The implementation has been adapted from the dcrec module in dcrd. The
bug was initially fixed in decred/dcrd@3d9cda1 while transitioning to a
constant time algorithm. A large set of test vectors were subsequently
added in decred/dcrd@8c6b52d.
The function signature has been preserved for backwards compatibility.
This means that returning whether the value has overflowed, and the
corresponding test vectors have not been backported.
This fixes#1170 and closes a previous attempt to fix the bug in #1178.
The current methods to add to a UtxoViewpoint don't allow for a situation where
we have only UTXO data but not a whole transaction. This commit allows
contstruction of a UtxoEntry without requiring a full MsgTx.
AddTxOut() and AddTxOuts() both require a whole transaction, including the inputs,
which are only used in order to calculate the txid. In some situations, such as
with use of the utreexo accumulator, we only have the utxo data but not the
transaction which created it.
For reference, utreexo's initial usage of the blockchain.NewUtxoEntry() function is at
https://github.com/mit-dci/utreexo/pull/135/files#diff-3f7b8f9991ea957f1f4ad9f5a95415f0R96
Without this, users of this library wouldn't be able to issue GetBlock
requests to nodes which haven't updated to support the latest request
format, namely the use of a single `int` parameter to denote verbosity
instead of two `bool`s.
This change makes btcd's getblock command match bitcoind's. Previously
the default verbosity was 0, which caused errors when using the
rpcclient library to connect to a bitcoind node - getblock would
unmarshall incorrectly since it didn't expect a verbosity=1 result when
it did not specify verbosity.
I started playing with simnet and was confronted with error message:
```
[ERR] FNDG: Unable to broadcast funding tx for ChannelPoint(<point>:0):
-22: TX rejected: transaction <tx> has witness data, but segwit isn't active yet
```
I wasn't aware of the activation period so I got quite puzzled.
Google helped. But I think the message could mention likely cause.
Newly it optionally prints something like:
```
(The threshold for segwit activation is 300 blocks on simnet, current best height is 113)
```
Refactor GetBlockVerboseResult into two separate types: one type for getblock "hash" verbosity=1,
and a second type for getblock "hash" verbosity=2. This is necessary due to how getblock returns
a block's transaction data based on the provided verbosity parameter.
If verbosity=1, then getblock.Tx is an array of a block's transaction ids (txids) as strings.
If verbosity=2, then getblock.Tx is an array of raw transaction data.
Due to differences in how getblock returns data based on the provided verbosity parameter, it's necessary
to have two separate return types based on verbosity. This necessitates a separate unmarshalling function
(represented throughout rpcclient/chain.go as Result.Receive()) to ensure that data is correctly unmarshalled
and returned to the user.
* rpcclient: replace futures mainnet with params
Adds a chaincfg.Params to the Client
rpcclient: parse config to assign params
* rpcclient: change address commands to Address
* Change address future struct to contain a network field, so futures
can return the correct type for Receive
Due to differences in how getblock returns data based on the provided verbosity parameter, it's necessary
to have two separate return types based on verbosity. This necessitates a separate unmarshalling function
(represented throughout rpcclient/chain.go as Result.Receive()) to ensure that data is correctly unmarshalled
and returned to the user.
and a second type for getblock "hash" verbosity=2. This is necessary due to how getblock returns
a block's transaction data based on the provided verbosity parameter.
If verbosity=1, then getblock.Tx is an array of a block's transaction ids (txids) as strings.
If verbosity=2, then getblock.Tx is an array of raw transaction data.
