** Using WeBWorK **

Hi Glenn.

Yes, I have proxy: 1 in the hypnotoad section of conf/webwork2.mojolicious.yml and I am using the default conf/webwork2.apache2.4.conf file.

After my first attempt to use the content selection through Canvas I received the following message: Connect timeout at opt/webwork/webwork2/lib/WeBWorK/ContentGenerator/LTIAdvantage.pm line 326. 

I found some info about using MOJO:UserAgent that suggested that I try the following:

# Get public keyset from the LMS.

        my $ua  = Mojo::UserAgent->new;

        $ua->proxy->https('http://xa-proxy.utsarr.net:80');

        my $response = $ua->get($ce->{LTI}{v1p3}{PublicKeysetURL})->result;

        unless ($response->is_success) {

               $c->stash->{LTIAuthenError} = 'Failed to obtain public key from LMS: ' . $response->message;

        #my $response = Mojo::UserAgent->new->get($ce->{LTI}{v1p3}{PublicKeysetURL})->result;

        #unless ($response->is_success) {

        #       $c->stash->{LTIAuthenError} = 'Failed to obtain public key from LMS: ' . $response->message;

                return;

        }

This got me past the connect_timeout error and allowed me to obtain the context_id. After entering the context id in a course, I was able to see the homework sets using the Canvas external tool. When I select a set and click the button, I get an error message from Canvas with no detailed message. In the debug log, I see the same connect timeout but this time coming from SubmitGrade.pm. I tried adding the lines 

        my $ua  = Mojo::UserAgent->new;

        $ua->proxy->https('http://xa-proxy.utsarr.net:80');

but for the post_p that occurs there. After that, I do not receive the connect_timeout but instead receive in both the debug.log and webwork2.log a message that says:

WeBWorK::Authen::LTIAdvantage::SubmitGrade::warning: Failed to obtain access token from the LMS.

I have attached a text file with the output from my debug log.

Thanks!