config: disallow ThrottlerConfig.MaxRecheckDelay < 1 ms (ava-labs#1435)

Author: gyuho

config/config.go

@@ -433,6 +433,10 @@ func getNetworkConfig(
 		return network.Config{}, fmt.Errorf("%q must be >= 0", OutboundConnectionTimeoutKey)
 	case config.PeerListGossipFreq < 0:
 		return network.Config{}, fmt.Errorf("%s must be >= 0", NetworkPeerListGossipFreqKey)
+	case config.ThrottlerConfig.InboundMsgThrottlerConfig.CPUThrottlerConfig.MaxRecheckDelay < constants.MinInboundThrottlerMaxRecheckDelay:
+		return network.Config{}, fmt.Errorf("%s must be >= %d", InboundThrottlerCPUMaxRecheckDelayKey, constants.MinInboundThrottlerMaxRecheckDelay)
+	case config.ThrottlerConfig.InboundMsgThrottlerConfig.DiskThrottlerConfig.MaxRecheckDelay < constants.MinInboundThrottlerMaxRecheckDelay:
+		return network.Config{}, fmt.Errorf("%s must be >= %d", InboundThrottlerDiskMaxRecheckDelayKey, constants.MinInboundThrottlerMaxRecheckDelay)
 	case config.MaxReconnectDelay < 0:
 		return network.Config{}, fmt.Errorf("%s must be >= 0", NetworkMaxReconnectDelayKey)
 	case config.InitialReconnectDelay < 0:

utils/constants/networking.go

@@ -100,6 +100,7 @@ const (
 	DefaultInboundThrottlerBandwidthMaxBurstSize    = DefaultMaxMessageSize
 	DefaultInboundThrottlerCPUMaxRecheckDelay       = 5 * time.Second
 	DefaultInboundThrottlerDiskMaxRecheckDelay      = 5 * time.Second
+	MinInboundThrottlerMaxRecheckDelay              = time.Millisecond
 
 	// Outbound Throttling
 	DefaultOutboundThrottlerAtLargeAllocSize    = 32 * units.MiB