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Number of open connections is configurable #170

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merged 2 commits into from
Oct 10, 2024
Merged

Number of open connections is configurable #170

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22df655
Add support for configurable connection limit
Maelkum Oct 1, 2024
c4929f1
Update grpc dependency to resolve a security issue
Maelkum Oct 1, 2024
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1 change: 1 addition & 0 deletions cmd/node/host.go
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ func createHost(log zerolog.Logger, cfg config.Config, role blockless.NodeRole,
host.WithMustReachBootNodes(cfg.Connectivity.MustReachBootNodes),
host.WithDisabledResourceLimits(cfg.Connectivity.DisableConnectionLimits),
host.WithEnableP2PRelay(role == blockless.HeadNode),
host.WithConnectionLimit(cfg.Connectivity.ConnectionCount),
}

// Create libp2p host.
Expand Down
3 changes: 3 additions & 0 deletions config/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,7 @@ type Connectivity struct {
NoDialbackPeers bool `koanf:"no-dialback-peers" flag:"no-dialback-peers"`
MustReachBootNodes bool `koanf:"must-reach-boot-nodes" flag:"must-reach-boot-nodes"`
DisableConnectionLimits bool `koanf:"disable-connection-limits" flag:"disable-connection-limits"`
ConnectionCount uint `koanf:"connection-count" flag:"connection-count"`
}

type Head struct {
Expand Down Expand Up @@ -157,6 +158,8 @@ func getFlagDescription(flag string) string {
return "port to use for websocket connections"
case "websocket-dialback-port":
return "external port that the b7s host will advertise for websocket connections"
case "connection-count":
return "maximum number of connections the b7s host will aim to have"
case "rest-api":
return "address where the head node REST API will listen on"
case "runtime-path":
Expand Down
16 changes: 8 additions & 8 deletions go.mod
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Original file line number Diff line number Diff line change
Expand Up @@ -116,12 +116,12 @@ require (
go.uber.org/dig v1.17.1 // indirect
go.uber.org/fx v1.21.0 // indirect
go.uber.org/mock v0.4.0 // indirect
golang.org/x/text v0.16.0 // indirect
golang.org/x/text v0.18.0 // indirect
golang.org/x/time v0.5.0 // indirect
gonum.org/v1/gonum v0.14.0 // indirect
google.golang.org/genproto/googleapis/api v0.0.0-20240520151616-dc85e6b867a5 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20240515191416-fc5f0ca64291 // indirect
google.golang.org/grpc v1.64.0 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20240930140551-af27646dc61f // indirect
google.golang.org/grpc v1.64.1 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

Expand Down Expand Up @@ -209,14 +209,14 @@ require (
go.opencensus.io v0.24.0 // indirect
go.uber.org/multierr v1.11.0 // indirect
go.uber.org/zap v1.27.0 // indirect
golang.org/x/crypto v0.24.0 // indirect
golang.org/x/crypto v0.27.0 // indirect
golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
golang.org/x/mod v0.18.0 // indirect
golang.org/x/net v0.26.0 // indirect
golang.org/x/sync v0.7.0
golang.org/x/sys v0.21.0
golang.org/x/net v0.29.0 // indirect
golang.org/x/sync v0.8.0
golang.org/x/sys v0.25.0
golang.org/x/tools v0.22.0 // indirect
google.golang.org/protobuf v1.34.1 // indirect
google.golang.org/protobuf v1.34.2 // indirect
lukechampine.com/blake3 v1.2.2 // indirect
)

Expand Down
32 changes: 16 additions & 16 deletions go.sum
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Original file line number Diff line number Diff line change
Expand Up @@ -721,8 +721,8 @@ golang.org/x/crypto v0.10.0/go.mod h1:o4eNf7Ede1fv+hwOwZsTHl9EsPFO6q6ZvYR8vYfY45
golang.org/x/crypto v0.11.0/go.mod h1:xgJhtzW8F9jGdVFWZESrid1U1bjeNy4zgy5cRr/CIio=
golang.org/x/crypto v0.12.0/go.mod h1:NF0Gs7EO5K4qLn+Ylc+fih8BSTeIjAP05siRnAh98yw=
golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
golang.org/x/crypto v0.24.0 h1:mnl8DM0o513X8fdIkmyFE/5hTYxbwYOjDS/+rK6qpRI=
golang.org/x/crypto v0.24.0/go.mod h1:Z1PMYSOR5nyMcyAVAIQSKCDwalqy85Aqn1x3Ws4L5DM=
golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 h1:vr/HnozRka3pE4EsMEg1lgkXJkTFJCVUX+S/ZT6wYzM=
golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842/go.mod h1:XtvwrStGgqGPLc4cjQfWqZHG1YFdYs6swckp8vpsjnc=
Expand Down Expand Up @@ -773,8 +773,8 @@ golang.org/x/net v0.11.0/go.mod h1:2L/ixqYpgIVXmeoSA/4Lu7BzTG4KIyPIryS4IsOd1oQ=
golang.org/x/net v0.13.0/go.mod h1:zEVYFnQC7m/vmpQFELhcD1EWkZlX69l4oqgmer6hfKA=
golang.org/x/net v0.14.0/go.mod h1:PpSgVXXLK0OxS0F31C1/tv6XNguvCrnXIDrFMspZIUI=
golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20181017192945-9dcd33a902f4/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
Expand All @@ -790,8 +790,8 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.0.0-20180810173357-98c5dad5d1a0/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
Expand Down Expand Up @@ -838,8 +838,8 @@ golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.21.0 h1:rF+pYz3DAGSQAxAu1CbC7catZg4ebC4UIeIhKxBZvws=
golang.org/x/sys v0.21.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
Expand All @@ -863,8 +863,8 @@ golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.11.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.12.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
golang.org/x/text v0.18.0 h1:XvMDiNzPAl0jr17s6W9lcaIhGUfUORdGCNsuLmPG224=
golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk=
Expand Down Expand Up @@ -913,8 +913,8 @@ google.golang.org/genproto v0.0.0-20200324203455-a04cca1dde73/go.mod h1:55QSHmfG
google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
google.golang.org/genproto/googleapis/api v0.0.0-20240520151616-dc85e6b867a5 h1:P8OJ/WCl/Xo4E4zoe4/bifHpSmmKwARqyqE4nW6J2GQ=
google.golang.org/genproto/googleapis/api v0.0.0-20240520151616-dc85e6b867a5/go.mod h1:RGnPtTG7r4i8sPlNyDeikXF99hMM+hN6QMm4ooG9g2g=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240515191416-fc5f0ca64291 h1:AgADTJarZTBqgjiUzRgfaBchgYB3/WFTC80GPwsMcRI=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240515191416-fc5f0ca64291/go.mod h1:EfXuqaE1J41VCDicxHzUDm+8rk+7ZdXzHV0IhO/I6s0=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240930140551-af27646dc61f h1:cUMEy+8oS78BWIH9OWazBkzbr090Od9tWBNtZHkOhf0=
google.golang.org/genproto/googleapis/rpc v0.0.0-20240930140551-af27646dc61f/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw=
google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
Expand All @@ -924,8 +924,8 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
google.golang.org/grpc v1.64.0 h1:KH3VH9y/MgNQg1dE7b3XfVK0GsPSIzJwdF617gUSbvY=
google.golang.org/grpc v1.64.0/go.mod h1:oxjF8E3FBnjp+/gVFYdWacaLDx9na1aqy9oovLpxQYg=
google.golang.org/grpc v1.64.1 h1:LKtvyfbX3UGVPFcGqJ9ItpVWW6oN/2XqTxfAnwRRXiA=
google.golang.org/grpc v1.64.1/go.mod h1:hiQF4LFZelK2WKaP6W0L92zGHtiQdZxk8CrSdvyjeP0=
google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
Expand All @@ -937,8 +937,8 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
google.golang.org/protobuf v1.34.1 h1:9ddQBjfCyZPOHPUiPxpYESBLc+T8P3E+Vo4IbKZgFWg=
google.golang.org/protobuf v1.34.1/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
Expand Down
9 changes: 9 additions & 0 deletions host/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ type Config struct {
DialBackPeers []blockless.Peer
DialBackPeersLimit uint
DiscoveryInterval time.Duration
ConnectionLimit uint

Websocket bool
WebsocketPort uint
Expand Down Expand Up @@ -145,3 +146,11 @@ func WithEnableP2PRelay(b bool) func(cfg *Config) {
cfg.EnableP2PRelay = b
}
}

// WithConnectionLimit will specify the connection count threshold.
// We allow this limit to be surpassed by 20% before trimming back to this limit.
func WithConnectionLimit(n uint) func(cfg *Config) {
return func(cfg *Config) {
cfg.ConnectionLimit = n
}
}
25 changes: 25 additions & 0 deletions host/host.go
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,9 @@ import (
pubsub "github.com/libp2p/go-libp2p-pubsub"
"github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/host"
"github.com/libp2p/go-libp2p/core/peer"
rcmgr "github.com/libp2p/go-libp2p/p2p/host/resource-manager"
"github.com/libp2p/go-libp2p/p2p/net/connmgr"
"github.com/libp2p/go-libp2p/p2p/protocol/circuitv2/relay"
webrtc "github.com/libp2p/go-libp2p/p2p/transport/webrtc"
ma "github.com/multiformats/go-multiaddr"
Expand Down Expand Up @@ -122,6 +124,29 @@ func New(log zerolog.Logger, address string, port uint, options ...func(*Config)
opts = append(opts, addrFactory)
}

if cfg.ConnectionLimit > 0 {

lo := cfg.ConnectionLimit
hi := float64(cfg.ConnectionLimit) * 1.2

cm, err := connmgr.NewConnManager(int(lo), int(hi))
if err != nil {
return nil, fmt.Errorf("could not create connection manager (lo: %v, hi: %v)", lo, hi)
}

// Protect boot nodes from pruning.
for _, addr := range cfg.BootNodes {
info, err := peer.AddrInfoFromP2pAddr(addr)
if err != nil {
continue
}

cm.Protect(info.ID, "boot-node")
}

opts = append(opts, libp2p.ConnectionManager(cm))
}

// Create libp2p host.
h, err := libp2p.New(opts...)
if err != nil {
Expand Down
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