tree 8decaf0e390af35db98dbad1324a11c281b2e9dc
parent 328ca0d959f7e729e96f19538c8f3af8fe782a09
author Yu Ping Hu <yph@google.com> 1376974629 -0700
committer Yu Ping Hu <yph@google.com> 1377042979 -0700

Make validation an operation.

This entails also making an operation for getting the
protocol version.

Change-Id: I8b2855cca338e3dbd8b6826b2c428b9e418a675e