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network: rework broadcasting functions, tune priorities

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This gives more priority to anything related to consensus.
This commit is contained in:
Roman Khimov 2020-01-22 11:01:13 +03:00
parent 34b863d645
commit f2ffffddb7
1 changed files with 38 additions and 10 deletions
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48
pkg/network/server.go
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@ -662,7 +662,10 @@ func (s *Server) handleMessage(peer Peer, msg *Message) error {
}
func (s *Server) handleNewPayload(p *consensus.Payload) {
s.relayInventoryCmd(CMDInv, payload.ConsensusType, p.Hash())
msg := s.MkMsg(CMDInv, payload.NewInventory(payload.ConsensusType, []util.Uint256{p.Hash()}))
// It's high priority because it directly affects consensus process,
// even though it's just an inv.
s.broadcastHPMessage(msg)
}
// getLastBlockTime returns unix timestamp for the moment when the last block
@ -676,25 +679,44 @@ func (s *Server) requestTx(hashes ...util.Uint256) {
return
}
s.relayInventoryCmd(CMDGetData, payload.TXType, hashes...)
msg := s.MkMsg(CMDGetData, payload.NewInventory(payload.TXType, hashes))
// It's high priority because it directly affects consensus process,
// even though it's getdata.
s.broadcastHPMessage(msg)
}
func (s *Server) relayInventoryCmd(cmd CommandType, t payload.InventoryType, hashes ...util.Uint256) {
payload := payload.NewInventory(t, hashes)
msg := s.MkMsg(cmd, payload)
// iteratePeersWithSendMsg sends given message to all peers using two functions
// passed, one is to send the message and the other is to filtrate peers (the
// peer is considered invalid if it returns false).
func (s *Server) iteratePeersWithSendMsg(msg *Message, send func(Peer, []byte) error, peerOK func(Peer) bool) {
pkt, err := msg.Bytes()
if err != nil {
return
}
// Get a copy of s.peers to avoid holding a lock while sending.
for peer := range s.Peers() {
if !peer.Handshaked() || !peer.Version().Relay {
if peerOK != nil && !peerOK(peer) {
continue
}
// Who cares about these messages anyway?
_ = peer.EnqueueMessage(msg)
_ = send(peer, pkt)
}
}
// broadcastMessage sends the message to all available peers.
func (s *Server) broadcastMessage(msg *Message) {
s.iteratePeersWithSendMsg(msg, Peer.EnqueuePacket, nil)
}
// broadcastHPMessage sends the high-priority message to all available peers.
func (s *Server) broadcastHPMessage(msg *Message) {
s.iteratePeersWithSendMsg(msg, Peer.EnqueueHPPacket, nil)
}
// relayBlock tells all the other connected nodes about the given block.
func (s *Server) relayBlock(b *block.Block) {
s.relayInventoryCmd(CMDInv, payload.BlockType, b.Hash())
msg := s.MkMsg(CMDInv, payload.NewInventory(payload.BlockType, []util.Uint256{b.Hash()}))
s.broadcastMessage(msg)
}
// RelayTxn a new transaction to the local node and the connected peers.
@ -716,7 +738,13 @@ func (s *Server) RelayTxn(t *transaction.Transaction) RelayReason {
return RelayOutOfMemory
}
s.relayInventoryCmd(CMDInv, payload.TXType, t.Hash())
msg := s.MkMsg(CMDInv, payload.NewInventory(payload.TXType, []util.Uint256{t.Hash()}))
// We need to filter out non-relaying nodes, so plain broadcast
// functions don't fit here.
s.iteratePeersWithSendMsg(msg, Peer.EnqueuePacket, func(p Peer) bool {
return p.Handshaked() && p.Version().Relay
})
return RelaySucceed
}