// managedAcceptConnNewPeer accepts connection requests from peers >= v1.0.0.
// The requesting peer is added as a node and a peer. The peer is only added if
// a nil error is returned.
func (g *Gateway) managedAcceptConnNewPeer(conn net.Conn, remoteVersion string) error {
// Learn the peer's dialback address. Peers older than v1.0.0 will only be
// able to be discovered by newer peers via the ShareNodes RPC.
remoteAddr, err := acceptConnPortHandshake(conn)
if err != nil {
return err
}
// Attempt to add the peer to the node list. If the add is successful and
// the address is a local address, mark the peer as a local peer.
local := false
err = g.managedAddUntrustedNode(remoteAddr)
if err != nil && remoteAddr.IsLocal() {
local = true
}
g.mu.Lock()
defer g.mu.Unlock()
// Don't accept a connection from a peer we're already connected to.
if _, exists := g.peers[remoteAddr]; exists {
return fmt.Errorf("already connected to a peer on that address: %v", remoteAddr)
}
// Accept the peer.
g.acceptPeer(&peer{
Peer: modules.Peer{
Inbound: true,
Local: local,
NetAddress: remoteAddr,
Version: remoteVersion,
},
sess: muxado.Server(conn),
})
return nil
}
// managedAcceptConnOldPeer accepts a connection request from peers < v1.0.0.
// The requesting peer is added as a peer, but is not added to the node list
// (older peers do not share their dialback address). The peer is only added if
// a nil error is returned.
func (g *Gateway) managedAcceptConnOldPeer(conn net.Conn, remoteVersion string) error {
addr := modules.NetAddress(conn.RemoteAddr().String())
g.mu.Lock()
defer g.mu.Unlock()
g.acceptPeer(&peer{
Peer: modules.Peer{
NetAddress: addr,
Inbound: true,
Version: remoteVersion,
},
sess: muxado.Server(conn),
})
return nil
}
// managedAcceptConnOldPeer accepts a connection request from peers < v1.0.0.
// The requesting peer is added as a peer, but is not added to the node list
// (older peers do not share their dialback address). The peer is only added if
// a nil error is returned.
func (g *Gateway) managedAcceptConnOldPeer(conn net.Conn, remoteVersion string) error {
addr := modules.NetAddress(conn.RemoteAddr().String())
g.mu.Lock()
defer g.mu.Unlock()
// Old peers are unable to give us a dialback port, so we can't verify
// whether or not they are local peers.
g.acceptPeer(&peer{
Peer: modules.Peer{
Inbound: true,
Local: false,
NetAddress: addr,
Version: remoteVersion,
},
sess: muxado.Server(conn),
})
return nil
}
// managedAcceptConnNewPeer accepts connection requests from peers >= v1.0.0.
// The requesting peer is added as a node and a peer. The peer is only added if
// a nil error is returned.
func (g *Gateway) managedAcceptConnNewPeer(conn net.Conn, remoteVersion string) error {
// Learn the peer's dialback address. Peers older than v1.0.0 will only be
// able to be discovered by newer peers via the ShareNodes RPC.
remoteAddr, err := acceptConnPortHandshake(conn)
if err != nil {
return err
}
g.mu.Lock()
defer g.mu.Unlock()
// Don't accept a connection from a peer we're already connected to.
if _, exists := g.peers[remoteAddr]; exists {
return fmt.Errorf("already connected to a peer on that address: %v", remoteAddr)
}
err = g.addNode(remoteAddr)
if err != nil && err != errNodeExists {
return fmt.Errorf("error adding node %q: %v", remoteAddr, err)
}
err = g.save()
if err != nil {
return fmt.Errorf("error saving node list: %v", err)
}
g.acceptPeer(&peer{
Peer: modules.Peer{
NetAddress: remoteAddr,
Inbound: true,
Version: remoteVersion,
},
sess: muxado.Server(conn),
})
return nil
}
