add a bunch of blob coupling boiler plate, add a blobs by root request

beacon_node/beacon_chain/src/beacon_chain.rs

@@ -6,7 +6,6 @@ use crate::attestation_verification::{
 use crate::attester_cache::{AttesterCache, AttesterCacheKey};
 use crate::beacon_proposer_cache::compute_proposer_duties_from_head;
 use crate::beacon_proposer_cache::BeaconProposerCache;
-use crate::blob_verification::{BlobError, VerifiedBlobsSidecar};
 use crate::block_times_cache::BlockTimesCache;
 use crate::block_verification::{
     check_block_is_finalized_descendant, check_block_relevancy, get_block_root,
@@ -103,11 +102,12 @@ use task_executor::{ShutdownReason, TaskExecutor};
 use tree_hash::TreeHash;
 use types::beacon_state::CloneConfig;
 use types::*;
+use types::signed_block_and_blobs::BlockMaybeBlobs;
 
 pub type ForkChoiceError = fork_choice::Error<crate::ForkChoiceStoreError>;
 
 /// Alias to appease clippy.
-type HashBlockTuple<E> = (Hash256, Arc<SignedBeaconBlock<E>>);
+type HashBlockTuple<E> = (Hash256, BlockMaybeBlobs<E>);
 
 /// The time-out before failure during an operation to take a read/write RwLock on the block
 /// processing cache.
@@ -1784,23 +1784,6 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         })
     }
 
-    /// Accepts some `BlobsSidecar` received over from the network and attempts to verify it,
-    /// returning `Ok(_)` if it is valid to be (re)broadcast on the gossip network.
-    pub fn verify_blobs_sidecar_for_gossip<'a>(
-        &self,
-        blobs_sidecar: &'a BlobsSidecar<T::EthSpec>,
-    ) -> Result<VerifiedBlobsSidecar<'a, T>, BlobError> {
-        metrics::inc_counter(&metrics::BLOBS_SIDECAR_PROCESSING_REQUESTS);
-        let _timer = metrics::start_timer(&metrics::BLOBS_SIDECAR_GOSSIP_VERIFICATION_TIMES);
-        VerifiedBlobsSidecar::verify(blobs_sidecar, self).map(|v| {
-            if let Some(_event_handler) = self.event_handler.as_ref() {
-                // TODO: Handle sse events
-            }
-            metrics::inc_counter(&metrics::BLOBS_SIDECAR_PROCESSING_SUCCESSES);
-            v
-        })
-    }
-
     /// Accepts some attestation-type object and attempts to verify it in the context of fork
     /// choice. If it is valid it is applied to `self.fork_choice`.
     ///
@@ -2215,7 +2198,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     /// This method is potentially long-running and should not run on the core executor.
     pub fn filter_chain_segment(
         self: &Arc<Self>,
-        chain_segment: Vec<Arc<SignedBeaconBlock<T::EthSpec>>>,
+        chain_segment: Vec<BlockMaybeBlobs<T::EthSpec>>,
     ) -> Result<Vec<HashBlockTuple<T::EthSpec>>, ChainSegmentResult<T::EthSpec>> {
         // This function will never import any blocks.
         let imported_blocks = 0;
@@ -2321,7 +2304,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     /// `Self::process_block`.
     pub async fn process_chain_segment(
         self: &Arc<Self>,
-        chain_segment: Vec<Arc<SignedBeaconBlock<T::EthSpec>>>,
+        chain_segment: Vec<BlockMaybeBlobs<T::EthSpec>>,
         count_unrealized: CountUnrealized,
     ) -> ChainSegmentResult<T::EthSpec> {
         let mut imported_blocks = 0;
@@ -2343,7 +2326,10 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             }
         };
 
-        while let Some((_root, block)) = filtered_chain_segment.first() {
+        while let Some((_root, block_wrapper)) = filtered_chain_segment.first() {
+
+            let block: &SignedBeaconBlock<T::EthSpec> = block_wrapper.block();
+
             // Determine the epoch of the first block in the remaining segment.
             let start_epoch = block.slot().epoch(T::EthSpec::slots_per_epoch());
 
@@ -2354,7 +2340,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
             let last_index = filtered_chain_segment
                 .iter()
                 .position(|(_root, block)| {
-                    block.slot().epoch(T::EthSpec::slots_per_epoch()) > start_epoch
+                    block.block().slot().epoch(T::EthSpec::slots_per_epoch()) > start_epoch
                 })
                 .unwrap_or(filtered_chain_segment.len());
 
@@ -2420,17 +2406,17 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     /// Returns an `Err` if the given block was invalid, or an error was encountered during
     pub async fn verify_block_for_gossip(
         self: &Arc<Self>,
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block_wrapper: BlockMaybeBlobs<T::EthSpec>,
     ) -> Result<GossipVerifiedBlock<T>, BlockError<T::EthSpec>> {
         let chain = self.clone();
         self.task_executor
             .clone()
             .spawn_blocking_handle(
                 move || {
-                    let slot = block.slot();
+                    let slot = block_wrapper.block().slot();
-                    let graffiti_string = block.message().body().graffiti().as_utf8_lossy();
+                    let graffiti_string = block_wrapper.block().message().body().graffiti().as_utf8_lossy();
 
-                    match GossipVerifiedBlock::new(block, &chain) {
+                    match GossipVerifiedBlock::new(block_wrapper, &chain) {
                         Ok(verified) => {
                             debug!(
                                 chain.log,
@@ -2486,9 +2472,6 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         // Increment the Prometheus counter for block processing requests.
         metrics::inc_counter(&metrics::BLOCK_PROCESSING_REQUESTS);
 
-        // Clone the block so we can provide it to the event handler.
-        let block = unverified_block.block().clone();
-
         // A small closure to group the verification and import errors.
         let chain = self.clone();
         let import_block = async move {
@@ -2499,6 +2482,8 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                 .await
         };
 
+        let slot = unverified_block.block().slot();
+
         // Verify and import the block.
         match import_block.await {
             // The block was successfully verified and imported. Yay.
@@ -2507,7 +2492,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
                     self.log,
                     "Beacon block imported";
                     "block_root" => ?block_root,
-                    "block_slot" => %block.slot(),
+                    "block_slot" => slot,
                 );
 
                 // Increment the Prometheus counter for block processing successes.
@@ -2633,7 +2618,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
     #[allow(clippy::too_many_arguments)]
     fn import_block(
         &self,
-        signed_block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block_wrapper: BlockMaybeBlobs<T::EthSpec>,
         block_root: Hash256,
         mut state: BeaconState<T::EthSpec>,
         confirmed_state_roots: Vec<Hash256>,
@@ -2642,6 +2627,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
         parent_block: SignedBlindedBeaconBlock<T::EthSpec>,
         parent_eth1_finalization_data: Eth1FinalizationData,
     ) -> Result<Hash256, BlockError<T::EthSpec>> {
+        let signed_block = block_wrapper.block();
         let current_slot = self.slot()?;
         let current_epoch = current_slot.epoch(T::EthSpec::slots_per_epoch());
 

beacon_node/beacon_chain/src/blob_verification.rs

@@ -1,3 +1,4 @@
+use std::sync::Arc;
 use derivative::Derivative;
 use slot_clock::SlotClock;
 
@@ -79,19 +80,7 @@ impl From<BeaconStateError> for BlobError {
     }
 }
 
-/// A wrapper around a `BlobsSidecar` that indicates it has been verified w.r.t the corresponding
+pub fn validate_blob_for_gossip<T: BeaconChainTypes>(blob_sidecar: &BlobsSidecar<T::EthSpec>, chain: &Arc<BeaconChain<T>>) -> Result<(), BlobError>{
-/// `SignedBeaconBlock`.
-#[derive(Derivative)]
-#[derivative(Debug(bound = "T: BeaconChainTypes"))]
-pub struct VerifiedBlobsSidecar<'a, T: BeaconChainTypes> {
-    pub blob_sidecar: &'a BlobsSidecar<T::EthSpec>,
-}
-
-impl<'a, T: BeaconChainTypes> VerifiedBlobsSidecar<'a, T> {
-    pub fn verify(
-        blob_sidecar: &'a BlobsSidecar<T::EthSpec>,
-        chain: &BeaconChain<T>,
-    ) -> Result<Self, BlobError> {
     let blob_slot = blob_sidecar.beacon_block_slot;
     // Do not gossip or process blobs from future or past slots.
     let latest_permissible_slot = chain
@@ -129,8 +118,7 @@ impl<'a, T: BeaconChainTypes> VerifiedBlobsSidecar<'a, T> {
         return Err(BlobError::InvalidKZGCommitment);
     }
 
-        // TODO: Check that we have not already received a sidecar with a valid signature for this slot.
+    // TODO: `validate_blobs_sidecar`
-
+    Ok(())
-        Ok(Self { blob_sidecar })
-    }
 }
+

beacon_node/beacon_chain/src/block_verification.rs

@@ -83,12 +83,14 @@ use std::time::Duration;
 use store::{Error as DBError, HotStateSummary, KeyValueStore, StoreOp};
 use task_executor::JoinHandle;
 use tree_hash::TreeHash;
-use types::ExecPayload;
+use types::{BlobsSidecar, ExecPayload, SignedBeaconBlockAndBlobsSidecar};
 use types::{
     BeaconBlockRef, BeaconState, BeaconStateError, BlindedPayload, ChainSpec, CloneConfig, Epoch,
     EthSpec, ExecutionBlockHash, Hash256, InconsistentFork, PublicKey, PublicKeyBytes,
     RelativeEpoch, SignedBeaconBlock, SignedBeaconBlockHeader, Slot,
 };
+use types::signed_block_and_blobs::BlockMaybeBlobs;
+use crate::blob_verification::validate_blob_for_gossip;
 
 pub const POS_PANDA_BANNER: &str = r#"
     ,,,         ,,,                                               ,,,         ,,,
@@ -135,7 +137,7 @@ pub enum BlockError<T: EthSpec> {
     ///
     /// It's unclear if this block is valid, but it cannot be processed without already knowing
     /// its parent.
-    ParentUnknown(Arc<SignedBeaconBlock<T>>),
+    ParentUnknown(BlockMaybeBlobs<T>),
     /// The block skips too many slots and is a DoS risk.
     TooManySkippedSlots { parent_slot: Slot, block_slot: Slot },
     /// The block slot is greater than the present slot.
@@ -524,7 +526,7 @@ fn process_block_slash_info<T: BeaconChainTypes>(
 /// The given `chain_segment` must contain only blocks from the same epoch, otherwise an error
 /// will be returned.
 pub fn signature_verify_chain_segment<T: BeaconChainTypes>(
-    mut chain_segment: Vec<(Hash256, Arc<SignedBeaconBlock<T::EthSpec>>)>,
+    mut chain_segment: Vec<(Hash256, BlockMaybeBlobs<T::EthSpec>)>,
     chain: &BeaconChain<T>,
 ) -> Result<Vec<SignatureVerifiedBlock<T>>, BlockError<T::EthSpec>> {
     if chain_segment.is_empty() {
@@ -589,7 +591,7 @@ pub fn signature_verify_chain_segment<T: BeaconChainTypes>(
 #[derive(Derivative)]
 #[derivative(Debug(bound = "T: BeaconChainTypes"))]
 pub struct GossipVerifiedBlock<T: BeaconChainTypes> {
-    pub block: Arc<SignedBeaconBlock<T::EthSpec>>,
+    pub block: BlockMaybeBlobs<T::EthSpec>,
     pub block_root: Hash256,
     parent: Option<PreProcessingSnapshot<T::EthSpec>>,
     consensus_context: ConsensusContext<T::EthSpec>,
@@ -598,7 +600,7 @@ pub struct GossipVerifiedBlock<T: BeaconChainTypes> {
 /// A wrapper around a `SignedBeaconBlock` that indicates that all signatures (except the deposit
 /// signatures) have been verified.
 pub struct SignatureVerifiedBlock<T: BeaconChainTypes> {
-    block: Arc<SignedBeaconBlock<T::EthSpec>>,
+    block: BlockMaybeBlobs<T::EthSpec>,
     block_root: Hash256,
     parent: Option<PreProcessingSnapshot<T::EthSpec>>,
     consensus_context: ConsensusContext<T::EthSpec>,
@@ -620,7 +622,7 @@ type PayloadVerificationHandle<E> =
 /// due to finality or some other event. A `ExecutionPendingBlock` should be imported into the
 /// `BeaconChain` immediately after it is instantiated.
 pub struct ExecutionPendingBlock<T: BeaconChainTypes> {
-    pub block: Arc<SignedBeaconBlock<T::EthSpec>>,
+    pub block: BlockMaybeBlobs<T::EthSpec>,
     pub block_root: Hash256,
     pub state: BeaconState<T::EthSpec>,
     pub parent_block: SignedBeaconBlock<T::EthSpec, BlindedPayload<T::EthSpec>>,
@@ -665,7 +667,7 @@ impl<T: BeaconChainTypes> GossipVerifiedBlock<T> {
     ///
     /// Returns an error if the block is invalid, or if the block was unable to be verified.
     pub fn new(
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockError<T::EthSpec>> {
         // If the block is valid for gossip we don't supply it to the slasher here because
@@ -680,9 +682,10 @@ impl<T: BeaconChainTypes> GossipVerifiedBlock<T> {
 
     /// As for new, but doesn't pass the block to the slasher.
     fn new_without_slasher_checks(
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block_wrapper: BlockMaybeBlobs<T::EthSpec>,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockError<T::EthSpec>> {
+        let block = block_wrapper.block();
         // Ensure the block is the correct structure for the fork at `block.slot()`.
         block
             .fork_name(&chain.spec)
@@ -876,13 +879,17 @@ impl<T: BeaconChainTypes> GossipVerifiedBlock<T> {
         // Validate the block's execution_payload (if any).
         validate_execution_payload_for_gossip(&parent_block, block.message(), chain)?;
 
+        if let Some(blobs_sidecar) = block_wrapper.blobs() {
+            validate_blob_for_gossip(blobs_sidecar, chain)?;
+        }
+
         // Having checked the proposer index and the block root we can cache them.
         let consensus_context = ConsensusContext::new(block.slot())
             .set_current_block_root(block_root)
             .set_proposer_index(block.message().proposer_index());
 
         Ok(Self {
-            block,
+            block: block_wrapper,
             block_root,
             parent,
             consensus_context,
@@ -917,7 +924,7 @@ impl<T: BeaconChainTypes> SignatureVerifiedBlock<T> {
     ///
     /// Returns an error if the block is invalid, or if the block was unable to be verified.
     pub fn new(
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         block_root: Hash256,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockError<T::EthSpec>> {
@@ -963,7 +970,7 @@ impl<T: BeaconChainTypes> SignatureVerifiedBlock<T> {
 
     /// As for `new` above but producing `BlockSlashInfo`.
     pub fn check_slashable(
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         block_root: Hash256,
         chain: &BeaconChain<T>,
     ) -> Result<Self, BlockSlashInfo<BlockError<T::EthSpec>>> {
@@ -1057,7 +1064,7 @@ impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for SignatureVerifiedBloc
     }
 }
 
-impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for Arc<SignedBeaconBlock<T::EthSpec>> {
+impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for BlockMaybeBlobs<T::EthSpec> {
     /// Verifies the `SignedBeaconBlock` by first transforming it into a `SignatureVerifiedBlock`
     /// and then using that implementation of `IntoExecutionPendingBlock` to complete verification.
     fn into_execution_pending_block_slashable(
@@ -1074,7 +1081,10 @@ impl<T: BeaconChainTypes> IntoExecutionPendingBlock<T> for Arc<SignedBeaconBlock
     }
 
     fn block(&self) -> &SignedBeaconBlock<T::EthSpec> {
-        self
+        match self {
+            Self::Block(block) => block,
+            Self::BlockAndBlobs(block) => &block.beacon_block,
+        }
     }
 }
 
@@ -1087,12 +1097,14 @@ impl<T: BeaconChainTypes> ExecutionPendingBlock<T> {
     ///
     /// Returns an error if the block is invalid, or if the block was unable to be verified.
     pub fn from_signature_verified_components(
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block_wrapper: BlockMaybeBlobs<T::EthSpec>,
         block_root: Hash256,
         parent: PreProcessingSnapshot<T::EthSpec>,
         mut consensus_context: ConsensusContext<T::EthSpec>,
         chain: &Arc<BeaconChain<T>>,
     ) -> Result<Self, BlockError<T::EthSpec>> {
+        let block = block_wrapper.block();
+
         if let Some(parent) = chain
             .canonical_head
             .fork_choice_read_lock()
@@ -1116,7 +1128,7 @@ impl<T: BeaconChainTypes> ExecutionPendingBlock<T> {
             //  because it will revert finalization. Note that the finalized block is stored in fork
             //  choice, so we will not reject any child of the finalized block (this is relevant during
             //  genesis).
-            return Err(BlockError::ParentUnknown(block));
+            return Err(BlockError::ParentUnknown(block_wrapper));
         }
 
         // Reject any block that exceeds our limit on skipped slots.
@@ -1532,7 +1544,8 @@ pub fn check_block_is_finalized_descendant<T: BeaconChainTypes>(
                 block_parent_root: block.parent_root(),
             })
         } else {
-            Err(BlockError::ParentUnknown(block.clone()))
+            //FIXME(sean) does this matter if it only returns a block?
+            Err(BlockError::ParentUnknown(BlockMaybeBlobs::Block(block.clone())))
         }
     }
 }
@@ -1624,15 +1637,16 @@ fn verify_parent_block_is_known<T: BeaconChainTypes>(
 #[allow(clippy::type_complexity)]
 fn load_parent<T: BeaconChainTypes>(
     block_root: Hash256,
-    block: Arc<SignedBeaconBlock<T::EthSpec>>,
+    block_wrapper: BlockMaybeBlobs<T::EthSpec>,
     chain: &BeaconChain<T>,
 ) -> Result<
     (
         PreProcessingSnapshot<T::EthSpec>,
-        Arc<SignedBeaconBlock<T::EthSpec>>,
+        BlockMaybeBlobs<T::EthSpec>,
     ),
     BlockError<T::EthSpec>,
 > {
+    let block = block_wrapper.block();
     let spec = &chain.spec;
 
     // Reject any block if its parent is not known to fork choice.
@@ -1650,7 +1664,7 @@ fn load_parent<T: BeaconChainTypes>(
         .fork_choice_read_lock()
         .contains_block(&block.parent_root())
     {
-        return Err(BlockError::ParentUnknown(block));
+        return Err(BlockError::ParentUnknown(block_wrapper));
     }
 
     let block_delay = chain
@@ -1689,7 +1703,7 @@ fn load_parent<T: BeaconChainTypes>(
                 "block_delay" => ?block_delay,
             );
         }
-        Ok((snapshot, block))
+        Ok((snapshot, block_wrapper))
     } else {
         // Load the blocks parent block from the database, returning invalid if that block is not
         // found.
@@ -1736,7 +1750,7 @@ fn load_parent<T: BeaconChainTypes>(
                 pre_state: parent_state,
                 beacon_state_root: Some(parent_state_root),
             },
-            block,
+            block_wrapper,
         ))
     };
 

beacon_node/lighthouse_network/src/lib.rs

@@ -15,7 +15,6 @@ pub mod peer_manager;
 pub mod rpc;
 pub mod types;
 
-pub use crate::types::SignedBeaconBlockAndBlobsSidecar;
 pub use config::gossip_max_size;
 
 use serde::{de, Deserialize, Deserializer, Serialize, Serializer};

beacon_node/lighthouse_network/src/peer_manager/mod.rs

@@ -502,6 +502,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::BlocksByRange => PeerAction::MidToleranceError,
                     Protocol::BlocksByRoot => PeerAction::MidToleranceError,
                     Protocol::BlobsByRange => PeerAction::MidToleranceError,
+                    Protocol::BlobsByRoot => PeerAction::MidToleranceError,
                     Protocol::Goodbye => PeerAction::LowToleranceError,
                     Protocol::MetaData => PeerAction::LowToleranceError,
                     Protocol::Status => PeerAction::LowToleranceError,
@@ -518,6 +519,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::BlocksByRange => return,
                     Protocol::BlocksByRoot => return,
                     Protocol::BlobsByRange => return,
+                    Protocol::BlobsByRoot => return,
                     Protocol::Goodbye => return,
                     Protocol::MetaData => PeerAction::LowToleranceError,
                     Protocol::Status => PeerAction::LowToleranceError,
@@ -534,6 +536,7 @@ impl<TSpec: EthSpec> PeerManager<TSpec> {
                     Protocol::BlocksByRange => PeerAction::MidToleranceError,
                     Protocol::BlocksByRoot => PeerAction::MidToleranceError,
                     Protocol::BlobsByRange => PeerAction::MidToleranceError,
+                    Protocol::BlobsByRoot => PeerAction::MidToleranceError,
                     Protocol::Goodbye => return,
                     Protocol::MetaData => return,
                     Protocol::Status => return,

beacon_node/lighthouse_network/src/rpc/codec/ssz_snappy.rs

@@ -3,7 +3,7 @@ use crate::rpc::{
     protocol::{Encoding, Protocol, ProtocolId, RPCError, Version, ERROR_TYPE_MAX, ERROR_TYPE_MIN},
 };
 use crate::rpc::{InboundRequest, OutboundRequest, RPCCodedResponse, RPCResponse};
-use crate::{rpc::methods::*, EnrSyncCommitteeBitfield, SignedBeaconBlockAndBlobsSidecar};
+use crate::{rpc::methods::*, EnrSyncCommitteeBitfield};
 use libp2p::bytes::BytesMut;
 use snap::read::FrameDecoder;
 use snap::write::FrameEncoder;
@@ -15,11 +15,7 @@ use std::io::{Read, Write};
 use std::marker::PhantomData;
 use std::sync::Arc;
 use tokio_util::codec::{Decoder, Encoder};
-use types::{
+use types::{BlobsSidecar, EthSpec, ForkContext, ForkName, SignedBeaconBlock, SignedBeaconBlockAltair, SignedBeaconBlockAndBlobsSidecar, SignedBeaconBlockBase, SignedBeaconBlockCapella, SignedBeaconBlockEip4844, SignedBeaconBlockMerge};
-    BlobsSidecar, EthSpec, ForkContext, ForkName, SignedBeaconBlock, SignedBeaconBlockAltair,
-    SignedBeaconBlockBase, SignedBeaconBlockCapella, SignedBeaconBlockEip4844,
-    SignedBeaconBlockMerge,
-};
 use unsigned_varint::codec::Uvi;
 
 const CONTEXT_BYTES_LEN: usize = 4;
@@ -72,6 +68,7 @@ impl<TSpec: EthSpec> Encoder<RPCCodedResponse<TSpec>> for SSZSnappyInboundCodec<
                 RPCResponse::BlocksByRange(res) => res.as_ssz_bytes(),
                 RPCResponse::BlocksByRoot(res) => res.as_ssz_bytes(),
                 RPCResponse::BlobsByRange(res) => res.as_ssz_bytes(),
+                RPCResponse::BlobsByRoot(res) => res.as_ssz_bytes(),
                 RPCResponse::Pong(res) => res.data.as_ssz_bytes(),
                 RPCResponse::MetaData(res) =>
                 // Encode the correct version of the MetaData response based on the negotiated version.
@@ -231,6 +228,7 @@ impl<TSpec: EthSpec> Encoder<OutboundRequest<TSpec>> for SSZSnappyOutboundCodec<
             OutboundRequest::BlocksByRange(req) => req.as_ssz_bytes(),
             OutboundRequest::BlocksByRoot(req) => req.block_roots.as_ssz_bytes(),
             OutboundRequest::BlobsByRange(req) => req.as_ssz_bytes(),
+            OutboundRequest::BlobsByRoot(req) => req.block_roots.as_ssz_bytes(),
             OutboundRequest::Ping(req) => req.as_ssz_bytes(),
             OutboundRequest::MetaData(_) => return Ok(()), // no metadata to encode
         };
@@ -313,7 +311,8 @@ impl<TSpec: EthSpec> Decoder for SSZSnappyOutboundCodec<TSpec> {
                 let _read_bytes = src.split_to(n as usize);
 
                 match self.protocol.version {
-                    Version::V1 => handle_v1_response(self.protocol.message_name, &decoded_buffer),
+                    Version::V1 => handle_v1_response(self.protocol.message_name, &decoded_buffer,
+                                                      &mut self.fork_name, ),
                     Version::V2 => handle_v2_response(
                         self.protocol.message_name,
                         &decoded_buffer,
@@ -483,6 +482,11 @@ fn handle_v1_request<T: EthSpec>(
         Protocol::BlobsByRange => Ok(Some(InboundRequest::BlobsByRange(
             BlobsByRangeRequest::from_ssz_bytes(decoded_buffer)?,
         ))),
+        Protocol::BlobsByRoot => Ok(Some(InboundRequest::BlobsByRoot(
+            BlobsByRootRequest{
+                block_roots: VariableList::from_ssz_bytes(decoded_buffer)?,
+            },
+        ))),
         Protocol::Ping => Ok(Some(InboundRequest::Ping(Ping {
             data: u64::from_ssz_bytes(decoded_buffer)?,
         }))),
@@ -540,6 +544,7 @@ fn handle_v2_request<T: EthSpec>(
 fn handle_v1_response<T: EthSpec>(
     protocol: Protocol,
     decoded_buffer: &[u8],
+    fork_name: &mut Option<ForkName>,
 ) -> Result<Option<RPCResponse<T>>, RPCError> {
     match protocol {
         Protocol::Status => Ok(Some(RPCResponse::Status(StatusMessage::from_ssz_bytes(
@@ -555,7 +560,40 @@ fn handle_v1_response<T: EthSpec>(
         Protocol::BlocksByRoot => Ok(Some(RPCResponse::BlocksByRoot(Arc::new(
             SignedBeaconBlock::Base(SignedBeaconBlockBase::from_ssz_bytes(decoded_buffer)?),
         )))),
-        Protocol::BlobsByRange => Err(RPCError::InvalidData("blobs by range via v1".to_string())),
+        Protocol::BlobsByRange => {
+            let fork_name = fork_name.take().ok_or_else(|| {
+                RPCError::ErrorResponse(
+                    RPCResponseErrorCode::InvalidRequest,
+                    format!("No context bytes provided for {} response", protocol),
+                )
+            })?;
+            match fork_name {
+                ForkName::Eip4844 => Ok(Some(RPCResponse::BlobsByRange(Arc::new(
+                    SignedBeaconBlockAndBlobsSidecar::from_ssz_bytes(decoded_buffer)?,
+                )))),
+                _ => Err(RPCError::ErrorResponse(
+                    RPCResponseErrorCode::InvalidRequest,
+                    "Invalid forkname for blobsbyrange".to_string(),
+                )),
+            }
+        },
+        Protocol::BlobsByRoot => {
+            let fork_name = fork_name.take().ok_or_else(|| {
+                RPCError::ErrorResponse(
+                    RPCResponseErrorCode::InvalidRequest,
+                    format!("No context bytes provided for {} response", protocol),
+                )
+            })?;
+            match fork_name {
+                ForkName::Eip4844 => Ok(Some(RPCResponse::BlobsByRoot(Arc::new(
+                    SignedBeaconBlockAndBlobsSidecar::from_ssz_bytes(decoded_buffer)?,
+                )))),
+                _ => Err(RPCError::ErrorResponse(
+                    RPCResponseErrorCode::InvalidRequest,
+                    "Invalid forkname for blobsbyroot".to_string(),
+                )),
+            }
+        },
         Protocol::Ping => Ok(Some(RPCResponse::Pong(Ping {
             data: u64::from_ssz_bytes(decoded_buffer)?,
         }))),
@@ -640,15 +678,8 @@ fn handle_v2_response<T: EthSpec>(
                     )?),
                 )))),
             },
-            Protocol::BlobsByRange => match fork_name {
+            Protocol::BlobsByRange => Err(RPCError::InvalidData("blobs by range via v2".to_string())),
-                ForkName::Eip4844 => Ok(Some(RPCResponse::BlobsByRange(Arc::new(
+            Protocol::BlobsByRoot => Err(RPCError::InvalidData("blobs by range via v2".to_string())),
-                    SignedBeaconBlockAndBlobsSidecar::from_ssz_bytes(decoded_buffer)?,
-                )))),
-                _ => Err(RPCError::ErrorResponse(
-                    RPCResponseErrorCode::InvalidRequest,
-                    "Invalid forkname for blobsbyrange".to_string(),
-                )),
-            },
             _ => Err(RPCError::ErrorResponse(
                 RPCResponseErrorCode::InvalidRequest,
                 "Invalid v2 request".to_string(),
@@ -917,6 +948,9 @@ mod tests {
                 OutboundRequest::BlobsByRange(blbrange) => {
                     assert_eq!(decoded, InboundRequest::BlobsByRange(blbrange))
                 }
+                OutboundRequest::BlobsByRoot(blbroot) => {
+                    assert_eq!(decoded, InboundRequest::BlobsByRoot(bbroot))
+                }
                 OutboundRequest::Ping(ping) => {
                     assert_eq!(decoded, InboundRequest::Ping(ping))
                 }

beacon_node/lighthouse_network/src/rpc/methods.rs

@@ -14,7 +14,7 @@ use strum::IntoStaticStr;
 use superstruct::superstruct;
 use types::blobs_sidecar::BlobsSidecar;
 use types::{Epoch, EthSpec, Hash256, SignedBeaconBlock, Slot};
-use crate::SignedBeaconBlockAndBlobsSidecar;
+use types::SignedBeaconBlockAndBlobsSidecar;
 
 /// Maximum number of blocks in a single request.
 pub type MaxRequestBlocks = U1024;
@@ -243,6 +243,13 @@ pub struct BlocksByRootRequest {
     pub block_roots: VariableList<Hash256, MaxRequestBlocks>,
 }
 
+/// Request a number of beacon blocks and blobs from a peer.
+#[derive(Clone, Debug, PartialEq)]
+pub struct BlobsByRootRequest {
+    /// The list of beacon block roots being requested.
+    pub block_roots: VariableList<Hash256, MaxRequestBlocks>,
+}
+
 /* RPC Handling and Grouping */
 // Collection of enums and structs used by the Codecs to encode/decode RPC messages
 
@@ -261,6 +268,9 @@ pub enum RPCResponse<T: EthSpec> {
     /// A response to a get BLOBS_BY_RANGE request
     BlobsByRange(Arc<SignedBeaconBlockAndBlobsSidecar<T>>),
 
+    /// A response to a get BLOBS_BY_ROOT request.
+    BlobsByRoot(Arc<SignedBeaconBlockAndBlobsSidecar<T>>),
+
     /// A PONG response to a PING request.
     Pong(Ping),
 
@@ -279,6 +289,9 @@ pub enum ResponseTermination {
 
     /// Blobs by range stream termination.
     BlobsByRange,
+
+    /// Blobs by root stream termination.
+    BlobsByRoot,
 }
 
 /// The structured response containing a result/code indicating success or failure
@@ -341,6 +354,7 @@ impl<T: EthSpec> RPCCodedResponse<T> {
                 RPCResponse::BlocksByRange(_) => true,
                 RPCResponse::BlocksByRoot(_) => true,
                 RPCResponse::BlobsByRange(_) => true,
+                RPCResponse::BlobsByRoot(_) => true,
                 RPCResponse::Pong(_) => false,
                 RPCResponse::MetaData(_) => false,
             },
@@ -376,6 +390,7 @@ impl<T: EthSpec> RPCResponse<T> {
             RPCResponse::BlocksByRange(_) => Protocol::BlocksByRange,
             RPCResponse::BlocksByRoot(_) => Protocol::BlocksByRoot,
             RPCResponse::BlobsByRange(_) => Protocol::BlobsByRange,
+            RPCResponse::BlobsByRoot(_) => Protocol::BlobsByRoot,
             RPCResponse::Pong(_) => Protocol::Ping,
             RPCResponse::MetaData(_) => Protocol::MetaData,
         }
@@ -412,7 +427,10 @@ impl<T: EthSpec> std::fmt::Display for RPCResponse<T> {
                 write!(f, "BlocksByRoot: Block slot: {}", block.slot())
             }
             RPCResponse::BlobsByRange(blob) => {
-                write!(f, "BlobsByRange: Blob slot: {}", blob.beacon_block_slot)
+                write!(f, "BlobsByRange: Blob slot: {}", blob.blobs_sidecar.beacon_block_slot)
+            }
+            RPCResponse::BlobsByRoot(blob) => {
+                write!(f, "BlobsByRoot: Blob slot: {}", blob.blobs_sidecar.beacon_block_slot)
             }
             RPCResponse::Pong(ping) => write!(f, "Pong: {}", ping.data),
             RPCResponse::MetaData(metadata) => write!(f, "Metadata: {}", metadata.seq_number()),

beacon_node/lighthouse_network/src/rpc/mod.rs

@@ -300,6 +300,7 @@ where
                         ResponseTermination::BlocksByRange => Protocol::BlocksByRange,
                         ResponseTermination::BlocksByRoot => Protocol::BlocksByRoot,
                         ResponseTermination::BlobsByRange => Protocol::BlobsByRange,
+                        ResponseTermination::BlobsByRoot => Protocol::BlobsByRoot,
                     },
                 ),
             },

beacon_node/lighthouse_network/src/rpc/outbound.rs

@@ -39,6 +39,7 @@ pub enum OutboundRequest<TSpec: EthSpec> {
     BlocksByRange(OldBlocksByRangeRequest),
     BlocksByRoot(BlocksByRootRequest),
     BlobsByRange(BlobsByRangeRequest),
+    BlobsByRoot(BlobsByRootRequest),
     Ping(Ping),
     MetaData(PhantomData<TSpec>),
 }
@@ -81,6 +82,9 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
                 Version::V1,
                 Encoding::SSZSnappy,
             )],
+            OutboundRequest::BlobsByRoot(_) => vec![
+                ProtocolId::new(Protocol::BlobsByRoot, Version::V1, Encoding::SSZSnappy),
+            ],
             OutboundRequest::Ping(_) => vec![ProtocolId::new(
                 Protocol::Ping,
                 Version::V1,
@@ -103,6 +107,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(req) => req.count,
             OutboundRequest::BlocksByRoot(req) => req.block_roots.len() as u64,
             OutboundRequest::BlobsByRange(req) => req.count,
+            OutboundRequest::BlobsByRoot(req) => req.block_roots.len() as u64,
             OutboundRequest::Ping(_) => 1,
             OutboundRequest::MetaData(_) => 1,
         }
@@ -116,6 +121,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(_) => Protocol::BlocksByRange,
             OutboundRequest::BlocksByRoot(_) => Protocol::BlocksByRoot,
             OutboundRequest::BlobsByRange(_) => Protocol::BlobsByRange,
+            OutboundRequest::BlobsByRoot(_) => Protocol::BlobsByRoot,
             OutboundRequest::Ping(_) => Protocol::Ping,
             OutboundRequest::MetaData(_) => Protocol::MetaData,
         }
@@ -130,6 +136,7 @@ impl<TSpec: EthSpec> OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(_) => ResponseTermination::BlocksByRange,
             OutboundRequest::BlocksByRoot(_) => ResponseTermination::BlocksByRoot,
             OutboundRequest::BlobsByRange(_) => ResponseTermination::BlobsByRange,
+            OutboundRequest::BlobsByRoot(_) => ResponseTermination::BlobsByRoot,
             OutboundRequest::Status(_) => unreachable!(),
             OutboundRequest::Goodbye(_) => unreachable!(),
             OutboundRequest::Ping(_) => unreachable!(),
@@ -186,6 +193,7 @@ impl<TSpec: EthSpec> std::fmt::Display for OutboundRequest<TSpec> {
             OutboundRequest::BlocksByRange(req) => write!(f, "Blocks by range: {}", req),
             OutboundRequest::BlocksByRoot(req) => write!(f, "Blocks by root: {:?}", req),
             OutboundRequest::BlobsByRange(req) => write!(f, "Blobs by range: {:?}", req),
+            OutboundRequest::BlobsByRoot(req) => write!(f, "Blobs by root: {:?}", req),
             OutboundRequest::Ping(ping) => write!(f, "Ping: {}", ping.data),
             OutboundRequest::MetaData(_) => write!(f, "MetaData request"),
         }

beacon_node/lighthouse_network/src/rpc/protocol.rs

@@ -107,12 +107,6 @@ lazy_static! {
     .as_ssz_bytes()
     .len();
 
-    pub static ref BLOBS_SIDECAR_MIN: usize = BlobsSidecar::<MainnetEthSpec>::empty()
-    .as_ssz_bytes()
-    .len();
-
-    pub static ref BLOBS_SIDECAR_MAX: usize = *BLOBS_SIDECAR_MIN // Max size of variable length `blobs` field
-            + (MainnetEthSpec::max_blobs_per_block() * <Blob<MainnetEthSpec> as Encode>::ssz_fixed_len());
 }
 
 /// The maximum bytes that can be sent across the RPC pre-merge.
@@ -181,6 +175,8 @@ pub enum Protocol {
     BlocksByRoot,
     /// The `BlobsByRange` protocol name.
     BlobsByRange,
+    /// The `BlobsByRoot` protocol name.
+    BlobsByRoot,
     /// The `Ping` protocol name.
     Ping,
     /// The `MetaData` protocol name.
@@ -210,6 +206,7 @@ impl std::fmt::Display for Protocol {
             Protocol::BlocksByRange => "beacon_blocks_by_range",
             Protocol::BlocksByRoot => "beacon_blocks_by_root",
             Protocol::BlobsByRange => "blobs_sidecars_by_range",
+            Protocol::BlobsByRoot => "beacon_block_and_blobs_sidecar_by_root",
             Protocol::Ping => "ping",
             Protocol::MetaData => "metadata",
         };
@@ -322,6 +319,9 @@ impl ProtocolId {
                 <BlobsByRangeRequest as Encode>::ssz_fixed_len(),
                 <BlobsByRangeRequest as Encode>::ssz_fixed_len(),
             ),
+            Protocol::BlobsByRoot => {
+                RpcLimits::new(*BLOCKS_BY_ROOT_REQUEST_MIN, *BLOCKS_BY_ROOT_REQUEST_MAX)
+            }
             Protocol::Ping => RpcLimits::new(
                 <Ping as Encode>::ssz_fixed_len(),
                 <Ping as Encode>::ssz_fixed_len(),
@@ -340,7 +340,11 @@ impl ProtocolId {
             Protocol::Goodbye => RpcLimits::new(0, 0), // Goodbye request has no response
             Protocol::BlocksByRange => rpc_block_limits_by_fork(fork_context.current_fork()),
             Protocol::BlocksByRoot => rpc_block_limits_by_fork(fork_context.current_fork()),
-            Protocol::BlobsByRange => RpcLimits::new(*BLOBS_SIDECAR_MIN, *BLOBS_SIDECAR_MAX),
+
+            //FIXME(sean) add blob sizes
+            Protocol::BlobsByRange => rpc_block_limits_by_fork(fork_context.current_fork()),
+            Protocol::BlobsByRoot => rpc_block_limits_by_fork(fork_context.current_fork()),
+
             Protocol::Ping => RpcLimits::new(
                 <Ping as Encode>::ssz_fixed_len(),
                 <Ping as Encode>::ssz_fixed_len(),
@@ -455,6 +459,7 @@ pub enum InboundRequest<TSpec: EthSpec> {
     BlocksByRange(OldBlocksByRangeRequest),
     BlocksByRoot(BlocksByRootRequest),
     BlobsByRange(BlobsByRangeRequest),
+    BlobsByRoot(BlobsByRootRequest),
     Ping(Ping),
     MetaData(PhantomData<TSpec>),
 }
@@ -499,6 +504,11 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
                 Version::V1,
                 Encoding::SSZSnappy,
             )],
+            InboundRequest::BlobsByRoot(_) => vec![ProtocolId::new(
+                Protocol::BlobsByRoot,
+                Version::V1,
+                Encoding::SSZSnappy,
+            )],
             InboundRequest::Ping(_) => vec![ProtocolId::new(
                 Protocol::Ping,
                 Version::V1,
@@ -521,6 +531,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(req) => req.count,
             InboundRequest::BlocksByRoot(req) => req.block_roots.len() as u64,
             InboundRequest::BlobsByRange(req) => req.count,
+            InboundRequest::BlobsByRoot(req) => req.block_roots.len() as u64,
             InboundRequest::Ping(_) => 1,
             InboundRequest::MetaData(_) => 1,
         }
@@ -534,6 +545,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(_) => Protocol::BlocksByRange,
             InboundRequest::BlocksByRoot(_) => Protocol::BlocksByRoot,
             InboundRequest::BlobsByRange(_) => Protocol::BlobsByRange,
+            InboundRequest::BlobsByRoot(_) => Protocol::BlobsByRoot,
             InboundRequest::Ping(_) => Protocol::Ping,
             InboundRequest::MetaData(_) => Protocol::MetaData,
         }
@@ -548,6 +560,7 @@ impl<TSpec: EthSpec> InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(_) => ResponseTermination::BlocksByRange,
             InboundRequest::BlocksByRoot(_) => ResponseTermination::BlocksByRoot,
             InboundRequest::BlobsByRange(_) => ResponseTermination::BlobsByRange,
+            InboundRequest::BlobsByRoot(_) => ResponseTermination::BlobsByRoot,
             InboundRequest::Status(_) => unreachable!(),
             InboundRequest::Goodbye(_) => unreachable!(),
             InboundRequest::Ping(_) => unreachable!(),
@@ -654,6 +667,7 @@ impl<TSpec: EthSpec> std::fmt::Display for InboundRequest<TSpec> {
             InboundRequest::BlocksByRange(req) => write!(f, "Blocks by range: {}", req),
             InboundRequest::BlocksByRoot(req) => write!(f, "Blocks by root: {:?}", req),
             InboundRequest::BlobsByRange(req) => write!(f, "Blobs by range: {:?}", req),
+            InboundRequest::BlobsByRoot(req) => write!(f, "Blobs by root: {:?}", req),
             InboundRequest::Ping(ping) => write!(f, "Ping: {}", ping.data),
             InboundRequest::MetaData(_) => write!(f, "MetaData request"),
         }

beacon_node/lighthouse_network/src/rpc/rate_limiter.rs

@@ -75,6 +75,8 @@ pub struct RPCRateLimiter {
     bbroots_rl: Limiter<PeerId>,
     /// BlobsByRange rate limiter.
     blbrange_rl: Limiter<PeerId>,
+    /// BlobsByRoot rate limiter.
+    blbroot_rl: Limiter<PeerId>,
 }
 
 /// Error type for non conformant requests
@@ -102,6 +104,8 @@ pub struct RPCRateLimiterBuilder {
     bbroots_quota: Option<Quota>,
     /// Quota for the BlobsByRange protocol.
     blbrange_quota: Option<Quota>,
+    /// Quota for the BlobsByRoot protocol.
+    blbroot_quota: Option<Quota>,
 }
 
 impl RPCRateLimiterBuilder {
@@ -121,6 +125,7 @@ impl RPCRateLimiterBuilder {
             Protocol::BlocksByRange => self.bbrange_quota = q,
             Protocol::BlocksByRoot => self.bbroots_quota = q,
             Protocol::BlobsByRange => self.blbrange_quota = q,
+            Protocol::BlobsByRoot => self.blbroot_quota = q,
         }
         self
     }
@@ -165,6 +170,10 @@ impl RPCRateLimiterBuilder {
             .blbrange_quota
             .ok_or("BlobsByRange quota not specified")?;
 
+        let blbroots_quota = self
+            .blbroot_quota
+            .ok_or("BlobsByRoot quota not specified")?;
+
         // create the rate limiters
         let ping_rl = Limiter::from_quota(ping_quota)?;
         let metadata_rl = Limiter::from_quota(metadata_quota)?;
@@ -173,6 +182,7 @@ impl RPCRateLimiterBuilder {
         let bbroots_rl = Limiter::from_quota(bbroots_quota)?;
         let bbrange_rl = Limiter::from_quota(bbrange_quota)?;
         let blbrange_rl = Limiter::from_quota(blbrange_quota)?;
+        let blbroot_rl = Limiter::from_quota(blbroots_quota)?;
 
         // check for peers to prune every 30 seconds, starting in 30 seconds
         let prune_every = tokio::time::Duration::from_secs(30);
@@ -187,6 +197,7 @@ impl RPCRateLimiterBuilder {
             bbroots_rl,
             bbrange_rl,
             blbrange_rl,
+            blbroot_rl,
             init_time: Instant::now(),
         })
     }
@@ -211,6 +222,7 @@ impl RPCRateLimiter {
             Protocol::BlocksByRange => &mut self.bbrange_rl,
             Protocol::BlocksByRoot => &mut self.bbroots_rl,
             Protocol::BlobsByRange => &mut self.blbrange_rl,
+            Protocol::BlobsByRoot => &mut self.blbroot_rl,
         };
         check(limiter)
     }
@@ -224,6 +236,7 @@ impl RPCRateLimiter {
         self.bbrange_rl.prune(time_since_start);
         self.bbroots_rl.prune(time_since_start);
         self.blbrange_rl.prune(time_since_start);
+        self.blbroot_rl.prune(time_since_start);
     }
 }
 

beacon_node/lighthouse_network/src/service/api_types.rs

@@ -3,7 +3,7 @@ use std::sync::Arc;
 use libp2p::core::connection::ConnectionId;
 use types::{BlobsSidecar, EthSpec, SignedBeaconBlock};
 
-use crate::rpc::methods::BlobsByRangeRequest;
+use crate::rpc::methods::{BlobsByRangeRequest, BlobsByRootRequest};
 use crate::rpc::{
     methods::{
         BlocksByRangeRequest, BlocksByRootRequest, OldBlocksByRangeRequest, RPCCodedResponse,
@@ -11,7 +11,7 @@ use crate::rpc::{
     },
     OutboundRequest, SubstreamId,
 };
-use crate::SignedBeaconBlockAndBlobsSidecar;
+use types::SignedBeaconBlockAndBlobsSidecar;
 
 /// Identifier of requests sent by a peer.
 pub type PeerRequestId = (ConnectionId, SubstreamId);
@@ -38,6 +38,8 @@ pub enum Request {
     BlobsByRange(BlobsByRangeRequest),
     /// A request blocks root request.
     BlocksByRoot(BlocksByRootRequest),
+    /// A request blobs root request.
+    BlobsByRoot(BlobsByRootRequest),
 }
 
 impl<TSpec: EthSpec> std::convert::From<Request> for OutboundRequest<TSpec> {
@@ -52,6 +54,7 @@ impl<TSpec: EthSpec> std::convert::From<Request> for OutboundRequest<TSpec> {
                 })
             }
             Request::BlobsByRange(r) => OutboundRequest::BlobsByRange(r),
+            Request::BlobsByRoot(r) => OutboundRequest::BlobsByRoot(r),
             Request::Status(s) => OutboundRequest::Status(s),
         }
     }
@@ -73,6 +76,8 @@ pub enum Response<TSpec: EthSpec> {
     BlobsByRange(Option<Arc<SignedBeaconBlockAndBlobsSidecar<TSpec>>>),
     /// A response to a get BLOCKS_BY_ROOT request.
     BlocksByRoot(Option<Arc<SignedBeaconBlock<TSpec>>>),
+    /// A response to a get BLOBS_BY_ROOT request.
+    BlobsByRoot(Option<Arc<SignedBeaconBlockAndBlobsSidecar<TSpec>>>),
 }
 
 impl<TSpec: EthSpec> std::convert::From<Response<TSpec>> for RPCCodedResponse<TSpec> {
@@ -86,6 +91,10 @@ impl<TSpec: EthSpec> std::convert::From<Response<TSpec>> for RPCCodedResponse<TS
                 Some(b) => RPCCodedResponse::Success(RPCResponse::BlocksByRange(b)),
                 None => RPCCodedResponse::StreamTermination(ResponseTermination::BlocksByRange),
             },
+            Response::BlobsByRoot(r) => match r {
+                Some(b) => RPCCodedResponse::Success(RPCResponse::BlobsByRoot(b)),
+                None => RPCCodedResponse::StreamTermination(ResponseTermination::BlobsByRoot),
+            },
             Response::BlobsByRange(r) => match r {
                 Some(b) => RPCCodedResponse::Success(RPCResponse::BlobsByRange(b)),
                 None => RPCCodedResponse::StreamTermination(ResponseTermination::BlobsByRange),

beacon_node/lighthouse_network/src/service/mod.rs

@@ -989,6 +989,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
             Request::BlobsByRange { .. } => {
                 metrics::inc_counter_vec(&metrics::TOTAL_RPC_REQUESTS, &["blobs_by_range"])
             }
+            Request::BlobsByRoot { .. } => {
+                metrics::inc_counter_vec(&metrics::TOTAL_RPC_REQUESTS, &["blobs_by_root"])
+            }
         }
         NetworkEvent::RequestReceived {
             peer_id,
@@ -1260,6 +1263,14 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                         );
                         Some(event)
                     }
+                    InboundRequest::BlobsByRoot(req) => {
+                        let event = self.build_request(
+                            peer_request_id,
+                            peer_id,
+                            Request::BlobsByRoot(req),
+                        );
+                        Some(event)
+                    }
                 }
             }
             Ok(RPCReceived::Response(id, resp)) => {
@@ -1290,6 +1301,9 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                     RPCResponse::BlocksByRoot(resp) => {
                         self.build_response(id, peer_id, Response::BlocksByRoot(Some(resp)))
                     }
+                    RPCResponse::BlobsByRoot(resp) => {
+                        self.build_response(id, peer_id, Response::BlobsByRoot(Some(resp)))
+                    }
                 }
             }
             Ok(RPCReceived::EndOfStream(id, termination)) => {
@@ -1297,6 +1311,7 @@ impl<AppReqId: ReqId, TSpec: EthSpec> Network<AppReqId, TSpec> {
                     ResponseTermination::BlocksByRange => Response::BlocksByRange(None),
                     ResponseTermination::BlocksByRoot => Response::BlocksByRoot(None),
                     ResponseTermination::BlobsByRange => Response::BlobsByRange(None),
+                    ResponseTermination::BlobsByRoot => Response::BlobsByRoot(None),
                 };
                 self.build_response(id, peer_id, response)
             }

beacon_node/lighthouse_network/src/types/mod.rs

@@ -13,7 +13,7 @@ pub type EnrSyncCommitteeBitfield<T> = BitVector<<T as EthSpec>::SyncCommitteeSu
 pub type Enr = discv5::enr::Enr<discv5::enr::CombinedKey>;
 
 pub use globals::NetworkGlobals;
-pub use pubsub::{PubsubMessage, SignedBeaconBlockAndBlobsSidecar, SnappyTransform};
+pub use pubsub::{PubsubMessage, SnappyTransform};
 pub use subnet::{Subnet, SubnetDiscovery};
 pub use sync_state::{BackFillState, SyncState};
 pub use topics::{subnet_from_topic_hash, GossipEncoding, GossipKind, GossipTopic, CORE_TOPICS};

beacon_node/lighthouse_network/src/types/pubsub.rs

@@ -11,12 +11,7 @@ use std::boxed::Box;
 use std::io::{Error, ErrorKind};
 use std::sync::Arc;
 use tree_hash_derive::TreeHash;
-use types::{
+use types::{Attestation, AttesterSlashing, BlobsSidecar, EthSpec, ForkContext, ForkName, ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAltair, SignedBeaconBlockAndBlobsSidecar, SignedBeaconBlockBase, SignedBeaconBlockCapella, SignedBeaconBlockEip4844, SignedBeaconBlockMerge, SignedContributionAndProof, SignedVoluntaryExit, SubnetId, SyncCommitteeMessage, SyncSubnetId};
-    Attestation, AttesterSlashing, BlobsSidecar, EthSpec, ForkContext, ForkName, ProposerSlashing,
-    SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAltair, SignedBeaconBlockBase,
-    SignedBeaconBlockCapella, SignedBeaconBlockEip4844, SignedBeaconBlockMerge,
-    SignedContributionAndProof, SignedVoluntaryExit, SubnetId, SyncCommitteeMessage, SyncSubnetId,
-};
 
 #[derive(Debug, Clone, PartialEq)]
 pub enum PubsubMessage<T: EthSpec> {
@@ -286,7 +281,7 @@ impl<T: EthSpec> std::fmt::Display for PubsubMessage<T> {
             PubsubMessage::BeaconBlockAndBlobsSidecars(block_and_blob) => write!(
                 f,
                 "Beacon block and Blobs Sidecar: slot: {}, blobs: {}",
-                block_and_blob.beacon_block.message.slot,
+                block_and_blob.beacon_block.message().slot(),
                 block_and_blob.blobs_sidecar.blobs.len(),
             ),
             PubsubMessage::AggregateAndProofAttestation(att) => write!(

beacon_node/network/src/beacon_processor/mod.rs

@@ -45,8 +45,7 @@ use beacon_chain::{BeaconChain, BeaconChainTypes, GossipVerifiedBlock};
 use derivative::Derivative;
 use futures::stream::{Stream, StreamExt};
 use futures::task::Poll;
-use lighthouse_network::rpc::methods::BlobsByRangeRequest;
+use lighthouse_network::rpc::methods::{BlobsByRangeRequest, BlobsByRootRequest};
-use lighthouse_network::SignedBeaconBlockAndBlobsSidecar;
 use lighthouse_network::{
     rpc::{BlocksByRangeRequest, BlocksByRootRequest, StatusMessage},
     Client, MessageId, NetworkGlobals, PeerId, PeerRequestId,
@@ -62,11 +61,7 @@ use std::time::Duration;
 use std::{cmp, collections::HashSet};
 use task_executor::TaskExecutor;
 use tokio::sync::mpsc;
-use types::{
+use types::{Attestation, AttesterSlashing, Hash256, ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAndBlobsSidecar, SignedContributionAndProof, SignedVoluntaryExit, SubnetId, SyncCommitteeMessage, SyncSubnetId};
-    Attestation, AttesterSlashing, Hash256, ProposerSlashing, SignedAggregateAndProof,
-    SignedBeaconBlock, SignedContributionAndProof, SignedVoluntaryExit, SubnetId,
-    SyncCommitteeMessage, SyncSubnetId,
-};
 use work_reprocessing_queue::{
     spawn_reprocess_scheduler, QueuedAggregate, QueuedRpcBlock, QueuedUnaggregate, ReadyWork,
 };
@@ -204,6 +199,7 @@ pub const STATUS_PROCESSING: &str = "status_processing";
 pub const BLOCKS_BY_RANGE_REQUEST: &str = "blocks_by_range_request";
 pub const BLOCKS_BY_ROOTS_REQUEST: &str = "blocks_by_roots_request";
 pub const BLOBS_BY_RANGE_REQUEST: &str = "blobs_by_range_request";
+pub const BLOBS_BY_ROOTS_REQUEST: &str = "blobs_by_roots_request";
 pub const UNKNOWN_BLOCK_ATTESTATION: &str = "unknown_block_attestation";
 pub const UNKNOWN_BLOCK_AGGREGATE: &str = "unknown_block_aggregate";
 
@@ -601,6 +597,21 @@ impl<T: BeaconChainTypes> WorkEvent<T> {
         }
     }
 
+    pub fn blobs_by_root_request(
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRootRequest,
+    ) -> Self {
+        Self {
+            drop_during_sync: false,
+            work: Work::BlobsByRootsRequest {
+                peer_id,
+                request_id,
+                request,
+            },
+        }
+    }
+
     /// Get a `str` representation of the type of work this `WorkEvent` contains.
     pub fn work_type(&self) -> &'static str {
         self.work.str_id()
@@ -789,6 +800,11 @@ pub enum Work<T: BeaconChainTypes> {
         request_id: PeerRequestId,
         request: BlobsByRangeRequest,
     },
+    BlobsByRootsRequest {
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRootRequest,
+    },
 }
 
 impl<T: BeaconChainTypes> Work<T> {
@@ -813,6 +829,7 @@ impl<T: BeaconChainTypes> Work<T> {
             Work::BlocksByRangeRequest { .. } => BLOCKS_BY_RANGE_REQUEST,
             Work::BlocksByRootsRequest { .. } => BLOCKS_BY_ROOTS_REQUEST,
             Work::BlobsByRangeRequest { .. } => BLOBS_BY_RANGE_REQUEST,
+            Work::BlobsByRootsRequest { .. } => BLOBS_BY_ROOTS_REQUEST,
             Work::UnknownBlockAttestation { .. } => UNKNOWN_BLOCK_ATTESTATION,
             Work::UnknownBlockAggregate { .. } => UNKNOWN_BLOCK_AGGREGATE,
         }

beacon_node/network/src/beacon_processor/worker/gossip_methods.rs

@@ -12,7 +12,6 @@ use beacon_chain::{
 };
 use lighthouse_network::{
     Client, MessageAcceptance, MessageId, PeerAction, PeerId, ReportSource,
-    SignedBeaconBlockAndBlobsSidecar,
 };
 use slog::{crit, debug, error, info, trace, warn};
 use slot_clock::SlotClock;
@@ -21,11 +20,8 @@ use std::sync::Arc;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 use store::hot_cold_store::HotColdDBError;
 use tokio::sync::mpsc;
-use types::{
+use types::{Attestation, AttesterSlashing, BlobsSidecar, EthSpec, Hash256, IndexedAttestation, ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAndBlobsSidecar, SignedContributionAndProof, SignedVoluntaryExit, Slot, SubnetId, SyncCommitteeMessage, SyncSubnetId};
-    Attestation, AttesterSlashing, BlobsSidecar, EthSpec, Hash256, IndexedAttestation,
+use types::signed_block_and_blobs::BlockMaybeBlobs;
-    ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof,
-    SignedVoluntaryExit, Slot, SubnetId, SyncCommitteeMessage, SyncSubnetId,
-};
 
 use super::{
     super::work_reprocessing_queue::{
@@ -659,7 +655,7 @@ impl<T: BeaconChainTypes> Worker<T> {
         message_id: MessageId,
         peer_id: PeerId,
         peer_client: Client,
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         reprocess_tx: mpsc::Sender<ReprocessQueueMessage<T>>,
         duplicate_cache: DuplicateCache,
         seen_duration: Duration,
@@ -697,19 +693,6 @@ impl<T: BeaconChainTypes> Worker<T> {
         }
     }
 
-    #[allow(clippy::too_many_arguments)]
-    pub async fn process_gossip_block_and_blobs_sidecar(
-        self,
-        message_id: MessageId,
-        peer_id: PeerId,
-        peer_client: Client,
-        block_and_blob: Arc<SignedBeaconBlockAndBlobsSidecar<T::EthSpec>>,
-        seen_timestamp: Duration,
-    ) {
-        //FIXME
-        unimplemented!()
-    }
-
     /// Process the beacon block received from the gossip network and
     /// if it passes gossip propagation criteria, tell the network thread to forward it.
     ///
@@ -719,7 +702,7 @@ impl<T: BeaconChainTypes> Worker<T> {
         message_id: MessageId,
         peer_id: PeerId,
         peer_client: Client,
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         reprocess_tx: mpsc::Sender<ReprocessQueueMessage<T>>,
         seen_duration: Duration,
     ) -> Option<GossipVerifiedBlock<T>> {

beacon_node/network/src/router/mod.rs

@@ -171,6 +171,9 @@ impl<T: BeaconChainTypes> Router<T> {
             Request::BlobsByRange(request) => self
                 .processor
                 .on_blobs_by_range_request(peer_id, id, request),
+            Request::BlobsByRoot(request) => self
+                .processor
+                .on_blobs_by_root_request(peer_id, id, request),
         }
     }
 
@@ -199,6 +202,10 @@ impl<T: BeaconChainTypes> Router<T> {
                 self.processor
                     .on_blobs_by_range_response(peer_id, request_id, beacon_blob);
             }
+            Response::BlobsByRoot(beacon_blob) => {
+                self.processor
+                    .on_blobs_by_root_response(peer_id, request_id, beacon_blob);
+            }
         }
     }
 

beacon_node/network/src/router/processor.rs

@@ -6,8 +6,8 @@ use crate::status::status_message;
 use crate::sync::manager::RequestId as SyncId;
 use crate::sync::SyncMessage;
 use beacon_chain::{BeaconChain, BeaconChainTypes};
-use lighthouse_network::rpc::methods::BlobsByRangeRequest;
+use lighthouse_network::rpc::methods::{BlobsByRangeRequest, BlobsByRootRequest};
-use lighthouse_network::{rpc::*, SignedBeaconBlockAndBlobsSidecar};
+use lighthouse_network::{rpc::*};
 use lighthouse_network::{
     Client, MessageId, NetworkGlobals, PeerId, PeerRequestId, Request, Response,
 };
@@ -17,11 +17,7 @@ use std::sync::Arc;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 use store::SyncCommitteeMessage;
 use tokio::sync::mpsc;
-use types::{
+use types::{Attestation, AttesterSlashing, BlobsSidecar, EthSpec, ProposerSlashing, SignedAggregateAndProof, SignedBeaconBlock, SignedBeaconBlockAndBlobsSidecar, SignedContributionAndProof, SignedVoluntaryExit, SubnetId, SyncSubnetId};
-    Attestation, AttesterSlashing, BlobsSidecar, EthSpec, ProposerSlashing,
-    SignedAggregateAndProof, SignedBeaconBlock, SignedContributionAndProof, SignedVoluntaryExit,
-    SubnetId, SyncSubnetId,
-};
 
 /// Processes validated messages from the network. It relays necessary data to the syncing thread
 /// and processes blocks from the pubsub network.
@@ -172,6 +168,18 @@ impl<T: BeaconChainTypes> Processor<T> {
             peer_id, request_id, request,
         ))
     }
+
+    pub fn on_blobs_by_root_request(
+        &mut self,
+        peer_id: PeerId,
+        request_id: PeerRequestId,
+        request: BlobsByRootRequest,
+    ) {
+        self.send_beacon_processor_work(BeaconWorkEvent::blobs_by_root_request(
+            peer_id, request_id, request,
+        ))
+    }
+
     /// Handle a `BlocksByRange` request from the peer.
     pub fn on_blocks_by_range_request(
         &mut self,

beacon_node/network/src/sync/block_lookups/mod.rs

@@ -9,6 +9,7 @@ use slog::{debug, error, trace, warn, Logger};
 use smallvec::SmallVec;
 use std::sync::Arc;
 use store::{Hash256, SignedBeaconBlock};
+use types::signed_block_and_blobs::BlockMaybeBlobs;
 
 use crate::beacon_processor::{ChainSegmentProcessId, WorkEvent};
 use crate::metrics;
@@ -30,7 +31,7 @@ mod single_block_lookup;
 #[cfg(test)]
 mod tests;
 
-pub type RootBlockTuple<T> = (Hash256, Arc<SignedBeaconBlock<T>>);
+pub type RootBlockTuple<T> = (Hash256, BlockMaybeBlobs<T>);
 
 const FAILED_CHAINS_CACHE_EXPIRY_SECONDS: u64 = 60;
 const SINGLE_BLOCK_LOOKUP_MAX_ATTEMPTS: u8 = 3;
@@ -87,6 +88,7 @@ impl<T: BeaconChainTypes> BlockLookups<T> {
 
         let mut single_block_request = SingleBlockRequest::new(hash, peer_id);
 
+        //FIXME(sean) remove unwrap?
         let (peer_id, request) = single_block_request.request_block().unwrap();
         if let Ok(request_id) = cx.single_block_lookup_request(peer_id, request) {
             self.single_block_lookups

beacon_node/network/src/sync/block_lookups/parent_lookup.rs

@@ -4,6 +4,7 @@ use lighthouse_network::PeerId;
 use std::sync::Arc;
 use store::{Hash256, SignedBeaconBlock};
 use strum::IntoStaticStr;
+use types::signed_block_and_blobs::BlockMaybeBlobs;
 
 use crate::sync::{
     manager::{Id, SLOT_IMPORT_TOLERANCE},
@@ -24,7 +25,7 @@ pub(crate) struct ParentLookup<T: BeaconChainTypes> {
     /// The root of the block triggering this parent request.
     chain_hash: Hash256,
     /// The blocks that have currently been downloaded.
-    downloaded_blocks: Vec<Arc<SignedBeaconBlock<T::EthSpec>>>,
+    downloaded_blocks: Vec<BlockMaybeBlobs<T::EthSpec>>,
     /// Request of the last parent.
     current_parent_request: SingleBlockRequest<PARENT_FAIL_TOLERANCE>,
     /// Id of the last parent request.
@@ -61,7 +62,7 @@ impl<T: BeaconChainTypes> ParentLookup<T> {
 
     pub fn new(
         block_root: Hash256,
-        block: Arc<SignedBeaconBlock<T::EthSpec>>,
+        block: BlockMaybeBlobs<T::EthSpec>,
         peer_id: PeerId,
     ) -> Self {
         let current_parent_request = SingleBlockRequest::new(block.parent_root(), peer_id);
@@ -98,7 +99,7 @@ impl<T: BeaconChainTypes> ParentLookup<T> {
         self.current_parent_request.check_peer_disconnected(peer_id)
     }
 
-    pub fn add_block(&mut self, block: Arc<SignedBeaconBlock<T::EthSpec>>) {
+    pub fn add_block(&mut self, block: BlockMaybeBlobs<T::EthSpec>) {
         let next_parent = block.parent_root();
         self.downloaded_blocks.push(block);
         self.current_parent_request.hash = next_parent;
@@ -125,7 +126,7 @@ impl<T: BeaconChainTypes> ParentLookup<T> {
         self.current_parent_request_id = None;
     }
 
-    pub fn chain_blocks(&mut self) -> Vec<Arc<SignedBeaconBlock<T::EthSpec>>> {
+    pub fn chain_blocks(&mut self) -> Vec<BlockMaybeBlobs<T::EthSpec>> {
         std::mem::take(&mut self.downloaded_blocks)
     }
 
@@ -133,7 +134,7 @@ impl<T: BeaconChainTypes> ParentLookup<T> {
     /// the processing result of the block.
     pub fn verify_block(
         &mut self,
-        block: Option<Arc<SignedBeaconBlock<T::EthSpec>>>,
+        block: Option<BlockMaybeBlobs<T::EthSpec>>,
         failed_chains: &mut lru_cache::LRUTimeCache<Hash256>,
     ) -> Result<Option<RootBlockTuple<T::EthSpec>>, VerifyError> {
         let root_and_block = self.current_parent_request.verify_block(block)?;

beacon_node/network/src/sync/block_lookups/single_block_lookup.rs

@@ -8,6 +8,7 @@ use rand::seq::IteratorRandom;
 use ssz_types::VariableList;
 use store::{EthSpec, Hash256, SignedBeaconBlock};
 use strum::IntoStaticStr;
+use types::signed_block_and_blobs::BlockMaybeBlobs;
 
 /// Object representing a single block lookup request.
 #[derive(PartialEq, Eq)]
@@ -105,7 +106,7 @@ impl<const MAX_ATTEMPTS: u8> SingleBlockRequest<MAX_ATTEMPTS> {
     /// Returns the block for processing if the response is what we expected.
     pub fn verify_block<T: EthSpec>(
         &mut self,
-        block: Option<Arc<SignedBeaconBlock<T>>>,
+        block: Option<BlockMaybeBlobs<T>>,
     ) -> Result<Option<RootBlockTuple<T>>, VerifyError> {
         match self.state {
             State::AwaitingDownload => {

beacon_node/network/src/sync/manager.rs

@@ -45,7 +45,7 @@ use beacon_chain::{BeaconChain, BeaconChainTypes, BlockError, EngineState};
 use futures::StreamExt;
 use lighthouse_network::rpc::methods::MAX_REQUEST_BLOCKS;
 use lighthouse_network::types::{NetworkGlobals, SyncState};
-use lighthouse_network::{SignedBeaconBlockAndBlobsSidecar, SyncInfo};
+use lighthouse_network::SyncInfo;
 use lighthouse_network::{PeerAction, PeerId};
 use slog::{crit, debug, error, info, trace, Logger};
 use std::boxed::Box;
@@ -53,7 +53,8 @@ use std::ops::Sub;
 use std::sync::Arc;
 use std::time::Duration;
 use tokio::sync::mpsc;
-use types::{BlobsSidecar, EthSpec, Hash256, SignedBeaconBlock, Slot};
+use types::{BlobsSidecar, EthSpec, Hash256, SignedBeaconBlock, SignedBeaconBlockAndBlobsSidecar, Slot};
+use types::signed_block_and_blobs::BlockMaybeBlobs;
 
 /// The number of slots ahead of us that is allowed before requesting a long-range (batch)  Sync
 /// from a peer. If a peer is within this tolerance (forwards or backwards), it is treated as a
@@ -80,7 +81,7 @@ pub enum RequestId {
 }
 
 #[derive(Debug)]
-/// A message than can be sent to the sync manager thread.
+/// A message that can be sent to the sync manager thread.
 pub enum SyncMessage<T: EthSpec> {
     /// A useful peer has been discovered.
     AddPeer(PeerId, SyncInfo),
@@ -89,20 +90,12 @@ pub enum SyncMessage<T: EthSpec> {
     RpcBlock {
         request_id: RequestId,
         peer_id: PeerId,
-        beacon_block: Option<Arc<SignedBeaconBlock<T>>>,
+        beacon_block: Option<BlockMaybeBlobs<T>>,
-        seen_timestamp: Duration,
-    },
-
-    /// A blob has been received from RPC.
-    RpcBlob {
-        peer_id: PeerId,
-        request_id: RequestId,
-        blob_sidecar: Option<Arc<SignedBeaconBlockAndBlobsSidecar<T>>>,
         seen_timestamp: Duration,
     },
 
     /// A block with an unknown parent has been received.
-    UnknownBlock(PeerId, Arc<SignedBeaconBlock<T>>, Hash256),
+    UnknownBlock(PeerId, BlockMaybeBlobs<T>, Hash256),
 
     /// A peer has sent an object that references a block that is unknown. This triggers the
     /// manager to attempt to find the block matching the unknown hash.
@@ -592,14 +585,6 @@ impl<T: BeaconChainTypes> SyncManager<T> {
                     .block_lookups
                     .parent_chain_processed(chain_hash, result, &mut self.network),
             },
-            SyncMessage::RpcBlob {
-                peer_id,
-                request_id,
-                blob_sidecar,
-                seen_timestamp,
-            } => {
-            self.rpc_block_received(request_id, peer_id, beacon_block, seen_timestamp);
-            },
         }
     }
 

beacon_node/network/src/sync/network_context.rs

@@ -181,6 +181,9 @@ impl<T: BeaconChainTypes> SyncNetworkContext<T> {
         peer_id: PeerId,
         request: BlocksByRootRequest,
     ) -> Result<Id, &'static str> {
+
+        //FIXME(sean) add prune depth logic here?
+
         trace!(
             self.log,
             "Sending BlocksByRoot Request";

consensus/types/src/signed_block_and_blobs.rs

@@ -1,7 +1,9 @@
+use std::sync::Arc;
 use serde_derive::{Deserialize, Serialize};
+use ssz::{Decode, DecodeError};
 use ssz_derive::{Decode, Encode};
 use tree_hash_derive::TreeHash;
-use crate::{BlobsSidecar, EthSpec, SignedBeaconBlock};
+use crate::{BlobsSidecar, EthSpec, SignedBeaconBlock, SignedBeaconBlockEip4844};
 
 #[derive(Debug, Clone, Serialize, Deserialize, Encode, TreeHash, PartialEq)]
 #[serde(bound = "T: EthSpec")]
@@ -10,9 +12,26 @@ pub struct SignedBeaconBlockAndBlobsSidecar<T: EthSpec> {
     pub blobs_sidecar: BlobsSidecar<T>,
 }
 
-impl<T: EthSpec> SignedBeaconBlockAndBlobsSidecar<T> {
+impl <T: EthSpec>Decode for SignedBeaconBlockAndBlobsSidecar<T> {
-    /// SSZ decode with fork variant determined by slot.
+    fn is_ssz_fixed_len() -> bool {
-    pub fn from_ssz_bytes(bytes: &[u8], spec: &ChainSpec) -> Result<Self, ssz::DecodeError> {
+        todo!()
-        SignedBeaconBlock::from_ssz_bytes(bytes, spec)
+    }
+
+    fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
+        todo!()
+    }
+}
+
+pub enum BlockMaybeBlobs<T: EthSpec> {
+    Block(Arc<SignedBeaconBlock<T>>),
+    BlockAndBlobs(Arc<SignedBeaconBlockAndBlobsSidecar<T>>),
+}
+
+impl <T: EthSpec> BlockMaybeBlobs<T> {
+    pub fn blobs(&self) -> Option<&BlobsSidecar<T>>{
+        match self {
+            Self::Block(_) => None,
+            Self::BlockAndBlobs(block_and_blobs) => Some(&block_and_blobs.blobs_sidecar)
+        }
     }
 }