yesodweb/wai — pull request #115 by tsuraan (2012-10-02 17:55:15+00:00)
Title: Preserve Certificate Chains

warp-tls currently just uses the first certificate in a certificate file, but many providers give both a primary certificate and a chain of certs that you have to serve alongside it. This change makes warp-tls serve the entire certificate chain instead of throwing it away.

I'm not sure what Keter is, but I saw a similar change go into that. It seemed like the right thing to do here.