mirror of
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5d712166b2
This adds simple check that will scream loud and clear every time go-libp2p libraries change any of the implicit defaults related to go-libp2p-resource-manager
657 lines
16 KiB
Go
657 lines
16 KiB
Go
package libp2p
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import (
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"encoding/json"
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"fmt"
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"math/bits"
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"strings"
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config "github.com/ipfs/go-ipfs/config"
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"github.com/libp2p/go-libp2p"
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rcmgr "github.com/libp2p/go-libp2p-resource-manager"
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"github.com/wI2L/jsondiff"
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)
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// This file defines implicit limit defaults used when Swarm.ResourceMgr.Enabled
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// adjustedDefaultLimits allows for tweaking defaults based on external factors,
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// such as values in Swarm.ConnMgr.HiWater config.
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func adjustedDefaultLimits(cfg config.SwarmConfig) rcmgr.DefaultLimitConfig {
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// Run checks to avoid introducing regressions
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checkImplicitDefaults()
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// Return to use unmodified static limits based on values from go-libp2p 0.18
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// return defaultLimits
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// Adjust limits
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// (based on https://github.com/filecoin-project/lotus/pull/8318/files)
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// - give it more memory, up to 4G, min of 1G
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// - if Swarm.ConnMgr.HighWater is too high, adjust Conn/FD/Stream limits
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defaultLimits := rcmgr.DefaultLimits.WithSystemMemory(.125, 1<<30, 4<<30)
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// Do we need to adjust due to Swarm.ConnMgr.HighWater?
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if cfg.ConnMgr.Type == "basic" {
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maxconns := cfg.ConnMgr.HighWater
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if 2*maxconns > defaultLimits.SystemBaseLimit.ConnsInbound {
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// adjust conns to 2x to allow for two conns per peer (TCP+QUIC)
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defaultLimits.SystemBaseLimit.ConnsInbound = logScale(2 * maxconns)
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defaultLimits.SystemBaseLimit.ConnsOutbound = logScale(2 * maxconns)
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defaultLimits.SystemBaseLimit.Conns = logScale(4 * maxconns)
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defaultLimits.SystemBaseLimit.StreamsInbound = logScale(16 * maxconns)
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defaultLimits.SystemBaseLimit.StreamsOutbound = logScale(64 * maxconns)
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defaultLimits.SystemBaseLimit.Streams = logScale(64 * maxconns)
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if 2*maxconns > defaultLimits.SystemBaseLimit.FD {
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defaultLimits.SystemBaseLimit.FD = logScale(2 * maxconns)
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}
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defaultLimits.ServiceBaseLimit.StreamsInbound = logScale(8 * maxconns)
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defaultLimits.ServiceBaseLimit.StreamsOutbound = logScale(32 * maxconns)
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defaultLimits.ServiceBaseLimit.Streams = logScale(32 * maxconns)
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defaultLimits.ProtocolBaseLimit.StreamsInbound = logScale(8 * maxconns)
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defaultLimits.ProtocolBaseLimit.StreamsOutbound = logScale(32 * maxconns)
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defaultLimits.ProtocolBaseLimit.Streams = logScale(32 * maxconns)
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}
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}
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return defaultLimits
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}
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func logScale(val int) int {
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bitlen := bits.Len(uint(val))
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return 1 << bitlen
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}
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// checkImplicitDefaults compares libp2p defaults agains expected ones
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// and panics when they don't match. This ensures we are not surprised
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// by silent default limit changes when we update go-libp2p dependencies.
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func checkImplicitDefaults() {
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ok := true
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// Check 1: did go-libp2p-resource-manager's DefaultLimits change?
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defaults, err := json.Marshal(rcmgr.DefaultLimits)
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if err != nil {
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log.Fatal(err)
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}
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changes, err := jsonDiff([]byte(expectedDefaultLimits), defaults)
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if err != nil {
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log.Fatal(err)
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}
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if len(changes) > 0 {
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ok = false
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log.Errorf("===> OOF! go-libp2p-resource-manager changed DefaultLimits\n"+
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"=> changes ('test' represents the old value):\n%s\n"+
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"=> go-libp2p-resource-manager DefaultLimits update needs a review:\n"+
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"Please inspect if changes impact go-ipfs users, and update expectedDefaultLimits in rcmgr_defaults.go to remove this message",
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strings.Join(changes, "\n"),
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)
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}
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// Check 2: did go-libp2p's SetDefaultServiceLimits change?
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testLimiter := rcmgr.NewStaticLimiter(rcmgr.DefaultLimits)
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libp2p.SetDefaultServiceLimits(testLimiter)
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serviceDefaults, err := json.Marshal(testLimiter)
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if err != nil {
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log.Fatal(err)
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}
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changes, err = jsonDiff([]byte(expectedDefaultServiceLimits), serviceDefaults)
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if err != nil {
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log.Fatal(err)
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}
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if len(changes) > 0 {
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ok = false
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log.Errorf("===> OOF! go-libp2p changed DefaultServiceLimits\n"+
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"=> changes ('test' represents the old value):\n%s\n"+
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"=> go-libp2p SetDefaultServiceLimits update needs a review:\n"+
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"Please inspect if changes impact go-ipfs users, and update expectedDefaultServiceLimits in rcmgr_defaults.go to remove this message",
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strings.Join(changes, "\n"),
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)
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}
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if !ok {
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log.Fatal("daemon will refuse to run with the resource manager until this is resolved")
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}
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}
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// jsonDiff compares two strings and returns diff in JSON Patch format
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func jsonDiff(old []byte, updated []byte) ([]string, error) {
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// generate 'invertible' patch which includes old values as "test" op
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patch, err := jsondiff.CompareJSONOpts(old, updated, jsondiff.Invertible())
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changes := make([]string, len(patch))
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if err != nil {
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return changes, err
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}
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for i, op := range patch {
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changes[i] = fmt.Sprintf(" %s", op)
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}
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return changes, nil
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}
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// https://github.com/libp2p/go-libp2p-resource-manager/blob/v0.1.5/limit_defaults.go#L49
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const expectedDefaultLimits = `{
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"SystemBaseLimit": {
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"Streams": 16384,
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"StreamsInbound": 4096,
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"StreamsOutbound": 16384,
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"Conns": 1024,
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"ConnsInbound": 256,
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"ConnsOutbound": 1024,
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"FD": 512
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},
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"SystemMemory": {
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"MemoryFraction": 0.125,
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"MinMemory": 134217728,
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"MaxMemory": 1073741824
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},
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"TransientBaseLimit": {
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"Streams": 512,
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"StreamsInbound": 128,
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"StreamsOutbound": 512,
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"Conns": 128,
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"ConnsInbound": 32,
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"ConnsOutbound": 128,
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"FD": 128
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},
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"TransientMemory": {
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"MemoryFraction": 1,
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"MinMemory": 67108864,
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"MaxMemory": 67108864
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},
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"ServiceBaseLimit": {
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"Streams": 8192,
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"StreamsInbound": 2048,
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"StreamsOutbound": 8192,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0
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},
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"ServiceMemory": {
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"MemoryFraction": 0.03125,
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"MinMemory": 67108864,
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"MaxMemory": 268435456
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},
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"ServicePeerBaseLimit": {
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"Streams": 512,
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"StreamsInbound": 256,
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"StreamsOutbound": 512,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0
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},
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"ServicePeerMemory": {
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"MemoryFraction": 0.0078125,
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"MinMemory": 16777216,
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"MaxMemory": 67108864
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},
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"ProtocolBaseLimit": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0
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},
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"ProtocolMemory": {
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"MemoryFraction": 0.015625,
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"MinMemory": 67108864,
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"MaxMemory": 134217728
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},
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"ProtocolPeerBaseLimit": {
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"Streams": 512,
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"StreamsInbound": 128,
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"StreamsOutbound": 256,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0
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},
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"ProtocolPeerMemory": {
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"MemoryFraction": 0.0078125,
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"MinMemory": 16777216,
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"MaxMemory": 67108864
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},
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"PeerBaseLimit": {
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"Streams": 1024,
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"StreamsInbound": 512,
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"StreamsOutbound": 1024,
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"Conns": 16,
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"ConnsInbound": 8,
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"ConnsOutbound": 16,
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"FD": 8
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},
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"PeerMemory": {
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"MemoryFraction": 0.0078125,
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"MinMemory": 67108864,
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"MaxMemory": 134217728
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},
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"ConnBaseLimit": {
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"Streams": 0,
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"StreamsInbound": 0,
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"StreamsOutbound": 0,
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"Conns": 1,
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"ConnsInbound": 1,
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"ConnsOutbound": 1,
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"FD": 1
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},
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"ConnMemory": 1048576,
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"StreamBaseLimit": {
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"Streams": 1,
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"StreamsInbound": 1,
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"StreamsOutbound": 1,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0
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},
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"StreamMemory": 16777216
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}`
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// https://github.com/libp2p/go-libp2p/blob/v0.18.0/limits.go#L17
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const expectedDefaultServiceLimits = `{
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"SystemLimits": {
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"Streams": 16384,
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"StreamsInbound": 4096,
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"StreamsOutbound": 16384,
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"Conns": 1024,
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"ConnsInbound": 256,
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"ConnsOutbound": 1024,
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"FD": 512,
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"Memory": 1073741824
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},
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"TransientLimits": {
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"Streams": 512,
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"StreamsInbound": 128,
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"StreamsOutbound": 512,
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"Conns": 128,
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"ConnsInbound": 32,
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"ConnsOutbound": 128,
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"FD": 128,
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"Memory": 67108864
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},
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"DefaultServiceLimits": {
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"Streams": 8192,
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"StreamsInbound": 2048,
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"StreamsOutbound": 8192,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"DefaultServicePeerLimits": {
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"Streams": 512,
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"StreamsInbound": 256,
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"StreamsOutbound": 512,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 16777216
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},
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"ServiceLimits": {
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"libp2p.autonat": {
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"Streams": 128,
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"StreamsInbound": 128,
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"StreamsOutbound": 128,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"libp2p.holepunch": {
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"Streams": 256,
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"StreamsInbound": 128,
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"StreamsOutbound": 128,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"libp2p.identify": {
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"Streams": 256,
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"StreamsInbound": 128,
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"StreamsOutbound": 128,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"libp2p.ping": {
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"Streams": 128,
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"StreamsInbound": 128,
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"StreamsOutbound": 128,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"libp2p.relay/v1": {
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"Streams": 1024,
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"StreamsInbound": 1024,
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"StreamsOutbound": 1024,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"libp2p.relay/v2": {
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"Streams": 1024,
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"StreamsInbound": 1024,
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"StreamsOutbound": 1024,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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}
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},
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"ServicePeerLimits": {
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"libp2p.autonat": {
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"Streams": 2,
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"StreamsInbound": 2,
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"StreamsOutbound": 2,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 557056
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},
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"libp2p.holepunch": {
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"Streams": 2,
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"StreamsInbound": 2,
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"StreamsOutbound": 2,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 557056
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},
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"libp2p.identify": {
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"Streams": 32,
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"StreamsInbound": 16,
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"StreamsOutbound": 16,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 8912896
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},
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"libp2p.ping": {
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"Streams": 4,
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"StreamsInbound": 2,
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"StreamsOutbound": 3,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 1114112
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},
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"libp2p.relay/v1": {
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"Streams": 64,
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"StreamsInbound": 64,
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"StreamsOutbound": 64,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 17825792
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},
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"libp2p.relay/v2": {
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"Streams": 64,
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"StreamsInbound": 64,
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"StreamsOutbound": 64,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 17825792
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}
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},
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"DefaultProtocolLimits": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"DefaultProtocolPeerLimits": {
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"Streams": 512,
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"StreamsInbound": 128,
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"StreamsOutbound": 256,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 16777216
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},
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"ProtocolLimits": {
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"/ipfs/id/1.0.0": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 33554432
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},
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"/ipfs/id/push/1.0.0": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 33554432
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},
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"/ipfs/ping/1.0.0": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"/libp2p/autonat/1.0.0": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"/libp2p/circuit/relay/0.1.0": {
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"Streams": 1280,
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"StreamsInbound": 1280,
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"StreamsOutbound": 1280,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"/libp2p/circuit/relay/0.2.0/hop": {
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"Streams": 1280,
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"StreamsInbound": 1280,
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"StreamsOutbound": 1280,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"/libp2p/circuit/relay/0.2.0/stop": {
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"Streams": 1280,
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"StreamsInbound": 1280,
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"StreamsOutbound": 1280,
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"Conns": 0,
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"ConnsInbound": 0,
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"ConnsOutbound": 0,
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"FD": 0,
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"Memory": 67108864
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},
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"/libp2p/dcutr": {
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"Streams": 4096,
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"StreamsInbound": 1024,
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"StreamsOutbound": 4096,
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"Conns": 0,
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"ConnsInbound": 0,
|
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}
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}`
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