Fix for assessment downloads over HTTP/2.0 #30
Merged
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Currently, assessment downloads do not work on AWS Autolab.
This is because the code checks for "Content-Disposition:" to determine if the file is downloadable.
While the header is usually spelt like that with HTTP/1.1, in HTTP/2.0 header names are converted to lowercase prior to encoding (https://stackoverflow.com/questions/5258977/are-http-headers-case-sensitive)
Local Autolab
AWS Autolab
This PR fixes this by also checking the lowercase version of content-disposition. A more complete solution might be to transform the entire header to lowercase before checking, but that seems unnecessary.