// handleAddrMsg is invoked when a peer receives an addr bitcoin message and
// is used to notify the server about advertised addresses.
func (p *peer) handleAddrMsg(msg *btcwire.MsgAddr) {
// Ignore old style addresses which don't include a timestamp.
if p.protocolVersion < btcwire.NetAddressTimeVersion {
return
}
// A message that has no addresses is invalid.
if len(msg.AddrList) == 0 {
p.logError("PEER: Command [%s] from %s does not contain any addresses",
msg.Command(), p.addr)
p.Disconnect()
return
}
for _, na := range msg.AddrList {
// Don't add more address if we're disconnecting.
if atomic.LoadInt32(&p.disconnect) != 0 {
return
}
// Set the timestamp to 5 days ago if it's more than 24 hours
// in the future so this address is one of the first to be
// removed when space is needed.
now := time.Now()
if na.Timestamp.After(now.Add(time.Minute * 10)) {
na.Timestamp = now.Add(-1 * time.Hour * 24 * 5)
}
// Add address to known addresses for this peer.
p.knownAddresses[NetAddressKey(na)] = true
}
// Add addresses to server address manager. The address manager handles
// the details of things such as preventing duplicate addresses, max
// addresses, and last seen updates.
// XXX bitcoind gives a 2 hour time penalty here, do we want to do the
// same?
p.server.addrManager.AddAddresses(msg.AddrList, p.na)
}
