feat: add handleReceipts70

eth/protocols/eth/dispatcher.go

@@ -201,7 +201,10 @@ func (p *Peer) dispatcher() {
 			reqOp.fail <- err
 
 			if err == nil {
-				pending[req.id] = req
+				// do not overwrite if it is re-request
+				if _, ok := pending[req.id]; !ok {
+					pending[req.id] = req
+				}
 			}
 
 		case cancelOp := <-p.reqCancel:

eth/protocols/eth/handler.go

@@ -176,7 +176,7 @@ var eth68 = map[uint64]msgHandler{
 	GetBlockBodiesMsg:             handleGetBlockBodies,
 	BlockBodiesMsg:                handleBlockBodies,
 	GetReceiptsMsg:                handleGetReceipts68,
-	ReceiptsMsg:                   handleReceipts[*ReceiptList68],
+	ReceiptsMsg:                   handleReceipts69[*ReceiptList68],
 	GetPooledTransactionsMsg:      handleGetPooledTransactions,
 	PooledTransactionsMsg:         handlePooledTransactions,
 }
@@ -189,7 +189,7 @@ var eth69 = map[uint64]msgHandler{
 	GetBlockBodiesMsg:             handleGetBlockBodies,
 	BlockBodiesMsg:                handleBlockBodies,
 	GetReceiptsMsg:                handleGetReceipts69,
-	ReceiptsMsg:                   handleReceipts[*ReceiptList69],
+	ReceiptsMsg:                   handleReceipts69[*ReceiptList69],
 	GetPooledTransactionsMsg:      handleGetPooledTransactions,
 	PooledTransactionsMsg:         handlePooledTransactions,
 	BlockRangeUpdateMsg:           handleBlockRangeUpdate,

eth/protocols/eth/handlers.go

@@ -399,7 +399,7 @@ func handleBlockBodies(backend Backend, msg Decoder, peer *Peer) error {
 	}, metadata)
 }
 
-func handleReceipts[L ReceiptsList](backend Backend, msg Decoder, peer *Peer) error {
+func handleReceipts69[L ReceiptsList](backend Backend, msg Decoder, peer *Peer) error {
 	// A batch of receipts arrived to one of our previous requests
 	res := new(ReceiptsPacket[L])
 	if err := msg.Decode(res); err != nil {
@@ -431,6 +431,77 @@ func handleReceipts[L ReceiptsList](backend Backend, msg Decoder, peer *Peer) er
 	}, metadata)
 }
 
+func handleReceipts70(backend Backend, msg Decoder, peer *Peer) error {
+	res := new(ReceiptsPacket70)
+	if err := msg.Decode(res); err != nil {
+		return err
+	}
+
+	if res.LastBlockIncomplete {
+		return handlePartialReceipts(peer, res)
+	}
+
+	if buf, ok := peer.receiptBuffer[res.RequestId]; ok {
+		res.List = append(buf, res.List...)
+		delete(peer.receiptBuffer, res.RequestId)
+		delete(peer.requestedReceipts, res.RequestId)
+	}
+
+	// Assign buffers shared between list elements
+	buffers := new(receiptListBuffers)
+	for i := range res.List {
+		res.List[i].setBuffers(buffers)
+	}
+
+	metadata := func() interface{} {
+		hasher := trie.NewStackTrie(nil)
+		hashes := make([]common.Hash, len(res.List))
+		for i := range res.List {
+			hashes[i] = types.DeriveSha(res.List[i], hasher)
+		}
+		return hashes
+	}
+
+	var enc ReceiptsRLPResponse
+	for i := range res.List {
+		enc = append(enc, res.List[i].EncodeForStorage())
+	}
+
+	return peer.dispatchResponse(&Response{
+		id:   res.RequestId,
+		code: ReceiptsMsg,
+		Res:  &enc,
+	}, metadata)
+}
+
+func handlePartialReceipts(peer *Peer, res *ReceiptsPacket70) error {
+	id := res.RequestId
+
+	peer.receiptBuffer[id] = append(peer.receiptBuffer[id], res.List...)
+
+	last := res.List[len(res.List)-1]
+	if !validatePartialReceipt(last) {
+		return fmt.Errorf("Receipts: validation error, should drop the peer")
+	}
+
+	req := &Request{
+		id:   id,
+		sink: nil,
+		code: GetReceiptsMsg,
+		want: ReceiptsMsg,
+		data: &GetReceiptsPacket{
+			RequestId:          id,
+			GetReceiptsRequest: peer.requestedReceipts[id][len(res.List)-1:],
+		},
+	}
+	return peer.dispatchRequest(req)
+}
+
+// TODO: position?
+func validatePartialReceipt(receipt *ReceiptList69) bool {
+	return true
+}
+
 func handleNewPooledTransactionHashes(backend Backend, msg Decoder, peer *Peer) error {
 	// New transaction announcement arrived, make sure we have
 	// a valid and fresh chain to handle them

eth/protocols/eth/peer.go

@@ -59,6 +59,9 @@ type Peer struct {
 	reqCancel   chan *cancel   // Dispatch channel to cancel pending requests and untrack them
 	resDispatch chan *response // Dispatch channel to fulfil pending requests and untrack them
 
+	requestedReceipts map[uint64][]common.Hash
+	receiptBuffer     map[uint64][]*ReceiptList69
+
 	term chan struct{} // Termination channel to stop the broadcasters
 }
 
@@ -66,18 +69,20 @@ type Peer struct {
 // version.
 func NewPeer(version uint, p *p2p.Peer, rw p2p.MsgReadWriter, txpool TxPool) *Peer {
 	peer := &Peer{
-		id:          p.ID().String(),
-		Peer:        p,
-		rw:          rw,
-		version:     version,
-		knownTxs:    newKnownCache(maxKnownTxs),
-		txBroadcast: make(chan []common.Hash),
-		txAnnounce:  make(chan []common.Hash),
-		reqDispatch: make(chan *request),
-		reqCancel:   make(chan *cancel),
-		resDispatch: make(chan *response),
-		txpool:      txpool,
-		term:        make(chan struct{}),
+		id:                p.ID().String(),
+		Peer:              p,
+		rw:                rw,
+		version:           version,
+		knownTxs:          newKnownCache(maxKnownTxs),
+		txBroadcast:       make(chan []common.Hash),
+		txAnnounce:        make(chan []common.Hash),
+		reqDispatch:       make(chan *request),
+		reqCancel:         make(chan *cancel),
+		resDispatch:       make(chan *response),
+		txpool:            txpool,
+		requestedReceipts: make(map[uint64][]common.Hash),
+		receiptBuffer:     make(map[uint64][]*ReceiptList69),
+		term:              make(chan struct{}),
 	}
 	// Start up all the broadcasters
 	go peer.broadcastTransactions()
@@ -336,6 +341,8 @@ func (p *Peer) RequestReceipts(hashes []common.Hash, sink chan *Response) (*Requ
 	if err := p.dispatchRequest(req); err != nil {
 		return nil, err
 	}
+
+	p.requestedReceipts[id] = hashes
 	return req, nil
 }
 

eth/protocols/eth/protocol.go

@@ -282,6 +282,12 @@ type ReceiptsPacket[L ReceiptsList] struct {
 	List      []L
 }
 
+type ReceiptsPacket70 struct {
+	RequestId           uint64
+	List                []*ReceiptList69
+	LastBlockIncomplete bool
+}
+
 // ReceiptsRLPResponse is used for receipts, when we already have it encoded
 type ReceiptsRLPResponse []rlp.RawValue