pub struct BlockTemplateResponse { /* private fields */ }
Expand description
A serialized getblocktemplate
RPC response in template mode.
This is the output of the getblocktemplate
RPC in the default ‘template’ mode. See
BlockProposalResponse
for the output in ‘proposal’ mode.
Implementations§
Source§impl BlockTemplateResponse
Auto-generated by derive_getters::Getters
.
impl BlockTemplateResponse
Auto-generated by derive_getters::Getters
.
Sourcepub fn capabilities(&self) -> &Vec<String>
pub fn capabilities(&self) -> &Vec<String>
The getblocktemplate RPC capabilities supported by Zebra.
At the moment, Zebra does not support any of the extra capabilities from the specification:
proposal
: https://en.bitcoin.it/wiki/BIP_0023#Block_Proposallongpoll
: https://en.bitcoin.it/wiki/BIP_0022#Optional:_Long_Pollingserverlist
: https://en.bitcoin.it/wiki/BIP_0023#Logical_Services
By the above, Zebra will always return an empty vector here.
Sourcepub fn previous_block_hash(&self) -> Hash
pub fn previous_block_hash(&self) -> Hash
The hash of the previous block.
Sourcepub fn block_commitments_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
pub fn block_commitments_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
The block commitment for the new block’s header.
Same as [DefaultRoots.block_commitments_hash
], see that field for details.
Sourcepub fn light_client_root_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
pub fn light_client_root_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
Legacy backwards-compatibility header root field.
Same as [DefaultRoots.block_commitments_hash
], see that field for details.
Sourcepub fn final_sapling_root_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
pub fn final_sapling_root_hash(&self) -> ChainHistoryBlockTxAuthCommitmentHash
Legacy backwards-compatibility header root field.
Same as [DefaultRoots.block_commitments_hash
], see that field for details.
Sourcepub fn default_roots(&self) -> &DefaultRoots
pub fn default_roots(&self) -> &DefaultRoots
The block header roots for [GetBlockTemplate.transactions
].
If the transactions in the block template are modified, these roots must be recalculated according to the specification.
Sourcepub fn transactions(&self) -> &Vec<TransactionTemplate<NonNegative>>
pub fn transactions(&self) -> &Vec<TransactionTemplate<NonNegative>>
The non-coinbase transactions selected for this block template.
Sourcepub fn coinbase_txn(&self) -> &TransactionTemplate<NegativeOrZero>
pub fn coinbase_txn(&self) -> &TransactionTemplate<NegativeOrZero>
The coinbase transaction generated from transactions
and height
.
Sourcepub fn long_poll_id(&self) -> LongPollId
pub fn long_poll_id(&self) -> LongPollId
An ID that represents the chain tip and mempool contents for this template.
Sourcepub fn target(&self) -> ExpandedDifficulty
pub fn target(&self) -> ExpandedDifficulty
The expected difficulty for the new block displayed in expanded form.
Sourcepub fn min_time(&self) -> DateTime32
pub fn min_time(&self) -> DateTime32
For each block other than the genesis block, nTime MUST be strictly greater than the median-time-past of that block.
Sourcepub fn mutable(&self) -> &Vec<String>
pub fn mutable(&self) -> &Vec<String>
Hardcoded list of block fields the miner is allowed to change.
Sourcepub fn nonce_range(&self) -> &String
pub fn nonce_range(&self) -> &String
A range of valid nonces that goes from u32::MIN
to u32::MAX
.
Sourcepub fn sigop_limit(&self) -> u64
pub fn sigop_limit(&self) -> u64
Max legacy signature operations in the block.
Sourcepub fn size_limit(&self) -> u64
pub fn size_limit(&self) -> u64
Max block size in bytes
Sourcepub fn cur_time(&self) -> DateTime32
pub fn cur_time(&self) -> DateTime32
the current time as seen by the server (recommended for block time). note this is not necessarily the system clock, and must fall within the mintime/maxtime rules
Sourcepub fn bits(&self) -> CompactDifficulty
pub fn bits(&self) -> CompactDifficulty
The expected difficulty for the new block displayed in compact form.
Sourcepub fn max_time(&self) -> DateTime32
pub fn max_time(&self) -> DateTime32
the maximum time allowed
https://en.bitcoin.it/wiki/BIP_0023#Mutations
Zebra adjusts the minimum and current times for testnet minimum difficulty blocks, so we need to tell miners what the maximum valid time is.
This field is not in zcashd
or the Zcash RPC reference yet.
Currently, some miners just use min_time
or cur_time
. Others calculate max_time
from the
fixed 90 minute consensus rule, or a smaller fixed interval (like 1000s).
Some miners don’t check the maximum time. This can cause invalid blocks after network downtime,
a significant drop in the hash rate, or after the testnet minimum difficulty interval.
Sourcepub fn submit_old(&self) -> Option<bool>
pub fn submit_old(&self) -> Option<bool>
only relevant for long poll responses: indicates if work received prior to this response remains potentially valid (default) and should have its shares submitted; if false, the miner may wish to discard its share queue
https://en.bitcoin.it/wiki/BIP_0022#Optional:_Long_Polling
This field is not in zcashd
or the Zcash RPC reference yet.
In Zebra, submit_old
is false
when the tip block changed or max time is reached,
and true
if only the mempool transactions have changed.
Source§impl BlockTemplateResponse
impl BlockTemplateResponse
Sourcepub fn new(
capabilities: Vec<String>,
version: u32,
previous_block_hash: Hash,
block_commitments_hash: ChainHistoryBlockTxAuthCommitmentHash,
light_client_root_hash: ChainHistoryBlockTxAuthCommitmentHash,
final_sapling_root_hash: ChainHistoryBlockTxAuthCommitmentHash,
default_roots: DefaultRoots,
transactions: Vec<TransactionTemplate<NonNegative>>,
coinbase_txn: TransactionTemplate<NegativeOrZero>,
long_poll_id: LongPollId,
target: ExpandedDifficulty,
min_time: DateTime32,
mutable: Vec<String>,
nonce_range: String,
sigop_limit: u64,
size_limit: u64,
cur_time: DateTime32,
bits: CompactDifficulty,
height: u32,
max_time: DateTime32,
submit_old: Option<bool>,
) -> Self
pub fn new( capabilities: Vec<String>, version: u32, previous_block_hash: Hash, block_commitments_hash: ChainHistoryBlockTxAuthCommitmentHash, light_client_root_hash: ChainHistoryBlockTxAuthCommitmentHash, final_sapling_root_hash: ChainHistoryBlockTxAuthCommitmentHash, default_roots: DefaultRoots, transactions: Vec<TransactionTemplate<NonNegative>>, coinbase_txn: TransactionTemplate<NegativeOrZero>, long_poll_id: LongPollId, target: ExpandedDifficulty, min_time: DateTime32, mutable: Vec<String>, nonce_range: String, sigop_limit: u64, size_limit: u64, cur_time: DateTime32, bits: CompactDifficulty, height: u32, max_time: DateTime32, submit_old: Option<bool>, ) -> Self
Constructs a new BlockTemplateResponse
.
Source§impl BlockTemplateResponse
impl BlockTemplateResponse
Sourcepub fn all_capabilities() -> Vec<String>
pub fn all_capabilities() -> Vec<String>
Returns a Vec
of capabilities supported by the getblocktemplate
RPC
Trait Implementations§
Source§impl Clone for BlockTemplateResponse
impl Clone for BlockTemplateResponse
Source§fn clone(&self) -> BlockTemplateResponse
fn clone(&self) -> BlockTemplateResponse
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for BlockTemplateResponse
impl Debug for BlockTemplateResponse
Source§impl<'de> Deserialize<'de> for BlockTemplateResponse
impl<'de> Deserialize<'de> for BlockTemplateResponse
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
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Source§impl From<BlockTemplateResponse> for GetBlockTemplateResponse
impl From<BlockTemplateResponse> for GetBlockTemplateResponse
Source§fn from(template: BlockTemplateResponse) -> Self
fn from(template: BlockTemplateResponse) -> Self
Source§impl PartialEq for BlockTemplateResponse
impl PartialEq for BlockTemplateResponse
Source§impl Serialize for BlockTemplateResponse
impl Serialize for BlockTemplateResponse
impl Eq for BlockTemplateResponse
impl StructuralPartialEq for BlockTemplateResponse
Auto Trait Implementations§
impl Freeze for BlockTemplateResponse
impl RefUnwindSafe for BlockTemplateResponse
impl Send for BlockTemplateResponse
impl Sync for BlockTemplateResponse
impl Unpin for BlockTemplateResponse
impl UnwindSafe for BlockTemplateResponse
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builds.Source§fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
.tap_borrow_mut()
only in debug builds, and is erased in release
builds.Source§fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
.tap_ref()
only in debug builds, and is erased in release
builds.Source§fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
.tap_ref_mut()
only in debug builds, and is erased in release
builds.Source§fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
.tap_deref()
only in debug builds, and is erased in release
builds.