Pierre-Yves David <pierre-yves.david@fb.com> [Fri, 07 Mar 2014 14:46:45 -0800] rev 870
exchange: fix pull over wire protocol
Actually hand pulled obsolescence markers to the pull logic.
In the wire protocol case we did not reset the position of the file pointer
after writing the pulled data. This lead the pull logic to thing that no markers
were send at all.
This changeset fix this client side bug.
(apparently no test check both markers pulling and wireprotocol)