diff --git a/Socket.cpp b/Socket.cpp
index c372090..a17e063 100644
--- a/Socket.cpp
+++ b/Socket.cpp
@@ -67,8 +67,6 @@ namespace core {
       if(event.events & EPOLLRDHUP) {
          readHangup = true;
          shutdown("hangup received");
-      	lock.unlock();
-         return false;
       }
 
       if(event.events & EPOLLIN) {
@@ -82,14 +80,11 @@ namespace core {
 
       if(event.events & EPOLLHUP) {
          shutdown();
-	      lock.unlock();
-	      return false;
       }
 
       lock.unlock();
 
-      reset = true;
-      return reset;
+      return !shutDown;
    }
 
    void Socket::onDataReceived(std::string data) {
@@ -172,7 +167,7 @@ namespace core {
       shutDown = true;
       reset = false;
       //      if(!needsToWrite())
-      delete this;
+//      delete this;
    }
 
 }
diff --git a/Socket.h b/Socket.h
index cdfdb81..2063089 100644
--- a/Socket.h
+++ b/Socket.h
@@ -53,7 +53,7 @@ namespace core {
       ///
       /// Use the shutdown() method to terminate the socket connection and remove resources.
       /// This method is provided to ensure that all destructors are called for all inherited
-      /// objects without a virtual destructor.
+      /// objects with a virtual destructor.
       ///
 
       void shutdown(std::string text = "unknown");
@@ -76,6 +76,9 @@ namespace core {
       /// from any user extended classes unless an epoll event is being
       /// simulated.
       ///
+      /// The return value of false will delete the socket object causing the destructors to run. 
+      /// The return value of true will enable the socket on ePoll to receive more events. 
+      ///
    
       bool eventReceived(struct epoll_event event); ///< Parse epoll event and call specified callbacks.
 
diff --git a/Subscription.cpp b/Subscription.cpp
index ba16cd3..97e09be 100644
--- a/Subscription.cpp
+++ b/Subscription.cpp
@@ -1,13 +1,19 @@
 #include "Subscription.h"
 #include "TCPSession.h"
+#include "Log.h"
+#include <algorithm>
 
 namespace core {
 
-   Subscription::Subscription(std::string id) : id(id), owner(NULL) {}
 
-   Subscription::Subscription(std::string id, TCPSession &session) : id(id), owner(&session) {}
+   Subscription::Subscription(std::string id, std::string mode) 
+   : id(id), mode(mode), owner(NULL) {}
+
+   Subscription::Subscription(std::string id, TCPSession &session, std::string mode) 
+   : id(id), mode(mode), owner(&session) {}
 
    Subscription::~Subscription() {
+      coreutils::Log(coreutils::LOG_DEBUG_3) << "Subscription destructor....";
       std::stringstream out;
       out << "cancel:" << id << std::endl;
       for(auto subscriber : subscribers) {
@@ -42,6 +48,10 @@ namespace core {
       return 1;
    }
 
+   bool Subscription::ifSubscriber(TCPSession &session) {
+      return (std::find(subscribers.begin(), subscribers.end(), &session) != subscribers.end());
+   }
+
 	int Subscription::onSubscribe(TCPSession &session) {
       return 0;
    }
diff --git a/Subscription.h b/Subscription.h
index 4b11c76..31336e3 100644
--- a/Subscription.h
+++ b/Subscription.h
@@ -12,8 +12,8 @@ namespace core {
    class Subscription {
 
    public:
-      Subscription(std::string id);
-      Subscription(std::string id, TCPSession &session);
+      Subscription(std::string id, std::string mode = "*AUTHOR");
+      Subscription(std::string id, TCPSession &session, std::string mode = "*AUTHOR");
       virtual ~Subscription();
 
       int subscribe(TCPSession &session);
@@ -24,9 +24,12 @@ namespace core {
 
       int event(std::stringstream &out);
 
+      bool ifSubscriber(TCPSession &session);
+      
       //      int processCommand(coreutils::ZString &request, TCPSession &session) override;
 
       std::string id;
+      std::string mode;
       TCPSession *owner;
 
       std::vector<TCPSession *> subscribers;
diff --git a/SubscriptionManager.cpp b/SubscriptionManager.cpp
index f315d7d..dcc754b 100644
--- a/SubscriptionManager.cpp
+++ b/SubscriptionManager.cpp
@@ -1,5 +1,6 @@
 #include "SubscriptionManager.h"
 #include "Log.h"
+#include <algorithm>
 
 namespace core {
 
@@ -13,15 +14,23 @@ namespace core {
    int SubscriptionManager::removeSessionSubscriptions(TCPSession &session) {
       int countSubscribed = 0;
       int countPublished = 0;
-      for(auto subscription = subscriptions.begin(); subscription != subscriptions.end();) {
-         countSubscribed += (*subscription).second->unsubscribe(session);
-         if((*subscription).second->owner == &session) {
-            subscription = subscriptions.erase(subscription);
-//            delete (*subscription).second;
-            ++countPublished;
-         } else
-           ++subscription;
 
+      std::string temp = "";
+      for(auto [key, subscription] : subscriptions) {
+         if(temp != "") {
+            subscriptions.erase(temp);
+            temp = "";
+         }
+         countSubscribed += subscription->unsubscribe(session);
+         if(subscription->owner == &session) {
+            temp = key;
+            delete subscription;
+            ++countPublished;
+         } 
+      }
+      if(temp != "") {
+         subscriptions.erase(temp);
+         temp = "";
       }
       coreutils::Log(coreutils::LOG_DEBUG_2) << "Removed session from " << countSubscribed << " subscription(s).";
       coreutils::Log(coreutils::LOG_DEBUG_2) << "Cancelled " << countPublished << " channel(s) for session.";
@@ -30,15 +39,13 @@ namespace core {
 
    int SubscriptionManager::processCommand(coreutils::ZString &request, TCPSession &session) {
       if(request[0].equals("publish")) {
-         Subscription *newSubscription = new Subscription(request[1].str(), session);
+         Subscription *newSubscription = new Subscription(request[1].str(), session, request[2].str());
          subscriptions.insert(std::make_pair(request[1].str(), newSubscription));
 	      return 1;
       } else if(request[0].equals("catalog")) {
       	session.out << ":catalog:";
          for(auto const& [key, subscription] : subscriptions) {
-	  	      session.out << subscription->id << "|";
-//            subscription->processCommand(request, session);
-     	      session.out << (";");
+	  	      session.out << subscription->id << ";";
          }
  	      session.out << std::endl;
       	return 1;
@@ -51,19 +58,29 @@ namespace core {
 	         subscriptions.erase(request[1].str());
          } else if(request[0].equals("subscribe")) {
    	      subscription->subscribe(session);
+            return 1;
          } else if(request[0].equals("unsubscribe")) {
 	         subscription->unsubscribe(session);
+            return 1;
          } else if(request[0].equals("event")) {
-//            coreutils::Log(coreutils::LOG_DEBUG_2) << "request: [" << request << "].";
-            if(subscription->owner == &session) {
-               std::stringstream out;
-               subscription->process(request, out);
+            std::stringstream out;
+            subscription->process(request, out);
+            if(subscription->mode == "*ANYONE") {
 	            subscription->event(out);
+               return 1;
+            } else if(subscription->mode == "*SUBSCRIBERS") {
+               if(subscription->ifSubscriber(session)) {
+	               subscription->event(out);
+                  return 1;
+               }
+            } else if(subscription->mode == "*AUTHOR") {
+               if(subscription->owner == &session) {
+	               subscription->event(out);
+                  return 1;
+               }
             }
-            else
-              return 0;
          }
-         return 1;
+         return 0;
       }
       return 0;
    }
diff --git a/TCPSession.cpp b/TCPSession.cpp
index 45bd1e0..59283c2 100644
--- a/TCPSession.cpp
+++ b/TCPSession.cpp
@@ -10,7 +10,6 @@ namespace core {
    TCPSession::~TCPSession() {
       server.removeFromSessionList(this);
       server.subscriptions.removeSessionSubscriptions(*this);
-   	coreutils::Log(coreutils::LOG_DEBUG_1) << "Terminating TCPSession level.";
    }
 
    void TCPSession::output(std::stringstream &data) {
diff --git a/Thread.cpp b/Thread.cpp
index 4464439..56b463b 100644
--- a/Thread.cpp
+++ b/Thread.cpp
@@ -4,6 +4,7 @@
 namespace core {
 
    Thread::Thread(EPoll &ePoll) : ePoll(ePoll) {}
+   Thread::Thread(EPoll &ePoll, ThreadScope *scope) : ePoll(ePoll) {}
 
    Thread::~Thread() {}
 
@@ -45,25 +46,28 @@ namespace core {
 
       while(1) {
 
-	 if(ePoll.isStopping())
+	      if(ePoll.isStopping())
            break;
 
-	 status = "WAITING";
-	 int rc = epoll_wait(ePoll.getDescriptor(), events, 50, -1);
-	 status = "RUNNING";
+	      status = "WAITING";
+	      int rc = epoll_wait(ePoll.getDescriptor(), events, 50, -1);
+	      status = "RUNNING";
 
-	 if(rc < 0) {
-	    // TODO: Make log entry indicating status received and ignore for now.
-	 } else if(rc == 0) {
-	    break;
-	 } else if(rc > 0) {
-	    for(int ix = 0; ix < rc; ++ix) {
-	       ++count;
-	       if(((Socket *)events[ix].data.ptr)->eventReceived(events[ix]))
-		      ePoll.resetSocket((Socket *)events[ix].data.ptr);
-	      }
-	   }
-   }
+	      if(rc < 0) {
+	      // TODO: Make log entry indicating status received and ignore for now.
+	      } else if(rc == 0) {
+	         break;
+	      } else if(rc > 0) {
+	         for(int ix = 0; ix < rc; ++ix) {
+	            ++count;
+	            if(((Socket *)events[ix].data.ptr)->eventReceived(events[ix])) {
+		            ePoll.resetSocket((Socket *)events[ix].data.ptr);
+	            } else { 
+                  delete (Socket *)events[ix].data.ptr;
+               }
+            }
+   	   }
+      }
       coreutils::Log(coreutils::LOG_DEBUG_1) << "Thread ending with thread id " << threadId << ".";
    }
    
diff --git a/Thread.h b/Thread.h
index 8c52613..023123a 100644
--- a/Thread.h
+++ b/Thread.h
@@ -5,6 +5,7 @@
 #include "Log.h"
 #include "Object.h"
 #include "TCPSession.h"
+#include "ThreadScope.h"
 
 namespace core {
 
@@ -22,6 +23,7 @@ namespace core {
       
     public: 
       Thread(EPoll &ePoll);
+      Thread(EPoll &ePoll, ThreadScope *thread);
       ~Thread();
       
       ///
@@ -43,6 +45,7 @@ namespace core {
       void print_thread_start_log();
       pid_t threadId;
       void run();    
+      ThreadScope *thread;
       
    };
    
diff --git a/ThreadScope.h b/ThreadScope.h
new file mode 100644
index 0000000..48ca912
--- /dev/null
+++ b/ThreadScope.h
@@ -0,0 +1,15 @@
+#ifndef __ThreadScope_h__
+#define __ThreadScope_h__
+
+namespace core {
+
+   class ThreadScope {
+
+    public:
+      ThreadScope() {}
+
+   };
+
+}
+
+#endif