LCB

257844/src/main/java/cs451/Main.java

@@ -1,6 +1,5 @@
 package cs451;
 
-import cs451.net.event.Message;
 import cs451.net.NetManager;
 import cs451.net.event.NetEventType;
 import cs451.parser.Coordinator;
@@ -17,23 +16,21 @@ import java.util.concurrent.ConcurrentLinkedQueue;
 
 public class Main {
 
-    private static String formatOutput(Integer id, Integer host, Message.TYPE tpe){
+    private static String formatOutput(Integer id, Integer host, NetEventType tpe){
         switch (tpe){
-            case DATA:
+            case DLVR:
-                return "d "+host+" "+id+"\n";
-            case ACK:
                 return "d "+host+" "+id+"\n";
             case BCST:
                 return "b "+id+"\n";
             default:
-                return "";
+                return "? "+host+" "+id+"\n";
         }
     }
 
     private static void writeOutput(String filepath) throws IOException {
         FileWriter writer = new FileWriter(filepath);
 
-        for(Pair<Pair<Integer,Integer>, Message.TYPE> mhpt : mh_tpe){
+        for(Pair<Pair<Integer,Integer>, NetEventType> mhpt : mh_tpe){
             try {
                 writer.write(formatOutput(mhpt.first().first(),mhpt.first().second(),mhpt.second()));
             } catch (IOException e) {
@@ -65,7 +62,7 @@ public class Main {
     }
 
     private static Host me = null;
-    private static final Queue<Pair<Pair<Integer,Integer>,Message.TYPE>> mh_tpe = new ConcurrentLinkedQueue<>();
+    private static final Queue<Pair<Pair<Integer,Integer>,NetEventType>> mh_tpe = new ConcurrentLinkedQueue<>();
 
     private static Parser parser = null;
 
@@ -103,13 +100,13 @@ public class Main {
         NetManager.start(me,parser,(t,ne) -> {
             Logger.error(t+"(" + ne.message.src + "):" + ne.message.toString());
             if(t == NetEventType.DLVR){
-                Pair<Pair<Integer, Integer>, Message.TYPE> mhpt = new Pair<>(new Pair<>(ne.message.id, ne.message.src), ne.message.tpe);
+                Pair<Pair<Integer, Integer>, NetEventType> mhpt = new Pair<>(new Pair<>(ne.message.id, ne.message.src), t);
                 System.out.print(formatOutput(mhpt.first().first(),mhpt.first().second(),mhpt.second()));
                 mh_tpe.add(mhpt);
             }else if(t== NetEventType.BCST){
-                Pair<Pair<Integer, Integer>, Message.TYPE> mhpt = new Pair<>(new Pair<>(ne.message.id, ne.message.src), ne.message.tpe);
+                Pair<Pair<Integer, Integer>, NetEventType> mhpt = new Pair<>(new Pair<>(ne.message.id, ne.message.src), t);
                 System.out.print(formatOutput(mhpt.first().first(),mhpt.first().second(),mhpt.second()));
-                mh_tpe.add(new Pair<>(new Pair<>(ne.message.id,ne.message.src),ne.message.tpe));
+                mh_tpe.add(mhpt);
             }
         }, (t,ne) -> Logger.error("ERR"+t+" - "+ne.getMessage()));
 

257844/src/main/java/cs451/net/NetManager.java

@@ -8,6 +8,7 @@ import cs451.parser.Parser;
 import cs451.tools.Logger;
 
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.concurrent.*;
 import java.util.function.BiConsumer;
@@ -39,6 +40,9 @@ public abstract class NetManager {
 
     public static Integer WINDOW_WIDTH;
 
+    public static Integer BUNDLE_SIZE;
+
+    public static List<Host> hosts;
 
     private static boolean isStopped = false;
 
@@ -72,23 +76,32 @@ public abstract class NetManager {
         onErrorHandler = oeh;
 
         registerNetHandler(new NetHandlerSCKT(   NetHandlerFD.class,   NetHandlerDFLT.class));
-        registerNetHandler(new NetHandlerFD(     NetHandlerSL.class,   NetHandlerSCKT.class));
+        registerNetHandler(new NetHandlerFD(     NetHandlerBNDL.class, NetHandlerSCKT.class));
-        registerNetHandler(new NetHandlerSL(     NetHandlerPL.class,   NetHandlerFD.class));
+        registerNetHandler(new NetHandlerBNDL(   NetHandlerSL.class,   NetHandlerFD.class));
+        registerNetHandler(new NetHandlerSL(     NetHandlerPL.class,   NetHandlerBNDL.class));
         registerNetHandler(new NetHandlerPL(     NetHandlerBEB.class,  NetHandlerSL.class));
         registerNetHandler(new NetHandlerBEB(    NetHandlerURB.class,  NetHandlerPL.class));
-        registerNetHandler(new NetHandlerURB(    NetHandlerFIFO.class, NetHandlerBEB.class));
+        registerNetHandler(new NetHandlerURB(    NetHandlerLCB.class, NetHandlerBEB.class));
-        registerNetHandler(new NetHandlerFIFO(   NetHandlerTOPL.class, NetHandlerURB.class));
+        //registerNetHandler(new NetHandlerFIFO(   NetHandlerLCB.class,  NetHandlerURB.class));
-        registerNetHandler(new NetHandlerTOPL(   NetHandlerDFLT.class, NetHandlerFIFO.class));
+        registerNetHandler(new NetHandlerLCB(    NetHandlerTOPL.class, NetHandlerURB.class));
+        registerNetHandler(new NetHandlerTOPL(   NetHandlerDFLT.class, NetHandlerLCB.class));
+
         registerNetHandler(new NetHandlerDFLT(   NetHandlerDFLT.class, NetHandlerDFLT.class));
 
+        hosts = p.hosts();
         nm_listeners.values().forEach(neh -> neh.start(h,p));
         ex = new ThreadPoolExecutor(THREAD_COUNT,THREAD_COUNT+THREAD_BOOST_COUNT,30,TimeUnit.SECONDS,new LinkedBlockingQueue<>());
         ex.prestartAllCoreThreads();
 
         i_tex.scheduleAtFixedRate(()-> {
             System.err.println("NetManager DeliverIf/BroadcastIf");
-            nm_listeners.values().forEach(NetEventHandlerInterface::deliverIf);
+            nm_listeners.values().forEach(neh->{
-            nm_listeners.values().forEach(NetEventHandlerInterface::broadcastIf);
+                if(neh.condbd.getAndSet(false)){
+                    neh.deliverIf();
+                    neh.broadcastIf();
+                }
+
+            });
         }, 0, INTERNAL_WAIT, TimeUnit.MILLISECONDS);
 
         fd_tex.scheduleAtFixedRate(()-> {
@@ -116,13 +129,16 @@ public abstract class NetManager {
      * @return true if NM and NEH are done
      */
     public static boolean isDone() {
-        return isStopped || nm_listeners.values().stream().map(nmh ->{
+        return isStopped ||
+                (ex.getActiveCount()==0 &&
+                 ex.getQueue().size()==0 &&
+                 nm_listeners.values().stream().allMatch(nmh->{
                      if(!nmh.isDone()){
-                System.err.println("NetManager Waiting for: "+nmh.getClass().getSimpleName());
+                         System.out.println("Waiting for "+nmh.getClass().getSimpleName());
                         return false;
                      }
                      return true;
-        }).reduce(ex.getActiveCount()==0 && ex.getQueue().size()==0,(b1, b2) -> b1 && b2);
+                 }));
     }
 
 
@@ -212,7 +228,6 @@ public abstract class NetManager {
             }
         }
     }
-
 }
 
 

257844/src/main/java/cs451/net/event/Message.java

@@ -1,164 +0,0 @@
-package cs451.net.event;
-
-import java.nio.ByteBuffer;
-import java.util.Arrays;
-import java.util.Objects;
-
-
-/**
- * Message abstraction class
- *
- * @author C. Hölzl
- */
-public class Message implements Comparable<Message> {
-
-    /**
-     * Type of Message
-     */
-    public enum TYPE {
-        NONE("NONE", 'N'),
-        ERR("ERR", 'E'),
-        BCST("BCST", 'B'),
-        DATA("DATA", ' '),
-        ACK("ACK", 'A'),
-        HRTB("HRTB",'H');
-
-        public final Character c;
-        public final String tag;
-        TYPE(String tag, Character c){
-            this.tag = tag;
-            this.c = c;
-        }
-
-    }
-
-    public Integer src = -1;
-    public final Integer id;
-    public TYPE tpe;
-
-    /**
-     * Creates a new message from a given message
-     * @param m Message to copy
-     * @return Message
-     */
-    public static Message MSG(Message m) {
-        return new Message(m);
-    }
-
-    /**
-     * Build a Data Message
-     * @param id message id
-     * @return Message
-     */
-    public static Message DMSG(Integer id){
-        return new Message(id,TYPE.DATA);
-    }
-    public static Message DMSG(Integer id, Integer src) {
-        return new Message(id,TYPE.DATA,src);
-    }
-
-    /**
-     * Build a Heartbeat Message
-     * @return Message
-     */
-    public static Message HRTB(){
-        return new Message(0,TYPE.HRTB);
-    }
-
-    /**
-     * Build a Message of a given type
-     * @param mess_id Message ID
-     * @param tpe Message Type
-     * @return Message
-     */
-    public static Message TMSG(Integer mess_id, TYPE tpe) {
-        return new Message(mess_id, tpe);
-    }
-
-    /**
-     * @return Empty Message with no type nor ID
-     */
-    public static Message EMPTY(){
-        return new Message(-1, TYPE.NONE);
-    }
-
-
-    /**
-     * Converts a character to a given type
-     * @param c char to convert
-     * @return Type
-     */
-    private static TYPE CharacterToTpe(Character c){
-        return Arrays.stream(TYPE.values()).filter(type -> type.c==c).findFirst().orElse(TYPE.NONE);
-    }
-
-    /**
-     * Create a message from a ByteBuffer
-     * @param b buffer
-     * @return Message
-     */
-    public static Message FromBuffer(ByteBuffer b) {
-        Character tpe = b.getChar();
-        Integer id = b.getInt();
-        Integer src = b.getInt();
-        return new Message(id,CharacterToTpe(tpe),src);
-    }
-
-    /**
-     * Puts a message into a ByteBuffer
-     * @param b buffer
-     */
-    public void ToBuffer(ByteBuffer b){
-        b.putChar(tpe.c);
-        b.putInt(id);
-        b.putInt(src);
-    }
-
-    private Message(Message m) {
-        this.id = m.id;
-        this.tpe = m.tpe;
-        this.src = m.src;
-    }
-    private Message(Integer id, TYPE tpe){
-        this.id = id;
-        this.tpe = tpe;
-    }
-    private Message(Integer id, TYPE tpe, Integer src){
-        this.id = id;
-        this.tpe = tpe;
-        this.src = src;
-    }
-
-    @Override
-    public String toString() {
-        if (tpe == TYPE.DATA) {
-            return src + "-" + id;
-        }
-        return src + "-" + tpe.c + id;
-    }
-
-    @Override
-    public boolean equals(Object obj) {
-        if (this == obj) {
-            return true;
-        }
-        if (obj == null) {
-            return false;
-        }
-        if (getClass() != obj.getClass()) {
-            return false;
-        }
-        final Message m = (Message) obj;
-        return id.equals(m.id) && src.equals(m.src);
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hash(id,src);
-    }
-
-    @Override
-    public int compareTo(Message m) {
-        return id.compareTo(m.id);
-    }
-}

257844/src/main/java/cs451/net/event/NetEvent.java

@@ -1,62 +1,48 @@
 package cs451.net.event;
 
+import cs451.net.event.message.Message;
+import cs451.net.event.message.NetMessageAbstract;
 import cs451.parser.Host;
 
 /**
  * NetEvent abstraction class
  *
- * Holds a {@link cs451.net.event.Message} and a {@link cs451.parser.Host}
+ * Holds a {@link Message} and a {@link cs451.parser.Host}
  *
  * @author C. Hölzl
  */
 public class NetEvent {
 
     public final Host peer;
-    public final Message message;
+    public final NetMessageAbstract message;
 
-    private NetEvent(Host peer, Message message) {
+    private NetEvent(Host peer, NetMessageAbstract m) {
         this.peer = peer;
-        this.message = message;
+        this.message = m;
     }
 
-
+    public static NetEvent Message(NetMessageAbstract m){
-    public static NetEvent Message(Host peer, Integer mess_id){
+        return new NetEvent(NO_PEER, NetMessageAbstract.MSG(m));
-        return new NetEvent(peer, Message.DMSG(mess_id));
     }
 
-    public static NetEvent Message(Host peer, Integer mess_id, Message.TYPE tpe){
+    public static NetEvent Message(Host peer, NetMessageAbstract m){
-        return new NetEvent(peer, Message.TMSG(mess_id,tpe));
+        return new NetEvent(peer, NetMessageAbstract.MSG(m));
     }
 
-    public static NetEvent Message(Host peer, Message m){
+    public static NetEvent MessageACK(Host peer, NetMessageAbstract m) {
-        return new NetEvent(peer, Message.MSG(m));
+        return new NetEvent(peer,NetMessageAbstract.ACK(m));
-    }
-
-    public static NetEvent Message(Message m){
-        return new NetEvent(NO_PEER,Message.MSG(m));
-    }
-
-    public static NetEvent Message(Integer mess_id){
-        return new NetEvent(NO_PEER, Message.DMSG(mess_id));
-    }
-
-    public static NetEvent Message(Integer src, Integer mess_id) {
-        return new NetEvent(NO_PEER, Message.DMSG(mess_id,src));
-    }
-
-    public static NetEvent MessageACK(Host peer, Message message) {
-        NetEvent ne = NetEvent.Message(peer,message);
-        ne.message.tpe = Message.TYPE.ACK;
-        return ne;
     }
 
     public static NetEvent MessageHRTB(Host peer){
-        return NetEvent.Message(peer,Message.HRTB());
+        return new NetEvent(peer,NetMessageAbstract.HRTB());
     }
 
+    public static NetEvent MessageCRSH(Host peer){
+        return new NetEvent(peer,NetMessageAbstract.EMPTY());
+    }
 
     public static NetEvent EMPTY(){
-        return new NetEvent(NO_PEER, Message.EMPTY());
+        return new NetEvent(NO_PEER, NetMessageAbstract.EMPTY());
     }
 
     public static final Host NO_PEER = null;

257844/src/main/java/cs451/net/event/NetEventType.java

@@ -10,5 +10,5 @@ public enum NetEventType {
     DLVR,
     BCST,
     CRSH,
-    RCVR;
+    RCVR
 }

257844/src/main/java/cs451/net/event/message/Message.java

@@ -0,0 +1,112 @@
+package cs451.net.event.message;
+
+import java.nio.ByteBuffer;
+import java.util.HashMap;
+
+
+/**
+ * Message abstraction class
+ *
+ * @author C. Hölzl
+ */
+public class Message extends NetMessageAbstract {
+
+    public final HashMap<Integer,Integer> dependencies;
+
+    private Message(Integer src, Integer id, TYPE tpe, HashMap<Integer,Integer> dependencies){
+        super(src, id, tpe);
+        this.dependencies = dependencies;
+    }
+
+    /**
+     * Create a message from a ByteBuffer
+     * @param b buffer
+     * @return Message
+     */
+    public static Message FromBuffer(ByteBuffer b) {
+        if(b.remaining() < 14) return getBuilder().build();
+
+        Character tpe = b.getChar();
+        int id = b.getInt();
+        int src = b.getInt();
+        int depLen = b.getInt();
+        HashMap<Integer,Integer> newdep = new HashMap<>(depLen);
+        for (int i = 0; i < depLen; i++) {
+            if(b.remaining()<8) break;
+            newdep.put(b.getInt(),b.getInt());
+        }
+        return new Message(src, id, NetMessageInterface.CharacterToTpe(tpe), newdep);
+    }
+
+    /**
+     * Puts a message into a ByteBuffer
+     * @param b buffer
+     */
+    public void ToBuffer(ByteBuffer b){
+        if(b.remaining() < 14 + 8*dependencies.keySet().size()) return;
+
+        b.putChar(tpe.c);
+        b.putInt(id);
+        b.putInt(src);
+        b.putInt(dependencies.keySet().size());
+        for (Integer i : dependencies.keySet()) {
+            b.putInt(i);
+            b.putInt(dependencies.get(i));
+        }
+    }
+
+    @Override
+    public String toString() {
+        return src + "-" + tpe.c + id + " - " +dependencies.toString();
+    }
+
+    public static final Message HRTB_MSG = Message.getBuilder().setId(0).setTpe(TYPE.HRTB).build();
+
+    public static MessageBuilder getBuilder(){
+        return new MessageBuilder();
+    }
+    public static MessageBuilder getBuilder(NetMessageAbstract m){
+        if (m instanceof Message)
+            return new MessageBuilder((Message) m);
+        return getBuilder();
+    }
+
+    public static class MessageBuilder{
+        private int id = -1;
+        private int src = -1;
+        private TYPE tpe = TYPE.NONE;
+        private HashMap<Integer,Integer> dependencies = new HashMap<>(0);
+
+        public MessageBuilder(){}
+        public MessageBuilder(Message m){
+            this.id = m.id;
+            this.src = m.src;
+            this.tpe = m.tpe;
+            this.dependencies = m.dependencies;
+        }
+
+        public Message build(){
+            return new Message(src,id,tpe,dependencies);
+        }
+
+        public MessageBuilder setTpe(TYPE tpe) {
+            this.tpe = tpe;
+            return this;
+        }
+
+        public MessageBuilder setId(int id) {
+            this.id = id;
+            return this;
+        }
+
+        public MessageBuilder setSrc(int src) {
+            this.src = src;
+            return this;
+        }
+
+        public MessageBuilder setDependencies(HashMap<Integer,Integer> dependencies) {
+            this.dependencies = dependencies;
+            return this;
+        }
+    }
+}

257844/src/main/java/cs451/net/event/message/MessageBundle.java

@@ -0,0 +1,118 @@
+package cs451.net.event.message;
+
+import cs451.net.NetManager;
+
+import java.nio.ByteBuffer;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+
+public class MessageBundle extends NetMessageAbstract {
+
+    public final List<Message> messageList;
+
+    private MessageBundle(int src, int id, TYPE tpe, List<Message> messageList) {
+        super(src,id,tpe);
+        this.messageList = messageList;
+    }
+
+    public static NetMessageAbstract FromBuffer(ByteBuffer b) {
+        ArrayList<Message> msgl = new ArrayList<>();
+        int mlen = Math.min(NetManager.BUNDLE_SIZE+1, b.getInt());
+        for (int i = 0; i< mlen; i++) {
+            Message m = Message.FromBuffer(b);
+            if (m.tpe == TYPE.NONE)
+                break;
+            msgl.add(m);
+        }
+        return getBuilder().setMessageList(msgl).build();
+    }
+    @Override
+    public void ToBuffer(ByteBuffer b) {
+        if (b.remaining() < 4) return;
+
+        b.putInt(messageList.size());
+        for (Message message : messageList) {
+            message.ToBuffer(b);
+        }
+    }
+
+    @Override
+    public String toString() {
+        return tpe.c + "-" + Arrays.toString(messageList.toArray());
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final MessageBundle m = (MessageBundle) obj;
+        return messageList.equals(m.messageList);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(messageList);
+    }
+
+    @Override
+    public int compareTo(NetMessageAbstract message) {
+        return 0;
+    }
+
+    public static MessageBundleBuilder getBuilder(){
+        return new MessageBundleBuilder();
+    }
+    public static MessageBundleBuilder getBuilder(NetMessageAbstract m){
+        if (m instanceof  MessageBundle)
+            return new MessageBundleBuilder((MessageBundle) m);
+        return getBuilder();
+    }
+
+    public static class MessageBundleBuilder{
+        private int id = -1;
+        private int src = -1;
+        private TYPE tpe = TYPE.NONE;
+        private List<Message> messageList = new ArrayList<>(0);
+
+        public MessageBundleBuilder(){}
+        public MessageBundleBuilder(MessageBundle m){
+            this.id = m.id;
+            this.src = m.src;
+            this.tpe = m.tpe;
+            this.messageList = m.messageList;
+        }
+
+        public MessageBundle build(){
+            return new MessageBundle(src,id,tpe,messageList);
+        }
+
+        public MessageBundleBuilder setTpe(TYPE tpe) {
+            this.tpe = tpe;
+            return this;
+        }
+
+        public MessageBundleBuilder setId(int id) {
+            this.id = id;
+            return this;
+        }
+
+        public MessageBundleBuilder setSrc(int src) {
+            this.src = src;
+            return this;
+        }
+
+        public MessageBundleBuilder setMessageList(List<Message> dependencies) {
+            this.messageList = dependencies;
+            return this;
+        }
+    }
+}

257844/src/main/java/cs451/net/event/message/NetMessageAbstract.java

@@ -0,0 +1,89 @@
+package cs451.net.event.message;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Objects;
+
+public abstract class NetMessageAbstract implements NetMessageInterface {
+    public final TYPE tpe;
+    public final Integer src;
+    public final Integer id;
+
+    public NetMessageAbstract(Integer src,Integer id, TYPE tpe) {
+        this.src = src;
+        this.id = id;
+        this.tpe = tpe;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final NetMessageAbstract m = (NetMessageAbstract) obj;
+        return id.equals(m.id) && src.equals(m.src);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id,src);
+    }
+
+    @Override
+    public int compareTo(NetMessageAbstract m) {
+        return id.compareTo(m.id);
+    }
+
+
+    public static NetMessageAbstract MSG(NetMessageAbstract m) {
+        if (m instanceof  Message)
+            return Message.getBuilder(m).build();
+        if (m instanceof  MessageBundle)
+            return MessageBundle.getBuilder(m).build();
+
+        return EMPTY();
+    }
+
+    /**
+     * Build a Ack Message
+     * @return Message
+     */
+    public static NetMessageAbstract ACK(NetMessageAbstract m){
+        if(m instanceof Message)
+            return Message.getBuilder(m).setTpe(TYPE.ACK).setDependencies(new HashMap<>()).build();
+        return EMPTY();
+    }
+
+
+    /**
+     * Build a Heartbeat Message
+     * @return Message
+     */
+    public static NetMessageAbstract HRTB(){
+        return MessageBundle.getBuilder().setMessageList(List.of(Message.HRTB_MSG)).setTpe(TYPE.HRTB).build();
+    }
+
+    public boolean isHeartBeat(){
+        if (this instanceof Message){
+            return this.tpe==TYPE.HRTB;
+        }else if (this instanceof MessageBundle){
+            return ((MessageBundle)this).messageList.size()>0 &&
+                    ((MessageBundle)this).messageList.get(0).tpe==TYPE.HRTB;
+        }else{
+            return false;
+        }
+    }
+
+    /**
+     * @return Empty Message with no type nor ID
+     */
+    public static Message EMPTY(){
+        return Message.getBuilder().build();
+    }
+}

257844/src/main/java/cs451/net/event/message/NetMessageInterface.java

@@ -0,0 +1,49 @@
+package cs451.net.event.message;
+
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+public interface NetMessageInterface extends Comparable<NetMessageAbstract> {
+
+    /**
+     * Type of Message
+     */
+    enum TYPE {
+        NONE("NONE", 'N'),
+        DATA("DATA", 'D'),
+        ACK("ACK", 'A'),
+        HRTB("HRTB",'H');
+
+        public final Character c;
+        public final String tag;
+        TYPE(String tag, Character c){
+            this.tag = tag;
+            this.c = c;
+        }
+    }
+
+    /**
+     * Converts a character to a given type
+     * @param c char to convert
+     * @return Type
+     */
+    static TYPE CharacterToTpe(Character c){
+        return Arrays.stream(TYPE.values()).filter(type -> type.c==c).findFirst().orElse(TYPE.NONE);
+    }
+
+    /**
+     * Create a message from a ByteBuffer
+     *
+     * @param b buffer
+     * @return Message
+     */
+    static NetMessageAbstract FromBuffer(ByteBuffer b) {
+        return MessageBundle.FromBuffer(b);
+    }
+
+    /**
+     * Puts a message into a ByteBuffer
+     * @param b buffer
+     */
+     void ToBuffer(ByteBuffer b);
+}

257844/src/main/java/cs451/net/handler/NetEventHandlerAbstract.java

@@ -5,6 +5,8 @@ import cs451.net.event.NetEvent;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
+import java.util.concurrent.atomic.AtomicBoolean;
+
 /**
  * NetEventHandler abstraction class
  *
@@ -12,13 +14,14 @@ import cs451.parser.Parser;
  */
 public abstract class NetEventHandlerAbstract implements NetEventHandlerInterface {
 
-
     /**
      * Deliver & Broadcast Layers to handle resulting operation
      */
     private final Class<? extends NetEventHandlerAbstract> deliverLayer;
     private final Class<? extends NetEventHandlerAbstract> broadcastLayer;
 
+    public final AtomicBoolean condbd = new AtomicBoolean(false);
+
 
     /**
      * Initialized the main NetEventHandler fields
@@ -30,6 +33,12 @@ public abstract class NetEventHandlerAbstract implements NetEventHandlerInterfac
         this.broadcastLayer = broadcastLayer;
     }
 
+    /**
+     * Requests a conditional Broadcast/Delivery
+     */
+    public void requestCondBD(Boolean v){
+        condbd.set(v);
+    }
 
     /**
      * Delivers a NetEvent Synchronously

257844/src/main/java/cs451/net/handler/NetHandlerBEB.java

@@ -1,12 +1,10 @@
 package cs451.net.handler;
 
+import cs451.net.NetManager;
 import cs451.net.event.NetEvent;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
-import java.util.List;
-import java.util.stream.Collectors;
-
 /**
  * NetEventHandler for Best Effort Broadcast
  *
@@ -16,8 +14,7 @@ import java.util.stream.Collectors;
  */
 public class NetHandlerBEB extends NetEventHandlerAbstract {
 
-    private List<Host> hosts;
+    private static Host h;
-    private Host h;
 
     public NetHandlerBEB(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);
@@ -26,14 +23,13 @@ public class NetHandlerBEB extends NetEventHandlerAbstract {
     @Override
     public void broadcast(NetEvent ne) {
         deliverNextAsync(NetEvent.Message(h,ne.message));
-        hosts.parallelStream().forEach(h -> broadcastNextSync(NetEvent.Message(h, ne.message)));
+        NetManager.hosts.parallelStream().filter(ch->ch.getId()!=h.getId()).forEach(h -> broadcastNextSync(NetEvent.Message(h, ne.message)));
     }
 
     @Override
     public void start(Host h, Parser p) {
         super.start(h,p);
-        this.h = h;
+        NetHandlerBEB.h = h;
-        hosts = p.hosts().stream().filter(ch -> ch.getId()!=h.getId()).collect(Collectors.toList());
     }
 
 }

257844/src/main/java/cs451/net/handler/NetHandlerBNDL.java

@@ -0,0 +1,68 @@
+package cs451.net.handler;
+
+import cs451.net.NetManager;
+import cs451.net.event.NetEvent;
+import cs451.net.event.message.Message;
+import cs451.net.event.message.MessageBundle;
+import cs451.parser.Host;
+import cs451.parser.Parser;
+
+import java.util.ArrayList;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.PriorityBlockingQueue;
+
+/**
+ * NetEventHandler for BLUNDLER
+ *
+ * Groups Multiple messages into larger packets (and de-groups them on receive
+ *
+ * @author C. Hölzl
+ */
+public class NetHandlerBNDL extends NetEventHandlerAbstract {
+
+    private static final ConcurrentHashMap<Integer, PriorityBlockingQueue<Message>> sending = new ConcurrentHashMap<>();
+
+    public NetHandlerBNDL(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
+        super(deliverLayer, broadcastLayer);
+    }
+
+    @Override
+    public synchronized void broadcastIf() {
+        NetManager.hosts.forEach(h-> sending.computeIfPresent(h.getId(),(hid, mq)->{
+            while(mq.size()>0){
+                ArrayList<Message> msgl = new ArrayList<>(NetManager.BUNDLE_SIZE);
+                mq.drainTo(msgl, NetManager.BUNDLE_SIZE);
+                broadcastNextAsync(NetEvent.Message(h, MessageBundle.getBuilder().setMessageList(msgl).build()));
+            }
+            return mq;
+        }));
+    }
+
+    @Override
+    public void broadcast(NetEvent ne) {
+        sending.computeIfPresent(ne.peer.getId(),(h, q) -> {
+            if(ne.message instanceof Message) {
+                q.add((Message) ne.message);
+                requestCondBD(true);
+            }
+            return q;
+        });
+    }
+
+    @Override
+    public void deliver(NetEvent ne) {
+        if (ne.message instanceof MessageBundle) {
+            ((MessageBundle) ne.message).messageList.forEach(msg -> deliverNextAsync(NetEvent.Message(ne.peer,msg)));
+        }
+    }
+
+    @Override
+    public boolean isDone() {
+        return sending.values().stream().allMatch(v->v.size()==0);
+    }
+
+    @Override
+    public void start(Host h, Parser p) {
+        p.hosts().stream().filter(ch->ch.getId()!=h.getId()).forEach(ch->sending.put(ch.getId(),new PriorityBlockingQueue<>()));
+    }
+}

257844/src/main/java/cs451/net/handler/NetHandlerFD.java

@@ -1,12 +1,10 @@
 package cs451.net.handler;
 
 import cs451.net.NetManager;
-import cs451.net.event.Message;
 import cs451.net.event.NetEvent;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
-import java.util.List;
 import java.util.concurrent.ConcurrentHashMap;
 
 /**
@@ -19,8 +17,8 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public class NetHandlerFD extends NetEventHandlerAbstract {
 
-    private List<Host> hosts;
     private static final ConcurrentHashMap<Integer,Integer> alive = new ConcurrentHashMap<>();
+    private static final ConcurrentHashMap<Integer,Integer> should_I = new ConcurrentHashMap<>();
 
     public NetHandlerFD(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer, broadcastLayer);
@@ -28,20 +26,24 @@ public class NetHandlerFD extends NetEventHandlerAbstract {
 
     @Override
     public synchronized void beat() {
-        hosts.forEach(h-> {
+        NetManager.hosts.forEach(h-> {
-            alive.computeIfPresent(h.getId(),(k, v) -> {
+            should_I.computeIfPresent(h.getId(),(k, v) -> {
+                if(v>=0)
                     broadcastNextSync(NetEvent.MessageHRTB(h));
                 return v+1;
             });
+            alive.computeIfPresent(h.getId(), (k,v) -> v+1);
             if(alive.getOrDefault(h.getId(),0) > NetManager.FD_MAX_TRIES){
-                crashNextSync(NetEvent.Message(h, Message.EMPTY()));
+                crashNextSync(NetEvent.MessageCRSH(h));
                 alive.remove(h.getId());
+                should_I.remove(h.getId());
             }
         });
     }
 
     @Override
     public void broadcast(NetEvent ne) {
+        should_I.computeIfPresent(ne.peer.getId(),(k, v)->-1);
         if (alive.containsKey(ne.peer.getId())){
             broadcastNextSync(ne);
         }
@@ -50,15 +52,16 @@ public class NetHandlerFD extends NetEventHandlerAbstract {
     @Override
     public void deliver(NetEvent ne) {
         alive.computeIfPresent(ne.peer.getId(), (k,v) -> 0);
-        if (ne.message.tpe != Message.TYPE.HRTB) {
+        if (!ne.message.isHeartBeat()) {
             deliverNextSync(ne);
         }
     }
 
     @Override
     public void start(Host h, Parser p) {
-        super.start(h, p);
+        NetManager.hosts.stream().filter(ch->ch.getId()!=h.getId()).forEach(ch-> {
-        hosts = p.hosts();
+            alive.put(ch.getId(),-1);
-        hosts.stream().filter(ch->ch.getId()!=h.getId()).forEach(ch-> alive.put(ch.getId(),-1));
+            should_I.put(ch.getId(),-1);
+        });
     }
 }

257844/src/main/java/cs451/net/handler/NetHandlerFIFO.java

@@ -1,13 +1,12 @@
 package cs451.net.handler;
 
-import cs451.net.NetManager;
+import cs451.net.event.*;
-import cs451.net.event.Message;
+import cs451.net.event.message.NetMessageAbstract;
-import cs451.net.event.NetEvent;
-import cs451.net.event.NetEventType;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
-import java.util.Map;
+import java.util.ArrayList;
+import java.util.Collection;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.PriorityBlockingQueue;
 import java.util.concurrent.atomic.AtomicInteger;
@@ -24,50 +23,53 @@ import java.util.concurrent.atomic.AtomicInteger;
  */
 public class NetHandlerFIFO extends NetEventHandlerAbstract {
 
-    private final AtomicInteger sn = new AtomicInteger(1);
+    private static final ConcurrentHashMap<Integer,AtomicInteger> rsn = new ConcurrentHashMap<>();
-    private final Map<Integer,Integer> rsn = new ConcurrentHashMap<>();
+    private static final ConcurrentHashMap<Integer,PriorityBlockingQueue<NetMessageAbstract>> pending = new ConcurrentHashMap<>();
-    private final PriorityBlockingQueue<Message> pending = new PriorityBlockingQueue<>();
-
-    private Host me;
 
     public NetHandlerFIFO(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);
     }
 
-    @Override
-    public synchronized void broadcast(NetEvent ne) {
-        Integer snv = sn.getAndIncrement();
-        NetManager.complete(NetEventType.BCST, NetEvent.Message(me, snv, Message.TYPE.BCST));
-        broadcastNextAsync(NetEvent.Message(me.getId(),snv));
-    }
-
     @Override
     public synchronized void deliverIf(){
-        pending.removeIf(hmp -> {
+        pending.forEach((hid, mq) -> {
-            Integer crsn = rsn.getOrDefault(hmp.src, 1);
+            AtomicInteger crsn = rsn.get(hid);
-            if (hmp.id.equals(crsn)) {
+            if(crsn == null) return;
-                NetManager.complete(NetEventType.DLVR,NetEvent.Message(hmp));
+            Collection<NetMessageAbstract> msgc = new ArrayList<>();
-                deliverNextSync(NetEvent.Message(hmp));
+            mq.drainTo(msgc);
-                rsn.put(hmp.src, crsn + 1);
+            msgc.forEach(msg ->
-                return true;
+                crsn.getAndUpdate(v -> {
+                    if (msg.id.equals(v)){
+                        deliverNextSync(NetEvent.Message(msg));
+                        return v+1;
+                    }else{
+                        mq.add(msg);
+                        return v;
                     }
-            return false;
+                })
+            );
         });
     }
 
     @Override
     public void deliver(NetEvent ne) {
-        pending.add(ne.message);
+        pending.computeIfPresent(ne.message.src, (h, mq) -> {
+            mq.add(ne.message);
+            requestCondBD(true);
+            return mq;
+        });
     }
 
     @Override
     public boolean isDone() {
-        return pending.stream().noneMatch(hmp -> hmp.id.equals(rsn.getOrDefault(hmp.src, 1)));
+        return pending.values().stream().allMatch(hmp -> hmp.stream().noneMatch(msg-> msg.id.equals(rsn.getOrDefault(msg.src, new AtomicInteger(1)).get())));
     }
 
     @Override
     public void start(Host h, Parser p) {
-        super.start(h,p);
+        for (Host host : p.hosts()) {
-        me = h;
+            pending.put(host.getId(),new PriorityBlockingQueue<>());
+            rsn.put(host.getId(), new AtomicInteger(1));
+        }
     }
 }

257844/src/main/java/cs451/net/handler/NetHandlerLCB.java

@@ -0,0 +1,98 @@
+package cs451.net.handler;
+
+import cs451.net.event.NetEvent;
+import cs451.net.event.message.Message;
+import cs451.parser.Host;
+import cs451.parser.Parser;
+
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.PriorityBlockingQueue;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class NetHandlerLCB extends NetEventHandlerAbstract {
+
+    private static Map<Integer, List<Integer>> causality;
+    private static final ConcurrentHashMap<Integer, PriorityBlockingQueue<Message>> undelivered = new ConcurrentHashMap<>();
+    private static final ConcurrentHashMap<Integer, AtomicInteger> state = new ConcurrentHashMap<>();
+
+    public NetHandlerLCB(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
+        super(deliverLayer, broadcastLayer);
+    }
+
+    @Override
+    public synchronized void deliverIf() {
+        AtomicBoolean deliveredOne = new AtomicBoolean(false);
+        do {
+            deliveredOne.set(false);
+
+            undelivered.forEach((hid, mq) -> {
+                AtomicInteger crsn = state.get(hid);
+                if(crsn == null) return;
+                Collection<Message> msgc = new ArrayList<>();
+                mq.drainTo(msgc);
+                msgc.forEach(msg ->
+                        crsn.getAndUpdate(v -> {
+                            if (msg.id.equals(v+1) && checkDependencies(msg.src,msg.dependencies)){
+                                deliverNextSync(NetEvent.Message(msg));
+                                deliveredOne.set(true);
+                                return v+1;
+                            }else{
+                                mq.add(msg);
+                                return v;
+                            }
+                        })
+                );
+            });
+        }while((deliveredOne.get()));
+    }
+
+    @Override
+    public void broadcast(NetEvent ne) {
+        broadcastNextSync(NetEvent.Message(Message.getBuilder(ne.message).setDependencies(getDependencies(ne.message.src)).build()));
+    }
+
+    @Override
+    public void deliver(NetEvent ne) {
+        undelivered.computeIfPresent(ne.message.src,(k, lv) -> {
+            lv.add((Message) ne.message);
+            return lv;
+        });
+        requestCondBD(true);
+    }
+
+    @Override
+    public void start(Host h, Parser p) {
+        super.start(h, p);
+        causality = p.causality();
+        for (Host host : p.hosts()) {
+            undelivered.put(host.getId(), new PriorityBlockingQueue<>());
+            state.put(host.getId(), new AtomicInteger(0));
+        }
+    }
+
+    @Override
+    public boolean isDone() {
+        return undelivered.values().stream().allMatch(AbstractCollection::isEmpty);
+    }
+
+    private HashMap<Integer,Integer> getDependencies(Integer hid){
+        HashMap<Integer,Integer> dependencies = new HashMap<>();
+        List<Integer> hc = causality.getOrDefault(hid, Collections.emptyList());
+        for (Integer hci : hc) {
+            dependencies.put(hci, state.get(hci).get());
+        }
+        return dependencies;
+    }
+
+    private Boolean checkDependencies(Integer hid, HashMap<Integer,Integer> md){
+        HashMap<Integer,Integer> cd = getDependencies(hid);
+        for(Integer k : cd.keySet()){
+            if(cd.get(k) < md.get(k)){
+                return false;
+            }
+        }
+        return true;
+    }
+}

257844/src/main/java/cs451/net/handler/NetHandlerPL.java

@@ -1,6 +1,7 @@
 package cs451.net.handler;
 
 import cs451.net.event.*;
+import cs451.net.event.message.NetMessageInterface;
 import cs451.tools.Pair;
 
 import java.util.Set;
@@ -15,7 +16,7 @@ import java.util.concurrent.ConcurrentHashMap;
  */
 public class NetHandlerPL extends NetEventHandlerAbstract {
 
-    private final Set<Pair<Integer,Message>> delivered = ConcurrentHashMap.newKeySet();
+    private static final Set<Pair<Integer, NetMessageInterface>> delivered = ConcurrentHashMap.newKeySet();
 
     public NetHandlerPL(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);

257844/src/main/java/cs451/net/handler/NetHandlerSCKT.java

@@ -1,15 +1,14 @@
 package cs451.net.handler;
 
-import cs451.net.event.Message;
 import cs451.net.NetManager;
 import cs451.net.event.*;
+import cs451.net.event.message.NetMessageInterface;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
 import java.io.IOException;
 import java.net.*;
 import java.nio.ByteBuffer;
-import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -24,14 +23,10 @@ import java.util.concurrent.Executors;
  */
 public class NetHandlerSCKT extends NetEventHandlerAbstract {
 
-    private static final Integer BUFF_SIZE = 128;
+    private static final Integer BUFF_SIZE = 2048;
 
     private static final ExecutorService tex = Executors.newSingleThreadExecutor();
-
+    private static DatagramSocket socket = null;
-    private List<Host> hosts;
-
-    private DatagramSocket socket = null;
-
 
     public NetHandlerSCKT(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);
@@ -60,15 +55,15 @@ public class NetHandlerSCKT extends NetEventHandlerAbstract {
             return;
         }
 
-        byte[] buff = new byte[BUFF_SIZE];
+        byte[] b = new byte[BUFF_SIZE];
-        DatagramPacket datagram = new DatagramPacket(buff, buff.length);
+        DatagramPacket datagram = new DatagramPacket(b, b.length);
         try {
             socket.receive(datagram);
-            Optional<Integer> rhid = hosts.stream().filter(h -> h.getAddr().equals(datagram.getSocketAddress())).map(Host::getId).findFirst();
+            Optional<Integer> rhid = NetManager.hosts.stream().filter(h -> h.getAddr().equals(datagram.getSocketAddress())).map(Host::getId).findFirst();
 
             deliverNextAsync(NetEvent.Message(
                             new Host((InetSocketAddress) datagram.getSocketAddress(), rhid.orElse(-1)),
-                            Message.FromBuffer(ByteBuffer.wrap(datagram.getData()))
+                            NetMessageInterface.FromBuffer(ByteBuffer.wrap(datagram.getData()))
             ));
         } catch (IOException e) {
             NetManager.error(NetEventType.DLVR,e);
@@ -78,17 +73,13 @@ public class NetHandlerSCKT extends NetEventHandlerAbstract {
 
     @Override
     public void start(Host h, Parser p) {
-        super.start(h,p);
-        hosts = p.hosts();
-
         try {
-            this.socket = new DatagramSocket(h.getPort());
+            socket = new DatagramSocket(h.getPort());
         } catch (SocketException e) {
             throw new Error(e);
         }
-
         tex.execute(()->{
-            while (true) {
+            while (!socket.isClosed()) {
                 deliver(NetEvent.EMPTY());
             }
         });

257844/src/main/java/cs451/net/handler/NetHandlerSL.java

@@ -1,10 +1,8 @@
 package cs451.net.handler;
 
 import cs451.net.NetManager;
-import cs451.net.event.Message;
 import cs451.net.event.*;
-import cs451.parser.Host;
+import cs451.net.event.message.NetMessageAbstract;
-import cs451.parser.Parser;
 import cs451.tools.Pair;
 
 import java.util.*;
@@ -23,10 +21,9 @@ import java.util.concurrent.*;
  */
 public class NetHandlerSL extends NetEventHandlerAbstract {
 
-    private List<Host> hosts;
+    private static final Set<Integer> hasTimeout = ConcurrentHashMap.newKeySet();
-    Set<Integer> hasTimeout = ConcurrentHashMap.newKeySet();
 
-    PriorityBlockingQueue<Pair<Integer,Message>> sending = new PriorityBlockingQueue<>();
+    private static final PriorityBlockingQueue<Pair<Integer, NetMessageAbstract>> sending = new PriorityBlockingQueue<>();
 
     public NetHandlerSL(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);
@@ -35,14 +32,14 @@ public class NetHandlerSL extends NetEventHandlerAbstract {
     @Override
     public synchronized void beat(){
         sending.removeIf(ppm -> hasTimeout.contains(ppm.first()));
-        sending.stream().limit(NetManager.WINDOW_WIDTH).forEach(ppm -> hosts.stream().filter(hl->hl.getId()==(ppm.first())).findFirst()
+        sending.stream().limit(NetManager.WINDOW_WIDTH).forEach(ppm -> NetManager.hosts.stream().filter(hl->hl.getId()==(ppm.first())).findFirst()
                 .ifPresent(host -> broadcastNextSync(NetEvent.Message(host, ppm.second()))));
     }
 
     @Override
     public void broadcast(NetEvent ne) {
         if (!hasTimeout.contains(ne.peer.getId()))
-            sending.add(new Pair<>(ne.peer.getId(),Message.MSG(ne.message)));
+            sending.add(new Pair<>(ne.peer.getId(), ne.message));
         broadcastNextSync(ne);
     }
 
@@ -51,7 +48,7 @@ public class NetHandlerSL extends NetEventHandlerAbstract {
         switch (ne.message.tpe){
             case ACK:
                 sending.removeIf(ppm -> (ne.peer.getId()==ppm.first() &&
-                        ppm.second().equals(ne.message)));
+                        ne.message.equals(ppm.second())));
                 break;
             case DATA:
                 broadcastNextSync(NetEvent.MessageACK(ne.peer,ne.message));
@@ -72,10 +69,4 @@ public class NetHandlerSL extends NetEventHandlerAbstract {
     public boolean isDone() {
         return sending.isEmpty();
     }
-
-    @Override
-    public void start(Host h, Parser p) {
-        this.hosts = p.hosts();
-    }
-
 }

257844/src/main/java/cs451/net/handler/NetHandlerTOPL.java

@@ -2,10 +2,12 @@ package cs451.net.handler;
 
 import cs451.net.NetManager;
 import cs451.net.event.NetEvent;
+import cs451.net.event.NetEventType;
+import cs451.net.event.message.Message;
+import cs451.net.event.message.NetMessageInterface;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 
 /**
@@ -20,11 +22,12 @@ import java.util.concurrent.atomic.AtomicInteger;
  */
 public class NetHandlerTOPL extends NetEventHandlerAbstract {
 
-    private final AtomicInteger toSend = new AtomicInteger(0);
+    private static final AtomicInteger sn = new AtomicInteger(1);
-    private final AtomicInteger delivered = new AtomicInteger(0);
+
-    private final AtomicInteger waiting = new AtomicInteger(0);
+    private static final AtomicInteger toSend = new AtomicInteger(0);
+    private static final AtomicInteger delivered = new AtomicInteger(0);
+    private static final AtomicInteger waiting = new AtomicInteger(0);
 
-    private final AtomicBoolean status = new AtomicBoolean(false);
 
     private Host me;
 
@@ -34,25 +37,29 @@ public class NetHandlerTOPL extends NetEventHandlerAbstract {
 
     @Override
     public synchronized void broadcastIf() {
-        if( !status.get() ) return;
         while (toSend.get() > 0 && waiting.get() < NetManager.WINDOW_WIDTH) {
             toSend.decrementAndGet();
             waiting.incrementAndGet();
-            broadcastNextSync(NetEvent.EMPTY());
+
+            Message newMess = Message.getBuilder().setSrc(me.getId()).setId(sn.getAndIncrement()).setTpe(NetMessageInterface.TYPE.DATA).build();
+            NetManager.complete(NetEventType.BCST, NetEvent.Message(me, newMess));
+            broadcastNextSync(NetEvent.Message(newMess));
         }
     }
 
 
     @Override
     public void broadcast(NetEvent ne) {
-        status.set(true);
+        requestCondBD(true);
     }
 
     @Override
     public synchronized void deliver(NetEvent ne) {
+        NetManager.complete(NetEventType.DLVR,ne);
         if (ne.message.src == me.getId()) {
             delivered.incrementAndGet();
             waiting.decrementAndGet();
+            requestCondBD(true);
         }
     }
 
@@ -63,7 +70,6 @@ public class NetHandlerTOPL extends NetEventHandlerAbstract {
 
     @Override
     public void start(Host h, Parser p) {
-        super.start(h,p);
         me = h;
         toSend.set(p.messageCount());
     }

257844/src/main/java/cs451/net/handler/NetHandlerURB.java

@@ -1,6 +1,7 @@
 package cs451.net.handler;
 
 import cs451.net.event.NetEvent;
+import cs451.net.event.message.NetMessageAbstract;
 import cs451.parser.Host;
 import cs451.parser.Parser;
 import cs451.tools.Pair;
@@ -22,14 +23,10 @@ import java.util.concurrent.*;
  */
 public class NetHandlerURB extends NetEventHandlerAbstract {
 
-
+    private static final Set<Integer> correct = ConcurrentHashMap.newKeySet();
-    private final Set<Integer> correct = ConcurrentHashMap.newKeySet();
+    private static final Map<Pair<Integer,Integer>, Set<Integer>> ack = new ConcurrentHashMap<>();
-    private final Map<Pair<Integer,Integer>, Set<Integer>> ack = new ConcurrentHashMap<>();
+    private static final Set<Pair<Integer, Integer>> delivered = ConcurrentHashMap.newKeySet();
-    private final Set<Pair<Integer,Integer>> delivered = ConcurrentHashMap.newKeySet();
+    private static final Map<Pair<Integer, Integer>, NetMessageAbstract> pending = new ConcurrentHashMap<>();
-    private final Set<Pair<Integer,Integer>> pending = ConcurrentHashMap.newKeySet();
-
-    private Integer myId;
-
 
     public NetHandlerURB(Class<? extends NetEventHandlerAbstract> deliverLayer, Class<? extends NetEventHandlerAbstract> broadcastLayer) {
         super(deliverLayer,broadcastLayer);
@@ -37,15 +34,16 @@ public class NetHandlerURB extends NetEventHandlerAbstract {
 
     @Override
     public synchronized void deliverIf(){
-        pending.stream().filter(smp -> ack.getOrDefault(smp,ConcurrentHashMap.newKeySet()).containsAll(correct)).
+        pending.keySet().stream().filter(smp ->
+             ack.getOrDefault(smp,ConcurrentHashMap.newKeySet()).containsAll(correct)).
                 filter(delivered::add).
-                forEach(smp -> deliverNextAsync(NetEvent.Message(smp.first(),smp.second())));
+                forEach(smp -> deliverNextAsync(NetEvent.Message(pending.get(smp))));
     }
 
     @Override
     public void broadcast(NetEvent ne) {
-        pending.add(new Pair<>(myId, ne.message.id));
+        pending.put(new Pair<>(ne.message.src, ne.message.id),NetMessageAbstract.MSG(ne.message));
-        ne.message.src = myId;
+        requestCondBD(true);
         broadcastNextSync(ne);
     }
 
@@ -59,25 +57,25 @@ public class NetHandlerURB extends NetEventHandlerAbstract {
             v.add(ne.peer.getId());
             return v;
         });
-        if(pending.add(smp)){
+        if(pending.putIfAbsent(smp, NetMessageAbstract.MSG(ne.message))==null){
             broadcastNextAsync(ne);
         }
+        requestCondBD(true);
     }
 
     @Override
     public void crash(NetEvent ne) {
         correct.remove(ne.peer.getId());
+        requestCondBD(true);
     }
 
     @Override
     public boolean isDone() {
-        return delivered.containsAll(pending);
+        return delivered.containsAll(pending.keySet());
     }
 
     @Override
     public void start(Host h, Parser p) {
-        super.start(h,p);
         p.hosts().forEach(ch-> correct.add(ch.getId()));
-        myId = h.getId();
     }
 }

257844/src/main/java/cs451/parser/ConfigParser.java

@@ -4,12 +4,23 @@ import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class ConfigParser {
 
     private String path;
 
     private int messages;
+    private final ConcurrentHashMap<Integer,List<Integer>> causality = new ConcurrentHashMap<>();
+
+    public ConfigParser(List<Host> hosts) {
+        for (Host host : hosts) {
+            causality.put(host.getId(),new ArrayList<>());
+        }
+    }
 
 
     public boolean populate(String value) {
@@ -17,13 +28,21 @@ public class ConfigParser {
         path = file.getPath();
 
         try (BufferedReader br = new BufferedReader(new FileReader(path))) {
-            int lineNum = 1;
+            int lineNum = 0;
             for (String line; (line = br.readLine()) != null; lineNum++) {
-                switch(lineNum){
+                System.out.println(line);
-                    case 1:
+                String[] lparts = line.trim().split(" ");
-                        messages = Integer.parseInt(line);
+                if (lineNum == 0){
-                        break;
+                    messages = Integer.parseInt(lparts[0]);
-                    default:
+                }else if (lineNum>=1 && lineNum<=causality.keySet().size()){
+                    Integer hid = Integer.parseInt(lparts[0]);
+                    List<Integer> vl = causality.get(hid);
+                    if(vl != null){
+                        for(int i = 1; i < lparts.length; ++i){
+                            vl.add(Integer.parseInt(lparts[i]));
+                        }
+                    }
+                }else{
                     break;
                 }
             }
@@ -41,4 +60,8 @@ public class ConfigParser {
     public int getMessages() {
         return messages;
     }
+
+    public Map<Integer, List<Integer>> getCausality() {
+        return causality;
+    }
 }

257844/src/main/java/cs451/parser/Parser.java

@@ -1,6 +1,7 @@
 package cs451.parser;
 
 import java.util.List;
+import java.util.Map;
 
 public class Parser {
 
@@ -57,8 +58,9 @@ public class Parser {
         }
 
         if (argsNum == Constants.ARG_LIMIT_CONFIG) {
-            configParser = new ConfigParser();
+            configParser = new ConfigParser(hosts());
             if (!configParser.populate(args[Constants.CONFIG_VALUE])) {
+                help();
             }
         }
     }
@@ -108,4 +110,8 @@ public class Parser {
         return configParser.getMessages();
     }
 
+    public Map<Integer, List<Integer>> causality(){
+        return configParser.getCausality();
+    }
+
 }

257844/src/main/java/cs451/tools/ParamDetector.java

@@ -30,8 +30,8 @@ public abstract class ParamDetector {
 
         int messages = p.messageCount();
         int processCount = p.hosts().size();
-        int windowWidthMult = Math.toIntExact(Math.round(Math.pow(2.0,(4-(processCount/4.0)))));
+        int windowWidthMult = Math.toIntExact(Math.round(Math.pow(2.0,(2-(processCount/2.0)))));
-        int windowWidth = bound(coresPerProcess*windowWidthMult,4,messages);
+        int windowWidth = bound(coresPerProcess*windowWidthMult,2,messages);
 
         System.out.println("Process expected to broadcast "+messages+" messages.");
         System.out.println("Starting Process with WindowWidth of "+windowWidth+" (~ x"+windowWidthMult+").");
@@ -42,5 +42,8 @@ public abstract class ParamDetector {
         //We might want to PingPong To set Custom Timing Limitations....
         NetManager.FD_MAX_TRIES = 10;
         NetManager.FD_WAIT = 1000;
+
+        NetManager.BUNDLE_SIZE = 2;
+        NetManager.WINDOW_WIDTH *= NetManager.BUNDLE_SIZE;
     }
 }

bnr.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 
-if [ $# -eq 2 ]; then
+if [ $# -eq 3 ]; then
 	export _JAVA_OPTIONS="-Xmx16G"
 	./257844/build.sh
 	sudo echo 1
-	echo "Running with $1 processes and $2 messages"
+	echo "Running $1 with $2 processes and $3 messages"
-	yes "" | ./validate.py -r 257844/run.sh -b fifo -l 257844/bin/logs -p $1 -m $2
+	yes "" | ./validate.py -r 257844/run.sh -b $1 -l 257844/bin/logs -p $2 -m $3
 else
 	echo "Missing Arguments ..."
-	echo "Usage: $0 process_count message_count"
+	echo "Usage: $0 fifo|lcausal process_count message_count"
 fi

validate.py

@@ -201,14 +201,144 @@ class FifoBroadcastValidation(Validation):
         return True
 
 class LCausalBroadcastValidation(Validation):
-    def __init__(self, processes, outputDir, causalRelationships):
-        super().__init__(processes, outputDir)
 
     def generateConfig(self):
-        raise NotImplementedError()
+        hosts = tempfile.NamedTemporaryFile(mode='w')
+        config = tempfile.NamedTemporaryFile(mode='w')
 
-    def checkProcess(self, pid):
+        # Hosts file
-        raise NotImplementedError()
+        for i in range(1, self.processes + 1):
+            hosts.write("{} localhost {}\n".format(i, PROCESSES_BASE_IP+i))
+        hosts.flush()
+
+        self.lcausalDeps = defaultdict(list)
+
+        # # of messages
+        config.write("{}\n".format(self.messages))
+
+        # Config file; Create some random locality. Each process may have
+        # up to N processes / 2 locally dependent processes.
+        for thisproc in range(1, self.processes + 1):
+            config.write(str(thisproc) + " ")
+
+            # Add random number of dependencies
+            deps = [i for i in range(1, self.processes + 1) if i != thisproc]
+            for j in range(0, random.randint(0, int(self.processes/2))):
+                depidx = random.randint(0, len(deps) - 1)
+                otherproc = deps[depidx]
+                config.write(str(otherproc) + " ")
+                self.lcausalDeps[thisproc].append(otherproc)
+                del deps[depidx]
+            config.write("\n")
+
+        config.flush()
+
+        return (hosts, config)
+
+    def filePathForPID(self, pid):
+        return os.path.join(self.outputDirPath, 'proc{:02d}.output'.format(pid))
+
+
+    def verifyCausality(self, fromPid, broadcastSeq, toPid, fromHistory):
+        ok = True
+        filename = self.filePathForPID(toPid)
+        toPidFile = open(filename)
+        toHistory = defaultdict(lambda: 0)
+
+        for lineNumber, line in enumerate(toPidFile):
+            tokens = line.split()
+            if tokens[0] == 'd':
+                # Record most-recently received value from process. This is
+                # sufficient due to LCausal also adhering to FIFO.
+                if tokens[1] in fromHistory:
+                    toHistory[tokens[1]] = int(tokens[2])
+
+                if tokens[1] == fromPid and tokens[2] == broadcastSeq:
+                    # Found the dependent broadcast, ensure that history is consistent
+                    # up to this point
+                    for pid, seq in fromHistory.items():
+                        if toHistory[pid] < seq:
+                            print("File {}, Line {}: \n\tDelivered dependent message {}:{} with unresolved dependency\n"
+                                "\t Message was dependent on {}:{} but only delivered up to {}:{}".format(filename, lineNumber + 1,fromPid, broadcastSeq, pid,seq, pid, toHistory[pid]))
+                            ok = False
+
+        return ok
+
+
+
+    def checkLCausal(self, pid):
+        if pid not in self.lcausalDeps:
+            return True
+
+        depHistory = defaultdict(lambda: 0)
+        pidFile = open(self.filePathForPID(pid))
+
+        for line in pidFile.readlines():
+            ltokens = line.split()
+
+            # If token is broadcast, for each other process in the system,
+            # verify that that token was delivered with adherance to the
+            # causality as recorded in the @var depHistory up to this point
+            if ltokens[0] == 'b':
+                for i in range(1, self.processes+1):
+                    if i == pid:
+                        continue
+                    if not self.verifyCausality(
+                        fromPid=str(pid),
+                        broadcastSeq=ltokens[1],
+                        toPid=i,
+                        fromHistory=depHistory
+                        ):
+                        return False
+
+            # If token is deliver and is in the set of causally dependent processes,
+            # record it as being part of the dependent history up to this point.
+            if ltokens[0] == 'd' and int(ltokens[1]) in self.lcausalDeps[pid]:
+                depHistory[ltokens[1]] = int(ltokens[2])
+
+        return True
+
+
+    def checkFIFO(self, pid):
+        filePath = os.path.join(self.outputDirPath, 'proc{:02d}.output'.format(pid))
+
+        i = 1
+        nextMessage = defaultdict(lambda : 1)
+        filename = os.path.basename(filePath)
+
+        with open(filePath) as f:
+            for lineNumber, line in enumerate(f):
+                tokens = line.split()
+
+                # Check broadcast
+                if tokens[0] == 'b':
+                    msg = int(tokens[1])
+                    if msg != i:
+                        print("File {}, Line {}: Messages broadcast out of order. Expected message {} but broadcast message {}".format(filename, lineNumber, i, msg))
+                        return False
+                    i += 1
+
+                # Check delivery
+                if tokens[0] == 'd':
+                    sender = int(tokens[1])
+                    msg = int(tokens[2])
+                    if msg != nextMessage[sender]:
+                        print("File {}, Line {}: Message delivered out of order. Expected message {}, but delivered message {}".format(filename, lineNumber, nextMessage[sender], msg))
+                        return False
+                    else:
+                        nextMessage[sender] = msg + 1
+        return True
+
+
+    def checkAll(self, continueOnError=True):
+        print("LCausal verification:")
+        for pid in range(1, self.processes+1):
+            ret = self.checkFIFO(pid)
+            ret &= self.checkLCausal(pid)
+
+            if not ret and not continueOnError:
+                return False
+        return True
 
 class StressTest:
     def __init__(self, procs, concurrency, attempts, attemptsRatio):
@@ -359,7 +489,7 @@ def main(processes, messages, runscript, broadcastType, logsDir, testConfig):
     if broadcastType == "fifo":
         validation = FifoBroadcastValidation(processes, messages, logsDir)
     else:
-        validation = LCausalBroadcastValidation(processes, messages, logsDir, None)
+        validation = LCausalBroadcastValidation(processes, messages, logsDir)
 
     hostsFile, configFile = validation.generateConfig()