elasticsearch/logstash-forwarder — pull request #261 by matthughes (2014-09-02 16:19:17+00:00)
Title: Supports multiple certificates in CA chain.

The current CA code only supports a single certificate in the CA.pem file. Many certificate authorities are in a chain, where you might have a Root CA and a Sub CA. The Sub CA signs your certificate, but you need to trust the whole chain.