mirror of
https://github.com/yggdrasil-network/yggdrasil-go.git
synced 2024-11-23 01:55:20 +00:00
update ironwood dependency, fix ansible code, go mod tidy
This commit is contained in:
Arceliar
parent
018f35d9a2
commit
6bc2044ced
@ -1,61 +0,0 @@
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package main
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import (
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"fmt"
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"sort"
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"time"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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)
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func doListen(recvNode *simNode) {
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// TODO be able to stop the listeners somehow so they don't leak across different tests
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for {
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c, err := recvNode.listener.Accept()
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if err != nil {
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panic(err)
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}
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c.Close()
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}
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}
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func dialTest(sendNode, recvNode *simNode) {
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if sendNode.id == recvNode.id {
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fmt.Println("Skipping dial to self")
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return
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}
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var mask crypto.NodeID
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for idx := range mask {
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mask[idx] = 0xff
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}
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for {
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c, err := sendNode.dialer.DialByNodeIDandMask(nil, &recvNode.nodeID, &mask)
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if c != nil {
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c.Close()
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return
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}
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if err != nil {
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fmt.Println("Dial failed:", err)
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}
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time.Sleep(time.Second)
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}
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}
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func dialStore(store nodeStore) {
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var nodeIdxs []int
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for idx, n := range store {
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nodeIdxs = append(nodeIdxs, idx)
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go doListen(n)
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}
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sort.Slice(nodeIdxs, func(i, j int) bool {
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return nodeIdxs[i] < nodeIdxs[j]
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})
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for _, idx := range nodeIdxs {
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sendNode := store[idx]
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for _, jdx := range nodeIdxs {
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recvNode := store[jdx]
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fmt.Printf("Dialing from node %d to node %d / %d...\n", idx, jdx, len(store))
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dialTest(sendNode, recvNode)
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}
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}
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}
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@ -1,6 +0,0 @@
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package main
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func main() {
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store := makeStoreSquareGrid(4)
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dialStore(store)
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}
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@ -1,28 +0,0 @@
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package main
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import (
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"io/ioutil"
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"github.com/gologme/log"
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"github.com/yggdrasil-network/yggdrasil-go/src/config"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
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)
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type simNode struct {
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core yggdrasil.Core
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id int
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nodeID crypto.NodeID
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dialer *yggdrasil.Dialer
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listener *yggdrasil.Listener
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}
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func newNode(id int) *simNode {
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n := simNode{id: id}
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n.core.Start(config.GenerateConfig(), log.New(ioutil.Discard, "", 0))
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n.nodeID = *n.core.NodeID()
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n.dialer, _ = n.core.ConnDialer()
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n.listener, _ = n.core.ConnListen()
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return &n
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}
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@ -1,41 +0,0 @@
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package main
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type nodeStore map[int]*simNode
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func makeStoreSingle() nodeStore {
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s := make(nodeStore)
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s[0] = newNode(0)
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return s
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}
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func linkNodes(a *simNode, b *simNode) {
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la := a.core.NewSimlink()
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lb := b.core.NewSimlink()
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la.SetDestination(lb)
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lb.SetDestination(la)
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la.Start()
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lb.Start()
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}
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func makeStoreSquareGrid(sideLength int) nodeStore {
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store := make(nodeStore)
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nNodes := sideLength * sideLength
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idxs := make([]int, 0, nNodes)
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// TODO shuffle nodeIDs
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for idx := 1; idx <= nNodes; idx++ {
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idxs = append(idxs, idx)
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}
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for _, idx := range idxs {
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n := newNode(idx)
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store[idx] = n
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}
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for idx := 0; idx < nNodes; idx++ {
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if (idx % sideLength) != 0 {
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linkNodes(store[idxs[idx]], store[idxs[idx-1]])
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}
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if idx >= sideLength {
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linkNodes(store[idxs[idx]], store[idxs[idx-sideLength]])
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}
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}
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return store
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}
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@ -6,6 +6,7 @@ This file generates crypto keys for [ansible-yggdrasil](https://github.com/jcgru
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package main
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import (
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"crypto/ed25519"
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"encoding/hex"
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"flag"
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"fmt"
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@ -14,7 +15,6 @@ import (
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"github.com/cheggaaa/pb/v3"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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)
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var numHosts = flag.Int("hosts", 1, "number of host vars to generate")
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@ -23,7 +23,6 @@ var keyTries = flag.Int("tries", 1000, "number of tries before taking the best k
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type keySet struct {
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priv []byte
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pub []byte
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id []byte
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ip string
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}
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@ -37,27 +36,15 @@ func main() {
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return
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}
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var encryptionKeys []keySet
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var keys []keySet
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for i := 0; i < *numHosts+1; i++ {
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encryptionKeys = append(encryptionKeys, newBoxKey())
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keys = append(keys, newKey())
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bar.Increment()
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}
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encryptionKeys = sortKeySetArray(encryptionKeys)
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keys = sortKeySetArray(keys)
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for i := 0; i < *keyTries-*numHosts-1; i++ {
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encryptionKeys[0] = newBoxKey()
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encryptionKeys = bubbleUpTo(encryptionKeys, 0)
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bar.Increment()
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}
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var signatureKeys []keySet
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for i := 0; i < *numHosts+1; i++ {
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signatureKeys = append(signatureKeys, newSigKey())
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bar.Increment()
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}
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signatureKeys = sortKeySetArray(signatureKeys)
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for i := 0; i < *keyTries-*numHosts-1; i++ {
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signatureKeys[0] = newSigKey()
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signatureKeys = bubbleUpTo(signatureKeys, 0)
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keys[0] = newKey()
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keys = bubbleUpTo(keys, 0)
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bar.Increment()
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}
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@ -70,43 +57,36 @@ func main() {
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return
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}
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defer file.Close()
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file.WriteString(fmt.Sprintf("yggdrasil_encryption_public_key: %v\n", hex.EncodeToString(encryptionKeys[i].pub)))
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file.WriteString("yggdrasil_encryption_private_key: \"{{ vault_yggdrasil_encryption_private_key }}\"\n")
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file.WriteString(fmt.Sprintf("yggdrasil_signing_public_key: %v\n", hex.EncodeToString(signatureKeys[i].pub)))
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file.WriteString("yggdrasil_signing_private_key: \"{{ vault_yggdrasil_signing_private_key }}\"\n")
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file.WriteString(fmt.Sprintf("ansible_host: %v\n", encryptionKeys[i].ip))
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file.WriteString(fmt.Sprintf("yggdrasil_public_key: %v\n", hex.EncodeToString(keys[i].pub)))
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file.WriteString("yggdrasil_private_key: \"{{ vault_yggdrasil_private_key }}\"\n")
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file.WriteString(fmt.Sprintf("ansible_host: %v\n", keys[i].ip))
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file, err = os.Create(fmt.Sprintf("host_vars/%x/vault", i))
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if err != nil {
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return
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}
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defer file.Close()
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file.WriteString(fmt.Sprintf("vault_yggdrasil_encryption_private_key: %v\n", hex.EncodeToString(encryptionKeys[i].priv)))
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file.WriteString(fmt.Sprintf("vault_yggdrasil_signing_private_key: %v\n", hex.EncodeToString(signatureKeys[i].priv)))
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file.WriteString(fmt.Sprintf("vault_yggdrasil_private_key: %v\n", hex.EncodeToString(keys[i].priv)))
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bar.Increment()
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}
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bar.Finish()
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}
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func newBoxKey() keySet {
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pub, priv := crypto.NewBoxKeys()
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id := crypto.GetNodeID(pub)
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ip := net.IP(address.AddrForNodeID(id)[:]).String()
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return keySet{priv[:], pub[:], id[:], ip}
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}
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func newSigKey() keySet {
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pub, priv := crypto.NewSigKeys()
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id := crypto.GetTreeID(pub)
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return keySet{priv[:], pub[:], id[:], ""}
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func newKey() keySet {
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pub, priv, err := ed25519.GenerateKey(nil)
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if err != nil {
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panic(err)
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}
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ip := net.IP(address.AddrForKey(pub)[:]).String()
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return keySet{priv[:], pub[:], ip}
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}
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func isBetter(oldID, newID []byte) bool {
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for idx := range oldID {
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if newID[idx] > oldID[idx] {
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if newID[idx] < oldID[idx] {
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return true
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}
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if newID[idx] < oldID[idx] {
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if newID[idx] > oldID[idx] {
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return false
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}
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}
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@ -122,7 +102,7 @@ func sortKeySetArray(sets []keySet) []keySet {
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func bubbleUpTo(sets []keySet, num int) []keySet {
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for i := 0; i < len(sets)-num-1; i++ {
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if isBetter(sets[i+1].id, sets[i].id) {
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if isBetter(sets[i+1].pub, sets[i].pub) {
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var tmp = sets[i]
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sets[i] = sets[i+1]
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sets[i+1] = tmp
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3
go.mod
3
go.mod
@ -3,7 +3,7 @@ module github.com/yggdrasil-network/yggdrasil-go
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go 1.16
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require (
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github.com/Arceliar/ironwood v0.0.0-20210519013150-a5401869b037
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github.com/Arceliar/ironwood v0.0.0-20210523223424-d320cf0ed78e
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github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979
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github.com/cheggaaa/pb/v3 v3.0.6
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github.com/fatih/color v1.10.0 // indirect
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@ -16,7 +16,6 @@ require (
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github.com/rivo/uniseg v0.2.0 // indirect
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github.com/vishvananda/netlink v1.1.0
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github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
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golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110
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golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b
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golang.org/x/text v0.3.6-0.20210220033129-8f690f22cf1c
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4
go.sum
4
go.sum
@ -1,5 +1,5 @@
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github.com/Arceliar/ironwood v0.0.0-20210519013150-a5401869b037 h1:SQ7opLc8dCNAgyYIeVZUGwvZ5YrfqRLHMwOGWfH/S/k=
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github.com/Arceliar/ironwood v0.0.0-20210519013150-a5401869b037/go.mod h1:RP72rucOFm5udrnEzTmIWLRVGQiV/fSUAQXJ0RST/nk=
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github.com/Arceliar/ironwood v0.0.0-20210523223424-d320cf0ed78e h1:EoZ4Dfm3xBDFjXRUzZUH+44NVvQ8tLf/VyESuC0BijI=
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github.com/Arceliar/ironwood v0.0.0-20210523223424-d320cf0ed78e/go.mod h1:RP72rucOFm5udrnEzTmIWLRVGQiV/fSUAQXJ0RST/nk=
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github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979 h1:WndgpSW13S32VLQ3ugUxx2EnnWmgba1kCqPkd4Gk1yQ=
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github.com/Arceliar/phony v0.0.0-20210209235338-dde1a8dca979/go.mod h1:6Lkn+/zJilRMsKmbmG1RPoamiArC6HS73xbwRyp3UyI=
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github.com/VividCortex/ewma v1.1.1 h1:MnEK4VOv6n0RSY4vtRe3h11qjxL3+t0B8yOL8iMXdcM=
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File diff suppressed because it is too large
Load Diff
@ -1,62 +0,0 @@
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import glob
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import sys
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inputDirPath = sys.argv[1]
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inputFilePaths = glob.glob(inputDirPath+"/*")
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inputFilePaths.sort()
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merged = dict()
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stretches = []
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total = 0
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for inputFilePath in inputFilePaths:
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print "Processing file {}".format(inputFilePath)
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with open(inputFilePath, 'r') as f:
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inData = f.readlines()
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pathsChecked = 0.
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avgStretch = 0.
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for line in inData:
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dat = line.rstrip('\n').split(' ')
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eHops = int(dat[0])
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nHops = int(dat[1])
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count = int(dat[2])
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if eHops not in merged: merged[eHops] = dict()
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if nHops not in merged[eHops]: merged[eHops][nHops] = 0
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merged[eHops][nHops] += count
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total += count
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pathsChecked += count
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stretch = float(nHops)/eHops
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avgStretch += stretch*count
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finStretch = avgStretch / max(1, pathsChecked)
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stretches.append(str(finStretch))
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hopsUsed = 0.
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hopsNeeded = 0.
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avgStretch = 0.
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results = []
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for eHops in sorted(merged.keys()):
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for nHops in sorted(merged[eHops].keys()):
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count = merged[eHops][nHops]
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result = "{} {} {}".format(eHops, nHops, count)
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results.append(result)
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hopsUsed += nHops*count
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hopsNeeded += eHops*count
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stretch = float(nHops)/eHops
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avgStretch += stretch*count
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print result
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bandwidthUsage = hopsUsed/max(1, hopsNeeded)
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avgStretch /= max(1, total)
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with open("results.txt", "w") as f:
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f.write('\n'.join(results))
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with open("stretches.txt", "w") as f:
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f.write('\n'.join(stretches))
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print "Total files processed: {}".format(len(inputFilePaths))
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print "Total paths found: {}".format(total)
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print "Bandwidth usage: {}".format(bandwidthUsage)
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print "Average stretch: {}".format(avgStretch)
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@ -1,2 +0,0 @@
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#!/bin/bash
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go run -tags debug misc/sim/treesim.go "$@"
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@ -1,901 +0,0 @@
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# Tree routing scheme (named Yggdrasil, after the world tree from Norse mythology)
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# Steps:
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# 1: Pick any node, here I'm using highest nodeID
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# 2: Build spanning tree, each node stores path back to root
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# Optionally with weights for each hop
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# Ties broken by preferring a parent with higher degree
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# 3: Distance metric: self->peer + (via tree) peer->dest
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# 4: Perform (modified) greedy lookup via this metric for each direction (A->B and B->A)
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# 5: Source-route traffic using the better of those two paths
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# Note: This makes no attempt to simulate a dynamic network
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# E.g. A node's peers cannot be disconnected
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# TODO:
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# Make better use of drop?
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# In particular, we should be ignoring *all* recently dropped *paths* to the root
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# To minimize route flapping
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# Not really an issue in the sim, but probably needed for a real network
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import array
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import gc
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import glob
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import gzip
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import heapq
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import os
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import random
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import time
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#############
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# Constants #
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#############
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# Reminder of where link cost comes in
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LINK_COST = 1
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# Timeout before dropping something, in simulated seconds
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TIMEOUT = 60
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###########
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# Classes #
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###########
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class PathInfo:
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def __init__(self, nodeID):
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self.nodeID = nodeID # e.g. IP
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self.coords = [] # Position in tree
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self.tstamp = 0 # Timestamp from sender, to keep track of old vs new info
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self.degree = 0 # Number of peers the sender has, used to break ties
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# The above should be signed
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self.path = [nodeID] # Path to node (in path-vector route)
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self.time = 0 # Time info was updated, to keep track of e.g. timeouts
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self.treeID = nodeID # Hack, let tree use different ID than IP, used so we can dijkstra once and test many roots
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def clone(self):
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# Return a deep-enough copy of the path
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clone = PathInfo(None)
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clone.nodeID = self.nodeID
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clone.coords = self.coords[:]
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clone.tstamp = self.tstamp
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clone.degree = self.degree
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clone.path = self.path[:]
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clone.time = self.time
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clone.treeID = self.treeID
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return clone
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# End class PathInfo
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class Node:
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def __init__(self, nodeID):
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self.info = PathInfo(nodeID) # Self NodeInfo
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self.root = None # PathInfo to node at root of tree
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self.drop = dict() # PathInfo to nodes from clus that have timed out
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self.peers = dict() # PathInfo to peers
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self.links = dict() # Links to peers (to pass messages)
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self.msgs = [] # Said messages
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self.table = dict() # Pre-computed lookup table of peer info
|
||||
|
||||
def tick(self):
|
||||
# Do periodic maintenance stuff, including push updates
|
||||
self.info.time += 1
|
||||
if self.info.time > self.info.tstamp + TIMEOUT/4:
|
||||
# Update timestamp at least once every 1/4 timeout period
|
||||
# This should probably be randomized in a real implementation
|
||||
self.info.tstamp = self.info.time
|
||||
self.info.degree = 0# TODO decide if degree should be used, len(self.peers)
|
||||
changed = False # Used to track when the network has converged
|
||||
changed |= self.cleanRoot()
|
||||
self.cleanDropped()
|
||||
# Should probably send messages infrequently if there's nothing new to report
|
||||
if self.info.tstamp == self.info.time:
|
||||
msg = self.createMessage()
|
||||
self.sendMessage(msg)
|
||||
return changed
|
||||
|
||||
def cleanRoot(self):
|
||||
changed = False
|
||||
if self.root and self.info.time - self.root.time > TIMEOUT:
|
||||
print "DEBUG: clean root,", self.root.path
|
||||
self.drop[self.root.treeID] = self.root
|
||||
self.root = None
|
||||
changed = True
|
||||
if not self.root or self.root.treeID < self.info.treeID:
|
||||
# No need to drop someone who'se worse than us
|
||||
self.info.coords = [self.info.nodeID]
|
||||
self.root = self.info.clone()
|
||||
changed = True
|
||||
elif self.root.treeID == self.info.treeID:
|
||||
self.root = self.info.clone()
|
||||
return changed
|
||||
|
||||
def cleanDropped(self):
|
||||
# May actually be a treeID... better to iterate over keys explicitly
|
||||
nodeIDs = sorted(self.drop.keys())
|
||||
for nodeID in nodeIDs:
|
||||
node = self.drop[nodeID]
|
||||
if self.info.time - node.time > 4*TIMEOUT:
|
||||
del self.drop[nodeID]
|
||||
return None
|
||||
|
||||
def createMessage(self):
|
||||
# Message is just a tuple
|
||||
# First element is the sender
|
||||
# Second element is the root
|
||||
# We will .clone() everything during the send operation
|
||||
msg = (self.info, self.root)
|
||||
return msg
|
||||
|
||||
def sendMessage(self, msg):
|
||||
for link in self.links.values():
|
||||
newMsg = (msg[0].clone(), msg[1].clone())
|
||||
link.msgs.append(newMsg)
|
||||
return None
|
||||
|
||||
def handleMessages(self):
|
||||
changed = False
|
||||
while self.msgs:
|
||||
changed |= self.handleMessage(self.msgs.pop())
|
||||
return changed
|
||||
|
||||
def handleMessage(self, msg):
|
||||
changed = False
|
||||
for node in msg:
|
||||
# Update the path and timestamp for the sender and root info
|
||||
node.path.append(self.info.nodeID)
|
||||
node.time = self.info.time
|
||||
# Update the sender's info in our list of peers
|
||||
sender = msg[0]
|
||||
self.peers[sender.nodeID] = sender
|
||||
# Decide if we want to update the root
|
||||
root = msg[1]
|
||||
updateRoot = False
|
||||
isSameParent = False
|
||||
isBetterParent = False
|
||||
if len(self.root.path) > 1 and len(root.path) > 1:
|
||||
parent = self.peers[self.root.path[-2]]
|
||||
if parent.nodeID == sender.nodeID: isSameParent = True
|
||||
if sender.degree > parent.degree:
|
||||
# This would also be where you check path uptime/reliability/whatever
|
||||
# All else being equal, we prefer parents with high degree
|
||||
# We are trusting peers to report degree correctly in this case
|
||||
# So expect some performance reduction if your peers aren't trustworthy
|
||||
# (Lies can increase average stretch by a few %)
|
||||
isBetterParent = True
|
||||
if self.info.nodeID in root.path[:-1]: pass # No loopy routes allowed
|
||||
elif root.treeID in self.drop and self.drop[root.treeID].tstamp >= root.tstamp: pass
|
||||
elif not self.root: updateRoot = True
|
||||
elif self.root.treeID < root.treeID: updateRoot = True
|
||||
elif self.root.treeID != root.treeID: pass
|
||||
elif self.root.tstamp > root.tstamp: pass
|
||||
elif len(root.path) < len(self.root.path): updateRoot = True
|
||||
elif isBetterParent and len(root.path) == len(self.root.path): updateRoot = True
|
||||
elif isSameParent and self.root.tstamp < root.tstamp: updateRoot = True
|
||||
if updateRoot:
|
||||
if not self.root or self.root.path != root.path: changed = True
|
||||
self.root = root
|
||||
self.info.coords = self.root.path
|
||||
return changed
|
||||
|
||||
def lookup(self, dest):
|
||||
# Note: Can loop in an unconverged network
|
||||
# The person looking up the route is responsible for checking for loops
|
||||
best = None
|
||||
bestDist = 0
|
||||
for node in self.peers.itervalues():
|
||||
# dist = distance to node + dist (on tree) from node to dest
|
||||
dist = len(node.path)-1 + treeDist(node.coords, dest.coords)
|
||||
if not best or dist < bestDist:
|
||||
best = node
|
||||
bestDist = dist
|
||||
if best:
|
||||
next = best.path[-2]
|
||||
assert next in self.peers
|
||||
return next
|
||||
else:
|
||||
# We failed to look something up
|
||||
# TODO some way to signal this which doesn't crash
|
||||
assert False
|
||||
|
||||
def initTable(self):
|
||||
# Pre-computes a lookup table for destination coords
|
||||
# Insert parent first so you prefer them as a next-hop
|
||||
self.table.clear()
|
||||
parent = self.info.nodeID
|
||||
if len(self.info.coords) >= 2: parent = self.info.coords[-2]
|
||||
for peer in self.peers.itervalues():
|
||||
current = self.table
|
||||
for coord in peer.coords:
|
||||
if coord not in current: current[coord] = (peer.nodeID, dict())
|
||||
old = current[coord]
|
||||
next = old[1]
|
||||
oldPeer = self.peers[old[0]]
|
||||
oldDist = len(oldPeer.coords)
|
||||
oldDeg = oldPeer.degree
|
||||
newDist = len(peer.coords)
|
||||
newDeg = peer.degree
|
||||
# Prefer parent
|
||||
# Else prefer short distance from root
|
||||
# If equal distance, prefer high degree
|
||||
if peer.nodeID == parent: current[coord] = (peer.nodeID, next)
|
||||
elif newDist < oldDist: current[coord] = (peer.nodeID, next)
|
||||
elif newDist == oldDist and newDeg > oldDeg: current[coord] = (peer.nodeID, next)
|
||||
current = next
|
||||
return None
|
||||
|
||||
def lookup_new(self, dest):
|
||||
# Use pre-computed lookup table to look up next hop for dest coords
|
||||
assert self.table
|
||||
if len(self.info.coords) >= 2: parent = self.info.coords[-2]
|
||||
else: parent = None
|
||||
current = (parent, self.table)
|
||||
c = None
|
||||
for coord in dest.coords:
|
||||
c = coord
|
||||
if coord not in current[1]: break
|
||||
current = current[1][coord]
|
||||
next = current[0]
|
||||
if c in self.peers: next = c
|
||||
if next not in self.peers:
|
||||
assert next == None
|
||||
# You're the root of a different connected component
|
||||
# You'd drop the packet in this case
|
||||
# To make the path cache not die, need to return a valid next hop...
|
||||
# Returning self for that reason
|
||||
next = self.info.nodeID
|
||||
return next
|
||||
# End class Node
|
||||
|
||||
####################
|
||||
# Helper Functions #
|
||||
####################
|
||||
|
||||
def getIndexOfLCA(source, dest):
|
||||
# Return index of last common ancestor in source/dest coords
|
||||
# -1 if no common ancestor (e.g. different roots)
|
||||
lcaIdx = -1
|
||||
minLen = min(len(source), len(dest))
|
||||
for idx in xrange(minLen):
|
||||
if source[idx] == dest[idx]: lcaIdx = idx
|
||||
else: break
|
||||
return lcaIdx
|
||||
|
||||
def treePath(source, dest):
|
||||
# Return path with source at head and dest at tail
|
||||
lastMatch = getIndexOfLCA(source, dest)
|
||||
path = dest[-1:lastMatch:-1] + source[lastMatch:]
|
||||
assert path[0] == dest[-1]
|
||||
assert path[-1] == source[-1]
|
||||
return path
|
||||
|
||||
def treeDist(source, dest):
|
||||
dist = len(source) + len(dest)
|
||||
lcaIdx = getIndexOfLCA(source, dest)
|
||||
dist -= 2*(lcaIdx+1)
|
||||
return dist
|
||||
|
||||
def dijkstra(nodestore, startingNodeID):
|
||||
# Idea to use heapq and basic implementation taken from stackexchange post
|
||||
# http://codereview.stackexchange.com/questions/79025/dijkstras-algorithm-in-python
|
||||
nodeIDs = sorted(nodestore.keys())
|
||||
nNodes = len(nodeIDs)
|
||||
idxs = dict()
|
||||
for nodeIdx in xrange(nNodes):
|
||||
nodeID = nodeIDs[nodeIdx]
|
||||
idxs[nodeID] = nodeIdx
|
||||
dists = array.array("H", [0]*nNodes)
|
||||
queue = [(0, startingNodeID)]
|
||||
while queue:
|
||||
dist, nodeID = heapq.heappop(queue)
|
||||
idx = idxs[nodeID]
|
||||
if not dists[idx]: # Unvisited, otherwise we skip it
|
||||
dists[idx] = dist
|
||||
for peer in nodestore[nodeID].links:
|
||||
if not dists[idxs[peer]]:
|
||||
# Peer is also unvisited, so add to queue
|
||||
heapq.heappush(queue, (dist+LINK_COST, peer))
|
||||
return dists
|
||||
|
||||
def dijkstrall(nodestore):
|
||||
# Idea to use heapq and basic implementation taken from stackexchange post
|
||||
# http://codereview.stackexchange.com/questions/79025/dijkstras-algorithm-in-python
|
||||
nodeIDs = sorted(nodestore.keys())
|
||||
nNodes = len(nodeIDs)
|
||||
idxs = dict()
|
||||
for nodeIdx in xrange(nNodes):
|
||||
nodeID = nodeIDs[nodeIdx]
|
||||
idxs[nodeID] = nodeIdx
|
||||
dists = array.array("H", [0]*nNodes*nNodes) # use GetCacheIndex(nNodes, start, end)
|
||||
for sourceIdx in xrange(nNodes):
|
||||
print "Finding shortest paths for node {} / {} ({})".format(sourceIdx+1, nNodes, nodeIDs[sourceIdx])
|
||||
queue = [(0, sourceIdx)]
|
||||
while queue:
|
||||
dist, nodeIdx = heapq.heappop(queue)
|
||||
distIdx = getCacheIndex(nNodes, sourceIdx, nodeIdx)
|
||||
if not dists[distIdx]: # Unvisited, otherwise we skip it
|
||||
dists[distIdx] = dist
|
||||
for peer in nodestore[nodeIDs[nodeIdx]].links:
|
||||
pIdx = idxs[peer]
|
||||
pdIdx = getCacheIndex(nNodes, sourceIdx, pIdx)
|
||||
if not dists[pdIdx]:
|
||||
# Peer is also unvisited, so add to queue
|
||||
heapq.heappush(queue, (dist+LINK_COST, pIdx))
|
||||
return dists
|
||||
|
||||
def linkNodes(node1, node2):
|
||||
node1.links[node2.info.nodeID] = node2
|
||||
node2.links[node1.info.nodeID] = node1
|
||||
|
||||
############################
|
||||
# Store topology functions #
|
||||
############################
|
||||
|
||||
def makeStoreSquareGrid(sideLength, randomize=True):
|
||||
# Simple grid in a sideLength*sideLength square
|
||||
# Just used to validate that the code runs
|
||||
store = dict()
|
||||
nodeIDs = list(range(sideLength*sideLength))
|
||||
if randomize: random.shuffle(nodeIDs)
|
||||
for nodeID in nodeIDs:
|
||||
store[nodeID] = Node(nodeID)
|
||||
for index in xrange(len(nodeIDs)):
|
||||
if (index % sideLength != 0): linkNodes(store[nodeIDs[index]], store[nodeIDs[index-1]])
|
||||
if (index >= sideLength): linkNodes(store[nodeIDs[index]], store[nodeIDs[index-sideLength]])
|
||||
print "Grid store created, size {}".format(len(store))
|
||||
return store
|
||||
|
||||
def makeStoreASRelGraph(pathToGraph):
|
||||
#Existing network graphs, in caida.org's asrel format (ASx|ASy|z per line, z denotes relationship type)
|
||||
with open(pathToGraph, "r") as f:
|
||||
inData = f.readlines()
|
||||
store = dict()
|
||||
for line in inData:
|
||||
if line.strip()[0] == "#": continue # Skip comment lines
|
||||
line = line.replace('|'," ")
|
||||
nodes = map(int, line.split()[0:2])
|
||||
if nodes[0] not in store: store[nodes[0]] = Node(nodes[0])
|
||||
if nodes[1] not in store: store[nodes[1]] = Node(nodes[1])
|
||||
linkNodes(store[nodes[0]], store[nodes[1]])
|
||||
print "CAIDA AS-relation graph successfully imported, size {}".format(len(store))
|
||||
return store
|
||||
|
||||
def makeStoreASRelGraphMaxDeg(pathToGraph, degIdx=0):
|
||||
with open(pathToGraph, "r") as f:
|
||||
inData = f.readlines()
|
||||
store = dict()
|
||||
nodeDeg = dict()
|
||||
for line in inData:
|
||||
if line.strip()[0] == "#": continue # Skip comment lines
|
||||
line = line.replace('|'," ")
|
||||
nodes = map(int, line.split()[0:2])
|
||||
if nodes[0] not in nodeDeg: nodeDeg[nodes[0]] = 0
|
||||
if nodes[1] not in nodeDeg: nodeDeg[nodes[1]] = 0
|
||||
nodeDeg[nodes[0]] += 1
|
||||
nodeDeg[nodes[1]] += 1
|
||||
sortedNodes = sorted(nodeDeg.keys(), \
|
||||
key=lambda x: (nodeDeg[x], x), \
|
||||
reverse=True)
|
||||
maxDegNodeID = sortedNodes[degIdx]
|
||||
return makeStoreASRelGraphFixedRoot(pathToGraph, maxDegNodeID)
|
||||
|
||||
def makeStoreASRelGraphFixedRoot(pathToGraph, rootNodeID):
|
||||
with open(pathToGraph, "r") as f:
|
||||
inData = f.readlines()
|
||||
store = dict()
|
||||
for line in inData:
|
||||
if line.strip()[0] == "#": continue # Skip comment lines
|
||||
line = line.replace('|'," ")
|
||||
nodes = map(int, line.split()[0:2])
|
||||
if nodes[0] not in store:
|
||||
store[nodes[0]] = Node(nodes[0])
|
||||
if nodes[0] == rootNodeID: store[nodes[0]].info.treeID += 1000000000
|
||||
if nodes[1] not in store:
|
||||
store[nodes[1]] = Node(nodes[1])
|
||||
if nodes[1] == rootNodeID: store[nodes[1]].info.treeID += 1000000000
|
||||
linkNodes(store[nodes[0]], store[nodes[1]])
|
||||
print "CAIDA AS-relation graph successfully imported, size {}".format(len(store))
|
||||
return store
|
||||
|
||||
def makeStoreDimesEdges(pathToGraph, rootNodeID=None):
|
||||
# Read from a DIMES csv-formatted graph from a gzip file
|
||||
store = dict()
|
||||
with gzip.open(pathToGraph, "r") as f:
|
||||
inData = f.readlines()
|
||||
size = len(inData)
|
||||
index = 0
|
||||
for edge in inData:
|
||||
if not index % 1000:
|
||||
pct = 100.0*index/size
|
||||
print "Processing edge {}, {:.2f}%".format(index, pct)
|
||||
index += 1
|
||||
dat = edge.rstrip().split(',')
|
||||
node1 = "N" + str(dat[0].strip())
|
||||
node2 = "N" + str(dat[1].strip())
|
||||
if '?' in node1 or '?' in node2: continue #Unknown node
|
||||
if node1 == rootNodeID: node1 = "R" + str(dat[0].strip())
|
||||
if node2 == rootNodeID: node2 = "R" + str(dat[1].strip())
|
||||
if node1 not in store: store[node1] = Node(node1)
|
||||
if node2 not in store: store[node2] = Node(node2)
|
||||
if node1 != node2: linkNodes(store[node1], store[node2])
|
||||
print "DIMES graph successfully imported, size {}".format(len(store))
|
||||
return store
|
||||
|
||||
def makeStoreGeneratedGraph(pathToGraph, root=None):
|
||||
with open(pathToGraph, "r") as f:
|
||||
inData = f.readlines()
|
||||
store = dict()
|
||||
for line in inData:
|
||||
if line.strip()[0] == "#": continue # Skip comment lines
|
||||
nodes = map(int, line.strip().split(' ')[0:2])
|
||||
node1 = nodes[0]
|
||||
node2 = nodes[1]
|
||||
if node1 == root: node1 += 1000000
|
||||
if node2 == root: node2 += 1000000
|
||||
if node1 not in store: store[node1] = Node(node1)
|
||||
if node2 not in store: store[node2] = Node(node2)
|
||||
linkNodes(store[node1], store[node2])
|
||||
print "Generated graph successfully imported, size {}".format(len(store))
|
||||
return store
|
||||
|
||||
|
||||
############################################
|
||||
# Functions used as parts of network tests #
|
||||
############################################
|
||||
|
||||
def idleUntilConverged(store):
|
||||
nodeIDs = sorted(store.keys())
|
||||
timeOfLastChange = 0
|
||||
step = 0
|
||||
# Idle until the network has converged
|
||||
while step - timeOfLastChange < 4*TIMEOUT:
|
||||
step += 1
|
||||
print "Step: {}, last change: {}".format(step, timeOfLastChange)
|
||||
changed = False
|
||||
for nodeID in nodeIDs:
|
||||
# Update node status, send messages
|
||||
changed |= store[nodeID].tick()
|
||||
for nodeID in nodeIDs:
|
||||
# Process messages
|
||||
changed |= store[nodeID].handleMessages()
|
||||
if changed: timeOfLastChange = step
|
||||
initTables(store)
|
||||
return store
|
||||
|
||||
def getCacheIndex(nodes, sourceIndex, destIndex):
|
||||
return sourceIndex*nodes + destIndex
|
||||
|
||||
def initTables(store):
|
||||
nodeIDs = sorted(store.keys())
|
||||
nNodes = len(nodeIDs)
|
||||
print "Initializing routing tables for {} nodes".format(nNodes)
|
||||
for idx in xrange(nNodes):
|
||||
nodeID = nodeIDs[idx]
|
||||
store[nodeID].initTable()
|
||||
print "Routing tables initialized"
|
||||
return None
|
||||
|
||||
def getCache(store):
|
||||
nodeIDs = sorted(store.keys())
|
||||
nNodes = len(nodeIDs)
|
||||
nodeIdxs = dict()
|
||||
for nodeIdx in xrange(nNodes):
|
||||
nodeIdxs[nodeIDs[nodeIdx]] = nodeIdx
|
||||
cache = array.array("H", [0]*nNodes*nNodes)
|
||||
for sourceIdx in xrange(nNodes):
|
||||
sourceID = nodeIDs[sourceIdx]
|
||||
print "Building fast lookup table for node {} / {} ({})".format(sourceIdx+1, nNodes, sourceID)
|
||||
for destIdx in xrange(nNodes):
|
||||
destID = nodeIDs[destIdx]
|
||||
if sourceID == destID: nextHop = destID # lookup would fail
|
||||
else: nextHop = store[sourceID].lookup(store[destID].info)
|
||||
nextHopIdx = nodeIdxs[nextHop]
|
||||
cache[getCacheIndex(nNodes, sourceIdx, destIdx)] = nextHopIdx
|
||||
return cache
|
||||
|
||||
def testPaths(store, dists):
|
||||
cache = getCache(store)
|
||||
nodeIDs = sorted(store.keys())
|
||||
nNodes = len(nodeIDs)
|
||||
idxs = dict()
|
||||
for nodeIdx in xrange(nNodes):
|
||||
nodeID = nodeIDs[nodeIdx]
|
||||
idxs[nodeID] = nodeIdx
|
||||
results = dict()
|
||||
for sourceIdx in xrange(nNodes):
|
||||
sourceID = nodeIDs[sourceIdx]
|
||||
print "Testing paths from node {} / {} ({})".format(sourceIdx+1, len(nodeIDs), sourceID)
|
||||
#dists = dijkstra(store, sourceID)
|
||||
for destIdx in xrange(nNodes):
|
||||
destID = nodeIDs[destIdx]
|
||||
if destID == sourceID: continue # Skip self
|
||||
distIdx = getCacheIndex(nNodes, sourceIdx, destIdx)
|
||||
eHops = dists[distIdx]
|
||||
if not eHops: continue # The network is split, no path exists
|
||||
hops = 0
|
||||
for pair in ((sourceIdx, destIdx),):
|
||||
nHops = 0
|
||||
locIdx = pair[0]
|
||||
dIdx = pair[1]
|
||||
while locIdx != dIdx:
|
||||
locIdx = cache[getCacheIndex(nNodes, locIdx, dIdx)]
|
||||
nHops += 1
|
||||
if not hops or nHops < hops: hops = nHops
|
||||
if eHops not in results: results[eHops] = dict()
|
||||
if hops not in results[eHops]: results[eHops][hops] = 0
|
||||
results[eHops][hops] += 1
|
||||
return results
|
||||
|
||||
def getAvgStretch(pathMatrix):
|
||||
avgStretch = 0.
|
||||
checked = 0.
|
||||
for eHops in sorted(pathMatrix.keys()):
|
||||
for nHops in sorted(pathMatrix[eHops].keys()):
|
||||
count = pathMatrix[eHops][nHops]
|
||||
stretch = float(nHops)/float(max(1, eHops))
|
||||
avgStretch += stretch*count
|
||||
checked += count
|
||||
avgStretch /= max(1, checked)
|
||||
return avgStretch
|
||||
|
||||
def getMaxStretch(pathMatrix):
|
||||
maxStretch = 0.
|
||||
for eHops in sorted(pathMatrix.keys()):
|
||||
for nHops in sorted(pathMatrix[eHops].keys()):
|
||||
stretch = float(nHops)/float(max(1, eHops))
|
||||
maxStretch = max(maxStretch, stretch)
|
||||
return maxStretch
|
||||
|
||||
def getCertSizes(store):
|
||||
# Returns nCerts frequency distribution
|
||||
# De-duplicates common certs (for shared prefixes in the path)
|
||||
sizes = dict()
|
||||
for node in store.values():
|
||||
certs = set()
|
||||
for peer in node.peers.values():
|
||||
pCerts = set()
|
||||
assert len(peer.path) == 2
|
||||
assert peer.coords[-1] == peer.path[0]
|
||||
hops = peer.coords + peer.path[1:]
|
||||
for hopIdx in xrange(len(hops)-1):
|
||||
send = hops[hopIdx]
|
||||
if send == node.info.nodeID: continue # We created it, already have it
|
||||
path = hops[0:hopIdx+2]
|
||||
# Each cert is signed by the sender
|
||||
# Includes information about the path from the sender to the next hop
|
||||
# Next hop is at hopIdx+1, so the path to next hop is hops[0:hopIdx+2]
|
||||
cert = "{}:{}".format(send, path)
|
||||
certs.add(cert)
|
||||
size = len(certs)
|
||||
if size not in sizes: sizes[size] = 0
|
||||
sizes[size] += 1
|
||||
return sizes
|
||||
|
||||
def getMinLinkCertSizes(store):
|
||||
# Returns nCerts frequency distribution
|
||||
# De-duplicates common certs (for shared prefixes in the path)
|
||||
# Based on the minimum number of certs that must be traded through a particular link
|
||||
# Handled per link
|
||||
sizes = dict()
|
||||
for node in store.values():
|
||||
peerCerts = dict()
|
||||
for peer in node.peers.values():
|
||||
pCerts = set()
|
||||
assert len(peer.path) == 2
|
||||
assert peer.coords[-1] == peer.path[0]
|
||||
hops = peer.coords + peer.path[1:]
|
||||
for hopIdx in xrange(len(hops)-1):
|
||||
send = hops[hopIdx]
|
||||
if send == node.info.nodeID: continue # We created it, already have it
|
||||
path = hops[0:hopIdx+2]
|
||||
# Each cert is signed by the sender
|
||||
# Includes information about the path from the sender to the next hop
|
||||
# Next hop is at hopIdx+1, so the path to next hop is hops[0:hopIdx+2]
|
||||
cert = "{}:{}".format(send, path)
|
||||
pCerts.add(cert)
|
||||
peerCerts[peer.nodeID] = pCerts
|
||||
for peer in peerCerts:
|
||||
size = 0
|
||||
pCerts = peerCerts[peer]
|
||||
for cert in pCerts:
|
||||
required = True
|
||||
for p2 in peerCerts:
|
||||
if p2 == peer: continue
|
||||
p2Certs = peerCerts[p2]
|
||||
if cert in p2Certs: required = False
|
||||
if required: size += 1
|
||||
if size not in sizes: sizes[size] = 0
|
||||
sizes[size] += 1
|
||||
return sizes
|
||||
|
||||
def getPathSizes(store):
|
||||
# Returns frequency distribution of the total number of hops the routing table
|
||||
# I.e. a node with 3 peers, each with 5 hop coord+path, would count as 3x5=15
|
||||
sizes = dict()
|
||||
for node in store.values():
|
||||
size = 0
|
||||
for peer in node.peers.values():
|
||||
assert len(peer.path) == 2
|
||||
assert peer.coords[-1] == peer.path[0]
|
||||
peerSize = len(peer.coords) + len(peer.path) - 1 # double-counts peer, -1
|
||||
size += peerSize
|
||||
if size not in sizes: sizes[size] = 0
|
||||
sizes[size] += 1
|
||||
return sizes
|
||||
|
||||
def getPeerSizes(store):
|
||||
# Returns frequency distribution of the number of peers each node has
|
||||
sizes = dict()
|
||||
for node in store.values():
|
||||
nPeers = len(node.peers)
|
||||
if nPeers not in sizes: sizes[nPeers] = 0
|
||||
sizes[nPeers] += 1
|
||||
return sizes
|
||||
|
||||
def getAvgSize(sizes):
|
||||
sumSizes = 0
|
||||
nNodes = 0
|
||||
for size in sizes:
|
||||
count = sizes[size]
|
||||
sumSizes += size*count
|
||||
nNodes += count
|
||||
avgSize = float(sumSizes)/max(1, nNodes)
|
||||
return avgSize
|
||||
|
||||
def getMaxSize(sizes):
|
||||
return max(sizes.keys())
|
||||
|
||||
def getMinSize(sizes):
|
||||
return min(sizes.keys())
|
||||
|
||||
def getResults(pathMatrix):
|
||||
results = []
|
||||
for eHops in sorted(pathMatrix.keys()):
|
||||
for nHops in sorted(pathMatrix[eHops].keys()):
|
||||
count = pathMatrix[eHops][nHops]
|
||||
results.append("{} {} {}".format(eHops, nHops, count))
|
||||
return '\n'.join(results)
|
||||
|
||||
####################################
|
||||
# Functions to run different tests #
|
||||
####################################
|
||||
|
||||
def runTest(store):
|
||||
# Runs the usual set of tests on the store
|
||||
# Does not save results, so only meant for quick tests
|
||||
# To e.g. check the code works, maybe warm up the pypy jit
|
||||
for node in store.values():
|
||||
node.info.time = random.randint(0, TIMEOUT)
|
||||
node.info.tstamp = TIMEOUT
|
||||
print "Begin testing network"
|
||||
dists = None
|
||||
if not dists: dists = dijkstrall(store)
|
||||
idleUntilConverged(store)
|
||||
pathMatrix = testPaths(store, dists)
|
||||
avgStretch = getAvgStretch(pathMatrix)
|
||||
maxStretch = getMaxStretch(pathMatrix)
|
||||
peers = getPeerSizes(store)
|
||||
certs = getCertSizes(store)
|
||||
paths = getPathSizes(store)
|
||||
linkCerts = getMinLinkCertSizes(store)
|
||||
avgPeerSize = getAvgSize(peers)
|
||||
maxPeerSize = getMaxSize(peers)
|
||||
avgCertSize = getAvgSize(certs)
|
||||
maxCertSize = getMaxSize(certs)
|
||||
avgPathSize = getAvgSize(paths)
|
||||
maxPathSize = getMaxSize(paths)
|
||||
avgLinkCert = getAvgSize(linkCerts)
|
||||
maxLinkCert = getMaxSize(linkCerts)
|
||||
totalCerts = sum(map(lambda x: x*certs[x], certs.keys()))
|
||||
totalLinks = sum(map(lambda x: x*peers[x], peers.keys())) # one-way links
|
||||
avgCertsPerLink = float(totalCerts)/max(1, totalLinks)
|
||||
print "Finished testing network"
|
||||
print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
|
||||
print "Avg / Max nPeers size: {} / {}".format(avgPeerSize, maxPeerSize)
|
||||
print "Avg / Max nCerts size: {} / {}".format(avgCertSize, maxCertSize)
|
||||
print "Avg / Max total hops in any node's routing table: {} / {}".format(avgPathSize, maxPathSize)
|
||||
print "Avg / Max lower bound cert requests per link (one-way): {} / {}".format(avgLinkCert, maxLinkCert)
|
||||
print "Avg certs per link (one-way): {}".format(avgCertsPerLink)
|
||||
return # End of function
|
||||
|
||||
def rootNodeASTest(path, outDir="output-treesim-AS", dists=None, proc = 1):
|
||||
# Checks performance for every possible choice of root node
|
||||
# Saves output for each root node to a separate file on disk
|
||||
# path = input path to some caida.org formatted AS-relationship graph
|
||||
if not os.path.exists(outDir): os.makedirs(outDir)
|
||||
assert os.path.exists(outDir)
|
||||
store = makeStoreASRelGraph(path)
|
||||
nodes = sorted(store.keys())
|
||||
for nodeIdx in xrange(len(nodes)):
|
||||
if nodeIdx % proc != 0: continue # Work belongs to someone else
|
||||
rootNodeID = nodes[nodeIdx]
|
||||
outpath = outDir+"/{}".format(rootNodeID)
|
||||
if os.path.exists(outpath):
|
||||
print "Skipping {}, already processed".format(rootNodeID)
|
||||
continue
|
||||
store = makeStoreASRelGraphFixedRoot(path, rootNodeID)
|
||||
for node in store.values():
|
||||
node.info.time = random.randint(0, TIMEOUT)
|
||||
node.info.tstamp = TIMEOUT
|
||||
print "Beginning {}, size {}".format(nodeIdx, len(store))
|
||||
if not dists: dists = dijkstrall(store)
|
||||
idleUntilConverged(store)
|
||||
pathMatrix = testPaths(store, dists)
|
||||
avgStretch = getAvgStretch(pathMatrix)
|
||||
maxStretch = getMaxStretch(pathMatrix)
|
||||
results = getResults(pathMatrix)
|
||||
with open(outpath, "w") as f:
|
||||
f.write(results)
|
||||
print "Finished test for root AS {} ({} / {})".format(rootNodeID, nodeIdx+1, len(store))
|
||||
print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
|
||||
#break # Stop after 1, because they can take forever
|
||||
return # End of function
|
||||
|
||||
def timelineASTest():
|
||||
# Meant to study the performance of the network as a function of network size
|
||||
# Loops over a set of AS-relationship graphs
|
||||
# Runs a test on each graph, selecting highest-degree node as the root
|
||||
# Saves results for each graph to a separate file on disk
|
||||
outDir = "output-treesim-timeline-AS"
|
||||
if not os.path.exists(outDir): os.makedirs(outDir)
|
||||
assert os.path.exists(outDir)
|
||||
paths = sorted(glob.glob("asrel/datasets/*"))
|
||||
for path in paths:
|
||||
date = os.path.basename(path).split(".")[0]
|
||||
outpath = outDir+"/{}".format(date)
|
||||
if os.path.exists(outpath):
|
||||
print "Skipping {}, already processed".format(date)
|
||||
continue
|
||||
store = makeStoreASRelGraphMaxDeg(path)
|
||||
dists = None
|
||||
for node in store.values():
|
||||
node.info.time = random.randint(0, TIMEOUT)
|
||||
node.info.tstamp = TIMEOUT
|
||||
print "Beginning {}, size {}".format(date, len(store))
|
||||
if not dists: dists = dijkstrall(store)
|
||||
idleUntilConverged(store)
|
||||
pathMatrix = testPaths(store, dists)
|
||||
avgStretch = getAvgStretch(pathMatrix)
|
||||
maxStretch = getMaxStretch(pathMatrix)
|
||||
results = getResults(pathMatrix)
|
||||
with open(outpath, "w") as f:
|
||||
f.write(results)
|
||||
print "Finished {} with {} nodes".format(date, len(store))
|
||||
print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
|
||||
#break # Stop after 1, because they can take forever
|
||||
return # End of function
|
||||
|
||||
def timelineDimesTest():
|
||||
# Meant to study the performance of the network as a function of network size
|
||||
# Loops over a set of AS-relationship graphs
|
||||
# Runs a test on each graph, selecting highest-degree node as the root
|
||||
# Saves results for each graph to a separate file on disk
|
||||
outDir = "output-treesim-timeline-dimes"
|
||||
if not os.path.exists(outDir): os.makedirs(outDir)
|
||||
assert os.path.exists(outDir)
|
||||
# Input files are named ASEdgesX_Y where X = month (no leading 0), Y = year
|
||||
paths = sorted(glob.glob("DIMES/ASEdges/*.gz"))
|
||||
exists = set(glob.glob(outDir+"/*"))
|
||||
for path in paths:
|
||||
date = os.path.basename(path).split(".")[0]
|
||||
outpath = outDir+"/{}".format(date)
|
||||
if outpath in exists:
|
||||
print "Skipping {}, already processed".format(date)
|
||||
continue
|
||||
store = makeStoreDimesEdges(path)
|
||||
# Get the highest degree node and make it root
|
||||
# Sorted by nodeID just to make it stable in the event of a tie
|
||||
nodeIDs = sorted(store.keys())
|
||||
bestRoot = ""
|
||||
bestDeg = 0
|
||||
for nodeID in nodeIDs:
|
||||
node = store[nodeID]
|
||||
if len(node.links) > bestDeg:
|
||||
bestRoot = nodeID
|
||||
bestDeg = len(node.links)
|
||||
assert bestRoot
|
||||
store = makeStoreDimesEdges(path, bestRoot)
|
||||
rootID = "R" + bestRoot[1:]
|
||||
assert rootID in store
|
||||
# Don't forget to set random seed before setting times
|
||||
# To make results reproducible
|
||||
nodeIDs = sorted(store.keys())
|
||||
random.seed(12345)
|
||||
for nodeID in nodeIDs:
|
||||
node = store[nodeID]
|
||||
node.info.time = random.randint(0, TIMEOUT)
|
||||
node.info.tstamp = TIMEOUT
|
||||
print "Beginning {}, size {}".format(date, len(store))
|
||||
if not dists: dists = dijkstrall(store)
|
||||
idleUntilConverged(store)
|
||||
pathMatrix = testPaths(store, dists)
|
||||
avgStretch = getAvgStretch(pathMatrix)
|
||||
maxStretch = getMaxStretch(pathMatrix)
|
||||
results = getResults(pathMatrix)
|
||||
with open(outpath, "w") as f:
|
||||
f.write(results)
|
||||
print "Finished {} with {} nodes".format(date, len(store))
|
||||
print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
|
||||
break # Stop after 1, because they can take forever
|
||||
return # End of function
|
||||
|
||||
def scalingTest(maxTests=None, inputDir="graphs"):
|
||||
# Meant to study the performance of the network as a function of network size
|
||||
# Loops over a set of nodes in a previously generated graph
|
||||
# Runs a test on each graph, testing each node as the root
|
||||
# if maxTests is set, tests only that number of roots (highest degree first)
|
||||
# Saves results for each graph to a separate file on disk
|
||||
outDir = "output-treesim-{}".format(inputDir)
|
||||
if not os.path.exists(outDir): os.makedirs(outDir)
|
||||
assert os.path.exists(outDir)
|
||||
paths = sorted(glob.glob("{}/*".format(inputDir)))
|
||||
exists = set(glob.glob(outDir+"/*"))
|
||||
for path in paths:
|
||||
gc.collect() # pypy waits for gc to close files
|
||||
graph = os.path.basename(path).split(".")[0]
|
||||
store = makeStoreGeneratedGraph(path)
|
||||
# Get the highest degree node and make it root
|
||||
# Sorted by nodeID just to make it stable in the event of a tie
|
||||
nodeIDs = sorted(store.keys(), key=lambda x: len(store[x].links), reverse=True)
|
||||
dists = None
|
||||
if maxTests: nodeIDs = nodeIDs[:maxTests]
|
||||
for nodeID in nodeIDs:
|
||||
nodeIDStr = str(nodeID).zfill(len(str(len(store)-1)))
|
||||
outpath = outDir+"/{}-{}".format(graph, nodeIDStr)
|
||||
if outpath in exists:
|
||||
print "Skipping {}-{}, already processed".format(graph, nodeIDStr)
|
||||
continue
|
||||
store = makeStoreGeneratedGraph(path, nodeID)
|
||||
# Don't forget to set random seed before setting times
|
||||
random.seed(12345) # To make results reproducible
|
||||
nIDs = sorted(store.keys())
|
||||
for nID in nIDs:
|
||||
node = store[nID]
|
||||
node.info.time = random.randint(0, TIMEOUT)
|
||||
node.info.tstamp = TIMEOUT
|
||||
print "Beginning {}, size {}".format(graph, len(store))
|
||||
if not dists: dists = dijkstrall(store)
|
||||
idleUntilConverged(store)
|
||||
pathMatrix = testPaths(store, dists)
|
||||
avgStretch = getAvgStretch(pathMatrix)
|
||||
maxStretch = getMaxStretch(pathMatrix)
|
||||
results = getResults(pathMatrix)
|
||||
with open(outpath, "w") as f:
|
||||
f.write(results)
|
||||
print "Finished {} with {} nodes for root {}".format(graph, len(store), nodeID)
|
||||
print "Avg / Max stretch: {} / {}".format(avgStretch, maxStretch)
|
||||
return # End of function
|
||||
|
||||
##################
|
||||
# Main Execution #
|
||||
##################
|
||||
|
||||
if __name__ == "__main__":
|
||||
if True: # Run a quick test
|
||||
random.seed(12345) # DEBUG
|
||||
store = makeStoreSquareGrid(4)
|
||||
runTest(store) # Quick test
|
||||
store = None
|
||||
# Do some real work
|
||||
#runTest(makeStoreDimesEdges("DIMES/ASEdges/ASEdges1_2007.csv.gz"))
|
||||
#timelineDimesTest()
|
||||
#rootNodeASTest("asrel/datasets/19980101.as-rel.txt")
|
||||
#timelineASTest()
|
||||
#rootNodeASTest("hype-2016-09-19.list", "output-treesim-hype")
|
||||
#scalingTest(None, "graphs-20") # First argument 1 to only test 1 root per graph
|
||||
#store = makeStoreGeneratedGraph("bgp_tables")
|
||||
#store = makeStoreGeneratedGraph("skitter")
|
||||
#store = makeStoreASRelGraphMaxDeg("hype-2016-09-19.list") #http://hia.cjdns.ca/watchlist/c/walk.peers.20160919
|
||||
#store = makeStoreGeneratedGraph("fc00-2017-08-12.txt")
|
||||
if store: runTest(store)
|
||||
#rootNodeASTest("skitter", "output-treesim-skitter", None, 0, 1)
|
||||
#scalingTest(1, "graphs-20") # First argument 1 to only test 1 root per graph
|
||||
#scalingTest(1, "graphs-21") # First argument 1 to only test 1 root per graph
|
||||
#scalingTest(1, "graphs-22") # First argument 1 to only test 1 root per graph
|
||||
#scalingTest(1, "graphs-23") # First argument 1 to only test 1 root per graph
|
||||
if not store:
|
||||
import sys
|
||||
args = sys.argv
|
||||
if len(args) == 2:
|
||||
job_number = int(sys.argv[1])
|
||||
rootNodeASTest("fc00-2017-08-12.txt", "fc00", None, job_number)
|
||||
else:
|
||||
print "Usage: {} job_number".format(args[0])
|
||||
print "job_number = which job set to run on this node (1-indexed)"
|
||||
|
||||
@ -1,459 +0,0 @@
|
||||
// +build !lint
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"flag"
|
||||
"fmt"
|
||||
"os"
|
||||
"runtime"
|
||||
"runtime/pprof"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/gologme/log"
|
||||
|
||||
. "github.com/yggdrasil-network/yggdrasil-go/src/yggdrasil"
|
||||
|
||||
. "github.com/yggdrasil-network/yggdrasil-go/src/crypto"
|
||||
)
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
type Node struct {
|
||||
index int
|
||||
core Core
|
||||
send chan<- []byte
|
||||
recv <-chan []byte
|
||||
}
|
||||
|
||||
func (n *Node) init(index int) {
|
||||
n.index = index
|
||||
n.core.Init()
|
||||
n.send = n.core.DEBUG_getSend()
|
||||
n.recv = n.core.DEBUG_getRecv()
|
||||
n.core.DEBUG_simFixMTU()
|
||||
}
|
||||
|
||||
func (n *Node) printTraffic() {
|
||||
for {
|
||||
packet := <-n.recv
|
||||
fmt.Println(n.index, packet)
|
||||
//panic("Got a packet")
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) startPeers() {
|
||||
//for _, p := range n.core.Peers.Ports {
|
||||
// go p.MainLoop()
|
||||
//}
|
||||
//go n.printTraffic()
|
||||
//n.core.Peers.DEBUG_startPeers()
|
||||
}
|
||||
|
||||
func linkNodes(m, n *Node) {
|
||||
// Don't allow duplicates
|
||||
if m.core.DEBUG_getPeers().DEBUG_hasPeer(n.core.DEBUG_getSigningPublicKey()) {
|
||||
return
|
||||
}
|
||||
// Create peers
|
||||
// Buffering reduces packet loss in the sim
|
||||
// This slightly speeds up testing (fewer delays before retrying a ping)
|
||||
pLinkPub, pLinkPriv := m.core.DEBUG_newBoxKeys()
|
||||
qLinkPub, qLinkPriv := m.core.DEBUG_newBoxKeys()
|
||||
p := m.core.DEBUG_getPeers().DEBUG_newPeer(n.core.DEBUG_getEncryptionPublicKey(),
|
||||
n.core.DEBUG_getSigningPublicKey(), *m.core.DEBUG_getSharedKey(pLinkPriv, qLinkPub))
|
||||
q := n.core.DEBUG_getPeers().DEBUG_newPeer(m.core.DEBUG_getEncryptionPublicKey(),
|
||||
m.core.DEBUG_getSigningPublicKey(), *n.core.DEBUG_getSharedKey(qLinkPriv, pLinkPub))
|
||||
DEBUG_simLinkPeers(p, q)
|
||||
return
|
||||
}
|
||||
|
||||
func makeStoreSquareGrid(sideLength int) map[int]*Node {
|
||||
store := make(map[int]*Node)
|
||||
nNodes := sideLength * sideLength
|
||||
idxs := make([]int, 0, nNodes)
|
||||
// TODO shuffle nodeIDs
|
||||
for idx := 1; idx <= nNodes; idx++ {
|
||||
idxs = append(idxs, idx)
|
||||
}
|
||||
for _, idx := range idxs {
|
||||
node := &Node{}
|
||||
node.init(idx)
|
||||
store[idx] = node
|
||||
}
|
||||
for idx := 0; idx < nNodes; idx++ {
|
||||
if (idx % sideLength) != 0 {
|
||||
linkNodes(store[idxs[idx]], store[idxs[idx-1]])
|
||||
}
|
||||
if idx >= sideLength {
|
||||
linkNodes(store[idxs[idx]], store[idxs[idx-sideLength]])
|
||||
}
|
||||
}
|
||||
//for _, node := range store { node.initPorts() }
|
||||
return store
|
||||
}
|
||||
|
||||
func makeStoreStar(nNodes int) map[int]*Node {
|
||||
store := make(map[int]*Node)
|
||||
center := &Node{}
|
||||
center.init(0)
|
||||
store[0] = center
|
||||
for idx := 1; idx < nNodes; idx++ {
|
||||
node := &Node{}
|
||||
node.init(idx)
|
||||
store[idx] = node
|
||||
linkNodes(center, node)
|
||||
}
|
||||
return store
|
||||
}
|
||||
|
||||
func loadGraph(path string) map[int]*Node {
|
||||
f, err := os.Open(path)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
defer f.Close()
|
||||
store := make(map[int]*Node)
|
||||
s := bufio.NewScanner(f)
|
||||
for s.Scan() {
|
||||
line := s.Text()
|
||||
nodeIdxstrs := strings.Split(line, " ")
|
||||
nodeIdx0, _ := strconv.Atoi(nodeIdxstrs[0])
|
||||
nodeIdx1, _ := strconv.Atoi(nodeIdxstrs[1])
|
||||
if store[nodeIdx0] == nil {
|
||||
node := &Node{}
|
||||
node.init(nodeIdx0)
|
||||
store[nodeIdx0] = node
|
||||
}
|
||||
if store[nodeIdx1] == nil {
|
||||
node := &Node{}
|
||||
node.init(nodeIdx1)
|
||||
store[nodeIdx1] = node
|
||||
}
|
||||
linkNodes(store[nodeIdx0], store[nodeIdx1])
|
||||
}
|
||||
//for _, node := range store { node.initPorts() }
|
||||
return store
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
func startNetwork(store map[[32]byte]*Node) {
|
||||
for _, node := range store {
|
||||
node.startPeers()
|
||||
}
|
||||
}
|
||||
|
||||
func getKeyedStore(store map[int]*Node) map[[32]byte]*Node {
|
||||
newStore := make(map[[32]byte]*Node)
|
||||
for _, node := range store {
|
||||
newStore[node.core.DEBUG_getSigningPublicKey()] = node
|
||||
}
|
||||
return newStore
|
||||
}
|
||||
|
||||
func testPaths(store map[[32]byte]*Node) bool {
|
||||
nNodes := len(store)
|
||||
count := 0
|
||||
for _, source := range store {
|
||||
count++
|
||||
fmt.Printf("Testing paths from node %d / %d (%d)\n", count, nNodes, source.index)
|
||||
for _, dest := range store {
|
||||
//if source == dest { continue }
|
||||
destLoc := dest.core.DEBUG_getLocator()
|
||||
coords := destLoc.DEBUG_getCoords()
|
||||
temp := 0
|
||||
ttl := ^uint64(0)
|
||||
oldTTL := ttl
|
||||
for here := source; here != dest; {
|
||||
temp++
|
||||
if temp > 4096 {
|
||||
fmt.Println("Loop?")
|
||||
time.Sleep(time.Second)
|
||||
return false
|
||||
}
|
||||
nextPort := here.core.DEBUG_switchLookup(coords)
|
||||
// First check if "here" is accepting packets from the previous node
|
||||
// TODO explain how this works
|
||||
ports := here.core.DEBUG_getPeers().DEBUG_getPorts()
|
||||
nextPeer := ports[nextPort]
|
||||
if nextPeer == nil {
|
||||
fmt.Println("Peer associated with next port is nil")
|
||||
return false
|
||||
}
|
||||
next := store[nextPeer.DEBUG_getSigKey()]
|
||||
/*
|
||||
if next == here {
|
||||
//for idx, link := range here.links {
|
||||
// fmt.Println("DUMP:", idx, link.nodeID)
|
||||
//}
|
||||
if nextPort != 0 { panic("This should not be") }
|
||||
fmt.Println("Failed to route:", source.index, here.index, dest.index, oldTTL, ttl)
|
||||
//here.table.DEBUG_dumpTable()
|
||||
//fmt.Println("Ports:", here.nodeID, here.ports)
|
||||
return false
|
||||
panic(fmt.Sprintln("Routing Loop:",
|
||||
source.index,
|
||||
here.index,
|
||||
dest.index))
|
||||
}
|
||||
*/
|
||||
if temp > 4090 {
|
||||
fmt.Println("DEBUG:",
|
||||
source.index, source.core.DEBUG_getLocator(),
|
||||
here.index, here.core.DEBUG_getLocator(),
|
||||
dest.index, dest.core.DEBUG_getLocator())
|
||||
//here.core.DEBUG_getSwitchTable().DEBUG_dumpTable()
|
||||
}
|
||||
if here != source {
|
||||
// This is sufficient to check for routing loops or blackholes
|
||||
//break
|
||||
}
|
||||
if here == next {
|
||||
fmt.Println("Drop:", source.index, here.index, dest.index, oldTTL)
|
||||
return false
|
||||
}
|
||||
here = next
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func stressTest(store map[[32]byte]*Node) {
|
||||
fmt.Println("Stress testing network...")
|
||||
nNodes := len(store)
|
||||
dests := make([][]byte, 0, nNodes)
|
||||
for _, dest := range store {
|
||||
loc := dest.core.DEBUG_getLocator()
|
||||
coords := loc.DEBUG_getCoords()
|
||||
dests = append(dests, coords)
|
||||
}
|
||||
lookups := 0
|
||||
start := time.Now()
|
||||
for _, source := range store {
|
||||
for _, coords := range dests {
|
||||
source.core.DEBUG_switchLookup(coords)
|
||||
lookups++
|
||||
}
|
||||
}
|
||||
timed := time.Since(start)
|
||||
fmt.Printf("%d lookups in %s (%f lookups per second)\n",
|
||||
lookups,
|
||||
timed,
|
||||
float64(lookups)/timed.Seconds())
|
||||
}
|
||||
|
||||
func pingNodes(store map[[32]byte]*Node) {
|
||||
fmt.Println("Sending pings...")
|
||||
nNodes := len(store)
|
||||
count := 0
|
||||
equiv := func(a []byte, b []byte) bool {
|
||||
if len(a) != len(b) {
|
||||
return false
|
||||
}
|
||||
for idx := 0; idx < len(a); idx++ {
|
||||
if a[idx] != b[idx] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
for _, source := range store {
|
||||
count++
|
||||
//if count > 16 { break }
|
||||
fmt.Printf("Sending packets from node %d/%d (%d)\n", count, nNodes, source.index)
|
||||
sourceKey := source.core.DEBUG_getEncryptionPublicKey()
|
||||
payload := sourceKey[:]
|
||||
sourceAddr := source.core.DEBUG_getAddr()[:]
|
||||
sendTo := func(bs []byte, destAddr []byte) {
|
||||
packet := make([]byte, 40+len(bs))
|
||||
copy(packet[8:24], sourceAddr)
|
||||
copy(packet[24:40], destAddr)
|
||||
copy(packet[40:], bs)
|
||||
packet[0] = 6 << 4
|
||||
source.send <- packet
|
||||
}
|
||||
destCount := 0
|
||||
for _, dest := range store {
|
||||
destCount += 1
|
||||
fmt.Printf("%d Nodes, %d Send, %d Recv\n", nNodes, count, destCount)
|
||||
if dest == source {
|
||||
fmt.Println("Skipping self")
|
||||
continue
|
||||
}
|
||||
destAddr := dest.core.DEBUG_getAddr()[:]
|
||||
ticker := time.NewTicker(150 * time.Millisecond)
|
||||
sendTo(payload, destAddr)
|
||||
for loop := true; loop; {
|
||||
select {
|
||||
case packet := <-dest.recv:
|
||||
{
|
||||
if equiv(payload, packet[len(packet)-len(payload):]) {
|
||||
loop = false
|
||||
}
|
||||
}
|
||||
case <-ticker.C:
|
||||
sendTo(payload, destAddr)
|
||||
//dumpDHTSize(store) // note that this uses racey functions to read things...
|
||||
}
|
||||
}
|
||||
ticker.Stop()
|
||||
}
|
||||
//break // Only try sending pings from 1 node
|
||||
// This is because, for some reason, stopTun() doesn't always close it
|
||||
// And if two tuns are up, bad things happen (sends via wrong interface)
|
||||
}
|
||||
fmt.Println("Finished pinging nodes")
|
||||
}
|
||||
|
||||
func pingBench(store map[[32]byte]*Node) {
|
||||
fmt.Println("Benchmarking pings...")
|
||||
nPings := 0
|
||||
payload := make([]byte, 1280+40) // MTU + ipv6 header
|
||||
var timed time.Duration
|
||||
//nNodes := len(store)
|
||||
count := 0
|
||||
for _, source := range store {
|
||||
count++
|
||||
//fmt.Printf("Sending packets from node %d/%d (%d)\n", count, nNodes, source.index)
|
||||
getPing := func(key [32]byte, decodedCoords []byte) []byte {
|
||||
// TODO write some function to do this the right way, put... somewhere...
|
||||
coords := DEBUG_wire_encode_coords(decodedCoords)
|
||||
packet := make([]byte, 0, len(key)+len(coords)+len(payload))
|
||||
packet = append(packet, key[:]...)
|
||||
packet = append(packet, coords...)
|
||||
packet = append(packet, payload[:]...)
|
||||
return packet
|
||||
}
|
||||
for _, dest := range store {
|
||||
key := dest.core.DEBUG_getEncryptionPublicKey()
|
||||
loc := dest.core.DEBUG_getLocator()
|
||||
coords := loc.DEBUG_getCoords()
|
||||
ping := getPing(key, coords)
|
||||
// TODO make sure the session is open first
|
||||
start := time.Now()
|
||||
for i := 0; i < 1000000; i++ {
|
||||
source.send <- ping
|
||||
nPings++
|
||||
}
|
||||
timed += time.Since(start)
|
||||
break
|
||||
}
|
||||
break
|
||||
}
|
||||
fmt.Printf("Sent %d pings in %s (%f per second)\n",
|
||||
nPings,
|
||||
timed,
|
||||
float64(nPings)/timed.Seconds())
|
||||
}
|
||||
|
||||
func dumpStore(store map[NodeID]*Node) {
|
||||
for _, node := range store {
|
||||
fmt.Println("DUMPSTORE:", node.index, node.core.DEBUG_getLocator())
|
||||
node.core.DEBUG_getSwitchTable().DEBUG_dumpTable()
|
||||
}
|
||||
}
|
||||
|
||||
func dumpDHTSize(store map[[32]byte]*Node) {
|
||||
var min, max, sum int
|
||||
for _, node := range store {
|
||||
num := node.core.DEBUG_getDHTSize()
|
||||
min = num
|
||||
max = num
|
||||
break
|
||||
}
|
||||
for _, node := range store {
|
||||
num := node.core.DEBUG_getDHTSize()
|
||||
if num < min {
|
||||
min = num
|
||||
}
|
||||
if num > max {
|
||||
max = num
|
||||
}
|
||||
sum += num
|
||||
}
|
||||
avg := float64(sum) / float64(len(store))
|
||||
fmt.Printf("DHT min %d / avg %f / max %d\n", min, avg, max)
|
||||
}
|
||||
|
||||
func (n *Node) startTCP(listen string) {
|
||||
n.core.DEBUG_setupAndStartGlobalTCPInterface(listen)
|
||||
}
|
||||
|
||||
func (n *Node) connectTCP(remoteAddr string) {
|
||||
n.core.AddPeer(remoteAddr, remoteAddr)
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
var cpuprofile = flag.String("cpuprofile", "", "write cpu profile `file`")
|
||||
var memprofile = flag.String("memprofile", "", "write memory profile to this file")
|
||||
|
||||
func main() {
|
||||
flag.Parse()
|
||||
if *cpuprofile != "" {
|
||||
f, err := os.Create(*cpuprofile)
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("could not create CPU profile: ", err))
|
||||
}
|
||||
if err := pprof.StartCPUProfile(f); err != nil {
|
||||
panic(fmt.Sprintf("could not start CPU profile: ", err))
|
||||
}
|
||||
defer pprof.StopCPUProfile()
|
||||
}
|
||||
if *memprofile != "" {
|
||||
f, err := os.Create(*memprofile)
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("could not create memory profile: ", err))
|
||||
}
|
||||
defer func() { pprof.WriteHeapProfile(f); f.Close() }()
|
||||
}
|
||||
fmt.Println("Test")
|
||||
Util_testAddrIDMask()
|
||||
idxstore := makeStoreSquareGrid(4)
|
||||
//idxstore := makeStoreStar(256)
|
||||
//idxstore := loadGraph("misc/sim/hype-2016-09-19.list")
|
||||
//idxstore := loadGraph("misc/sim/fc00-2017-08-12.txt")
|
||||
//idxstore := loadGraph("skitter")
|
||||
kstore := getKeyedStore(idxstore)
|
||||
//*
|
||||
logger := log.New(os.Stderr, "", log.Flags())
|
||||
for _, n := range kstore {
|
||||
n.core.DEBUG_setLogger(logger)
|
||||
}
|
||||
//*/
|
||||
startNetwork(kstore)
|
||||
//time.Sleep(10*time.Second)
|
||||
// Note that testPaths only works if pressure is turned off
|
||||
// Otherwise congestion can lead to routing loops?
|
||||
for finished := false; !finished; {
|
||||
finished = testPaths(kstore)
|
||||
}
|
||||
pingNodes(kstore)
|
||||
//pingBench(kstore) // Only after disabling debug output
|
||||
//stressTest(kstore)
|
||||
//time.Sleep(120 * time.Second)
|
||||
dumpDHTSize(kstore) // note that this uses racey functions to read things...
|
||||
if false {
|
||||
// This connects the sim to the local network
|
||||
for _, node := range kstore {
|
||||
node.startTCP("localhost:0")
|
||||
node.connectTCP("localhost:12345")
|
||||
break // just 1
|
||||
}
|
||||
for _, node := range kstore {
|
||||
go func() {
|
||||
// Just dump any packets sent to this node
|
||||
for range node.recv {
|
||||
}
|
||||
}()
|
||||
}
|
||||
var block chan struct{}
|
||||
<-block
|
||||
}
|
||||
runtime.GC()
|
||||
}
|
||||
@ -250,7 +250,8 @@ func (intf *link) handler() (chan struct{}, error) {
|
||||
intf.links.core.log.Infof("Connected %s: %s, source %s",
|
||||
strings.ToUpper(intf.info.linkType), themString, intf.info.local)
|
||||
// Run the handler
|
||||
err = intf.links.core.PacketConn.HandleConn(ed25519.PublicKey(intf.info.key[:]), intf.conn)
|
||||
var metric uint64 // TODO exchange metric in matadata, use max value
|
||||
err = intf.links.core.PacketConn.HandleConn(ed25519.PublicKey(intf.info.key[:]), intf.conn, metric)
|
||||
// TODO don't report an error if it's just a 'use of closed network connection'
|
||||
if err != nil {
|
||||
intf.links.core.log.Infof("Disconnected %s: %s, source %s; error: %s",
|
||||
|
||||
Loading…
Reference in New Issue
Block a user