Examples of org.jgroups.protocols.pbcast.NAKACK2

org.jgroups.protocols.pbcast.NAKACK2
Negative AcKnowledgement layer (NAKs). Messages are assigned a monotonically increasing sequence number (seqno). Receivers deliver messages ordered according to seqno and request retransmission of missing messages.
Retransmit requests are usually sent to the original sender of a message, but this can be changed by xmit_from_random_member (send to random member) or use_mcast_xmit_req (send to everyone). Responses can also be sent to everyone instead of the requester by setting use_mcast_xmit to true. @author Bela Ban

     */
    public static Protocol[] getTestStack(Protocol... additional_protocols) {
        Protocol[] protocols={
          new SHARED_LOOPBACK(),
          new SHARED_LOOPBACK_PING().timeout(1000),
          new NAKACK2(),
          new UNICAST3(),
          new STABLE(),
          new GMS().joinTimeout(1000),
          new FRAG2().fragSize(8000),
        };

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                                 new MERGE3(),
                                 new FD_SOCK(),
                                 new FD_ALL(),
                                 new VERIFY_SUSPECT(),
                                 new BARRIER(),
                                 new NAKACK2(),
                                 new UNICAST3(),
                                 new STABLE(),
                                 new GMS(),
                                 new UFC(),
                                 new MFC(),

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            Protocol ping = createPing();


            channels[i] = new JChannel(
                new TCP(),
                ping,
                new NAKACK2(),
                new UNICAST3(),
                new STABLE(),
                new GMS()
            );
            channels[i].setName(Character.toString((char) ('A' + i)));

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    protected JChannel createChannel(String name) throws Exception {
        return new JChannel(new SHARED_LOOPBACK(),
                            new SHARED_LOOPBACK_PING(),
                            new MERGE3().setValue("min_interval", 2000).setValue("max_interval", 5000),
                            new NAKACK2().setValue("log_discard_msgs", false),
                            new UNICAST3(),
                            new STABLE(),
                            new GMS().joinTimeout(1000).setValue("view_bundling", true).setValue("max_bundling_time", 300)
                              .setValue("print_local_addr", false),
                            new FRAG2().fragSize(8000));

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        transport.setOOBThreadPoolMaxThreads(20);
        transport.setOOBThreadPoolQueueEnabled(false);
        return new JChannel(new Protocol[]{
          transport,
          new SHARED_LOOPBACK_PING(),
          new NAKACK2(),
          new UNICAST3(),
          new GMS()
        }).name(name);
    }

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        shared_loopback.setDiagnosticsHandler(handler);


        JChannel retval=Util.createChannel(shared_loopback,
                                           new DISCARD().setValue("discard_all",true),
                                           new SHARED_LOOPBACK_PING(),
                                           new NAKACK2().setValue("use_mcast_xmit",false)
                                             .setValue("log_discard_msgs",false).setValue("log_not_found_msgs",false),
                                           new UNICAST3(),
                                           new STABLE().setValue("max_bytes",50000),
                                           new GMS().setValue("print_local_addr",false)
                                             .setValue("leave_timeout",100)

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    protected JChannel createNode(String site_name, String node_name, String cluster_name,
                                  Receiver receiver) throws Exception {
        JChannel ch=new JChannel(new SHARED_LOOPBACK(),
                                 new SHARED_LOOPBACK_PING(),
                                 new MERGE3().setValue("max_interval", 3000).setValue("min_interval", 1000),
                                 new NAKACK2(),
                                 new UNICAST3(),
                                 new GMS().setValue("print_local_addr", false),
                                 new FORWARD_TO_COORD(),
                                 createRELAY2(site_name)).name(node_name);
        if(receiver != null)

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    protected static Protocol[] createBridgeStack() {
        return new Protocol[]{
          new SHARED_LOOPBACK(),
          new SHARED_LOOPBACK_PING(),
          new MERGE3().setValue("max_interval", 3000).setValue("min_interval", 1000),
          new NAKACK2(),
          new UNICAST3(),
          new GMS().setValue("print_local_addr", false)
        };
    }

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            channels[i]=Util.createChannel(shared_loopback,
                                           new DISCARD(),
                                           new SHARED_LOOPBACK_PING(),
                                           new MERGE3().setValue("min_interval", 1000).setValue("max_interval", 3000),
                                           new NAKACK2().setValue("use_mcast_xmit",false)
                                             .setValue("discard_delivered_msgs",true)
                                             .setValue("log_discard_msgs", false).setValue("log_not_found_msgs", false),
                                           new UNICAST3().setValue("xmit_table_num_rows",5).setValue("xmit_interval", 300),
                                           new RSVP().setValue("timeout", 10000).setValue("throw_exception_on_timeout", true),
                                           new GMS().setValue("print_local_addr",false)

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    protected JChannel createChannel(String name) throws Exception {
        JChannel ch=Util.createChannel(new SHARED_LOOPBACK(),
                                       new SHARED_LOOPBACK_PING(),
                                       new FD().setValue("timeout", 1000).setValue("max_tries", 3),
                                       new NAKACK2(),
                                       new UNICAST3(),
                                       new GMS().setValue("print_local_addr",false));
        ch.setName(name);
        return ch;
    }

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