In order to ensure that the change of nVersion to a uint32_t in the
previous commit has no effect, rename nVersion to version in this commit
so that reviewers can easily spot if a spot was missed or if there is a
check somewhere whose semantics have changed.
Drop unnecessary ParamsStream references from CTransaction and
CMutableTransaction constructors. This just couples these classes unnecessarily
to the ParamsStream class, making the ParamsStream class harder to modify, and
making the transaction classes in some cases (depending on parameter order)
unable to work with stream classes that have multiple parameters set.
This commit makes a minimal change to the ParamsStream class to let it retrieve
multiple parameters. Followup commits after this commit clean up code using
ParamsStream and make it easier to set multiple parameters.
Currently it is only possible to attach one serialization parameter to a stream
at a time. For example, it is not possible to set a parameter controlling the
transaction format and a parameter controlling the address format at the same
time because one parameter will override the other.
This limitation is inconvenient for multiprocess code since it is not possible
to create just one type of stream and serialize any object to it. Instead it is
necessary to create different streams for different object types, which
requires extra boilerplate and makes using the new parameter fields a lot more
awkward than the older version and type fields.
Fix this problem by allowing an unlimited number of serialization stream
parameters to be set, and allowing them to be requested by type. Later
parameters will still override earlier parameters, but only if they have the
same type.
This change requires replacing the stream.GetParams() method with a
stream.GetParams<T>() method in order for serialization code to retrieve the
desired parameters. This change is more verbose, but probably a good thing for
readability because previously it could be difficult to know what type the
GetParams() method would return, and now it is more obvious.
It doesn't make sense to be checking whether the fee paid is underpaying
before we've finished setting the fees. So do that after we have done
the reduction for SFFO and change adjustment for fee overpayment.
d4b3483cece9c27d58e4026df35725655ce06cf5 Primitives: Correct CTransaction deserialization docstring (TheCharlatan)
Pull request description:
Since https://github.com/bitcoin/bitcoin/pull/8589 CTxWitness was removed and instead replaced with CScriptWitness inside each CTxIn.
ACKs for top commit:
w0xlt:
ACK d4b3483
Tree-SHA512: 02bb73e8a7d1fc449e4776a162009261baecc573837fade74ad7d76b3cd63200424e02fd0abd000c63706072f2ab3c95d3053139495b81347463f43e56192ca9
fade6195b1c230edd561443637a7bde81c2594a4 Move TX_MAX_STANDARD_VERSION to policy (MarcoFalke)
Pull request description:
`primitives` should only be used for the raw datastructures (parsing and format). It is not the right place to document relay policy.
ACKs for top commit:
laanwj:
Code review ACK fade6195b1c230edd561443637a7bde81c2594a4
lontivero:
Concept ACK fade6195b1
Tree-SHA512: f809c4aecd14d7e9feaa7b50b9c0697232991eef36190cd960bcfb0ad6e20c71a4f6aab48c7747cf8a681eb14feda60c55b09a37f128673d519567224f29cd97
f9ee0f37c28f604bc82dab502ce229c66ef5b3b9 Add comments to CustomUintFormatter (Pieter Wuille)
4eb5643e3538863c9d2ff261f49a9a1b248de243 Convert everything except wallet/qt to new serialization (Pieter Wuille)
2b1f85e8c52c8bc5a17eae4c809eaf61d724af98 Convert blockencodings_tests to new serialization (Pieter Wuille)
73747afbbeb013669faf4c4d2c0903cec4526fb0 Convert merkleblock to new serialization (Pieter Wuille)
d06fedd1bc26bf5bf2b203d4445aeaebccca780e Add SER_READ and SER_WRITE for read/write-dependent statements (Russell Yanofsky)
6f9a1e5ad0a270d3b5a715f3e3ea0911193bf244 Extend CustomUintFormatter to support enums (Russell Yanofsky)
769ee5fa0011ae658770586442715452a656559d Merge BigEndian functionality into CustomUintFormatter (Pieter Wuille)
Pull request description:
The next step of changes from #10785.
This:
* Adds support for enum serialization to `CustomUintFormatter`, used in `CAddress` for service flags.
* Merges `BigEndian` into `CustomUintFormatter`, used in `CNetAddr` for port numbers.
* Converts everything (except wallet and gui) to use the new serialization framework.
ACKs for top commit:
MarcoFalke:
re-ACK f9ee0f37c2, only change is new documentation commit for CustomUintFormatter 📂
ryanofsky:
Code review ACK f9ee0f37c28f604bc82dab502ce229c66ef5b3b9. Just new commit adding comment since last review
jonatack:
Code review re-ACK f9ee0f37c28f604bc82dab502ce229c6 only change since last review is an additional commit adding Doxygen documentation for `CustomUintFormatter`.
Tree-SHA512: e7a0a36afae592d5a4ff8c81ae04d858ac409388e361f2bc197d9a78abca45134218497ab2dfd6d031e0cce0ca586cf857077b7c6ce17fccf67e2d367c1b6cd4
bb530efa18 Disallow extended encoding for non-witness transactions (Pieter Wuille)
Pull request description:
BIP144 specifies that transactions without witness should use the legacy encoding, which is currently not enforced.
This rule was present in the original SegWit implementation (https://github.com/bitcoin/bitcoin/pull/8149), but was subsequently dropped (https://github.com/bitcoin/bitcoin/pull/8589).
As all hashes, txids, and weights are always computed over a reserialized version of a transaction, it is mostly harmless to permit extended encoding for non-segwit transactions, but I'd rather strictly follow the BIP.
ACKs for commit bb530e:
instagibbs:
utACK bb530efa18
stevenroose:
utACK bb530efa1872ec963417f61da9a95185c7a7a7d6
Tree-SHA512: 1aeccd6a555f43784fefb076ce2e8ad2f5ba7be49840544a50050d0390f82373f87201bf56cf8bb30841b4f9cd893b382261a080da875d4e11ab7051f8640dbe
This makes the above constructor explicit. The rationale is that this conversion has very significant performance effects. Making it explicit makes it easier to reason about these performance trade-offs, and helps identify possible functions that need a CMutableTransaction version.
37495e0d8 Reorder C{,Mutable}Transaction for better packing (Jeremy Rubin)
Pull request description:
These commits revise the layout of a few key classes to eliminate padding, eliminating useless memory overhead.
-This reduces CTransaction from 96 bytes to 88 bytes
Tree-SHA512: 91d1fec363edebbb1f1a5b98142c767511e99d3be857148a76e31cc512c9ab3d153083fa6b46b6407974d3b88de984b436c33e8606fbb2b273d74c825195aa17
0aadc11fd Avoid dereference-of-casted-pointer (Pieter Wuille)
Pull request description:
And prefer a static_cast to the intended reference type.
Tree-SHA512: e83b20023a4dca6029b46f7040a8a6fd54e1b42112ec0c87c3c3b567ed641de97a9e2335b57a2efb075491f641e5b977bc226a474276bea0c3c3c71d8d6ac54d
Some people keep thinking that MAX_BLOCK_BASE_SIZE is a separate
size limit from the weight limit when it fact it is superfluous,
and used in early tests before the witness data has been
validated or just to compute worst case sizes. The size checks
that use it would not behave any differently consensus wise
if they were eliminated completely.
Its correct value is not independently settable but is a function
of the weight limit and weight formula.
This patch just eliminates it and uses the scale factor as
required to compute the worse case constants.
It also moves the weight factor out of primitives into consensus,
which is a more logical place for it.
