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 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 (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)
}
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())
}
// 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)
}
}