Commit Graph

359 Commits

Author SHA1 Message Date
Steve Myers
5f0870a741 Merge bitcoindevkit/bdk#821: [#344] Add assert_matches
14bc9c0e35 [#344] Add assert_matches Replace assert!(matches! with assert_matches! everywhere Convert assert! to assert_eq! in 2 places (Jeremy Mawson)

Pull request description:

  [#344] Add assert_matches

ACKs for top commit:
  notmandatory:
    ACK 14bc9c0e35
  danielabrozzoni:
    utACK 14bc9c0e35

Tree-SHA512: 730fed9c8c22b0725b1337140636def1a059ac78e4ae16f1abd4c7f379628d9329ccd3ed28e4cbab58e9ace5f349333cb5fa83ec43d507d7a7609601efebc9e1
2022-12-26 13:38:48 -08:00
Jeremy Mawson
14bc9c0e35 [#344] Add assert_matches
Replace assert!(matches! with assert_matches! everywhere
Convert assert! to assert_eq! in 2 places
2022-12-23 22:05:53 +10:00
Daniela Brozzoni
4cad18bbca Bump hwi to 0.4.0 2022-12-19 11:18:44 +01:00
Steve Myers
108edc3a6b Merge bitcoindevkit/bdk#785: Fix wallet export rescan height
e9bbb8724f Fix wallet export rescan height (LLFourn)

Pull request description:

  It would return the latest transaction height rather than the earliest as the height to rescan from.

  Found by @evanlinjin  and I while implementing `bdk_core` stuff into bdk's wallet.

  ### Changelog notice

  - Fix wallet export transaction height

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] This pull request breaks the existing API
  * [x] I've added tests to reproduce the issue which are now passing

ACKs for top commit:
  rajarshimaitra:
    tACK e9bbb8724f
  notmandatory:
    ACK e9bbb8724f

Tree-SHA512: 9b29ef0df39d26806f48b38fa5c3643bad32f58b993ffdcfc7811aca64a025bd8f163967321f874aa2ef3d29c3e7bc6e2f44d348306a37111f4def036d4c095e
2022-11-22 06:30:17 -08:00
Steve Myers
9cb6f70fc0 Merge branch 'master' into fix_wallet_checksum 2022-10-26 22:01:07 -05:00
LLFourn
e9bbb8724f Fix wallet export rescan height
It would return the latest transaction height rather than the earliest :S
2022-10-26 12:35:21 +08:00
Steve Myers
648282e602 Update docs and tests based on review comments 2022-10-25 11:20:22 -05:00
Alekos Filini
1ffd59d469 Upgrade to rust-bitcoin 0.29 2022-10-25 11:16:02 +02:00
Alekos Filini
ae4f4e5416 Upgrade rand to 0.8 2022-10-25 11:15:59 +02:00
Alekos Filini
9854fd34ea Remove deprecated address validators 2022-10-25 11:08:47 +02:00
Steve Myers
60057a7bf7 Deprecate backward compatible get_checksum_bytes, get_checksum functions
Rename replacement functions calc_checksum_bytes and calc_checksum
2022-10-24 14:24:54 -05:00
Alekos Filini
ea47d7a35b Merge bitcoindevkit/bdk#758: Add HWI example in docs
1437e1ecfe Add the hardware_signer example (Daniela Brozzoni)
1a71eb1f47 Update the hardwaresigner module documentation (Daniela Brozzoni)
0695e9fb3e Bump HWI to 0.2.3 (Daniela Brozzoni)
a4a43ea860 Re-export HWI if the hardware-signer feature is set (Daniela Brozzoni)

Pull request description:

  ### Description

  ### Notes to the reviewers

  ### Changelog notice

  - bdk re-exports the `hwi` create when the feature `hardware-signer` is on
  - Add `examples/hardware_signer.rs`

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  afilini:
    ACK 1437e1ecfe

Tree-SHA512: 181f4d14dce11e19497fbf30e0af8de21c2c210d37129d7d879ed5670ed09a25be1c8d371389c431e18df9e76870cf5e4afe7b29a6c05fe59b3e1816bc8cf673
2022-10-24 10:53:39 +02:00
Vladimir Fomene
68dd6d2031 Add signature grinding for ECDSA signatures
This PR adds a new field called `allow_grinding`
in the Signer's `SignOptions` struct that is used
to determine whether or not to grind an ECDSA signature
during the signing process.
2022-10-17 12:27:35 +03:00
Daniela Brozzoni
1a71eb1f47 Update the hardwaresigner module documentation
Add a little example on how to use the HWISigner, slightly improve
the module description
2022-10-13 10:46:47 +01:00
Steve Myers
8e8fd49e04 Merge bitcoindevkit/bdk#764: Use the esplora client crate
d7bfe68e2d Fix broken nightly docs (Alekos Filini)
b11c86d074 Rename internal esplora modules, fix docs (Alekos Filini)
b5b92248c7 Rename esplora features to -async and -blocking (Alekos Filini)
cf2bc388f2 Re-export `esplora_client` (Elias Rohrer)
5baf46f84d Use the external esplora client library (Alekos Filini)

Pull request description:

  ### Description

  Use the external esplora client crate now that it's published

  ### Changelog notice

  - Start using the external esplora client crate
  - Deprecate the `use-esplora-reqwest` and `use-esplora-ureq` features in favor of `use-esplora-async` and `use-esplora-blocking`

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### New Features:

  * [ ] I've added tests for the new feature
  * [ ] I've added docs for the new feature

  #### Bugfixes:

  * [ ] This pull request breaks the existing API
  * [ ] I've added tests to reproduce the issue which are now passing
  * [ ] I'm linking the issue being fixed by this PR

ACKs for top commit:
  notmandatory:
    ACK d7bfe68e2d

Tree-SHA512: 23bd47536fe6f723602cbcc51d909eb9aed28376430f4453eea832e30a587be3d312cdca993d114391132bfb39c48637030f974ab1a742f7defe44f40a82ef8b
2022-09-29 11:46:05 -05:00
Alekos Filini
d7bfe68e2d Fix broken nightly docs 2022-09-29 12:00:11 +02:00
志宇
e2a4a5884b Ensure backward compatibility of the "checksum inception" bug
`Wallet` stores the descriptors' checksum in the database for safety.
Previously, the checksum used was a checksum of a descriptor that
already had a checksum.

This PR allows for backward-compatibility of databases created with this
bug.
2022-09-29 14:45:24 +08:00
志宇
fd34956c29 get_checksum_bytes now checks input data for checksum
If `exclude_hash` is set, we split the input data, and if a checksum
already existed within the original data, we check the calculated
checksum against the original checksum.

Additionally, the implementation of `IntoWalletDescriptor` for `&str`
has been refactored for clarity.
2022-09-29 13:06:03 +08:00
志宇
af0b3698c6 Fix Wallet::descriptor_checksum to actually return the checksum 2022-09-27 21:56:25 +08:00
Alekos Filini
e2bf9734b1 Remove redundant duplicated keys check
This check is redundant since it's already performed by miniscript (see
https://docs.rs/miniscript/7.0.0/miniscript/miniscript/analyzable/enum.AnalysisError.html#variant.RepeatedPubkeys)
and it was incorrectly failing on tr descriptors that contain duplicated
keys across different taproot leaves

Fixes #760
2022-09-24 15:42:42 +02:00
Alekos Filini
5e9965fca7 Enable signing taproot transactions with only non_witness_utxos
Some wallets may only specify the `non_witness_utxo` for a PSBT input.
If that's the case, BDK should still be able to sign.

This was pointed out in the discussion of #734
2022-09-19 10:54:55 +02:00
Elias Rohrer
8963e8c9f4 Improve docs w.r.t. PSBT finalization 2022-09-15 14:45:47 +02:00
Alekos Filini
3451d1c12e Fix docs.rs features 2022-08-31 11:23:51 +02:00
Liam
bfd7b2f65d Allow creating transactions with dust outputs
Add TxBuilder::allow_dust() that skips checking the dust limit
2022-08-30 11:25:34 -04:00
Alekos Filini
061f15af00 Merge bitcoindevkit/bdk#682: Add a custom signer for hardware wallets
138acc3b7d Change `populate_test_db` to not return empty input (wszdexdrf)
d6e1dd1040 Change CI to add test using ledger emulator (wszdexdrf)
76034772cb Add a custom signer for hardware wallets (wszdexdrf)

Pull request description:

  Also adds a new test in CI for building and testing on a virtual
  hardware wallet.

  ### Description

  This PR would enable BDK users to sign transactions using a hardware wallet. It is just the beginning hence there are no complex features, but I hope not for long.
  I have added a test in CI for building a ledger emulator and running the new test on it. The test is similar to the one on bitcoindevkit/rust-hwi.

  ### Notes to the reviewers
  The PR is incomplete (and wouldn't work, as the rust-hwi in `cargo.toml` is pointing to a local crate, temporarily) as a small change is required in rust-hwi (https://github.com/bitcoindevkit/rust-hwi/pull/42).

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### New Features:

  * [x] I've added tests for the new feature
  * [x] I've added docs for the new feature
  * [x] I've updated `CHANGELOG.md`

ACKs for top commit:
  afilini:
    ACK 138acc3b7d

Tree-SHA512: 54337f06247829242b4dc60f733346173d957de8e9f8b80beb91304d679cfb4e0e4db722c967469265a5b6ede2bd641ba5c089760391c671995dc30de37897de
2022-08-29 16:15:02 +02:00
Alekos Filini
2bff4e5e56 Merge bitcoindevkit/bdk#726: [bug-fix] Set the db sync height
08668ac462 Set the db sync height (rajarshimaitra)

Pull request description:

  <!-- You can erase any parts of this template not applicable to your Pull Request. -->

  ### Description

  Fixes #719

  Previously we weren't setting the db sync height in populate_test_db
  macro even when current height is provided.. This creates a bug that
  get_funded_wallet will return 0 balance.

  This PR fixes the populate_test_db macro and updates tests which were
  previously dependent on the unsynced wallet behavior.

  ### Notes to the reviewers

  <!-- In this section you can include notes directed to the reviewers, like explaining why some parts
  of the PR were done in a specific way -->

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  * [x] I've added tests to reproduce the issue which are now passing
  * [x] I'm linking the issue being fixed by this PR

ACKs for top commit:
  afilini:
    ACK 08668ac462

Tree-SHA512: 1dcc968e4b3551e916b450c5ff2fab6636083f104cc982eb3f7602c624382434e0170d9f0c0a356e6c9c5f834eebe5cb1365b37ef73d7b4ef15d652a364dc2ab
2022-08-29 10:24:40 +02:00
wszdexdrf
76034772cb Add a custom signer for hardware wallets
Also add function to get funded wallet with coinbase
2022-08-29 13:53:56 +05:30
Vladimir Fomene
de358f8cdc Implement conversion for Lightning fee rate
Lightning denotes transaction fee rate
sats / 1000 weight units and sats / 1000 vbytes.
Here we add support for creating BDK fee rate from
lightning fee rate. We also move all FeeRate test to
types.rs and rename as_sat_vb to as_sat_per_vb.
2022-08-28 21:37:07 +03:00
rajarshimaitra
08668ac462 Set the db sync height
Previously we weren't setting the db sync height in populate_test_db
macro even when current height is provided.. This creates a bug that
get_funded_wallet will return 0 balance.

This PR fixes the populate_test_db macro and updates tests which were
previously dependent on the unsynced wallet behavior.
2022-08-28 23:51:24 +05:30
Alekos Filini
0a3734ed2b Merge bitcoindevkit/bdk#718: Verify signatures after signing
7b1ad1b629 Verify signatures after signing (Scott Robinson)

Pull request description:

  ### Description

  Verify signatures after signing

  As per [BIP-340, footnote 14][fn]:
  > Verifying the signature before leaving the signer prevents random or
  > attacker provoked computation errors. This prevents publishing invalid
  > signatures which may leak information about the secret key. It is
  > recommended, but can be omitted if the computation cost is prohibitive.

  [fn]: https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki#cite_note-14

  ### Notes to the reviewers

  How do we test this?

  ### Checklists

  #### All Submissions:

  * [ ] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

ACKs for top commit:
  afilini:
    re-ACK 7b1ad1b629

Tree-SHA512: 7319db1f8cec2fcfe4ac443ab5728893f9fb6133b33331b35ec6910662c45de8a7cdcf80ac1f3bb435815e914ccf639682a5c07ff0baef42605bf044a34a8232
2022-08-25 12:21:40 +02:00
Scott Robinson
7b1ad1b629 Verify signatures after signing
As per [BIP-340, footnote 14][fn]:
> Verifying the signature before leaving the signer prevents random or
> attacker provoked computation errors. This prevents publishing invalid
> signatures which may leak information about the secret key. It is
> recommended, but can be omitted if the computation cost is prohibitive.

[fn]: https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki#cite_note-14
2022-08-25 16:29:44 +10:00
Daniela Brozzoni
cd078903a7 Fix P2WPKH_SATISFACTION_SIZE in CS tests
Our costant for the P2WPKH satisfaction size was wrong: in
7ac87b8f99 we added 1 WU for the script
sig len - but actually, that's 4WU! This resulted in
P2WPKH_SATISFACTION_SIZE being equal to 109 instead of 112.
This also adds a comment for better readability.
2022-08-16 18:27:59 +01:00
thunderbiscuit
134b19a9cb Fix minor typos in docs 2022-08-05 12:45:18 -04:00
wszdexdrf
0f03831274 Change get_balance to return in categories.
Add type balance with add, display traits. Change affected tests.
Update `CHANGELOG.md`
2022-08-04 10:37:09 +02:00
Daniela Brozzoni
ef03da0a76 Merge bitcoindevkit/bdk#693: Fix the early InsufficientFunds error in the branch and bound
9d85c9667f Fix the early InsufficientFunds error in the branch and bound (Alekos Filini)

Pull request description:

  ### Description

  We were wrongly considering the sum of "effective value" (i.e. value -
  fee cost) when reporting an early "insufficient funds" error in the
  branch and bound coin selection.

  This commit fixes essentially two issues:
  - Very high fee rates could cause a panic during the i64 -> u64
    conversion because we assumed the sum of effective values would never
    be negative
  - Since we were comparing the sum of effective values of *all* the UTXOs
    (even the optional UTXOs with negative effective value) with the target
    we'd like to reach, we could in some cases error and tell the user we
    don't have enough funds, while in fact we do! Since we are not required
    to spend any of the optional UTXOs, so we could just ignore the ones
    that *cost us* money to spend and excluding them could potentially
    allow us to reach the target.

  There's a third issue that was present before and remains even with this
  fix: when we report the "available" funds in the error, we are ignoring
  UTXOs with negative effective value, so it may look like there are less
  funds in the wallet than there actually are.

  I don't know how to convey the right message the user: if we actually
  consider them we just make the "needed" value larger and larger (which
  may be confusing, because if the user asks BDK to send 10k satoshis, why
  do we say that we actually need 100k?), while if we don't we could report
  an incorrect "available" value.

  ### Notes to the reviewers

  I'm opening this as a draft before adding tests because I want to gather some feedback on the available vs needed error reporting. I personally think reporting a reasonable "needed" value is more important than the "available", because in a wallet app I would expect this is the value that would be shown to the user.

  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  * [ ] This pull request breaks the existing API
  * [ ] I've added tests to reproduce the issue which are now passing
  * [ ] I'm linking the issue being fixed by this PR

ACKs for top commit:
  danielabrozzoni:
    utACK 9d85c9667f

Tree-SHA512: 9a06758cba61ade73198f35b08070987d5eb065e01750ce62409f86b37cd0b0894640e9f75c8b2c26543c0da04e3f77bd397fab540e789f221661aae828db224
2022-08-03 20:04:28 +02:00
Alekos Filini
9d85c9667f Fix the early InsufficientFunds error in the branch and bound
We were wrongly considering the sum of "effective value" (i.e. value -
fee cost) when reporting an early "insufficient funds" error in the
branch and bound coin selection.

This commit fixes essentially two issues:
- Very high fee rates could cause a panic during the i64 -> u64
  conversion because we assumed the sum of effective values would never
  be negative
- Since we were comparing the sum of effective values of *all* the UTXOs
  (even the optional UTXOs with negative effective value) with the target
  we'd like to reach, we could in some cases error and tell the user we
  don't have enough funds, while in fact we do! Since we are not required
  to spend any of the optional UTXOs, so we could just ignore the ones
  that *cost us* money to spend and excluding them could potentially
  allow us to reach the target.

There's a third issue that was present before and remains even with this
fix: when we report the "available" funds in the error, we are ignoring
UTXOs with negative effective value, so it may look like there are less
funds in the wallet than there actually are.

I don't know how to convey the right message the user: if we actually
consider them we just make the "needed" value larger and larger (which
may be confusing, because if the user asks BDK to send 10k satoshis, why
do we say that we actually need 100k?), while if we don't we could report
an incorrect "available" value.
2022-08-03 19:15:06 +02:00
Daniela Brozzoni
85bd126c6c Merge bitcoindevkit/bdk#686: doc: Document that list_transactions() might return unsorted txs
7fdacdbad4 doc: Document that list_transactions() might return unsorted txs, show how to sort them if needed (w0xlt)

Pull request description:

  This PR documents that `list_transactions()` might return unsorted transaction and shows how to sort them if needed.

  Closes #518.

ACKs for top commit:
  danielabrozzoni:
    re-ACK 7fdacdbad4

Tree-SHA512: 83bec98e1903d6dc6b8933e8994cb9d04aad059cee8a7b8e1e3a322cf52511364b36d0cd6be1c8cb1fd82c67f8be5a262bbd2c76e30b24eb4097c30f38aa8b10
2022-08-03 17:17:36 +02:00
w0xlt
7fdacdbad4 doc: Document that list_transactions() might return unsorted txs, show how to sort them if needed 2022-08-03 12:08:50 -03:00
Cesar Alvarez Vallero
e8df3d2d91 Consolidate fee_amount and amount_needed
Before this commit `fee_amount` and `amount_needed` were passed as independent
parameters. From the perspective of coin selection algorithms, they are always
used jointly for the same purpose, to create a coin selection with a total
effective value greater than it's summed values.

This commit removes the abstraction that the use of the two parameter
introduced by consolidating both into a single parameter, `target_amount`, who
carries their values added up.
2022-08-03 12:19:01 +02:00
Alekos Filini
1730e0150f Merge bitcoindevkit/bdk#666: Various fixes to the fee_amount calculation in create_tx
419dc248b6 test: Document `test_bump_fee_add_input_change_dust` (Daniela Brozzoni)
632dabaa07 test: Check tx feerate with longer signatures (Daniela Brozzoni)
2756411ef7 test: Reproduce #660 conditions (Daniela Brozzoni)
50af51da5a test: Fix P2WPKH_FAKE_WITNESS_SIZE (Daniela Brozzoni)
ae919061e2 Take into account the segwit tx header when... ...selecting coins (Daniela Brozzoni)
7ac87b8f99 TXIN_BASE_WEIGHT shouldn't include the script len (Daniela Brozzoni)
ac051d7ae9 Calculate fee amount after output addition (Daniela Brozzoni)
00d426b885 test: Check that the feerate is never below... ...the requested one in assert_fee_rate (Daniela Brozzoni)
42fde6d457 test: Check fee_amount in assert_fee_rate (Daniela Brozzoni)

Pull request description:

  ### Description

  This PR mainly fixes two bugs:
  1. TXIN_BASE_WEIGHT wrongly included the `script_len` (Fixes #160)
  2. We wouldn't take into account the segwit header in the fee calculation, which could have resulted in a transaction with a lower feerate than the requested one
  3. In tests we used to push 108 bytes on the witness as a fake signature, but we should have pushed 106 instead

  I also add a test to reproduce the conditions of #660, to check if it's solved. Turns out it's been solved already in #630, but if you're curious about what the bug was, here it is: https://github.com/bitcoindevkit/bdk/issues/660#issuecomment-1196436776
  ### Checklists

  #### All Submissions:

  * [x] I've signed all my commits
  * [x] I followed the [contribution guidelines](https://github.com/bitcoindevkit/bdk/blob/master/CONTRIBUTING.md)
  * [x] I ran `cargo fmt` and `cargo clippy` before committing

  #### Bugfixes:

  * [ ] This pull request breaks the existing API
  * [x] I've added tests to reproduce the issue which are now passing
  * [x] I'm linking the issue being fixed by this PR

ACKs for top commit:
  afilini:
    ACK 419dc248b6

Tree-SHA512: c7b55342eac440a3607a16b94560cb9c08c4805c853432adfda8e21c5177f85d5a8afe0e7e61140e92c8f10934332459c6234fc5f1509ea699d97b1d04f030c6
2022-08-03 11:40:36 +02:00
Daniela Brozzoni
a713a5a062 Better customize signing in taproot transactions
We would previously always try to sign with the taproot internal
key, and try to sign all the script leaves hashes.
Instead, add the `sign_with_tap_internal_key` and `TapLeaveOptions`
parameters, to be able to specify if we should sign with the internal
key, and exactly which leaves we should sign.
Fixes #616
2022-08-02 12:20:08 +02:00
Daniela Brozzoni
419dc248b6 test: Document test_bump_fee_add_input_change_dust
Add a rationale for the feerate in the test
2022-08-02 12:09:42 +02:00
Daniela Brozzoni
632dabaa07 test: Check tx feerate with longer signatures
This commit also suppresses the `unused_mut` warning
in `assert_fee_rate`, which happens because we call it
without `add_signatures`.
2022-08-02 12:08:56 +02:00
Daniela Brozzoni
2756411ef7 test: Reproduce #660 conditions
Issue #660 has been fixed by 32ae95f463,
when we moved the change calculation inside the coin selection.
This commit just adds a test to make sure that the problem is fixed.
2022-08-02 12:08:55 +02:00
Daniela Brozzoni
50af51da5a test: Fix P2WPKH_FAKE_WITNESS_SIZE
We would previously push 108 bytes on a P2WPKH witness
to simulate signature + pubkey. This was wrong: we should push
106 bytes instead.
The max satisfaction size for a P2WPKH is 112 WU:
elements in witness (1 byte, 1WU) + OP_PUSH (1 byte, 1WU) +
pk (33 bytes, 33 WU) + OP_PUSH (1 byte, 1WU) + signature and sighash
(72 bytes, 72 WU) + scriptsig len (1 byte, 4WU)
We should push on the witness pk + signature and sighash. This is 105
WU. Since we push just once instead of twice, we add 1WU for the OP_PUSH
we are omitting.
2022-08-02 12:08:54 +02:00
Daniela Brozzoni
ae919061e2 Take into account the segwit tx header when...
...selecting coins

We take into account the larger segwit tx header for every
transaction, not just the segwit ones. The reason for this is that
we prefer to overestimate the fees for the transaction than
underestimating them - the former might create txs with a slightly
higher feerate than the requested one, while the latter might
create txs with a slightly lower one - or worse, invalid (<1 sat/vbyte)!
2022-08-02 12:08:53 +02:00
Daniela Brozzoni
7ac87b8f99 TXIN_BASE_WEIGHT shouldn't include the script len
We would before calculate the TXIN_BASE_WEIGHT as prev_txid (32 bytes) +
prev_vout (4 bytes) + sequence (4 bytes) + script_sig_len (1 bytes), but
that's wrong: the script_sig_len shouldn't be included, as miniscript
already includes it in the `max_satisfaction_size` calculation.
Fixes #160
2022-08-02 12:08:52 +02:00
Daniela Brozzoni
ac051d7ae9 Calculate fee amount after output addition
We would previously calculate the fee amount in two steps:
1. Add the weight of the empty transaction
2. Add the weight of each output

That's unnecessary: you can just use the weight of the transaction
*after* the output addition. This is clearer, but also avoids a
rare bug: if there are many outputs, adding them would cause the
"number of outputs" transaction parameter lenght to increase, and we
wouldn't notice it.
This might still happen when adding the drain output - this
commit also adds a comment as a reminder.
2022-08-02 12:08:51 +02:00
Daniela Brozzoni
00d426b885 test: Check that the feerate is never below...
...the requested one in assert_fee_rate
2022-08-02 12:08:26 +02:00
Daniela Brozzoni
42fde6d457 test: Check fee_amount in assert_fee_rate 2022-08-02 12:08:12 +02:00