Send only best routes via Sync. Only apply best routes.
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eac2ab3c28
commit
eda8b00f84
@ -850,8 +850,9 @@ func (n *network) processNetChan(listener tunnel.Listener) {
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Peer: node,
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Peer: node,
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}
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}
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// get a list of all of our routes
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// get a list of the best routes for each service in our routing table
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routes, err := n.options.Router.Table().List()
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q := []router.QueryOption{router.QueryStrategy(router.AdvertiseBest)}
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routes, err := n.options.Router.Table().Query(q...)
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switch err {
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switch err {
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case nil:
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case nil:
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// encode the routes to protobuf
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// encode the routes to protobuf
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@ -1045,9 +1046,51 @@ func (n *network) processNetChan(listener tunnel.Listener) {
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// add all the routes we have received in the sync message
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// add all the routes we have received in the sync message
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for _, pbRoute := range pbNetSync.Routes {
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for _, pbRoute := range pbNetSync.Routes {
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// unmarshal the routes received from remote peer
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route := pbUtil.ProtoToRoute(pbRoute)
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route := pbUtil.ProtoToRoute(pbRoute)
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if err := n.router.Table().Create(route); err != nil && err != router.ErrDuplicateRoute {
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// lookup the best route for the given service in our routing table
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log.Debugf("Network node %s failed to add route: %v", n.id, err)
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q := []router.QueryOption{
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router.QueryService(route.Service),
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router.QueryStrategy(router.AdvertiseBest),
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}
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// NOTE: bestRoutes is either an empty slice or one element slice
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bestRoutes, err := n.options.Router.Table().Query(q...)
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if err != nil {
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log.Debugf("Network node %s failed listing best routes for %s: %v", n.id, route.Service, err)
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continue
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}
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// we found no route for given service
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// create the route we have just received
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if len(bestRoutes) == 0 {
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// add routes to the routing table
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if err := n.router.Table().Create(route); err != nil && err != router.ErrDuplicateRoute {
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log.Debugf("Network node %s failed to add route: %v", n.id, err)
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continue
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}
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}
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// Take the best route to given service and:
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// * prefer our own routes if metric is the same
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// * only add new routes if the metric is better than the metric of our best route
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bestRoute := bestRoutes[0]
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if bestRoute.Metric == route.Metric {
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if route.Router == n.options.Router.Options().Id {
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log.Debugf("Network node %s skipping route addition: already has local route", n.id)
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continue
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}
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// NOTE: we might want to skip here, too as we already have equally good route
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// add routes to the routing table
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if err := n.router.Table().Create(route); err != nil && err != router.ErrDuplicateRoute {
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log.Debugf("Network node %s failed to add route: %v", n.id, err)
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continue
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}
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}
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if bestRoute.Metric > route.Metric {
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// TODO: should we delete our best route here?
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// add route to the routing table
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if err := n.router.Table().Create(route); err != nil && err != router.ErrDuplicateRoute {
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log.Debugf("Network node %s failed to add route: %v", n.id, err)
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}
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}
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}
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}
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}
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@ -1328,8 +1371,9 @@ func (n *network) manage() {
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Peer: node,
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Peer: node,
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}
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}
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// get a list of all of our routes
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// get a list of the best routes for each service in our routing table
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routes, err := n.options.Router.Table().List()
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q := []router.QueryOption{router.QueryStrategy(router.AdvertiseBest)}
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routes, err := n.options.Router.Table().Query(q...)
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switch err {
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switch err {
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case nil:
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case nil:
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// encode the routes to protobuf
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// encode the routes to protobuf
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