func randPeer(t *testing.T) peer.ID {
p, err := testutil.RandPeerID()
if err != nil {
t.Fatal(err)
}
return p
}
func TestLatencyEWMAFun(t *testing.T) {
t.Skip("run it for fun")
m := peer.NewMetrics()
id, err := testutil.RandPeerID()
if err != nil {
t.Fatal(err)
}
mu := 100.0
sig := 10.0
next := func() time.Duration {
mu = (rand.NormFloat64() * sig) + mu
return time.Duration(mu)
}
print := func() {
fmt.Printf("%3.f %3.f --> %d\n", sig, mu, m.LatencyEWMA(id))
}
for {
select {
case <-time.After(200 * time.Millisecond):
m.RecordLatency(id, next())
print()
}
}
}
// create a 'Host' with a random peer to listen on the given address
func makeDummyHost(listen string) (host.Host, error) {
addr, err := ma.NewMultiaddr(listen)
if err != nil {
return nil, err
}
pid, err := testutil.RandPeerID()
if err != nil {
return nil, err
}
// bandwidth counter, should be optional in the future
bwc := metrics.NewBandwidthCounter()
// create a new swarm to be used by the service host
netw, err := swarm.NewNetwork(context.Background(), []ma.Multiaddr{addr}, pid, pstore.NewPeerstore(), bwc)
if err != nil {
return nil, err
}
log.Printf("I am %s/ipfs/%s\n", addr, pid.Pretty())
return bhost.New(netw), nil
}
func TestFilterAddrs(t *testing.T) {
m := func(s string) ma.Multiaddr {
maddr, err := ma.NewMultiaddr(s)
if err != nil {
t.Fatal(err)
}
return maddr
}
bad := []ma.Multiaddr{
m("/ip4/1.2.3.4/udp/1234"), // unreliable
m("/ip4/1.2.3.4/udp/1234/sctp/1234"), // not in manet
m("/ip4/1.2.3.4/udp/1234/utp"), // utp is broken
m("/ip4/1.2.3.4/udp/1234/udt"), // udt is broken on arm
m("/ip6/fe80::1/tcp/0"), // link local
m("/ip6/fe80::100/tcp/1234"), // link local
}
good := []ma.Multiaddr{
m("/ip4/127.0.0.1/tcp/0"),
m("/ip6/::1/tcp/0"),
}
goodAndBad := append(good, bad...)
// test filters
for _, a := range bad {
if addrutil.AddrUsable(a, true) {
t.Errorf("addr %s should be unusable", a)
}
}
for _, a := range good {
if !addrutil.AddrUsable(a, true) {
t.Errorf("addr %s should be usable", a)
}
}
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(bad), []ma.Multiaddr{})
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(good), good)
subtestAddrsEqual(t, addrutil.FilterUsableAddrs(goodAndBad), good)
// now test it with swarm
id, err := testutil.RandPeerID()
if err != nil {
t.Fatal(err)
}
ps := peer.NewPeerstore()
ctx := context.Background()
if _, err := NewNetwork(ctx, bad, id, ps, metrics.NewBandwidthCounter()); err == nil {
t.Fatal("should have failed to create swarm")
}
if _, err := NewNetwork(ctx, goodAndBad, id, ps, metrics.NewBandwidthCounter()); err != nil {
t.Fatal("should have succeeded in creating swarm", err)
}
}