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Send Announcement instead of ping in case blockchain info was not refreshed within a certain threshold. This helps to keep the global blockchain cache active, with no additional overhead. Close #78

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Kleissner
2021-12-12 01:06:55 +01:00
parent ea31af1f6e
commit 0cd4519688
5 changed files with 56 additions and 18 deletions
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20
Message Send.go
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@@ -26,6 +26,26 @@ func (peer *PeerInfo) pingConnection(connection *Connection) {
}
}
// pingConnectionAnnouncement sends an empty announcement via a particular connection.
// It has the same effect as ping, but returns the blockchain version and height of the other peer in the Response message, which may be useful for keeping the global blockchain cache up to date.
func (peer *PeerInfo) pingConnectionAnnouncement(connection *Connection) {
_, blockchainHeight, blockchainVersion := UserBlockchain.Header()
packets := protocol.EncodeAnnouncement(false, false, nil, nil, nil, FeatureSupport(), blockchainHeight, blockchainVersion, userAgent)
if len(packets) != 1 {
return
}
raw := &protocol.PacketRaw{Command: protocol.CommandAnnouncement, Payload: packets[0], Sequence: networks.Sequences.NewSequence(peer.PublicKey, &peer.messageSequence, nil).SequenceNumber}
Filters.MessageOutAnnouncement(peer.PublicKey, peer, raw, false, nil, nil, nil)
err := peer.sendConnection(raw, connection)
connection.LastPingOut = time.Now()
if (connection.Status == ConnectionActive || connection.Status == ConnectionRedundant) && IsNetworkErrorFatal(err) {
peer.invalidateActiveConnection(connection)
}
}
// Ping sends a ping. This function exists only for debugging purposes, it should not be used normally.
// This ping is not used for uptime detection and the LastPingOut time in connections is not set.
func (peer *PeerInfo) Ping() {