Package net.i2p.router.tunnel.pool

Class TunnelPeerSelector

    • Constructor Detail

      • TunnelPeerSelector

        protected TunnelPeerSelector​(RouterContext context)

    • Method Detail

      • selectPeers

        public abstract List<Hash> selectPeers​(TunnelPoolSettings settings)
        Which peers should go into the next tunnel for the given settings?
        Returns:
        ordered list of Hash objects (one per peer) specifying what order they should appear in a tunnel (ENDPOINT FIRST). This includes the local router in the list. If there are no tunnels or peers to build through, and the settings reject 0 hop tunnels, this will return null.

      • getLength

        protected int getLength​(TunnelPoolSettings settings)
        Returns:
        randomized number of hops 0-7, not including ourselves

      • shouldSelectExplicit

        protected boolean shouldSelectExplicit​(TunnelPoolSettings settings)
        For debugging, also possibly for restricted routes? Needs analysis and testing
        Returns:
        usually false

      • selectExplicit

        protected List<Hash> selectExplicit​(TunnelPoolSettings settings,
                                    int length)
        For debugging, also possibly for restricted routes? Needs analysis and testing
        Returns:
        the peers

      • getExclude

        public Set<Hash> getExclude​(boolean isInbound,
                            boolean isExploratory)
        Pick peers that we want to avoid

      • isIPv6Only

        protected boolean isIPv6Only()
        Are we IPv6 only?
        Since:
        0.9.34

      • getClosestHopExclude

        protected Set<Hash> getClosestHopExclude​(boolean isInbound)
        Pick peers that we want to avoid for the first OB hop or last IB hop. There's several cases of importance:
        1. Inbound and we are hidden - Exclude all unless connected. This is taken care of in ClientPeerSelector and TunnelPeerSelector selectPeers(), not here.
        2. We are IPv6-only. Exclude all v4-only peers, unless connected This is taken care of here.
        3. We have NTCP or SSU disabled. Exclude all incompatible peers, unless connected This is taken care of here.
        4. Minimum version check, if we are some brand-new sig type, or are using some new tunnel build method. Not currently used, but this is where to implement the checks if needed. Make sure that ClientPeerSelector and TunnelPeerSelector selectPeers() call this when needed.
        Don't call this unless you need to. See ClientPeerSelector and TunnelPeerSelector selectPeers().
        Parameters:
        isInbound -
        Returns:
        null if none
        Since:
        0.9.17

      • shouldExclude

        public static boolean shouldExclude​(RouterContext ctx,
                                    RouterInfo peer)
        warning, this is also called by ProfileOrganizer.isSelectable()

      • filterSlow

        protected boolean filterSlow​(boolean isInbound,
                             boolean isExploratory)
        do we want to skip peers that are slow?
        Returns:
        true unless configured otherwise

      • orderPeers

        protected void orderPeers​(List<Hash> rv,
                          SessionKey key)
        see HashComparator

      • checkTunnel

        protected boolean checkTunnel​(boolean isInbound,
                              List<Hash> tunnel)
        Connectivity check. Check that each hop can connect to the next, including us. Check that the OBEP is not IPv6-only, and the IBGW is reachable and not hidden or IPv6-only. Tells the profile manager to blame the hop, and returns false on failure.
        Parameters:
        tunnel - ENDPOINT FIRST, GATEWAY LAST!!!!, length 2 or greater
        Returns:
        ok
        Since:
        0.9.34