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| author | Matt Corallo <git@bluematt.me> | 2019-03-26 16:40:58 -0400 |
|---|---|---|
| committer | Matt Corallo <git@bluematt.me> | 2019-07-09 15:46:25 -0400 |
| commit | 50cede3f5a4d4fbfbb7c420b94e661a6a159bced (patch) | |
| tree | f6a32ea8f748c39733206f19574a83796b622a34 /src/validation.h | |
| parent | 1212808762f63185bbde980c154d3e1a6c6eb819 (diff) | |
| download | bitcoin-50cede3f5a4d4fbfbb7c420b94e661a6a159bced.tar.xz | |
[mempool] Allow one extra single-ancestor transaction per package
This implements the proposed policy change from [1], which allows
certain classes of contract protocols involving revocation
punishments to use CPFP. Note that some such use-cases may still
want some form of one-deep package relay, though even this alone
may greatly simplify some lightning fee negotiation.
[1] https://lists.linuxfoundation.org/pipermail/bitcoin-dev/2018-November/016518.html
Diffstat (limited to 'src/validation.h')
| -rw-r--r-- | src/validation.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/validation.h b/src/validation.h index 638229952d..a72ed3c580 100644 --- a/src/validation.h +++ b/src/validation.h @@ -63,6 +63,12 @@ static const unsigned int DEFAULT_ANCESTOR_SIZE_LIMIT = 101; static const unsigned int DEFAULT_DESCENDANT_LIMIT = 25; /** Default for -limitdescendantsize, maximum kilobytes of in-mempool descendants */ static const unsigned int DEFAULT_DESCENDANT_SIZE_LIMIT = 101; +/** + * An extra transaction can be added to a package, as long as it only has one + * ancestor and is no larger than this. Not really any reason to make this + * configurable as it doesn't materially change DoS parameters. + */ +static const unsigned int EXTRA_DESCENDANT_TX_SIZE_LIMIT = 10000; /** Default for -mempoolexpiry, expiration time for mempool transactions in hours */ static const unsigned int DEFAULT_MEMPOOL_EXPIRY = 336; /** Maximum kilobytes for transactions to store for processing during reorg */ |