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Why CGI-style environment variables instead of HTTP headers as a hash?

April 26, 2017Environment hash headers http variables

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Why CGI-style environment variables instead of HTTP headers as a hash?

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Most existing web application frameworks already have code or a handler to run under the CGI environment. Using CGI-style hash keys instead of HTTP headers makes it trivial for the framework developers to implement an adapter to support PSGI. For instance, Catalyst::Engine::PSGI is only a few dozens lines different from Catalyst::Engine::CGI and was written in less than an hour.