dash/doc/release-notes-18807.md

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Merge #18807: [doc / test / mempool] unbroadcast follow-ups 9e1cb1adf1800efe429e348650931f2669b0d2c0 [trivial/doc] Fix comment type (Amiti Uttarwar) 8f30260a67166a6ab7c0f33f7ec1990d3c31761e [doc] Update unbroadcast description in RPC results (Amiti Uttarwar) 750456d6f29c63d57af05bfbdd6035bb9c965de2 [trivial] Remove misleading 'const' (Amiti Uttarwar) fa32e676e5833a5c5fc735ef00c0a80f5fab7a2c [test] Manage node connections better in mempool persist test (Amiti Uttarwar) 1f94bb0c744a103b633c1051e8fbc01e612097dc [doc] Provide rationale for randomization in scheduling. (Amiti Uttarwar) 9c8a55d9cb0ec73f10b196e79b637aa601c0a6b7 [mempool] Don't throw expected error message when upgrading (Amiti Uttarwar) ba5498318233ab81decbc585e9619d8ffe2df1b0 [test] Test that wallet transactions aren't rebroadcast before 12 hours (Amiti Uttarwar) 00d44a534b4e5ae249b8011360c6b0f7dc731581 [test] P2P connection behavior should meet expectations (Amiti Uttarwar) bd093ca15de762fdaf0937a0877d17b0c2bce16e [test] updates to unbroadcast test (Amiti Uttarwar) dab298d9ab5a5a41685f437db9081fa7b395fa73 [docs] add release notes (Amiti Uttarwar) Pull request description: This PR is a follow up to #18038 which introduced the idea of an unbroadcast set & focuses mostly on documentation updates and test fixes. One small functionality update to not throw an expected error in `LoadMempool` when you upgrade software versions. #18895 is another follow up to that addresses other functionality updates. Background context: The unbroadcast set is a mechanism for the mempool to track locally submitted transactions (via wallet or RPC). The node does a best-effort of delivering the transactions to the network via retries every 10-15 minutes until either a `GETDATA` is received or the transaction is removed from the mempool. ACKs for top commit: MarcoFalke: ACK 9e1cb1adf1 👁 gzhao408: ACK [`9e1cb1a`](https://github.com/bitcoin/bitcoin/pull/18807/commits/9e1cb1adf1800efe429e348650931f2669b0d2c0) Tree-SHA512: 0cd51c4ca368b9dce92d50d73ec6e9df278a259e609eef2858f24cb8595ad07acc3db781d9eb0c351715f18fca5a2b4526838981fdb34a522427e9dc868bdaa6
2020-05-30 18:22:03 +02:00
P2P and network changes
-----------------------
- The mempool now tracks whether transactions submitted via the wallet or RPCs
have been successfully broadcast. Every 10-15 minutes, the node will try to
announce unbroadcast transactions until a peer requests it via a `getdata`
message or the transaction is removed from the mempool for other reasons.
The node will not track the broadcast status of transactions submitted to the
node using P2P relay. This version reduces the initial broadcast guarantees
for wallet transactions submitted via P2P to a node running the wallet. (#18038)
Updated RPCs
------------
- `getmempoolinfo` now returns an additional `unbroadcastcount` field. The
mempool tracks locally submitted transactions until their initial broadcast
is acknowledged by a peer. This field returns the count of transactions
waiting for acknowledgement.
- Mempool RPCs such as `getmempoolentry` and `getrawmempool` with
`verbose=true` now return an additional `unbroadcast` field. This indicates
whether initial broadcast of the transaction has been acknowledged by a
peer. `getmempoolancestors` and `getmempooldescendants` are also updated.
Wallet
------
- To improve wallet privacy, the frequency of wallet rebroadcast attempts is
reduced from approximately once every 15 minutes to once every 12-36 hours.
To maintain a similar level of guarantee for initial broadcast of wallet
transactions, the mempool tracks these transactions as a part of the newly
introduced unbroadcast set. See the "P2P and network changes" section for
more information on the unbroadcast set. (#18038)