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Full support for multiple connections per peer in libp2p-swarm. (#1519)

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* [libp2p-swarm] Make the multiple connections per peer first-class.

This commit makes the notion of multiple connections per peer
first-class in the API of libp2p-swarm, introducing the new
callbacks `inject_connection_established` and
`inject_connection_closed`. The `endpoint` parameter from
`inject_connected` and `inject_disconnected` is removed,
since the first connection to open may not be the last
connection to close, i.e. it cannot be guaranteed,
as was previously the case, that the endpoints passed
to these callbacks match up.

* Have identify track all addresses.

So that identify requests can be answered with the correct
observed address of the connection on which the request
arrives.

* Cleanup

* Cleanup

* Improve the `Peer` state API.

* Remove connection ID from `SwarmEvent::Dialing`.

* Mark `DialPeerCondition` non-exhaustive.

* Re-encapsulate `NetworkConfig`.

To retain the possibility of not re-exposing all
network configuration choices, thereby providing
a more convenient API on the \`SwarmBuilder\`.

* Rework Swarm::dial API.

* Update CHANGELOG.

* Doc formatting tweaks.
This commit is contained in:
Roman Borschel
2020-03-31 15:41:13 +02:00
committed by GitHub
parent bc455038fc
commit be970466b3
18 changed files with 491 additions and 239 deletions
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10
protocols/gossipsub/src/behaviour.rs
View File

@ -27,7 +27,7 @@ use crate::protocol::{
};
use crate::topic::{Topic, TopicHash};
use futures::prelude::*;
use libp2p_core::{ConnectedPoint, Multiaddr, PeerId, connection::ConnectionId};
use libp2p_core::{Multiaddr, PeerId, connection::ConnectionId};
use libp2p_swarm::{
NetworkBehaviour,
NetworkBehaviourAction,
@ -1012,7 +1012,7 @@ impl NetworkBehaviour for Gossipsub {
Vec::new()
}
fn inject_connected(&mut self, id: PeerId, _: ConnectedPoint) {
fn inject_connected(&mut self, id: &PeerId) {
info!("New peer connected: {:?}", id);
// We need to send our subscriptions to the newly-connected node.
let mut subscriptions = vec![];
@ -1040,7 +1040,7 @@ impl NetworkBehaviour for Gossipsub {
self.peer_topics.insert(id.clone(), Vec::new());
}
fn inject_disconnected(&mut self, id: &PeerId, _: ConnectedPoint) {
fn inject_disconnected(&mut self, id: &PeerId) {
// remove from mesh, topic_peers, peer_topic and fanout
debug!("Peer disconnected: {:?}", id);
{
@ -1164,8 +1164,8 @@ impl NetworkBehaviour for Gossipsub {
NetworkBehaviourAction::DialAddress { address } => {
return Poll::Ready(NetworkBehaviourAction::DialAddress { address });
}
NetworkBehaviourAction::DialPeer { peer_id } => {
return Poll::Ready(NetworkBehaviourAction::DialPeer { peer_id });
NetworkBehaviourAction::DialPeer { peer_id, condition } => {
return Poll::Ready(NetworkBehaviourAction::DialPeer { peer_id, condition });
}
NetworkBehaviourAction::ReportObservedAddr { address } => {
return Poll::Ready(NetworkBehaviourAction::ReportObservedAddr { address });