kaspad/server/p2p/on_get_addr.go
Ori Newman 5a99e4d2f3
[NOD-806] Exit early after panic (#650)
* [NOD-806] After panic, gracefully stop logs, and then exit immediately

* [NOD-806] Convert non-kaspad applications to use the new spawn

* [NOD-806] Fix disabled log at rpcclient

* [NOD-806] Refactor HandlePanic

* [NOD-806] Cancel Logger interface

* [NOD-806] Remove redundant spawn checks from waitgroup_test.go

* [NOD-806] Use caller subsystem when logging panics

* [NOD-806] Fix go vet errors
2020-03-08 11:24:37 +02:00

42 lines
1.3 KiB
Go

package p2p
import (
"github.com/kaspanet/kaspad/config"
"github.com/kaspanet/kaspad/peer"
"github.com/kaspanet/kaspad/wire"
)
// OnGetAddr is invoked when a peer receives a getaddr kaspa message
// and is used to provide the peer with known addresses from the address
// manager.
func (sp *Peer) OnGetAddr(_ *peer.Peer, msg *wire.MsgGetAddr) {
// Don't return any addresses when running on the simulation test
// network. This helps prevent the network from becoming another
// public test network since it will not be able to learn about other
// peers that have not specifically been provided.
if config.ActiveConfig().Simnet {
return
}
// Do not accept getaddr requests from outbound peers. This reduces
// fingerprinting attacks.
if !sp.Inbound() {
peerLog.Debugf("Ignoring getaddr request from outbound peer %s", sp)
return
}
// Only allow one getaddr request per connection to discourage
// address stamping of inv announcements.
if sp.sentAddrs {
peerLog.Debugf("Ignoring repeated getaddr request from peer %s", sp)
return
}
sp.sentAddrs = true
// Get the current known addresses from the address manager.
addrCache := sp.server.addrManager.AddressCache(msg.IncludeAllSubnetworks, msg.SubnetworkID)
// Push the addresses.
sp.pushAddrMsg(addrCache, sp.SubnetworkID())
}