func EchoStreamHandler(stream inet.Stream) {
c := stream.Conn()
log.Debugf("%s echoing %s", c.LocalPeer(), c.RemotePeer())
go func() {
defer stream.Close()
io.Copy(stream, stream)
}()
}
func EchoStreamHandler(stream inet.Stream) {
go func() {
defer stream.Close()
// pull out the ipfs conn
c := stream.Conn()
log.Infof("%s ponging to %s", c.LocalPeer(), c.RemotePeer())
buf := make([]byte, 4)
for {
if _, err := stream.Read(buf); err != nil {
if err != io.EOF {
log.Info("ping receive error:", err)
}
return
}
if !bytes.Equal(buf, []byte("ping")) {
log.Infof("ping receive error: ping != %s %v", buf, buf)
return
}
if _, err := stream.Write([]byte("pong")); err != nil {
log.Info("pond send error:", err)
return
}
}
}()
}
func (ids *IDService) ResponseHandler(s inet.Stream) {
defer s.Close()
c := s.Conn()
r := ggio.NewDelimitedReader(s, 2048)
mes := pb.Identify{}
if err := r.ReadMsg(&mes); err != nil {
return
}
ids.consumeMessage(&mes, c)
log.Debugf("%s received message from %s %s", ID,
c.RemotePeer(), c.RemoteMultiaddr())
}
// HandleSync reads the next name off the Stream, and calls a handler function
// This is done synchronously. The handler function will return before
// HandleSync returns.
func (m *Mux) HandleSync(s inet.Stream) {
ctx := context.Background()
name, handler, err := m.ReadHeader(s)
if err != nil {
err = fmt.Errorf("protocol mux error: %s", err)
log.Event(ctx, "muxError", lgbl.Error(err))
s.Close()
return
}
log.Debugf("muxer handle protocol %s: %s", s.Conn().RemotePeer(), name)
handler(s)
}
// newStreamHandler is the remote-opened stream handler for inet.Network
// TODO: this feels a bit wonky
func (h *BasicHost) newStreamHandler(s inet.Stream) {
protoID, handle, err := h.Mux().Negotiate(s)
if err != nil {
if err == io.EOF {
log.Debugf("protocol EOF: %s", s.Conn().RemotePeer())
} else {
log.Warning("protocol mux failed: %s", err)
}
return
}
logStream := mstream.WrapStream(s, protocol.ID(protoID), h.bwc)
go handle(logStream)
}
func (p *PingService) PingHandler(s inet.Stream) {
buf := make([]byte, PingSize)
for {
_, err := io.ReadFull(s, buf)
if err != nil {
log.Debug(err)
return
}
_, err = s.Write(buf)
if err != nil {
log.Debug(err)
return
}
}
}
// handleStream is our own handler, which returns an error for simplicity.
func (rs *RelayService) handleStream(s inet.Stream) error {
defer s.Close()
// read the header (src and dst peer.IDs)
src, dst, err := ReadHeader(s)
if err != nil {
return fmt.Errorf("stream with bad header: %s", err)
}
local := rs.host.ID()
switch {
case src == local:
return fmt.Errorf("relaying from self")
case dst == local: // it's for us! yaaay.
log.Debugf("%s consuming stream from %s", local, src)
return rs.consumeStream(s)
default: // src and dst are not local. relay it.
log.Debugf("%s relaying stream %s <--> %s", local, src, dst)
return rs.pipeStream(src, dst, s)
}
}
func ping(s inet.Stream) (time.Duration, error) {
buf := make([]byte, PingSize)
u.NewTimeSeededRand().Read(buf)
before := time.Now()
_, err := s.Write(buf)
if err != nil {
return 0, err
}
rbuf := make([]byte, PingSize)
_, err = io.ReadFull(s, rbuf)
if err != nil {
return 0, err
}
if !bytes.Equal(buf, rbuf) {
return 0, errors.New("ping packet was incorrect!")
}
return time.Now().Sub(before), nil
}
func (ids *IDService) RequestHandler(s inet.Stream) {
defer s.Close()
c := s.Conn()
bwc := ids.Host.GetBandwidthReporter()
s = mstream.WrapStream(s, ID, bwc)
w := ggio.NewDelimitedWriter(s)
mes := pb.Identify{}
ids.populateMessage(&mes, s.Conn())
w.WriteMsg(&mes)
log.Debugf("%s sent message to %s %s", ID,
c.RemotePeer(), c.RemoteMultiaddr())
}
func TestNotifications(t *testing.T) {
ctx := context.Background()
swarms := makeSwarms(ctx, t, 5)
defer func() {
for _, s := range swarms {
s.Close()
}
}()
timeout := 5 * time.Second
// signup notifs
notifiees := make([]*netNotifiee, len(swarms))
for i, swarm := range swarms {
n := newNetNotifiee()
swarm.Notify(n)
notifiees[i] = n
}
connectSwarms(t, ctx, swarms)
<-time.After(time.Millisecond)
// should've gotten 5 by now.
// test everyone got the correct connection opened calls
for i, s := range swarms {
n := notifiees[i]
notifs := make(map[peer.ID][]inet.Conn)
for j, s2 := range swarms {
if i == j {
continue
}
// this feels a little sketchy, but its probably okay
for len(s.ConnectionsToPeer(s2.LocalPeer())) != len(notifs[s2.LocalPeer()]) {
select {
case c := <-n.connected:
nfp := notifs[c.RemotePeer()]
notifs[c.RemotePeer()] = append(nfp, c)
case <-time.After(timeout):
t.Fatal("timeout")
}
}
}
for p, cons := range notifs {
expect := s.ConnectionsToPeer(p)
if len(expect) != len(cons) {
t.Fatal("got different number of connections")
}
for _, c := range cons {
var found bool
for _, c2 := range expect {
if c == c2 {
found = true
break
}
}
if !found {
t.Fatal("connection not found!")
}
}
}
}
complement := func(c inet.Conn) (*Swarm, *netNotifiee, *Conn) {
for i, s := range swarms {
for _, c2 := range s.Connections() {
if c.LocalMultiaddr().Equal(c2.RemoteMultiaddr()) &&
c2.LocalMultiaddr().Equal(c.RemoteMultiaddr()) {
return s, notifiees[i], c2
}
}
}
t.Fatal("complementary conn not found", c)
return nil, nil, nil
}
testOCStream := func(n *netNotifiee, s inet.Stream) {
var s2 inet.Stream
select {
case s2 = <-n.openedStream:
t.Log("got notif for opened stream")
case <-time.After(timeout):
t.Fatal("timeout")
}
if s != s2 {
t.Fatal("got incorrect stream", s.Conn(), s2.Conn())
}
select {
case s2 = <-n.closedStream:
t.Log("got notif for closed stream")
case <-time.After(timeout):
t.Fatal("timeout")
}
if s != s2 {
t.Fatal("got incorrect stream", s.Conn(), s2.Conn())
}
}
streams := make(chan inet.Stream)
for _, s := range swarms {
s.SetStreamHandler(func(s inet.Stream) {
streams <- s
s.Close()
})
}
// open a streams in each conn
for i, s := range swarms {
for _, c := range s.Connections() {
_, n2, _ := complement(c)
st1, err := c.NewStream()
if err != nil {
t.Error(err)
} else {
st1.Write([]byte("hello"))
st1.Close()
testOCStream(notifiees[i], st1)
st2 := <-streams
testOCStream(n2, st2)
}
}
}
// close conns
for i, s := range swarms {
n := notifiees[i]
for _, c := range s.Connections() {
_, n2, c2 := complement(c)
c.Close()
c2.Close()
var c3, c4 inet.Conn
select {
case c3 = <-n.disconnected:
case <-time.After(timeout):
t.Fatal("timeout")
}
if c != c3 {
t.Fatal("got incorrect conn", c, c3)
}
select {
case c4 = <-n2.disconnected:
case <-time.After(timeout):
t.Fatal("timeout")
}
if c2 != c4 {
t.Fatal("got incorrect conn", c, c2)
}
}
}
}
func WrapStream(base inet.Stream, pid protocol.ID, bwc metrics.Reporter) inet.Stream {
return newMeteredStream(base, pid, base.Conn().RemotePeer(), bwc.LogRecvMessageStream, bwc.LogSentMessageStream)
}