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Github-Pull: #7335
Rebased-From: 7777994846cdb9b9cf69e391a33eeed30393bbcf
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- Add race-condition debugging tool to mininode
- Eliminate race condition in sendheaders.py test
Clear the last block announcement before mining new blocks.
Github-Pull: #7308
Rebased-From: 82a0ce09b45ab9c09ce4f516be5b9b413dcec470 168915e6dec88b31793d4ee4b60b94d4149de36c
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Remove necessity to call create_callback_map (as well as the function
itself) from the Python P2P test framework. Invoke the appropriate
methods directly.
- Easy to forget to call it and wonder why it doesn't work
- Simplifies the code
- This makes it easier to handle new messages in subclasses
Github-Pull: #7171
Rebased-From: 2f601d215da1683ae99ab9973219044c32fa2093
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Github-Pull: #7133
Rebased-From: ec73ef37eccfeda76de55c4ff93ea54d4e69e1ec e20672479ef7f2048c2e27494397641d47a4d88d 6b849350ab074a7ccb80ecbef387f59e1271ded6 b6a0da45db8d534e7a77d1cebe382cd5d83ba9b8 d41e44c9accb3df84e0abbc602cc76b72754d382 aa4b0c26b0a94ca6164c441aae723e118554d214
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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
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