Use a single way to generate network map (#550)

management/server/grpcserver.go

@@ -254,7 +254,6 @@ func (s *GRPCServer) registerPeer(peerKey wgtypes.Key, req *proto.LoginRequest)
 	}
 	// notify other peers of our registration
 	for _, remotePeer := range networkMap.Peers {
-		// todo update this once we have store v2 to avoid lock/peer
 		remotePeerNetworkMap, err := s.accountManager.GetNetworkMap(remotePeer.Key)
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "unable to fetch network map after registering peer, error: %v", err)
@@ -390,6 +389,9 @@ func ToResponseProto(configProto Protocol) proto.HostConfig_Protocol {
 }
 
 func toWiretrusteeConfig(config *Config, turnCredentials *TURNCredentials) *proto.WiretrusteeConfig {
+	if config == nil {
+		return nil
+	}
 	var stuns []*proto.HostConfig
 	for _, stun := range config.Stuns {
 		stuns = append(stuns, &proto.HostConfig{