{core,swarm}/: Don't require Transport: Clone and take &mut (#2529)

Previously `libp2p-swarm` required a `Transport` to be `Clone`. Methods
on `Transport`, e.g. `Transport::dial` would take ownership, requiring
e.g. a `Clone::clone` before calling `Transport::dial`.

The requirement of `Transport` to be `Clone` is no longer needed in
`libp2p-swarm`. E.g.  concurrent dialing can be done without a clone per
dial.

This commit removes the requirement of `Clone` for `Transport` in
`libp2p-swarm`. As a follow-up methods on `Transport` no longer take
ownership, but instead a mutable reference (`&mut self`).

On the one hand this simplifies `libp2p-swarm`, on the other it
simplifies implementations of `Transport`.
This commit is contained in:
Max Inden
2022-04-06 20:23:16 +02:00
committed by GitHub
parent 7a1147877a
commit 2ad905f35a
82 changed files with 751 additions and 449 deletions

View File

@ -75,22 +75,28 @@ where
type ListenerUpgrade = BandwidthFuture<TInner::ListenerUpgrade>;
type Dial = BandwidthFuture<TInner::Dial>;
fn listen_on(self, addr: Multiaddr) -> Result<Self::Listener, TransportError<Self::Error>> {
let sinks = self.sinks;
fn listen_on(
&mut self,
addr: Multiaddr,
) -> Result<Self::Listener, TransportError<Self::Error>> {
let sinks = self.sinks.clone();
self.inner
.listen_on(addr)
.map(move |inner| BandwidthListener { inner, sinks })
}
fn dial(self, addr: Multiaddr) -> Result<Self::Dial, TransportError<Self::Error>> {
let sinks = self.sinks;
fn dial(&mut self, addr: Multiaddr) -> Result<Self::Dial, TransportError<Self::Error>> {
let sinks = self.sinks.clone();
self.inner
.dial(addr)
.map(move |fut| BandwidthFuture { inner: fut, sinks })
}
fn dial_as_listener(self, addr: Multiaddr) -> Result<Self::Dial, TransportError<Self::Error>> {
let sinks = self.sinks;
fn dial_as_listener(
&mut self,
addr: Multiaddr,
) -> Result<Self::Dial, TransportError<Self::Error>> {
let sinks = self.sinks.clone();
self.inner
.dial_as_listener(addr)
.map(move |fut| BandwidthFuture { inner: fut, sinks })