This avoids circular dependency happening when importing MAGIC_BYTES.
Before,
p2p.py <--import for EncryptedP2PState-- v2_p2p.py
| ^
| |
└---------import for MAGIC_BYTES----------┘
Now, MAGIC_BYTES are kept separately in messages.py
Co-authored-by: Martin Zumsande <mzumsande@gmail.com>
When a block is initially read from a blk*.dat file during reindexing,
it can be added to the block index only if all of its ancestor blocks
have been added, which is rare. If the block's ancestors have not been
added, the block must be re-read from disk later when it can be added.
This commit: During the initial block read, deserialize only its header,
rather than the entire block, since this is sufficient to determine
if its parent (and thus all its ancestors) has been added. This is a
performance improvement.
The previous diff touched most files in ./test/, so bump the headers to
avoid having to touch them again for a bump later.
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./test/
-END VERIFY SCRIPT-
