Probability for a Kademlia query to return in less than 100 milliseconds
is low, thus increasing the lower bucket to improve accuracy within the
higher ranges.
Implement the libp2p rendezvous protocol.
> A lightweight mechanism for generalized peer discovery. It can be used for
bootstrap purposes, real time peer discovery, application specific routing, and
so on.
Co-authored-by: rishflab <rishflab@hotmail.com>
Co-authored-by: Daniel Karzel <daniel@comit.network>
Require `NetworkBehaviourAction::{DialPeer,DialAddress}` to contain a
`ProtocolsHandler`. This allows a behaviour to attach custom state to its
handler. The behaviour would no longer need to track this state separately
during connection establishment, thus reducing state required in a behaviour.
E.g. in the case of `libp2p-kad` the behaviour can include a `GetRecord` request
in its handler, or e.g. in the case of `libp2p-request-response` the behaviour
can include the first request in the handler.
Return `ProtocolsHandler` on connection error and close. This allows a behaviour
to extract its custom state previously included in the handler on connection
failure and connection closing. E.g. in the case of `libp2p-kad` the behaviour
could extract the attached `GetRecord` from the handler of the failed connection
and then start another connection attempt with a new handler with the same
`GetRecord` or bubble up an error to the user.
Co-authored-by: Thomas Eizinger <thomas@eizinger.io>
With f2905c07f1246c3c3fdc1cde95f7e9c5c1c9b01a the secp256k1 feature is
disabled by default. Instead of enabling it in the dev-dependency,
simply use ed25519.
Implement ProtocolsHandler on either::Either representing either of two
ProtocolsHandler implementations.
Co-authored-by: Thomas Eizinger <thomas@eizinger.io>
Basic file sharing application with peers either providing or locating
and getting files by name.
While obviously showcasing how to build a basic file sharing
application, the actual goal of this example is **to show how to
integrate rust-libp2p into a larger application**.
Architectural properties
- Clean clonable async/await interface ([`Client`]) to interact with the
network layer.
- Single task driving the network layer, no locks required.
- Removes the `Swarm` type alias, renaming `ExpandedSwarm` to `Swarm`.
- Remove `TInEvent`, `TOutEvent` and `THandler` trait parameters on
`Swarm`, instead deriving them through `TBehaviour`. Move derive logic
to separate type aliases.
- Simplify trait bounds on `Swarm` main `impl` and `Stream` `impl`.
With 45f07bf8639fd9056e4ffe52298ca113a0308951 `Network::dial` accepts a
`Multiaddr` with a `PeerId`. With that in mind the doc comment on
`NetworkBehaviourAction::DialAddress` is outdated.
Unless restricted by orphan rules, implementing `From` is superior
because it implies `Into` but leaves the choice to the user, which
one to use. Especially for errors, `From` is convenient because that
is what `?` builds on.
Co-authored-by: Max Inden <mail@max-inden.de>
Signed-off-by: Emil Majchrzak <majchrzakemil@gitlab.com>
Co-authored-by: Emil Majchrzak <majchrzakemil@gitlab.com>
Co-authored-by: Max Inden <mail@max-inden.de>
This will allow capturing variables in these closures so that we can
make these functions aware of the forkId (necessary for altair).
Co-authored-by: Max Inden <mail@max-inden.de>
Don't close connection if ping protocol is unsupported by remote. Previously, a
failed protocol negotation for ping caused a force close of the connection. As a
result, all nodes in a network had to support ping. To allow networks where some
nodes don't support ping, we now emit `PingFailure::Unsupported` once for every
connection on which ping is not supported.
Co-authored-by: Max Inden <mail@max-inden.de>
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>
Co-authored-by: István Zólyomi <istvan.zolyomi@iop-ventures.com>
Co-authored-by: Ruben De Smet <ruben.de.smet@rubdos.be>
Co-authored-by: Max Inden <mail@max-inden.de>
- Change `PublicKey::into_protobuf_encoding` to
`PublicKey::to_protobuf_encoding`.
- Change `PublicKey::into_peer_id` to `PublicKey::to_peer_id`.
- Change `PeerId::from_public_key(PublicKey)` to
`PeerId::from_public_key(&PublicKey)`.
- Add `From<&PublicKey> for PeerId`.
Co-authored-by: Max Inden <mail@max-inden.de>
* Fix needless question mark operator
* Don't convert from u64 to u64
LocalStreamId is already a u64, no need to convert.
* Don't use `.into()` to convert to the same type
* Don't specify lifetime if it can be inferred
* Use `vec!` macro if we immediately push to it
This creates the vector with the appropriate capacity.
* Don't index array when taking a reference is enough
Co-authored-by: Max Inden <mail@max-inden.de>
Given the following scenario:
1. Remote peer X connects and is added to `connected_peers`.
2. Remote peer X opens a Kademlia substream and thus confirms that it supports
the Kademlia protocol.
3. Remote peer X is added to the routing table as `Connected`.
4. Remote peer X disconnects and is thus marked as `Disconnected` in the routing
table.
5. Remote peer Y connects and is added to `connected_peers`.
6. Remote peer X re-connects and is added to `connected_peers`.
7. Remote peer Y opens a Kademlia substream and thus confirms that it supports
the Kademlia protocol.
8. Remote peer Y is added to the routing table. Given that the bucket is already
full the call to `entry.insert` returns `kbucket::InsertResult::Pending {
disconnected }` where disconnected is peer X.
While peer X is in `connected_peers` it has not yet (re-) confirmed that it
supports the Kademlia routing protocol and thus is still tracked as
`Disconnected` in the routing table. The `debug_assert` removed in this pull
request does not capture this scenario.
