Github user jpeach commented on the issue:
https://github.com/apache/trafficserver/pull/647
Yep. We use ``TS_MAX_HOST_NAME_LEN`` in various places, so we already have
a fixed upper limit on host names. So how about we always lowercase when
inserting, and lower case on lookup if the presented case fails? We don't need
to malloc, just use a stack temporary to do the lowercasing.
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