mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-25 13:07:17 +00:00
117 lines
2.3 KiB
Go
117 lines
2.3 KiB
Go
package whisper
|
|
|
|
import (
|
|
"fmt"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/p2p"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"gopkg.in/fatih/set.v0"
|
|
)
|
|
|
|
const (
|
|
protocolVersion = 0x02
|
|
)
|
|
|
|
type peer struct {
|
|
host *Whisper
|
|
peer *p2p.Peer
|
|
ws p2p.MsgReadWriter
|
|
|
|
// XXX Eventually this is going to reach exceptional large space. We need an expiry here
|
|
known *set.Set
|
|
|
|
quit chan struct{}
|
|
}
|
|
|
|
func NewPeer(host *Whisper, p *p2p.Peer, ws p2p.MsgReadWriter) *peer {
|
|
return &peer{host, p, ws, set.New(), make(chan struct{})}
|
|
}
|
|
|
|
func (self *peer) init() error {
|
|
if err := self.handleStatus(); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (self *peer) start() {
|
|
go self.update()
|
|
self.peer.Debugln("whisper started")
|
|
}
|
|
|
|
func (self *peer) stop() {
|
|
self.peer.Debugln("whisper stopped")
|
|
|
|
close(self.quit)
|
|
}
|
|
|
|
func (self *peer) update() {
|
|
relay := time.NewTicker(300 * time.Millisecond)
|
|
out:
|
|
for {
|
|
select {
|
|
case <-relay.C:
|
|
err := self.broadcast(self.host.envelopes())
|
|
if err != nil {
|
|
self.peer.Infoln("broadcast err:", err)
|
|
break out
|
|
}
|
|
|
|
case <-self.quit:
|
|
break out
|
|
}
|
|
}
|
|
}
|
|
|
|
func (self *peer) broadcast(envelopes []*Envelope) error {
|
|
envs := make([]interface{}, len(envelopes))
|
|
i := 0
|
|
for _, envelope := range envelopes {
|
|
if !self.known.Has(envelope.Hash()) {
|
|
envs[i] = envelope
|
|
self.known.Add(envelope.Hash())
|
|
i++
|
|
}
|
|
}
|
|
|
|
if i > 0 {
|
|
if err := p2p.Send(self.ws, envelopesMsg, envs[:i]); err != nil {
|
|
return err
|
|
}
|
|
self.peer.DebugDetailln("broadcasted", i, "message(s)")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (self *peer) addKnown(envelope *Envelope) {
|
|
self.known.Add(envelope.Hash())
|
|
}
|
|
|
|
func (self *peer) handleStatus() error {
|
|
ws := self.ws
|
|
if err := p2p.SendItems(ws, statusMsg, protocolVersion); err != nil {
|
|
return err
|
|
}
|
|
msg, err := ws.ReadMsg()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if msg.Code != statusMsg {
|
|
return fmt.Errorf("peer send %x before status msg", msg.Code)
|
|
}
|
|
s := rlp.NewStream(msg.Payload)
|
|
if _, err := s.List(); err != nil {
|
|
return fmt.Errorf("bad status message: %v", err)
|
|
}
|
|
pv, err := s.Uint()
|
|
if err != nil {
|
|
return fmt.Errorf("bad status message: %v", err)
|
|
}
|
|
if pv != protocolVersion {
|
|
return fmt.Errorf("protocol version mismatch %d != %d", pv, protocolVersion)
|
|
}
|
|
return msg.Discard() // ignore anything after protocol version
|
|
}
|