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swarm/: Provide additional default impls on NetworkBehaviour (#2150)

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Not all implementations of `NetworkBehaviour` need all callbacks.
We've have been adding new callbacks with default implementations
for a while now. There is no reason the initial ones cannot also
be defaulted, thus making it easier create new implementations.

Co-authored-by: Max Inden <mail@max-inden.de>
This commit is contained in:
Thomas Eizinger
2021-07-31 03:48:32 +10:00
committed by GitHub
parent 76f1fcbee3
commit ad90167042
10 changed files with 29 additions and 71 deletions
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8
swarm/src/behaviour.rs
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@ -80,7 +80,9 @@ pub trait NetworkBehaviour: Send + 'static {
/// The addresses will be tried in the order returned by this function, which means that they
/// should be ordered by decreasing likelihood of reachability. In other words, the first
/// address should be the most likely to be reachable.
fn addresses_of_peer(&mut self, peer_id: &PeerId) -> Vec<Multiaddr>;
fn addresses_of_peer(&mut self, _: &PeerId) -> Vec<Multiaddr> {
vec![]
}
/// Indicate to the behaviour that we connected to the node with the given peer id.
///
@ -88,7 +90,7 @@ pub trait NetworkBehaviour: Send + 'static {
///
/// This method is only called when the first connection to the peer is established, preceded by
/// [`inject_connection_established`](NetworkBehaviour::inject_connection_established).
fn inject_connected(&mut self, peer_id: &PeerId);
fn inject_connected(&mut self, _: &PeerId) { }
/// Indicates to the behaviour that we disconnected from the node with the given peer id.
///
@ -97,7 +99,7 @@ pub trait NetworkBehaviour: Send + 'static {
///
/// This method is only called when the last established connection to the peer is closed,
/// preceded by [`inject_connection_closed`](NetworkBehaviour::inject_connection_closed).
fn inject_disconnected(&mut self, peer_id: &PeerId);
fn inject_disconnected(&mut self, _: &PeerId) { }
/// Informs the behaviour about a newly established connection to a peer.
fn inject_connection_established(&mut self, _: &PeerId, _: &ConnectionId, _: &ConnectedPoint)