view .arcconfig @ 36231:72812ad205d1

wireprotoserver: return to using iscmd() method

This was teased out in part so remotefilelog could disable an old
protocol method over http. It got dropped accidentally in the recent
refactor, but the code was all still present so it's easy to support
for now.

I think once we land remotefilelog, we should probably inline this
function.

Differential Revision: https://phab.mercurial-scm.org/D2285

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