This replaces using inv messages to announce new blocks, when a peer requests
(via the new "sendheaders" message) that blocks be announced with headers
instead of inv's.
Since headers-first was introduced, peers send getheaders messages in response
to an inv, which requires generating a block locator that is large compared to
the size of the header being requested, and requires an extra round-trip before
a reorg can be relayed. Save time by tracking headers that a peer is likely to
know about, and send a headers chain that would connect to a peer's known
headers, unless the chain would be too big, in which case we revert to sending
an inv instead.
Based off of @sipa's commit to announce all blocks in a reorg via inv,
which has been squashed into this commit.
Rebased-by: Pieter Wuille
This allows for much finer control of the transaction fees per kilobyte
as it prevent small transactions using a fee that is more appropriate
for one that is of a kilobyte.
This also allows controlling the fee per kilobyte over rpc such that:
bitcoin-cli settxfee `bitcoin-cli estimatefee 2`
would make sense, while currently it grossly fails often by a factor of x3
fa41d4c [qt] Move GUI related HelpMessage() part downstream (MarcoFalke)
faf93f3 [trivial] Reuse translation and cleanup DEFAULT_* values (MarcoFalke)
3307bdb Bugfix: Omit wallet-related options from -help when wallet is not supported (Luke Dashjr)
b966aa8 Constrain constant values to a single location in code (Luke Dashjr)
This switches the Merkle tree logic for blocks to one that runs in constant (small) space.
The old code is moved to tests, and a new test is added that for various combinations of
block sizes, transaction positions to compute a branch for, and mutations:
* Verifies that the old code and new code agree for the Merkle root.
* Verifies that the old code and new code agree for the Merkle branch.
* Verifies that the computed Merkle branch is valid.
* Verifies that mutations don't change the Merkle root.
* Verifies that mutations are correctly detected.
a46f87f Initialize logging before we do parameter interaction (Jonas Schnelli)
df66147 Move -blocksonly parameter interaction to the new ParameterInteraction() function (Jonas Schnelli)
68354e7 [QT] Call inits parameter interaction before we create the options model (Jonas Schnelli)
411b05a Refactor parameter interaction, call it before AppInit2() (Jonas Schnelli)
This makes sure that retransmits by a whitelisted peer also actually
result in a retransmit.
Further, this changes the logic to never relay in case we would assign
a DoS score, as we expect to get DoS banned ourselves as a result.
Wladimir J. van der Laan