commit 6509da54f5c95dd118903653e1ec55c8511241cc
author Jungho Ahn <jhahn@google.com> Thu Mar 31 18:38:55 2016 -0700
committer Jungho Ahn <jhahn@google.com> Thu Mar 31 18:38:55 2016 -0700
tree df85af2ac8c433193da5a871b4e9f97d366cb699
parent 1f62118c27bd170ac77bdeae2e9ce1c2d9cbed9b

discovery: support large advertisements

  Support large advertisements by
    - discovery service brings up its own directory server so that
      we can fetch large advertisements through vanadium RPC without
      being restricted by the underlying protocol.
    - if the advertisement is too large for each plugin to advertise,
      it will try to send only mandatary fields like interface name,
      hash, and the directory server address.
    - during scanning, if the discovered advertisement does not have
      an enough information to query against it, it will be fetched
      from the directory server directly.
    - attachments are optional. so directory server will not send
      if they are too big. In this case, each large attachment will
      be fetched through additional RPCs when it is requested.

  * plugins will be updated in the following CL.

Change-Id: If9d615ecb54a8cc3da2ccbd3610e67090d2a7340