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p2p: limit ping requests from a single peer (#8113)

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see:
https://github.com/ethereum/go-ethereum/pull/27887
This commit is contained in:
battlmonstr 2023-09-06 17:56:03 +02:00 committed by GitHub
parent ba1e4679fc
commit d6df923dd8
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2 changed files with 13 additions and 1 deletions
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12
p2p/peer.go
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@ -114,6 +114,7 @@ type Peer struct {
wg sync.WaitGroup
protoErr chan *PeerError
closed chan struct{}
pingRecv chan struct{}
disc chan *PeerError
// events receives message send / receive events if set
@ -219,6 +220,7 @@ func newPeer(logger log.Logger, conn *conn, protocols []Protocol, pubkey [64]byt
disc: make(chan *PeerError),
protoErr: make(chan *PeerError, len(protomap)+1), // protocols + pingLoop
closed: make(chan struct{}),
pingRecv: make(chan struct{}, 16),
log: logger.New("id", conn.node.ID(), "conn", conn.flags),
pubkey: pubkey,
metricsEnabled: metricsEnabled,
@ -287,6 +289,11 @@ func (p *Peer) pingLoop() {
return
}
ping.Reset(pingInterval)
case <-p.pingRecv:
if err := SendItems(p.rw, pongMsg); err != nil {
p.protoErr <- NewPeerError(PeerErrorPongFailure, DiscNetworkError, err, "Failed to send pongMsg")
return
}
case <-p.closed:
return
}
@ -314,7 +321,10 @@ func (p *Peer) handle(msg Msg) error {
switch {
case msg.Code == pingMsg:
msg.Discard()
go SendItems(p.rw, pongMsg)
select {
case p.pingRecv <- struct{}{}:
case <-p.closed:
}
case msg.Code == discMsg:
// This is the last message.
// We don't need to discard because the connection will be closed after it.

2
p2p/peer_error.go
View File

@ -26,6 +26,7 @@ const (
PeerErrorInvalidMessageCode PeerErrorCode = iota
PeerErrorInvalidMessage
PeerErrorPingFailure
PeerErrorPongFailure
PeerErrorDiscReason
PeerErrorDiscReasonRemote
PeerErrorMessageReceive
@ -47,6 +48,7 @@ var peerErrorCodeToString = map[PeerErrorCode]string{
PeerErrorInvalidMessageCode: "invalid message code",
PeerErrorInvalidMessage: "invalid message",
PeerErrorPingFailure: "ping failure",
PeerErrorPongFailure: "pong failure",
PeerErrorDiscReason: "disconnect reason",
PeerErrorDiscReasonRemote: "remote disconnect reason",
PeerErrorMessageReceive: "failed to receive a message",