- Add getRecordCount() to TunnelBuildMessage and TunnelBuildReplyMessage
so they can be extended.
- New I2NP Messages VariableTunnelBuildMessage and VariableTunnelBuildReplyMessage,
which contain the number of request slots in them.
- Convert all static assumptions of 8 slots to getRecordCount()
- Use the new VTBM if all hops in the tunnel and the OBEP or IBGW of the reply tunnel
support it, and the tunnel is 4 hops or shorter.
- Reply to a VTBM with a VTBRM of the same size
- Make BuildReplyHandler static
- Convert the currentlyBuilding List to a ConcurrentHashMap to speed reply lookups
and eliminate a global lock; don't put fallback tunnels in there
- Add new tunnel.corruptBuildReply stat
- Various cleanups and javadoc
Tested as compatible with current network, new messages untested.
* First pass of the new tunnel creation crypto, specified in the new
router/doc/tunnel-alt-creation.html (referenced in the current
router/doc/tunnel-alt.html). It isn't actually used anywhere yet, other
than in the test code, but the code verifies the technical viability, so
further scrutiny would be warranted.
