func TestInitiateHandshakes(t *testing.T) {
Convey("Sends out handshake request to every IP in list", t, func() {
s := NewBTService(port, []byte(peerIDRemote))
mc := NewMockConnectionFetcher()
s.ConnectionFetcher = mc
s.AddHash(hash)
_ = s.StartListening()
// TODO: check that peer data is saved within service data structure
peers := make([]structure.Peer, 2)
peers[0] = structure.Peer{IP: net.IPv4(192, 168, 1, 1), Port: 55556}
peers[1] = structure.Peer{IP: net.IPv4(192, 168, 1, 2), Port: 55557}
s.InitiateHandshakes(hash, peers)
for _, p := range peers {
c0 := mc.Conns[p.AddrString()].Conn.(*MockConnection)
hs, err := structure.ReadHandshake(bytes.NewReader(<-c0.ReceiveBytesChan))
So(hs, ShouldNotBeNil)
So(err, ShouldBeNil)
hs, _ = structure.NewHandshake(hash, []byte(peerIDClient))
c0.SendMessage(hs)
}
time.Sleep(time.Millisecond)
So(len(s.Peers), ShouldEqual, len(peers))
_ = s.StopListening()
time.Sleep(time.Millisecond)
So(s.Listening, ShouldBeFalse)
})
}
func TestAcceptHandshake(t *testing.T) {
Convey("Accepts a handshake and adds to the connection list", t, func() {
s := NewBTService(port, []byte(peerIDRemote))
s.AddHash(hash)
_ = s.StartListening()
So(s.Listener, ShouldNotBeNil)
So(s.Listening, ShouldBeTrue)
addr, _ := net.ResolveTCPAddr("tcp", "localhost:55555")
conn, err := net.DialTCP("tcp", nil, addr)
So(err, ShouldBeNil)
handshake := "\x13\x42\x69\x74\x54\x6f\x72\x72\x65\x6e\x74\x20\x70\x72\x6f\x74\x6f\x63\x6f\x6c\x00\x00\x00\x00\x00\x10\x00\x05\x6f\xda\xb6\xc1\x9f\x72\x14\x76\xfa\xca\xab\x36\x60\x8a\x87\x7a\x2a\xac\xbf\xc9\x2d\x55\x54\x33\x34\x34\x30\x2d\xcf\x9f\x51\x2b\xce\x01\x31\xf9\x38\x6f\xb6\x98"
_, _ = conn.Write([]byte(handshake))
respHandshake, err := structure.ReadHandshake(conn)
time.Sleep(time.Millisecond)
So(err, ShouldBeNil)
So(respHandshake, ShouldNotBeNil)
So(len(s.Peers), ShouldEqual, 1)
_ = s.StopListening()
time.Sleep(time.Millisecond)
So(s.Listening, ShouldBeFalse)
})
}
func TestConversation(t *testing.T) {
Convey("Receives Bitfield message and sends Interested message", t, func(ctx C) {
s := NewBTService(port, []byte(peerIDRemote))
mc := NewMockConnectionFetcher()
s.ConnectionFetcher = mc
s.AddHash(hash)
_ = s.StartListening()
// TODO: check that peer data is saved within service data structure
peers := make([]structure.Peer, 1)
peers[0] = structure.Peer{IP: net.IPv4(192, 168, 1, 1), Port: 55556}
// peers[1] = structure.Peer{IP: net.IPv4(192, 168, 1, 2), Port: 55557}
s.InitiateHandshakes(hash, peers)
wg := sync.WaitGroup{}
wg.Add(len(peers))
for _, p := range peers {
go func(pp structure.Peer) {
c0 := mc.Conns[pp.AddrString()].Conn.(*MockConnection)
hs, err := structure.ReadHandshake(bytes.NewReader(<-c0.ReceiveBytesChan))
ctx.So(hs, ShouldNotBeNil)
ctx.So(err, ShouldBeNil)
hs, _ = structure.NewHandshake(hash, []byte(peerIDClient))
t.Log("---TEST--- Send Handshake")
c0.SendMessage(hs)
bf := structure.BitFieldFromHexString("\xff\xff\xff\x01")
msg0 := structure.NewBitFieldMessage(bf)
c0.SendMessage(msg0)
m, err := ReadMessageOrTimeout(c0, ctx)
ctx.So(err, ShouldBeNil)
ctx.So(m.GetType(), ShouldEqual, structure.MessageTypeInterested)
// TODO: Check why byte equality doesn't work
btc := s.LookupConn(pp.AddrString())
t.Logf("BTC: %q\n", btc.BitField.String())
t.Logf("BF : %q\n", bf.String())
ctx.So(bf.String(), ShouldEqual, btc.BitField.String())
ctx.So(btc.PeerChoking, ShouldBeTrue)
msg1 := structure.NewUnchokeMessage()
c0.SendMessage(msg1)
m, err = ReadMessageOrTimeout(c0, ctx)
ctx.So(btc.PeerChoking, ShouldBeFalse)
ctx.So(err, ShouldBeNil)
ctx.So(m.GetType(), ShouldEqual, structure.MessageTypeRequest)
wg.Done()
}(p)
}
wg.Wait()
_ = s.StopListening()
})
}
func TestHave(t *testing.T) {
Convey("Receives Have Messages and update BitField", t, func(ctx C) {
s := NewBTService(port, []byte(peerIDRemote))
mc := NewMockConnectionFetcher()
s.ConnectionFetcher = mc
s.AddHash(hash)
_ = s.StartListening()
// TODO: check that peer data is saved within service data structure
peers := make([]structure.Peer, 1)
peers[0] = structure.Peer{IP: net.IPv4(192, 168, 1, 1), Port: 55557}
// peers[1] = structure.Peer{IP: net.IPv4(192, 168, 1, 2), Port: 55557}
s.InitiateHandshakes(hash, peers)
wg := sync.WaitGroup{}
wg.Add(len(peers))
for _, p := range peers {
go func(pp structure.Peer) {
c0 := mc.Conns[pp.AddrString()].Conn.(*MockConnection)
hs, err := structure.ReadHandshake(bytes.NewReader(<-c0.ReceiveBytesChan))
ctx.So(hs, ShouldNotBeNil)
ctx.So(err, ShouldBeNil)
hs, _ = structure.NewHandshake(hash, []byte(peerIDClient))
c0.SendMessage(hs)
bf := structure.BitFieldFromHexString("\x00\x00\x00\x01")
msg0 := structure.NewBitFieldMessage(bf)
c0.SendMessage(msg0)
m, err := ReadMessageOrTimeout(c0, ctx)
ctx.So(err, ShouldBeNil)
ctx.So(m.GetType(), ShouldEqual, structure.MessageTypeInterested)
haveMsg := structure.NewHaveMessage(0)
c0.SendMessage(haveMsg)
time.Sleep(time.Millisecond)
// TODO: Check why byte equality doesn't work
btc := s.LookupConn(pp.AddrString())
ctx.Printf("BTC: %q\n", btc.BitField.String())
ctx.Printf("BF : %q\n", bf.String())
updatedBF := structure.BitFieldFromHexString("\x80\x00\x00\x01")
ctx.Printf("UBF: %q\n", updatedBF.String())
isEqual := updatedBF.String() == btc.BitField.String()
ctx.So(isEqual, ShouldBeTrue)
wg.Done()
}(p)
}
wg.Wait()
_ = s.StopListening()
time.Sleep(time.Millisecond)
})
}
func handleHandshake(c *BTConn) (hs *structure.Handshake, err error) {
// First connection, assume handshake message
// Get the protocol name length
hs, err = structure.ReadHandshake(c)
if err != nil {
log.Printf("[handleHandshake] error: %q", err.Error())
return nil, err
}
log.Printf("[handleHandshake] %q", hs)
return hs, nil
}