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swarm/: Enable advanced dialing requests (#2317)

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Enable advanced dialing requests both on `Swarm` and via
`NetworkBehaviourAction`. Users can now trigger a dial with a specific
set of addresses, optionally extended via
`NetworkBehaviour::addresses_of_peer`. In addition the whole process is
now modelled in a type safe way via the builder pattern.

Example of a `NetworkBehaviour` requesting a dial to a specific peer
with a set of addresses additionally extended through
`NetworkBehaviour::addresses_of_peer`:

```rust
NetworkBehaviourAction::Dial {
    opts: DialOpts::peer_id(peer_id)
              .condition(PeerCondition::Always)
              .addresses(addresses)
              .extend_addresses_through_behaviour()
              .build(),
    handler,
}
```

Example of a user requesting a dial to an unknown peer with a single
address via `Swarm`:

```rust
swarm1.dial(
    DialOpts::unknown_peer_id()
        .address(addr2.clone())
        .build()
)
```
This commit is contained in:
Max Inden
2021-11-15 14:17:23 +01:00
committed by GitHub
parent 144dc12fb6
commit 220f84a97f
53 changed files with 680 additions and 414 deletions
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6
protocols/relay/examples/relay.rs
View File

@ -65,7 +65,7 @@ use libp2p::relay::{Relay, RelayConfig};
use libp2p::swarm::SwarmEvent;
use libp2p::tcp::TcpConfig;
use libp2p::Transport;
use libp2p::{core::upgrade, identity::ed25519, ping};
use libp2p::{core::upgrade, identity::ed25519, ping, Multiaddr};
use libp2p::{identity, NetworkBehaviour, PeerId, Swarm};
use std::error::Error;
use std::task::{Context, Poll};
@ -129,8 +129,8 @@ fn main() -> Result<(), Box<dyn Error>> {
println!("starting client listener via relay on {}", &relay_address);
}
Mode::ClientDial => {
let client_listen_address = get_client_listen_address(&opt);
swarm.dial_addr(client_listen_address.parse()?)?;
let client_listen_address: Multiaddr = get_client_listen_address(&opt).parse()?;
swarm.dial(client_listen_address.clone())?;
println!("starting as client dialer on {}", client_listen_address);
}
}