Add support for Electra

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/google/uuid v1.6.0
 	github.com/gorilla/mux v1.8.1
 	github.com/holiman/uint256 v1.2.4
-	github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7
+	github.com/prysmaticlabs/go-bitfield v0.0.0-20240328144219-a1caa50c3a1e
 	github.com/sirupsen/logrus v1.9.3
 	github.com/stretchr/testify v1.8.4
 )
@@ -31,7 +31,7 @@ require (
 	github.com/fatih/color v1.16.0 // indirect
 	github.com/gballet/go-verkle v0.1.1-0.20231031103413-a67434b50f46 // indirect
 	github.com/getsentry/sentry-go v0.18.0 // indirect
-	github.com/goccy/go-yaml v1.11.2 // indirect
+	github.com/goccy/go-yaml v1.11.3 // indirect
 	github.com/gofrs/flock v0.8.1 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
@@ -59,8 +59,8 @@ require (
 
 require (
 	github.com/StackExchange/wmi v1.2.1 // indirect
-	github.com/attestantio/go-builder-client v0.4.2
-	github.com/attestantio/go-eth2-client v0.19.10
+	github.com/attestantio/go-builder-client v0.4.6-0.20240508205504-2210689d2f24
+	github.com/attestantio/go-eth2-client v0.21.4-0.20240508205406-66fbb02e3c16
 	github.com/btcsuite/btcd v0.22.0-beta // indirect
 	github.com/btcsuite/btcd/btcec/v2 v2.3.2 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
@@ -69,7 +69,7 @@ require (
 	github.com/ferranbt/fastssz v0.1.3 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect
-	github.com/klauspost/cpuid/v2 v2.2.6 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.7 // indirect
 	github.com/mattn/go-runewidth v0.0.13 // indirect
 	github.com/minio/sha256-simd v1.0.1 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
@@ -82,8 +82,8 @@ require (
 	github.com/tklauser/numcpus v0.6.1 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
 	go.uber.org/zap v1.25.0 // indirect
-	golang.org/x/crypto v0.18.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
+	golang.org/x/crypto v0.22.0 // indirect
+	golang.org/x/sys v0.19.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -14,10 +14,10 @@ github.com/VictoriaMetrics/fastcache v1.12.1/go.mod h1:tX04vaqcNoQeGLD+ra5pU5sWk
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/ajg/form v1.5.1/go.mod h1:uL1WgH+h2mgNtvBq0339dVnzXdBETtL2LeUXaIv25UY=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/attestantio/go-builder-client v0.4.2 h1:EycfAFqQV+ooc2z6hmTsbuH4TCLknr0aO0nHLHLMpJM=
-github.com/attestantio/go-builder-client v0.4.2/go.mod h1:e02i/WO4fjs3/u9oIZEjiC8CK1Qyxy4cpiMMGKx4VqQ=
-github.com/attestantio/go-eth2-client v0.19.10 h1:NLs9mcBvZpBTZ3du7Ey2NHQoj8d3UePY7pFBXX6C6qs=
-github.com/attestantio/go-eth2-client v0.19.10/go.mod h1:TTz7YF6w4z6ahvxKiHuGPn6DbQn7gH6HPuWm/DEQeGE=
+github.com/attestantio/go-builder-client v0.4.6-0.20240508205504-2210689d2f24 h1:KXWQwsxrrJD1G7rp+18uESZ0BSPmUdady46iAfCgwDY=
+github.com/attestantio/go-builder-client v0.4.6-0.20240508205504-2210689d2f24/go.mod h1:bs7HF4beRWCjcvKsHH8nEl3aDzrTqeUjXOfqpfrYTJQ=
+github.com/attestantio/go-eth2-client v0.21.4-0.20240508205406-66fbb02e3c16 h1:gwMEOhFdbmCJy5olyRtGPmM4RoIXo6v2HkbKt7YpPr4=
+github.com/attestantio/go-eth2-client v0.21.4-0.20240508205406-66fbb02e3c16/go.mod h1:Ht9tN0WlhpgIWWO7Hqfi3/nq2rUGQv/zCd/BMI93a84=
 github.com/aymerick/raymond v2.0.3-0.20180322193309-b565731e1464+incompatible/go.mod h1:osfaiScAUVup+UC9Nfq76eWqDhXlp+4UYaA8uhTBO6g=
 github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
 github.com/benbjohnson/clock v1.3.0/go.mod h1:J11/hYXuz8f4ySSvYwY0FKfm+ezbsZBKZxNJlLklBHA=
@@ -134,8 +134,8 @@ github.com/go-playground/validator/v10 v10.11.1/go.mod h1:i+3WkQ1FvaUjjxh1kSvIA4
 github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee/go.mod h1:L0fX3K22YWvt/FAX9NnzrNzcI4wNYi9Yku4O0LKYflo=
 github.com/gobwas/pool v0.2.0/go.mod h1:q8bcK0KcYlCgd9e7WYLm9LpyS+YeLd8JVDW6WezmKEw=
 github.com/gobwas/ws v1.0.2/go.mod h1:szmBTxLgaFppYjEmNtny/v3w89xOydFnnZMcgRRu/EM=
-github.com/goccy/go-yaml v1.11.2 h1:joq77SxuyIs9zzxEjgyLBugMQ9NEgTWxXfz2wVqwAaQ=
-github.com/goccy/go-yaml v1.11.2/go.mod h1:wKnAMd44+9JAAnGQpWVEgBzGt3YuTaQ4uXoHvE4m7WU=
+github.com/goccy/go-yaml v1.11.3 h1:B3W9IdWbvrUu2OYQGwvU1nZtvMQJPBKgBUuweJjLj6I=
+github.com/goccy/go-yaml v1.11.3/go.mod h1:wKnAMd44+9JAAnGQpWVEgBzGt3YuTaQ4uXoHvE4m7WU=
 github.com/gofrs/flock v0.8.1 h1:+gYjHKf32LDeiEEFhQaotPbLuUXjY5ZqxKgXy7n59aw=
 github.com/gofrs/flock v0.8.1/go.mod h1:F1TvTiK9OcQqauNUHlbJvyl9Qa1QvF/gOUDKA14jxHU=
 github.com/gogo/googleapis v0.0.0-20180223154316-0cd9801be74a/go.mod h1:gf4bu3Q80BeJ6H1S1vYPm8/ELATdvryBaNFGgqEef3s=
@@ -221,8 +221,8 @@ github.com/klauspost/compress v1.9.7/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0
 github.com/klauspost/compress v1.15.15 h1:EF27CXIuDsYJ6mmvtBRlEuB2UVOqHG1tAXgZ7yIO+lw=
 github.com/klauspost/compress v1.15.15/go.mod h1:ZcK2JAFqKOpnBlxcLsJzYfrS9X1akm9fHZNnD9+Vo/4=
 github.com/klauspost/cpuid v1.2.1/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
-github.com/klauspost/cpuid/v2 v2.2.6 h1:ndNyv040zDGIDh8thGkXYjnFtiN02M1PVVF+JE/48xc=
-github.com/klauspost/cpuid/v2 v2.2.6/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
+github.com/klauspost/cpuid/v2 v2.2.7 h1:ZWSB3igEs+d0qvnxR/ZBzXVmxkgt8DdzP6m9pfuVLDM=
+github.com/klauspost/cpuid/v2 v2.2.7/go.mod h1:Lcz8mBdAVJIBVzewtcLocK12l3Y+JytZYpaMropDUws=
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
@@ -312,8 +312,8 @@ github.com/prometheus/common v0.42.0 h1:EKsfXEYo4JpWMHH5cg+KOUWeuJSov1Id8zGR8eeI
 github.com/prometheus/common v0.42.0/go.mod h1:xBwqVerjNdUDjgODMpudtOMwlOwf2SaTr1yjz4b7Zbc=
 github.com/prometheus/procfs v0.10.1 h1:kYK1Va/YMlutzCGazswoHKo//tZVlFpKYh+PymziUAg=
 github.com/prometheus/procfs v0.10.1/go.mod h1:nwNm2aOCAYw8uTR/9bWRREkZFxAUcWzPHWJq+XBB/FM=
-github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7 h1:0tVE4tdWQK9ZpYygoV7+vS6QkDvQVySboMVEIxBJmXw=
-github.com/prysmaticlabs/go-bitfield v0.0.0-20210809151128-385d8c5e3fb7/go.mod h1:wmuf/mdK4VMD+jA9ThwcUKjg3a2XWM9cVfFYjDyY4j4=
+github.com/prysmaticlabs/go-bitfield v0.0.0-20240328144219-a1caa50c3a1e h1:ATgOe+abbzfx9kCPeXIW4fiWyDdxlwHw07j8UGhdTd4=
+github.com/prysmaticlabs/go-bitfield v0.0.0-20240328144219-a1caa50c3a1e/go.mod h1:wmuf/mdK4VMD+jA9ThwcUKjg3a2XWM9cVfFYjDyY4j4=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
@@ -396,8 +396,8 @@ golang.org/x/crypto v0.0.0-20200510223506-06a226fb4e37/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc=
-golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg=
+golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
+golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa h1:FRnLl4eNAQl8hwxVVC17teOw8kdjVDVAiFMtgUdTSRQ=
 golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa/go.mod h1:zk2irFbV9DP96SEBUUAy67IdHUaZuSnrz1n472HUCLE=
@@ -429,8 +429,8 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20211008194852-3b03d305991f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.18.0 h1:mIYleuAkSbHh0tCv7RvjL3F6ZVbLjq4+R7zbOn3Kokg=
-golang.org/x/net v0.18.0/go.mod h1:/czyP5RqHAH4odGYxBJ1qz0+CE5WZ+2j1YgoEo8F2jQ=
+golang.org/x/net v0.21.0 h1:AQyQV4dYCvJ7vGmJyKki9+PBdyvhkSd8EIx/qb0AYv4=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -477,8 +477,8 @@ golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.16.0 h1:xWw16ngr6ZMtmxDyKyIgsE93KNKz5HKmMa3b8ALHidU=
-golang.org/x/sys v0.16.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=

server/mock/mock_relay.go

@@ -13,11 +13,13 @@ import (
 	builderApi "github.com/attestantio/go-builder-client/api"
 	builderApiCapella "github.com/attestantio/go-builder-client/api/capella"
 	builderApiDeneb "github.com/attestantio/go-builder-client/api/deneb"
+	builderApiElectra "github.com/attestantio/go-builder-client/api/electra"
 	builderApiV1 "github.com/attestantio/go-builder-client/api/v1"
 	builderSpec "github.com/attestantio/go-builder-client/spec"
 	"github.com/attestantio/go-eth2-client/spec"
 	"github.com/attestantio/go-eth2-client/spec/capella"
 	"github.com/attestantio/go-eth2-client/spec/deneb"
+	"github.com/attestantio/go-eth2-client/spec/electra"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/flashbots/go-boost-utils/bls"
@@ -219,6 +221,31 @@ func (m *Relay) MakeGetHeaderResponse(value uint64, blockHash, parentHash, publi
 				Signature: signature,
 			},
 		}
+	case spec.DataVersionElectra:
+		message := &builderApiElectra.BuilderBid{
+			Header: &electra.ExecutionPayloadHeader{
+				BlockHash:              HexToHash(blockHash),
+				ParentHash:             HexToHash(parentHash),
+				WithdrawalsRoot:        phase0.Root{},
+				BaseFeePerGas:          uint256.NewInt(0),
+				WithdrawalRequestsRoot: phase0.Root{},
+			},
+			BlobKZGCommitments: make([]deneb.KZGCommitment, 0),
+			Value:              uint256.NewInt(value),
+			Pubkey:             HexToPubkey(publicKey),
+		}
+
+		// Sign the message.
+		signature, err := ssz.SignMessage(message, ssz.DomainBuilder, m.secretKey)
+		require.NoError(m.t, err)
+
+		return &builderSpec.VersionedSignedBuilderBid{
+			Version: spec.DataVersionElectra,
+			Electra: &builderApiElectra.SignedBuilderBid{
+				Message:   message,
+				Signature: signature,
+			},
+		}
 	case spec.DataVersionUnknown, spec.DataVersionPhase0, spec.DataVersionAltair, spec.DataVersionBellatrix:
 		return nil
 	}

server/service.go

@@ -20,6 +20,7 @@ import (
 	builderSpec "github.com/attestantio/go-builder-client/spec"
 	eth2ApiV1Capella "github.com/attestantio/go-eth2-client/api/v1/capella"
 	eth2ApiV1Deneb "github.com/attestantio/go-eth2-client/api/v1/deneb"
+	eth2ApiV1Electra "github.com/attestantio/go-eth2-client/api/v1/electra"
 	"github.com/attestantio/go-eth2-client/spec/phase0"
 	"github.com/flashbots/go-boost-utils/ssz"
 	"github.com/flashbots/go-boost-utils/utils"
@@ -766,6 +767,146 @@ func (m *BoostService) processDenebPayload(w http.ResponseWriter, req *http.Requ
 	m.respondOK(w, result)
 }
 
+func (m *BoostService) processElectraPayload(w http.ResponseWriter, req *http.Request, log *logrus.Entry, blindedBlock *eth2ApiV1Electra.SignedBlindedBeaconBlock) {
+	// Get the currentSlotUID for this slot
+	currentSlotUID := ""
+	m.slotUIDLock.Lock()
+	if m.slotUID.slot == uint64(blindedBlock.Message.Slot) {
+		currentSlotUID = m.slotUID.uid.String()
+	} else {
+		log.Warnf("latest slotUID is for slot %d rather than payload slot %d", m.slotUID.slot, blindedBlock.Message.Slot)
+	}
+	m.slotUIDLock.Unlock()
+
+	// Prepare logger
+	ua := UserAgent(req.Header.Get("User-Agent"))
+	log = log.WithFields(logrus.Fields{
+		"ua":         ua,
+		"slot":       blindedBlock.Message.Slot,
+		"blockHash":  blindedBlock.Message.Body.ExecutionPayloadHeader.BlockHash.String(),
+		"parentHash": blindedBlock.Message.Body.ExecutionPayloadHeader.ParentHash.String(),
+		"slotUID":    currentSlotUID,
+	})
+
+	// Log how late into the slot the request starts
+	slotStartTimestamp := m.genesisTime + uint64(blindedBlock.Message.Slot)*config.SlotTimeSec
+	msIntoSlot := uint64(time.Now().UTC().UnixMilli()) - slotStartTimestamp*1000
+	log.WithFields(logrus.Fields{
+		"genesisTime": m.genesisTime,
+		"slotTimeSec": config.SlotTimeSec,
+		"msIntoSlot":  msIntoSlot,
+	}).Infof("submitBlindedBlock request start - %d milliseconds into slot %d", msIntoSlot, blindedBlock.Message.Slot)
+
+	// Get the bid!
+	bidKey := bidRespKey{slot: uint64(blindedBlock.Message.Slot), blockHash: blindedBlock.Message.Body.ExecutionPayloadHeader.BlockHash.String()}
+	m.bidsLock.Lock()
+	originalBid := m.bids[bidKey]
+	m.bidsLock.Unlock()
+	if originalBid.response.IsEmpty() {
+		log.Error("no bid for this getPayload payload found, was getHeader called before?")
+	} else if len(originalBid.relays) == 0 {
+		log.Warn("bid found but no associated relays")
+	}
+
+	// Add request headers
+	headers := map[string]string{HeaderKeySlotUID: currentSlotUID}
+
+	// Prepare for requests
+	var wg sync.WaitGroup
+	var mu sync.Mutex
+	result := new(builderApi.VersionedSubmitBlindedBlockResponse)
+
+	// Prepare the request context, which will be cancelled after the first successful response from a relay
+	requestCtx, requestCtxCancel := context.WithCancel(context.Background())
+	defer requestCtxCancel()
+
+	for _, relay := range m.relays {
+		wg.Add(1)
+		go func(relay types.RelayEntry) {
+			defer wg.Done()
+			url := relay.GetURI(params.PathGetPayload)
+			log := log.WithField("url", url)
+			log.Debug("calling getPayload")
+
+			responsePayload := new(builderApi.VersionedSubmitBlindedBlockResponse)
+			_, err := SendHTTPRequestWithRetries(requestCtx, m.httpClientGetPayload, http.MethodPost, url, ua, headers, blindedBlock, responsePayload, m.requestMaxRetries, log)
+			if err != nil {
+				if errors.Is(requestCtx.Err(), context.Canceled) {
+					log.Info("request was cancelled") // this is expected, if payload has already been received by another relay
+				} else {
+					log.WithError(err).Error("error making request to relay")
+				}
+				return
+			}
+
+			if getPayloadResponseIsEmpty(responsePayload) {
+				log.Error("response with empty data!")
+				return
+			}
+
+			payload := responsePayload.Electra.ExecutionPayload
+			blobs := responsePayload.Electra.BlobsBundle
+
+			// Ensure the response blockhash matches the request
+			if blindedBlock.Message.Body.ExecutionPayloadHeader.BlockHash != payload.BlockHash {
+				log.WithFields(logrus.Fields{
+					"responseBlockHash": payload.BlockHash.String(),
+				}).Error("requestBlockHash does not equal responseBlockHash")
+				return
+			}
+
+			commitments := blindedBlock.Message.Body.BlobKZGCommitments
+			// Ensure that blobs are valid and matches the request
+			if len(commitments) != len(blobs.Blobs) || len(commitments) != len(blobs.Commitments) || len(commitments) != len(blobs.Proofs) {
+				log.WithFields(logrus.Fields{
+					"requestBlobCommitments":  len(commitments),
+					"responseBlobs":           len(blobs.Blobs),
+					"responseBlobCommitments": len(blobs.Commitments),
+					"responseBlobProofs":      len(blobs.Proofs),
+				}).Error("block KZG commitment length does not equal responseBlobs length")
+				return
+			}
+
+			for i, commitment := range commitments {
+				if commitment != blobs.Commitments[i] {
+					log.WithFields(logrus.Fields{
+						"requestBlobCommitment":  commitment.String(),
+						"responseBlobCommitment": blobs.Commitments[i].String(),
+						"index":                  i,
+					}).Error("requestBlobCommitment does not equal responseBlobCommitment")
+					return
+				}
+			}
+
+			// Lock before accessing the shared payload
+			mu.Lock()
+			defer mu.Unlock()
+
+			if requestCtx.Err() != nil { // request has been cancelled (or deadline exceeded)
+				return
+			}
+
+			// Received successful response. Now cancel other requests and return immediately
+			requestCtxCancel()
+			*result = *responsePayload
+			log.Info("received payload from relay")
+		}(relay)
+	}
+
+	// Wait for all requests to complete...
+	wg.Wait()
+
+	// If no payload has been received from relay, log loudly about withholding!
+	if getPayloadResponseIsEmpty(result) {
+		originRelays := types.RelayEntriesToStrings(originalBid.relays)
+		log.WithField("relaysWithBid", strings.Join(originRelays, ", ")).Error("no payload received from relay!")
+		m.respondError(w, http.StatusBadGateway, errNoSuccessfulRelayResponse.Error())
+		return
+	}
+
+	m.respondOK(w, result)
+}
+
 func (m *BoostService) handleGetPayload(w http.ResponseWriter, req *http.Request) {
 	log := m.log.WithField("method", "getPayload")
 	log.Debug("getPayload request starts")
@@ -779,19 +920,24 @@ func (m *BoostService) handleGetPayload(w http.ResponseWriter, req *http.Request
 	}
 
 	// Decode the body now
-	payload := new(eth2ApiV1Deneb.SignedBlindedBeaconBlock)
+	payload := new(eth2ApiV1Electra.SignedBlindedBeaconBlock)
 	if err := DecodeJSON(bytes.NewReader(body), payload); err != nil {
-		log.Debug("could not decode Deneb request payload, attempting to decode body into Capella payload")
-		payload := new(eth2ApiV1Capella.SignedBlindedBeaconBlock)
+		log.Debug("could not decode Electra request payload, attempting to decode body into Deneb payload")
+		payload := new(eth2ApiV1Deneb.SignedBlindedBeaconBlock)
 		if err := DecodeJSON(bytes.NewReader(body), payload); err != nil {
-			log.WithError(err).WithField("body", string(body)).Error("could not decode request payload from the beacon-node (signed blinded beacon block)")
-			m.respondError(w, http.StatusBadRequest, err.Error())
+			log.Debug("could not decode Deneb request payload, attempting to decode body into Capella payload")
+			payload := new(eth2ApiV1Capella.SignedBlindedBeaconBlock)
+			if err := DecodeJSON(bytes.NewReader(body), payload); err != nil {
+				log.WithError(err).WithField("body", string(body)).Error("could not decode request payload from the beacon-node (signed blinded beacon block)")
+				m.respondError(w, http.StatusBadRequest, err.Error())
+				return
+			}
+			m.processCapellaPayload(w, req, log, payload, body)
 			return
 		}
-		m.processCapellaPayload(w, req, log, payload, body)
-		return
+		m.processDenebPayload(w, req, log, payload)
 	}
-	m.processDenebPayload(w, req, log, payload)
+	m.processElectraPayload(w, req, log, payload)
 }
 
 // CheckRelays sends a request to each one of the relays previously registered to get their status

server/utils.go

@@ -257,6 +257,12 @@ func getPayloadResponseIsEmpty(payload *builderApi.VersionedSubmitBlindedBlockRe
 			payload.Deneb.BlobsBundle == nil {
 			return true
 		}
+	case spec.DataVersionElectra:
+		if payload.Electra == nil || payload.Electra.ExecutionPayload == nil ||
+			payload.Electra.ExecutionPayload.BlockHash == nilHash ||
+			payload.Electra.BlobsBundle == nil {
+			return true
+		}
 	case spec.DataVersionUnknown, spec.DataVersionPhase0, spec.DataVersionAltair, spec.DataVersionBellatrix:
 		return true
 	}