Add support for bid spamming

cmd/root.go

@@ -85,6 +85,17 @@ func init() {
 	// Validate withdrawals flag
 	rootCmd.PersistentFlags().Bool("validate-withdrawals", defaults.ValidateWithdrawals, "Validate expected vs actual withdrawals")
 
+	// Spamoor flags (libp2p-based bid gossip; replaces HTTP submission when enabled)
+	rootCmd.PersistentFlags().Bool("spamoor", false, "Submit ePBS bids via libp2p gossip instead of the beacon node HTTP endpoint (requires --epbs-enabled)")
+	rootCmd.PersistentFlags().String("spamoor-p2p-privkey", "", "Path to secp256k1 p2p private key file (auto-generated if absent)")
+	rootCmd.PersistentFlags().Uint("spamoor-tcp-port", defaults.Spamoor.TCPPort, "Spamoor libp2p TCP listen port")
+	rootCmd.PersistentFlags().Uint("spamoor-quic-port", defaults.Spamoor.QUICPort, "Spamoor libp2p QUIC listen port (UDP)")
+	rootCmd.PersistentFlags().Uint("spamoor-disc-port", defaults.Spamoor.DiscPort, "Spamoor discv5 listen port (UDP)")
+	rootCmd.PersistentFlags().String("spamoor-bootnodes", "", "Comma-separated ENRs (or @/path/to/file) to seed discv5")
+	rootCmd.PersistentFlags().String("spamoor-static-peers", "", "Comma-separated libp2p multiaddrs to dial directly")
+	rootCmd.PersistentFlags().Int("spamoor-gossip-d", defaults.Spamoor.GossipD, "Gossipsub mesh degree D (mainnet default 8)")
+	rootCmd.PersistentFlags().Int("spamoor-max-peers", defaults.Spamoor.MaxPeers, "Max libp2p peers (0 = unbounded)")
+
 	// Payload Build Time (0 = auto from slot time)
 	rootCmd.PersistentFlags().Uint64("payload-build-time", 0, "Time to allow the EL to build the payload in ms (0 = auto: slotTime/6)")
 
@@ -177,6 +188,17 @@ func initConfig() error {
 		},
 		ValidateWithdrawals: v.GetBool("validate-withdrawals"),
 		PayloadBuildTime:    v.GetUint64("payload-build-time"),
+		SpamoorEnabled:      v.GetBool("spamoor"),
+		Spamoor: builder.SpamoorConfig{
+			P2PPrivKey:  v.GetString("spamoor-p2p-privkey"),
+			TCPPort:     v.GetUint("spamoor-tcp-port"),
+			QUICPort:    v.GetUint("spamoor-quic-port"),
+			DiscPort:    v.GetUint("spamoor-disc-port"),
+			Bootnodes:   v.GetString("spamoor-bootnodes"),
+			StaticPeers: v.GetString("spamoor-static-peers"),
+			GossipD:     v.GetInt("spamoor-gossip-d"),
+			MaxPeers:    v.GetInt("spamoor-max-peers"),
+		},
 	}
 
 	return nil

cmd/run.go

@@ -25,6 +25,7 @@ import (
 	"github.com/ethpandaops/buildoor/pkg/rpc/engine"
 	"github.com/ethpandaops/buildoor/pkg/rpc/execution"
 	"github.com/ethpandaops/buildoor/pkg/signer"
+	"github.com/ethpandaops/buildoor/pkg/spamoor"
 	"github.com/ethpandaops/buildoor/pkg/wallet"
 	"github.com/ethpandaops/buildoor/pkg/webui"
 	"github.com/ethpandaops/buildoor/pkg/webui/types"
@@ -219,10 +220,55 @@ and begins building blocks according to configuration.`,
 			logger.Info("Gloas fork epoch not found in chain spec, ePBS not available")
 		}
 
+		// 8a. Initialize spamoor (libp2p bid gossip) if requested.
+		// When enabled, ePBS routes bids through gossipsub instead of HTTP.
+		var (
+			spamoorSvc   *spamoor.Service
+			bidSubmitter epbs.BidSubmitter
+		)
+
+		if cfg.SpamoorEnabled {
+			if !epbsAvailable {
+				return fmt.Errorf("--spamoor requires ePBS to be available (Gloas fork must be scheduled)")
+			}
+
+			if chainSpec.GloasForkVersion == nil {
+				return fmt.Errorf("--spamoor: chain spec missing GloasForkVersion")
+			}
+
+			logger.WithFields(logrus.Fields{
+				"gloas_fork_version": fmt.Sprintf("0x%x",
+					(*chainSpec.GloasForkVersion)[:]),
+				"genesis_validators_root": fmt.Sprintf("0x%x",
+					genesis.GenesisValidatorsRoot[:]),
+			}).Debug("Spamoor fork digest inputs")
+
+			logger.Info("Initializing spamoor (libp2p bid gossip)...")
+
+			spamoorSvc, err = spamoor.NewService(
+				&cfg.Spamoor,
+				*chainSpec.GloasForkVersion,
+				genesis.GenesisValidatorsRoot,
+				genesis.GenesisTime,
+				chainSpec.SecondsPerSlot,
+				logger,
+			)
+			if err != nil {
+				return fmt.Errorf("failed to initialize spamoor: %w", err)
+			}
+
+			if err := spamoorSvc.Start(ctx); err != nil {
+				return fmt.Errorf("failed to start spamoor: %w", err)
+			}
+			defer spamoorSvc.Stop()
+
+			bidSubmitter = spamoorSvc
+		}
+
 		if epbsAvailable {
 			logger.Info("Initializing ePBS service...")
 
-			epbsSvc, err = epbs.NewService(&cfg.EPBS, clClient, chainSvc, blsSigner, logger)
+			epbsSvc, err = epbs.NewService(&cfg.EPBS, clClient, chainSvc, blsSigner, bidSubmitter, logger)
 			if err != nil {
 				return fmt.Errorf("failed to initialize ePBS: %w", err)
 			}

go.mod

@@ -3,16 +3,23 @@ module github.com/ethpandaops/buildoor
 go 1.25.7
 
 require (
+	github.com/OffchainLabs/prysm/v7 v7.1.3
 	github.com/ethereum/go-ethereum v1.17.3-0.20260425183644-2249bebf5e88
 	github.com/ethpandaops/go-eth2-client v0.1.2-0.20260501105559-03ed5eacf583
 	github.com/ethpandaops/service-authenticatoor v0.0.0-20260430215651-f6b6f69d6711
 	github.com/golang-jwt/jwt/v5 v5.3.1
+	github.com/golang/snappy v1.0.0
 	github.com/gorilla/mux v1.8.1
 	github.com/herumi/bls-eth-go-binary v1.37.0
 	github.com/holiman/uint256 v1.3.2
+	github.com/libp2p/go-libp2p v0.48.0
+	github.com/libp2p/go-libp2p-mplex v0.11.0
+	github.com/libp2p/go-libp2p-pubsub v0.14.2
+	github.com/multiformats/go-multiaddr v0.16.1
 	github.com/pk910/dynamic-ssz v1.3.1
 	github.com/prometheus/client_golang v1.23.2
-	github.com/rs/zerolog v1.35.1
+	github.com/prysmaticlabs/fastssz v0.0.0-20251103153600-259302269bfc
+	github.com/rs/zerolog v1.35.0
 	github.com/sirupsen/logrus v1.9.4
 	github.com/spf13/cobra v1.10.2
 	github.com/spf13/viper v1.21.0
@@ -24,26 +31,41 @@ require (
 )
 
 require (
+	filippo.io/bigmod v0.1.1-0.20260103110540-f8a47775ebe5 // indirect
+	filippo.io/keygen v0.0.0-20260114151900-8e2790ea4c5b // indirect
+	github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c // indirect
 	github.com/KyleBanks/depth v1.2.1 // indirect
 	github.com/MicahParks/jwkset v0.11.0 // indirect
 	github.com/MicahParks/keyfunc/v3 v3.8.0 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/OffchainLabs/go-bitfield v0.0.0-20251031151322-f427d04d8506 // indirect
+	github.com/OffchainLabs/hashtree v0.2.3 // indirect
 	github.com/ProjectZKM/Ziren/crates/go-runtime/zkvm_runtime v0.0.0-20251001021608-1fe7b43fc4d6 // indirect
-	github.com/StackExchange/wmi v1.2.1 // indirect
+	github.com/aristanetworks/goarista v0.0.0-20200805130819-fd197cf57d96 // indirect
+	github.com/benbjohnson/clock v1.3.5 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/bits-and-blooms/bitset v1.20.0 // indirect
+	github.com/bits-and-blooms/bitset v1.22.0 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.3.4 // indirect
 	github.com/casbin/govaluate v1.10.0 // indirect
+	github.com/cenkalti/backoff/v5 v5.0.3 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/consensys/gnark-crypto v0.18.1 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.7 // indirect
 	github.com/crate-crypto/go-eth-kzg v1.5.0 // indirect
+	github.com/crate-crypto/go-kzg-4844 v1.1.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/deckarep/golang-set/v2 v2.6.0 // indirect
+	github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c // indirect
+	github.com/deckarep/golang-set/v2 v2.8.0 // indirect
 	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0 // indirect
+	github.com/dgraph-io/ristretto/v2 v2.2.0 // indirect
+	github.com/dunglas/httpsfv v1.1.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/emicklei/dot v1.6.2 // indirect
 	github.com/ethereum/c-kzg-4844/v2 v2.1.6 // indirect
 	github.com/fatih/color v1.16.0 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/ferranbt/fastssz v0.1.4 // indirect
+	github.com/flynn/noise v1.1.0 // indirect
 	github.com/fsnotify/fsnotify v1.9.0 // indirect
 	github.com/go-logr/logr v1.4.3 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
@@ -55,57 +77,161 @@ require (
 	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/goccy/go-yaml v1.9.2 // indirect
 	github.com/gofrs/flock v0.12.1 // indirect
-	github.com/golang/snappy v1.0.0 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang-jwt/jwt/v4 v4.5.2 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/grpc-ecosystem/grpc-gateway/v2 v2.27.7 // indirect
+	github.com/hashicorp/golang-lru v0.5.5-0.20210104140557-80c98217689d // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/huandu/go-clone v1.6.0 // indirect
+	github.com/huin/goupnp v1.3.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/ipfs/go-cid v0.5.0 // indirect
+	github.com/ipfs/go-log/v2 v2.5.1 // indirect
+	github.com/jackpal/go-nat-pmp v1.0.2 // indirect
+	github.com/jbenet/go-temp-err-catcher v0.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/k0kubun/go-ansi v0.0.0-20180517002512-3bf9e2903213 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
+	github.com/koron/go-ssdp v0.0.6 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/libp2p/go-buffer-pool v0.1.0 // indirect
+	github.com/libp2p/go-flow-metrics v0.2.0 // indirect
+	github.com/libp2p/go-libp2p-asn-util v0.4.1 // indirect
+	github.com/libp2p/go-mplex v0.7.0 // indirect
+	github.com/libp2p/go-msgio v0.3.0 // indirect
+	github.com/libp2p/go-netroute v0.4.0 // indirect
+	github.com/libp2p/go-reuseport v0.4.0 // indirect
+	github.com/libp2p/go-yamux/v5 v5.0.1 // indirect
+	github.com/logrusorgru/aurora v2.0.3+incompatible // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/marten-seemann/tcp v0.0.0-20210406111302-dfbc87cc63fd // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/minio/sha256-simd v1.0.0 // indirect
-	github.com/mitchellh/mapstructure v1.4.1 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/miekg/dns v1.1.66 // indirect
+	github.com/mikioh/tcpinfo v0.0.0-20190314235526-30a79bb1804b // indirect
+	github.com/mikioh/tcpopt v0.0.0-20190314235656-172688c1accc // indirect
+	github.com/minio/highwayhash v1.0.2 // indirect
+	github.com/minio/sha256-simd v1.0.1 // indirect
+	github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
+	github.com/mr-tron/base58 v1.2.0 // indirect
+	github.com/multiformats/go-base32 v0.1.0 // indirect
+	github.com/multiformats/go-base36 v0.2.0 // indirect
+	github.com/multiformats/go-multiaddr-dns v0.4.1 // indirect
+	github.com/multiformats/go-multiaddr-fmt v0.1.0 // indirect
+	github.com/multiformats/go-multibase v0.2.0 // indirect
+	github.com/multiformats/go-multicodec v0.9.1 // indirect
+	github.com/multiformats/go-multihash v0.2.3 // indirect
+	github.com/multiformats/go-multistream v0.6.1 // indirect
+	github.com/multiformats/go-varint v0.0.7 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
+	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
-	github.com/pion/dtls/v2 v2.2.12 // indirect
+	github.com/pion/datachannel v1.5.10 // indirect
+	github.com/pion/dtls/v3 v3.1.2 // indirect
+	github.com/pion/ice/v4 v4.0.10 // indirect
+	github.com/pion/interceptor v0.1.40 // indirect
 	github.com/pion/logging v0.2.4 // indirect
-	github.com/pion/transport/v2 v2.2.10 // indirect
+	github.com/pion/mdns/v2 v2.0.7 // indirect
+	github.com/pion/randutil v0.1.0 // indirect
+	github.com/pion/rtcp v1.2.16 // indirect
+	github.com/pion/rtp v1.8.19 // indirect
+	github.com/pion/sctp v1.8.39 // indirect
+	github.com/pion/sdp/v3 v3.0.18 // indirect
+	github.com/pion/srtp/v3 v3.0.6 // indirect
+	github.com/pion/stun/v3 v3.1.1 // indirect
 	github.com/pion/transport/v3 v3.0.7 // indirect
+	github.com/pion/transport/v4 v4.0.1 // indirect
+	github.com/pion/turn/v4 v4.0.2 // indirect
+	github.com/pion/webrtc/v4 v4.1.2 // indirect
 	github.com/pk910/hashtree-bindings v0.1.0 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.6.2 // indirect
 	github.com/prometheus/common v0.66.1 // indirect
 	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/prysmaticlabs/gohashtree v0.0.5-beta // indirect
+	github.com/prysmaticlabs/prombbolt v0.0.0-20210126082820-9b7adba6db7c // indirect
+	github.com/quic-go/qpack v0.6.0 // indirect
+	github.com/quic-go/quic-go v0.59.0 // indirect
+	github.com/quic-go/webtransport-go v0.10.0 // indirect
 	github.com/r3labs/sse/v2 v2.10.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/sagikazarmark/locafero v0.11.0 // indirect
-	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
+	github.com/schollz/progressbar/v3 v3.3.4 // indirect
+	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
 	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
 	github.com/spf13/afero v1.15.0 // indirect
 	github.com/spf13/cast v1.10.0 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/supranational/blst v0.3.16 // indirect
 	github.com/swaggo/files v0.0.0-20220610200504-28940afbdbfe // indirect
-	github.com/tklauser/go-sysconf v0.3.12 // indirect
-	github.com/tklauser/numcpus v0.6.1 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
+	github.com/thomaso-mirodin/intmath v0.0.0-20160323211736-5dc6d854e46e // indirect
+	github.com/tklauser/go-sysconf v0.3.15 // indirect
+	github.com/tklauser/numcpus v0.10.0 // indirect
+	github.com/urfave/cli/v2 v2.27.6 // indirect
+	github.com/wlynxg/anet v0.0.5 // indirect
+	github.com/xrash/smetrics v0.0.0-20240521201337-686a1a2994c1 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
+	go.etcd.io/bbolt v1.3.6 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.59.0 // indirect
 	go.opentelemetry.io/otel v1.40.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.40.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.40.0 // indirect
 	go.opentelemetry.io/otel/metric v1.40.0 // indirect
+	go.opentelemetry.io/otel/sdk v1.40.0 // indirect
 	go.opentelemetry.io/otel/trace v1.40.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.9.0 // indirect
+	go.uber.org/dig v1.19.0 // indirect
+	go.uber.org/fx v1.24.0 // indirect
+	go.uber.org/mock v0.5.2 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
 	go.yaml.in/yaml/v2 v2.4.2 // indirect
 	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/crypto v0.47.0 // indirect
-	golang.org/x/mod v0.31.0 // indirect
-	golang.org/x/net v0.49.0 // indirect
-	golang.org/x/sync v0.19.0 // indirect
-	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/text v0.33.0 // indirect
-	golang.org/x/time v0.9.0 // indirect
-	golang.org/x/tools v0.40.0 // indirect
+	golang.org/x/crypto v0.49.0 // indirect
+	golang.org/x/exp v0.0.0-20250606033433-dcc06ee1d476 // indirect
+	golang.org/x/mod v0.33.0 // indirect
+	golang.org/x/net v0.52.0 // indirect
+	golang.org/x/oauth2 v0.34.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
+	golang.org/x/sys v0.42.0 // indirect
+	golang.org/x/telemetry v0.0.0-20260209163413-e7419c687ee4 // indirect
+	golang.org/x/term v0.41.0 // indirect
+	golang.org/x/text v0.35.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
+	golang.org/x/tools v0.42.0 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20260427160629-7cedc36a6bc4 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20260427160629-7cedc36a6bc4 // indirect
+	google.golang.org/grpc v1.80.0 // indirect
 	google.golang.org/protobuf v1.36.11 // indirect
 	gopkg.in/cenkalti/backoff.v1 v1.1.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	k8s.io/apimachinery v0.30.4 // indirect
+	k8s.io/client-go v0.30.4 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+	k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect
+	lukechampine.com/blake3 v1.4.1 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
 )