276972cb95 wallet_bumpfee.py: Make sure coin selection produces change (Gregory Sanders)
Pull request description:
I was hitting the case where change-less transactions were being made.
ACKs for top commit:
ryanofsky:
utACK 276972cb95
Tree-SHA512: e2b7a50363daddd3ee749cacfc9d3d685a6c0c7e3e48118bb60131d205bf83ea06cdd66b69dfa3bd4dbb3bbf2b5b673d7225171486ae72fc762e5dabe2c01ef5
Unnamed arguments are confusing as to what they mean without looking up
the function signature.
Since segwit is active by default in regtest, and all blocks are
serialized with witness (#15664, c459c5f), remove the argument
`with_witness=True` from all calls to `CBlock::serialize` and
`BlockTransactions::serialize`.
This diff has been created with a script, but is better reviewed without
a scripted diff.
sed -i --regexp-extended -e 's/block(_?[2a-z]*)\.serialize\([a-z_]*=?True/block\1.serialize(/g' $(git grep -l serialize ./test)
184f8785f wallet_bumpfee.py: add test for change key preservation (Gregory Sanders)
d08becff8 add functional tests for feerate bumpfee with adding inputs (Gregory Sanders)
0ea47ba7b generalize bumpfee to add inputs when needed (Gregory Sanders)
Pull request description:
When targeting a feerate using `bumpfee`, call a new function that directly uses `CWallet::CreateTransaction` and coin control to get the desired result. This allows us to get a superset of previous behavior, with an arbitrary RBF bump of a transaction provided it passes the preconditional checks and spare confirmed utxos are available.
Note(s):
0) The coin selection will use knapsack solver for the residual selection.
1) This functionality, just like knapsack coin selection in general, will hoover up negative-value inputs when given the chance.
2) Newly added inputs must be confirmed due to current Core policy. See error: `replacement-adds-unconfirmed`
3) Supporting this with `totalFee` is difficult since the "minimum total fee" option in `CreateTransaction` logic was (rightly)taken out in #10390 .
ACKs for commit 184f87:
jnewbery:
utACK 184f8785f7
Tree-SHA512: fb6542bdfb2c6010e328ec475cf9dcbff4eb2b1a1b27f78010214534908987a5635797196fa05edddffcbcf2987335872dc644a99261886d5cbb34a8f262ad3e
c1dde3a949 No longer shutdown after encrypting the wallet (Andrew Chow)
d7637c5a3f After encrypting the wallet, reload the database environment (Andrew Chow)
5d296ac810 Add function to close all Db's and reload the databae environment (Andrew Chow)
a769461d5e Move BerkeleyEnvironment deletion from internal method to callsite (Andrew Chow)
Pull request description:
This is the replacement for #11678 which implements @ryanofsky's [suggestion](https://github.com/bitcoin/bitcoin/pull/11678#pullrequestreview-76464511).
Shutting down the software was to prevent the BDB environment from writing unencrypted private keys to disk in the database log files, as was noted [here](https://bitcointalk.org/index.php?topic=51474.msg616068#msg616068). This PR replaces the shutdown behavior with a CDBEnv flush, close, and reopen which achieves the same effect: everything is cleanly flushed and closed, the log files are removed, and then the environment reopened to continue normal operation.
To ensure that no unencrypted private keys are in the log files after encrypting the wallet, I wrote [this script](https://gist.github.com/achow101/7f7143e6c3d3fdc034d3470e72823e9d) to pull private keys from the original wallet file and searches for these keys in the log files (note that you will have to change your file paths to make it work on your own machine).
As for concerns about private keys being written to slack space or being kept in memory, these behaviors no longer exist after the original wallet encryption PR and the shutting down solution from 2011.
cc @ryanofsky
Tree-SHA512: 34b894283b0677a873d06dee46dff8424dec85a2973009ac9b84bcf3d22d05f227c494168c395219d9aee3178e420cf70d4b3eeacc9785aa86b6015d25758e75
f526046 adapt bumpfee change discard test to be more strict and add note on p2sh discrep (Gregory Sanders)
5805d6f feebumper: discard change outputs below discard rate (Gregory Sanders)
Pull request description:
The "discard rate" is the concept we use to ensure the wallet isnt creating not so useful just-above-relay dust.
Outside of bumpfee previous to this PR, and manually creating such an output, the wallet will never make change outputs of that size, preferring to send them to fees instead.
"Worst case" for the user is that users pay a slightly higher feerate than they were expecting, which is already a possibility with relay dust.
Tree-SHA512: dd69351810dc1709437602e7db1be46e4e905ccd8e16d03952de8b4c1fdbf9cb7e6c99968930896baf6b5c7cb005a03ec0506a2669d22e21e32982e60329606b
Change all instances of validateaddress to getaddressinfo since it seems that
no test actually uses validateaddress for actually validating addresses.
-BEGIN VERIFY SCRIPT-
find ./test/functional -path '*py' -not -path ./test/functional/wallet_disable.py -not -path ./test/functional/rpc_deprecated.py -not -path ./test/functional/wallet_address_types.py -exec sed -i'' -e 's/validateaddress/getaddressinfo/g' {} \;
-END VERIFY SCRIPT-
