kaspad/server/p2p/on_get_addr.go
Ori Newman 9939671ccc
[NOD-1147] Implement address exchange (#795)
* [NOD-1147] Implement address exchange

* [NOD-1147] Put placeholder for source address

* [NOD-1147] Fix tests

* [NOD-1147] Add comment

* [NOD-1147] Remove needAddresses from MsgGetAddr

* [NOD-1147] Use rand.Shuffle

* [NOD-1147] Remove redundant const

* [NOD-1147] Move defer to its correct place

* [NOD-1147] Fix typo

* [NOD-1147] Use EnqueueWithTimeout for outgoingRoute

* [NOD-1147] Rename MsgGetAddr->MsgGetAddresses

* [NOD-1147] Rename MsgGetAddr->MsgGetAddresses

* [NOD-1147] Rename MsgAddr->MsgAddresses

* [NOD-1147] Rename fakeSrcAddr->fakeSourceAddress

* [NOD-1147] Remove redundant files

* [NOD-1147] CmdAddr -> CmdAddress

* [NOD-1147] Rename addr to address in protocol package
2020-07-15 17:19:46 +03:00

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.MsgGetAddresses) {
// 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())
}