* network: Use "one shot" protocol handler.
Add two new `NetworkBehaviour`s, one handling remote block requests
and another one to handle light client requests (both local and from
remote). The change is motivated by the desire to use multiple
substreams of a single connection for different protocols. To achieve
this, libp2p's `OneShotHandler` is used as a protocol handler in each
behaviour. It will open a fresh substream for the duration of the
request and close it afterwards. For block requests, we currently only
handle incoming requests from remote and tests are missing. For light
client handling we support incoming requests from remote and also
ported a substantial amount of functionality over from
`light_dispatch.rs` (including several tests). However the result lacks
in at least two aspects:
(1) We require external updates w.r.t. the best block per peer and
currently nothing updates this information.
(2) We carry a lot of peer-related state around.
Both aspects could be simplified by externalising peer selection and
just requiring a specific peer ID where the request should be sent to.
We still have to maintain some peer related state due to the way
libp2p's swarm and network behaviour work (e.g. we must make sure to
always issue `NetworkBehaviourAction::SendEvent`s to peers we are
connected to, otherwise the actions die a silent death.
Another change implemented here is the use of protocol buffers as the
encoding for network messages. Certain individual fields of messages
are still SCALE encoded. There has been some discussion about this
in another PR (https://github.com/paritytech/substrate/pull/3452), so
far without resolution.
* Uncomment `Behaviour::light_client_request`.
* Add license headers.
* Pause Kademlia if too many connections
* Fix test
* Update client/network/src/discovery.rs
Co-Authored-By: Toralf Wittner <tw@dtex.org>
* Change the limit
Co-authored-by: Toralf Wittner <tw@dtex.org>
* Entirely update substrate-telemetry to futures 0.3
* Add a Closed error
* Update to libp2p 0.14
* More work
* More work
* More work
* More work
* Fix warnings
* Remove unwrap()
* Work on tests fixing
* Fix network tests
* Fix external network tests
* Update libp2p and restore Yamux in discovery test
* Ignore DNS if initializatio nfails
* Restore variables ordering
* Forgot browser-utils
* Fix downfall after merge
* Fix tests
* Adding script for rename, could be applicable for nodes on top of it, too
* add stderr and gitlab ci features
* apply script
* fix now minor details in expected stderr
* Update the Cargo.lock
* fix name: sc-transaction -> sc-tracing
* fix rename in script, too
* Adding first rough ouline of the repository structure
* Remove old CI stuff
* add title
* formatting fixes
* move node-exits job's script to scripts dir
* Move docs into subdir
* move to bin
* move maintainence scripts, configs and helpers into its own dir
* add .local to ignore
* move core->client
* start up 'test' area
* move test client
* move test runtime
* make test move compile
* Add dependencies rule enforcement.
* Fix indexing.
* Update docs to reflect latest changes
* Moving /srml->/paint
* update docs
* move client/sr-* -> primitives/
* clean old readme
* remove old broken code in rhd
* update lock
* Step 1.
* starting to untangle client
* Fix after merge.
* start splitting out client interfaces
* move children and blockchain interfaces
* Move trie and state-machine to primitives.
* Fix WASM builds.
* fixing broken imports
* more interface moves
* move backend and light to interfaces
* move CallExecutor
* move cli off client
* moving around more interfaces
* re-add consensus crates into the mix
* fix subkey path
* relieve client from executor
* starting to pull out client from grandpa
* move is_decendent_of out of client
* grandpa still depends on client directly
* lemme tests pass
* rename srml->paint
* Make it compile.
* rename interfaces->client-api
* Move keyring to primitives.
* fixup libp2p dep
* fix broken use
* allow dependency enforcement to fail
* move fork-tree
* Moving wasm-builder
* make env
* move build-script-utils
* fixup broken crate depdencies and names
* fix imports for authority discovery
* fix typo
* update cargo.lock
* fixing imports
* Fix paths and add missing crates
* re-add missing crates
Robert Habermeier