mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-12-23 16:55:40 +00:00
460 lines
12 KiB
Go
460 lines
12 KiB
Go
package main
|
|
|
|
import "fmt"
|
|
import "bufio"
|
|
import "os"
|
|
import "strings"
|
|
import "strconv"
|
|
import "time"
|
|
import "log"
|
|
|
|
import "runtime/pprof"
|
|
import "flag"
|
|
|
|
import . "yggdrasil"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
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)
|
|
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)
|
|
ch := make(chan bool, 1)
|
|
ch <- true
|
|
doTicker := func() {
|
|
for range ticker.C {
|
|
select {
|
|
case ch <- true:
|
|
default:
|
|
}
|
|
}
|
|
}
|
|
go doTicker()
|
|
for loop := true; loop; {
|
|
select {
|
|
case packet := <-dest.recv:
|
|
{
|
|
if equiv(payload, packet[len(packet)-len(payload):]) {
|
|
loop = false
|
|
}
|
|
}
|
|
case <-ch:
|
|
sendTo(payload, destAddr)
|
|
}
|
|
}
|
|
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)
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
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 turend 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
|
|
}
|
|
}
|