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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/release-notes.md | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/doc/release-notes.md b/doc/release-notes.md index b0efd9b630..1d358cbfd5 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -115,6 +115,17 @@ version is bumped to 70013. Upon receiving a feefilter message from a peer, a node will not send invs for any transactions which do not meet the filter feerate. [BIP 133](https://github.com/bitcoin/bips/blob/master/bip-0133.mediawiki) +Compact Block support (BIP 152) +------------------------------- + +Support for block relay using the Compact Blocks protocol has been implemented +in PR 8068. + +The primary goal is reducing the bandwidth spikes at relay time, though in many +cases it also reduces propagation relay. It is automatically enabled between +compatible peers. +[BIP 152](https://github.com/bitcoin/bips/blob/master/bip-0152.mediawiki) + Hierarchical Deterministic Key Generation ----------------------------------------- Newly created wallets will use hierarchical deterministic key generation @@ -141,6 +152,28 @@ Low-level P2P changes - The P2P alert system has been removed in PR #7692 and the `alert` P2P message is no longer supported. +- The transaction relay mechanism used to relay one quarter of all transactions + instantly, while queueing up the rest and sending them out in batch. As + this resulted in chains of dependent transactions being reordered, it + systematically hurt transaction relay. The relay code was redesigned in PRs + #7840 and #8082, and now always batches transactions announcements while also + sorting them according to dependency order. This significantly reduces orphan + transactions. To compensate for the removal of instant relay, the frequency of + batch sending was doubled for outgoing peers. + +- Since PR 7840 the BIP35 mempool command is also subject to batch processing. + +- The maximum size of orphan transactions that are kept in memory until their + ancestors arrive has been raised in PR 8179 from 5000 to 99999 bytes. They + are now also removed from memory when they are included in a block, conflict + with a block, and time out after 20 minutes. + +- We respond at most once to a getaddr request during the lifetime of a + connection since PR 7856. + +- Connections to peers who have recently been the first one to give us a valid + new block or transaction are protected from disconnections since PR 8084. + Low-level RPC changes ---------------------- |