Don't answer peers with a low reputation (#9008)

* Init architecture for not answering peers with a low reputation

* Get reputation inside of RequestResponsesBehaviour::poll

* Filter reputation in RequestResponsesBehaviour

* Pass PeersetHandle to RequestResponsesBehaviour

* Add more docs

* Fix tests compilation

* Fix compiler warnings (still FIXME)

* Fix tests

* Fmt code

substrate/client/network/src/behaviour.rs

@@ -38,6 +38,7 @@ use libp2p::{
 use log::debug;
 use prost::Message;
 use sc_consensus::import_queue::{IncomingBlock, Origin};
+use sc_peerset::PeersetHandle;
 use sp_consensus::BlockOrigin;
 use sp_runtime::{
 	traits::{Block as BlockT, NumberFor},
@@ -206,6 +207,7 @@ impl<B: BlockT> Behaviour<B> {
 		light_client_request_protocol_config: request_responses::ProtocolConfig,
 		// All remaining request protocol configs.
 		mut request_response_protocols: Vec<request_responses::ProtocolConfig>,
+		peerset: PeersetHandle,
 	) -> Result<Self, request_responses::RegisterError> {
 		// Extract protocol name and add to `request_response_protocols`.
 		let block_request_protocol_name = block_request_protocol_config.name.to_string();
@@ -229,6 +231,7 @@ impl<B: BlockT> Behaviour<B> {
 			bitswap: bitswap.into(),
 			request_responses: request_responses::RequestResponsesBehaviour::new(
 				request_response_protocols.into_iter(),
+				peerset,
 			)?,
 			light_client_request_sender,
 			events: VecDeque::new(),