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package p2p
import (
"io/ioutil"
"math/rand"
"os"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
cmn "github.com/tendermint/tmlibs/common"
wire "github.com/tendermint/go-wire"
)
func TestPEXReactorBasic(t *testing.T) {
assert, require := assert.New(t), require.New(t)
dir, err := ioutil.TempDir("", "pex_reactor")
require.Nil(err)
defer os.RemoveAll(dir)
book := NewAddrBook(dir+"addrbook.json", true)
r := NewPEXReactor(book)
assert.NotNil(r)
assert.NotEmpty(r.GetChannels())
}
func TestPEXReactorAddRemovePeer(t *testing.T) {
assert, require := assert.New(t), require.New(t)
dir, err := ioutil.TempDir("", "pex_reactor")
require.Nil(err)
defer os.RemoveAll(dir)
book := NewAddrBook(dir+"addrbook.json", true)
r := NewPEXReactor(book)
size := book.Size()
peer := createRandomPeer(false)
r.AddPeer(peer)
assert.Equal(size+1, book.Size())
r.RemovePeer(peer, "peer not available")
assert.Equal(size+1, book.Size())
outboundPeer := createRandomPeer(true)
r.AddPeer(outboundPeer)
assert.Equal(size+1, book.Size(), "outbound peers should not be added to the address book")
r.RemovePeer(outboundPeer, "peer not available")
assert.Equal(size+1, book.Size())
}
func TestPEXReactorRunning(t *testing.T) {
require := require.New(t)
N := 3
switches := make([]*Switch, N)
dir, err := ioutil.TempDir("", "pex_reactor")
require.Nil(err)
defer os.RemoveAll(dir)
book := NewAddrBook(dir+"addrbook.json", false)
// create switches
for i := 0; i < N; i++ {
switches[i] = makeSwitch(i, "127.0.0.1", "123.123.123", func(i int, sw *Switch) *Switch {
r := NewPEXReactor(book)
r.SetEnsurePeersPeriod(250 * time.Millisecond)
sw.AddReactor("pex", r)
return sw
})
}
// fill the address book and add listeners
for _, s := range switches {
addr, _ := NewNetAddressString(s.NodeInfo().ListenAddr)
book.AddAddress(addr, addr)
s.AddListener(NewDefaultListener("tcp", s.NodeInfo().ListenAddr, true))
}
// start switches
for _, s := range switches {
_, err := s.Start() // start switch and reactors
require.Nil(err)
}
time.Sleep(1 * time.Second)
// check peers are connected after some time
for _, s := range switches {
outbound, inbound, _ := s.NumPeers()
if outbound+inbound == 0 {
t.Errorf("%v expected to be connected to at least one peer", s.NodeInfo().ListenAddr)
}
}
// stop them
for _, s := range switches {
s.Stop()
}
}
func TestPEXReactorReceive(t *testing.T) {
assert, require := assert.New(t), require.New(t)
dir, err := ioutil.TempDir("", "pex_reactor")
require.Nil(err)
defer os.RemoveAll(dir)
book := NewAddrBook(dir+"addrbook.json", true)
r := NewPEXReactor(book)
peer := createRandomPeer(false)
size := book.Size()
netAddr, _ := NewNetAddressString(peer.ListenAddr)
addrs := []*NetAddress{netAddr}
msg := wire.BinaryBytes(struct{ PexMessage }{&pexAddrsMessage{Addrs: addrs}})
r.Receive(PexChannel, peer, msg)
assert.Equal(size+1, book.Size())
msg = wire.BinaryBytes(struct{ PexMessage }{&pexRequestMessage{}})
r.Receive(PexChannel, peer, msg)
}
func TestPEXReactorAbuseFromPeer(t *testing.T) {
assert, require := assert.New(t), require.New(t)
dir, err := ioutil.TempDir("", "pex_reactor")
require.Nil(err)
defer os.RemoveAll(dir)
book := NewAddrBook(dir+"addrbook.json", true)
r := NewPEXReactor(book)
r.SetMaxMsgCountByPeer(5)
peer := createRandomPeer(false)
msg := wire.BinaryBytes(struct{ PexMessage }{&pexRequestMessage{}})
for i := 0; i < 10; i++ {
r.Receive(PexChannel, peer, msg)
}
assert.True(r.ReachedMaxMsgCountForPeer(peer.ListenAddr))
}
func createRandomPeer(outbound bool) *Peer {
addr := cmn.Fmt("%v.%v.%v.%v:46656", rand.Int()%256, rand.Int()%256, rand.Int()%256, rand.Int()%256)
netAddr, _ := NewNetAddressString(addr)
return &Peer{
Key: cmn.RandStr(12),
NodeInfo: &NodeInfo{
ListenAddr: addr,
},
outbound: outbound,
mconn: &MConnection{RemoteAddress: netAddr},
}
}