add delay before broadcasting lc objects (#15776)

* add delay before broadcasting lc objects

* address commments

* address commments

* reduce test runtime

config/params/BUILD.bazel

@@ -3,6 +3,7 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
     name = "go_default_library",
     srcs = [
+        "basis_points.go",
         "config.go",
         "config_utils_develop.go",  # keep
         "config_utils_prod.go",

config/params/basis_points.go

@@ -0,0 +1,10 @@
+package params
+
+import "github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
+
+const BasisPoints = primitives.BP(10000)
+
+// SlotBP returns the basis points for a given slot.
+func SlotBP() primitives.BP {
+	return primitives.BP(12000)
+}

config/params/config.go

@@ -223,6 +223,7 @@ type BeaconChainConfig struct {
 	// Light client
 	MinSyncCommitteeParticipants uint64 `yaml:"MIN_SYNC_COMMITTEE_PARTICIPANTS" spec:"true"`  // MinSyncCommitteeParticipants defines the minimum amount of sync committee participants for which the light client acknowledges the signature.
 	MaxRequestLightClientUpdates uint64 `yaml:"MAX_REQUEST_LIGHT_CLIENT_UPDATES" spec:"true"` // MaxRequestLightClientUpdates defines the maximum amount of light client updates that can be requested in a single request.
+	SyncMessageDueBPS            uint64 `yaml:"SYNC_MESSAGE_DUE_BPS" spec:"true"`             // SyncMessageDueBPS defines the due time for a sync message.
 
 	// Bellatrix
 	TerminalBlockHash                common.Hash      `yaml:"TERMINAL_BLOCK_HASH" spec:"true"`                  // TerminalBlockHash of beacon chain.

config/params/loader_test.go

@@ -64,7 +64,6 @@ var placeholderFields = []string{
 	"PROPOSER_SCORE_BOOST_EIP7732",
 	"PROPOSER_SELECTION_GAP",
 	"SLOT_DURATION_MS",
-	"SYNC_MESSAGE_DUE_BPS",
 	"SYNC_MESSAGE_DUE_BPS_GLOAS",
 	"TARGET_NUMBER_OF_PEERS",
 	"UPDATE_TIMEOUT",
@@ -102,6 +101,7 @@ func assertEqualConfigs(t *testing.T, name string, fields []string, expected, ac
 	assert.Equal(t, expected.HysteresisQuotient, actual.HysteresisQuotient, "%s: HysteresisQuotient", name)
 	assert.Equal(t, expected.HysteresisDownwardMultiplier, actual.HysteresisDownwardMultiplier, "%s: HysteresisDownwardMultiplier", name)
 	assert.Equal(t, expected.HysteresisUpwardMultiplier, actual.HysteresisUpwardMultiplier, "%s: HysteresisUpwardMultiplier", name)
+	assert.Equal(t, expected.SyncMessageDueBPS, actual.SyncMessageDueBPS, "%s: SyncMessageDueBPS", name)
 
 	// Validator params.
 	assert.Equal(t, expected.Eth1FollowDistance, actual.Eth1FollowDistance, "%s: Eth1FollowDistance", name)

config/params/mainnet_config.go

@@ -257,6 +257,7 @@ var mainnetBeaconConfig = &BeaconChainConfig{
 	// Light client
 	MinSyncCommitteeParticipants: 1,
 	MaxRequestLightClientUpdates: 128,
+	SyncMessageDueBPS:            3333,
 
 	// Bellatrix
 	TerminalBlockHashActivationEpoch: 18446744073709551615,