setting an incorrect value should not keep the old data after we already
update the fValid boolean.
That would give the user the impression that the data was removed while
it really isn't.
The server always sends pongs in response to our pings, but we assumed
that the underlying OS would close a connection when the other side
isn't replying (ACKs).
Now we take this responsibility in the code and when no pongs are
registered we also close and re-establish the connection.
This additionally shortens the ping time to 30 seconds and the timeout
to 90 seconds.
This adds support for the
Lexicographical Indexing of Transaction Inputs and Outputs
anonimize concepts of transactions directly in the transaction builder.
These are technically static libs, but not in any way shared libs.
They are used solely only by this repo and really only by the hub.
Most important, no header files are installed and basically none of
the normal rules for reusable libraries are applied to these files.
Flowee experimented with a 'metablock' a piece of data stored next to
the blocks with some metadata it discovered during validation.
One of those pieces of info is the txid, which turned out to be too big
to store here (16GB or so added).
This change removes the txid but it does keep the script-flags and the
fees for each transaction (8 bytes per tx) which adds maybe 3GB to the
entire chain.
This makes the server bind only to yggdrasil (a mesh networking
solution) addresses which have as specific advantage that it does
protocol-level encryption.
What we did previously is load a static chain which was to avoid lots of
work by simply memory-mapping the data instead of inserting it in a
vector.
This improves upon that by also having a metadata file which holds the
block-hashes directly readable. This avoids us having to iterate over
the blockheaders and hashing them.
Additionally we now have a single chain-work field that is the total
amount added work for the headers. This saves us from doing 256-bit
divisions and work for each blockheader as well.
Result is that we make the statup mostly about memory moving and remove
all CPU intensive stuff. Going from 1450ms to 400ms on desktop.
I expect an even greater gain on mobile CPUs.
This avoids a naming conflict with a p2p class BlockHeader.
Notice that the block data structures are mostly still private API, they
are in the utils dir but headers are not installed, nobody has needed
them so far.
A peer that is behind is marked as "on a different chain", which is
ultimately correct, but the response to punish or ban them is too much.
We could very well reconnect later when the situation is resolved.
So, detect when a peer is simply behind and respond by disconnecting
without punishment.
tomFlowee