This (compatibility-breaking) change moves much of the validation data and
encoding parameters out of the URI and into the so-called "thingA" block
(which will get a better name as soon as we find one we're comfortable with).
The URI retains the "storage_index" (a generalized term for the role that
we're currently using the verifierid for, the unique index for each file
that gets used by storage servers to decide which shares to return), the
decryption key, the needed_shares/total_shares counts (since they affect
peer selection), and the hash of the thingA block.
This shortens the URI and lets us add more kinds of validation data without
growing the URI (like plaintext merkle trees, to enable strong incremental
plaintext validation), at the cost of maybe 150 bytes of alacrity. Each
storage server holds an identical copy of the thingA block.
This is an incompatible change: new messages have been added to the storage
server interface, and the URI format has changed drastically.
Unfortunately this doesn't make the O(n) memory usage go away. It might reduce the constants -- I'm not sure. I look forward to enhancement #54 -- memory usage tests!
Rather than use separate client.pem and introducer.pem files, use 'node.pem'
for all nodes regardless of what type it is. This is slightly cleaner, but
introduces a compatibility. Users who upgrade to this change should do
'mv client.pem node.pem' to avoid generating a new certificate and thus
changing their TubID.
Actually of course iputil can't tell exactly how good they are, and a wise user
of iputil will try all of them. But you can't try all of them simultaneously,
so you might as well try the best ones first.
Add a new method to RIIntroducer, to allow the central introducer node to
remove peers from the active set after they've gone away. Without this,
client nodes accumulate stale peer FURLs forever. This introduces a
compatibility break, as old introducers won't know about the 'lost_peers'
message, although the errors produced are probably harmless.
Add a new method to RIIntroducer, to allow the central introducer node to
remove peers from the active set after they've gone away. Without this,
client nodes accumulate stale peer FURLs forever. This introduces a
compatibility break, as old introducers won't know about the 'lost_peers'
message, although the errors produced are probably harmless.
