tree 3e1f6fda1058b7ccf1666cea922c9d11adcea854
parent f3b5bf53ce10aed1cf288098af846095bf5f5233
author Matt T. Proud <matt.proud@gmail.com> 1494016270 +0200
committer Menghan Li <menghanl@google.com> 1494016270 -0700

make ServerOption panic messages more clear. (#1194)

ServerOption panics when fields that have been manually set are
subsequently set again.  The message verbiage of `X has been set` is
unclear since `has been set` without an adverb like `already` does not
correctly convey that the fields are set-once and were previously set.
At the worst, the original verbiage `X has been set` could imply that
the new value would have been acceptable but another error occurred.

We discovered this while conducting a code survey for implementing
extensible stubs and uniform inbound interception API.