stasatdaglabs 8fdb5aa024
[NOD-1123] Implement banning (#812)
* [NOD-1123] Bubble bad-message errors up to the protocol level.

* [NOD-1123] Implement Banning.

* [NOD-1123] Properly use &stopped.

* [NOD-1123] Ban by IP rather than IP and port.

* [NOD-1123] Don't initiate connections to banned peers.

* [NOD-1123] Fix infinite loop in checkOutgoingConnections.

* [NOD-1123] Fix bannedAddresses key.

* [NOD-1123] Rename onBadMessageHandler to onInvalidMessageHandler.
2020-07-23 10:47:28 +03:00

50 lines
1.1 KiB
Go

package grpcserver
import (
"github.com/kaspanet/kaspad/netadapter/server/grpcserver/protowire"
"github.com/kaspanet/kaspad/util/panics"
"github.com/pkg/errors"
"google.golang.org/grpc/peer"
"net"
)
type p2pServer struct {
protowire.UnimplementedP2PServer
server *gRPCServer
}
func newP2PServer(s *gRPCServer) *p2pServer {
return &p2pServer{server: s}
}
func (p *p2pServer) MessageStream(stream protowire.P2P_MessageStreamServer) error {
defer panics.HandlePanic(log, "p2pServer.MessageStream", nil)
peerInfo, ok := peer.FromContext(stream.Context())
if !ok {
return errors.Errorf("Error getting stream peer info from context")
}
tcpAddress, ok := peerInfo.Addr.(*net.TCPAddr)
if !ok {
return errors.Errorf("non-tcp connections are not supported")
}
if p.server.IsBanned(tcpAddress) {
log.Debugf("received connection attempt from banned peer %s", peerInfo.Addr)
return nil
}
connection := newConnection(p.server, tcpAddress, false, stream)
err := p.server.onConnectedHandler(connection)
if err != nil {
return err
}
log.Infof("Incoming connection from %s", peerInfo.Addr)
<-connection.stopChan
return nil
}