Struct ChainSelector

pub struct ChainSelector { /* private fields */ }

Available on non-WebAssembly only.

A p2p driver that attempts to connect with multiple peers, ask which chain are them following and download and verify the headers, not the actual blocks. This is the first part of a loger IBD pipeline. The actual blocks should be downloaded by a SyncPeer.

Trait Implementations

impl Clone for ChainSelector

fn clone(&self) -> ChainSelector

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ChainSelector

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ChainSelector

fn default() -> ChainSelector

Returns the “default value” for a type.

impl NodeContext for ChainSelector

const REQUEST_TIMEOUT: u64 = 60u64

How long we wait for a peer to respond to our request

const TRY_NEW_CONNECTION: u64 = 10u64

Attempt to open a new connection (if needed) every TRY_NEW_CONNECTION seconds

fn get_required_services(&self) -> ServiceFlags

const MAX_OUTGOING_PEERS: usize = 10usize

Max number of simultaneous connections we initiates we are willing to hold

const ASK_FOR_PEERS_INTERVAL: u64 = 3_600u64

We ask for peers every ASK_FOR_PEERS_INTERVAL seconds

const PEER_DB_DUMP_INTERVAL: u64 = 30u64

Save our database of peers every PEER_DB_DUMP_INTERVAL seconds

const ASSUME_STALE: u64 = 900u64

If ASSUME_STALE seconds passed since our last tip update, treat it as stale

const IBD_REQUEST_BLOCKS_AGAIN: u64 = 30u64

While on IBD, if we’ve been without blocks for this long, ask for headers again

const BROADCAST_DELAY: u64 = 30u64

How often we broadcast transactions

const MAX_INFLIGHT_REQUESTS: usize = 1_000usize

Max number of simultaneous inflight requests we allow

const FEELER_INTERVAL: u64 = 30u64

Interval at which we open new feeler connections

const ADDRESS_REARRANGE_INTERVAL: u64 = 3_600u64

Interval at which we rearrange our addresses

const BAN_TIME: u64 = 86_400u64

How long we ban a peer for

const BLOCK_CHECK_INTERVAL: u64 = 300u64

How often we check if we haven’t missed a block

const SEND_ADDRESSES_INTERVAL: u64 = 3_600u64

How often we send our addresses to our peers

const CONNECTION_TIMEOUT: u64 = 30u64

How long should we wait for a peer to respond our connection request

const BLOCKS_PER_GETDATA: usize = 4usize

How many blocks we can ask in the same request

const MAX_CONCURRENT_GETDATA: usize = 2usize

How many concurrent GETDATA packages we can send at the same time