>>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>> --
> > >>>> Prof. Arnold K. Pizer
> > >>>> Dept. of Mathematics
> > >>>> University of Rochester
> > >>>> Rochester, NY 14627
> > >>>> (585) 766-8812
> > >>>>
> > >>>> _______________________________________________
> > >>>> webwork-devel mailing list
> > >>>> webwork-devel at webwork.maa.org
> > >>>> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >>>> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=88d694a9e287b84f6a5e6945ea2ac576f8c0f380828ce2104999765a4370a83a
> > >
> > >>>>
> > >>>>
> > >>>
> > >>> _______________________________________________
> > >>> webwork-devel mailing list
> > >>> webwork-devel at webwork.maa.org
> > >>>
> > >>>
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=uXpSd5MBreIZyU%2FypnzZ2yCoFfhVMWU%2BOUSy6sOlPD8%3D%0A&s=88d694a9e287b84f6a5e6945ea2ac576f8c0f380828ce2104999765a4370a83a
> > >>>
> > >>>
> > >>
> > >>
> > >> --
> > >> Prof. Arnold K. Pizer
> > >> Dept. of Mathematics
> > >> University of Rochester
> > >> Rochester, NY 14627
> > >> (585) 766-8812
> > >>
> > >> _______________________________________________
> > >> webwork-devel mailing list
> > >> webwork-devel at webwork.maa.org
> > >> http://webwork.maa.org/mailman/listinfo/webwork-devel
> > >> <
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=4EzWBikTpV5DQii%2BLk%2FAz7TE936PV1WMhfm%2BAWBB3sQ%3D%0A&s=4a3ca76326f221457ac78da469e049af832eebe5a690e2cdce30bd59a04090de
> > >
> > >>
> > >>
> > >
> > > _______________________________________________
> > > webwork-devel mailing list
> > > webwork-devel at webwork.maa.org
> > >
> > >
> >
> https://urldefense.proofpoint.com/v1/url?u=http://webwork.maa.org/mailman/listinfo/webwork-devel&k=p4Ly7qpEBiYPBVenR9G2iQ%3D%3D%0A&r=g5j9%2FzBITNFXnOqzhQf%2B0b%2F2j5jSmy74eqJk2rpyoc4%3D%0A&m=4EzWBikTpV5DQii%2BLk%2FAz7TE936PV1WMhfm%2BAWBB3sQ%3D%0A&s=4a3ca76326f221457ac78da469e049af832eebe5a690e2cdce30bd59a04090de
> > >
> > >
> >
> >
> > --
> > Prof. Arnold K. Pizer
> > Dept. of Mathematics
> > University of Rochester
> > Rochester, NY 14627
> > (585) 766-8812
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> > End of webwork-devel Digest, Vol 41, Issue 33
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