From 79f7ea0d55c01f2980d18bd640b7e58b165ce46f Mon Sep 17 00:00:00 2001
From: Benjamin Cheng <ben@bcheng.cf>
Date: Wed, 27 May 2015 16:20:18 -0400
Subject: [PATCH] Huge changes to make multiplexing work

---
 .../proxy/TunnelChannelWrapper.java           | 47 ++++++-------------
 .../proxy/event/EventProcessor.java           |  2 +-
 2 files changed, 16 insertions(+), 33 deletions(-)

diff --git a/Common/src/tk/jackyliao123/proxy/TunnelChannelWrapper.java b/Common/src/tk/jackyliao123/proxy/TunnelChannelWrapper.java
index fb17af0..c51b81c 100644
--- a/Common/src/tk/jackyliao123/proxy/TunnelChannelWrapper.java
+++ b/Common/src/tk/jackyliao123/proxy/TunnelChannelWrapper.java
@@ -6,15 +6,15 @@
 import java.nio.channels.SocketChannel;
 import java.util.ArrayDeque;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
 
 public class TunnelChannelWrapper extends ChannelWrapper {
     private final HashMap<Integer, ArrayDeque<ByteBuffer>> dataBuffers;
-    private final ArrayDeque<Integer> ids;
 
     public TunnelChannelWrapper(SocketChannel channel, SelectionKey key) {
         super(channel, key);
         this.dataBuffers = new HashMap<Integer, ArrayDeque<ByteBuffer>>();
-        this.ids = new ArrayDeque<Integer>();
     }
 
     @Override
@@ -29,50 +29,33 @@ public void pushWriteBuffer(int connectionId, ByteBuffer data) {
             dataBuffers.put(connectionId, buffers);
         }
 
-        buffers.push(data);
-
-        if (ids.contains(connectionId)) {
-            return;
-        }
-        ids.push(connectionId);
-
-        System.out.println(ids + "!");
+        buffers.addLast(data);
 
         addInterest(SelectionKey.OP_WRITE);
-        System.out.println("Interest added");
     }
 
     @Override
     public ByteBuffer getWriteBuffer() {
-        System.out.println(ids);
-        if (ids.isEmpty()) {
-            removeInterest(SelectionKey.OP_WRITE);
-            System.out.println("get buffer null");
-            return null;
+        if(writeBuffers.isEmpty()) {
+            Iterator<Map.Entry<Integer, ArrayDeque<ByteBuffer>>> iterator = dataBuffers.entrySet().iterator();
+            while(iterator.hasNext()) {
+                Map.Entry<Integer, ArrayDeque<ByteBuffer>> entry = iterator.next();
+                ArrayDeque<ByteBuffer> clientBuffers = entry.getValue();
+                ByteBuffer buffer = clientBuffers.removeFirst();
+                if(clientBuffers.isEmpty()){
+                    iterator.remove();
+                }
+                super.pushWriteBuffer(buffer);
+            }
         }
 
-        int client = ids.pop();
-
-        ArrayDeque<ByteBuffer> clientBuffers = dataBuffers.get(client);
-        if (clientBuffers.isEmpty()) {
-            System.out.println("Empty");
-            dataBuffers.remove(client);
-            return null;
-        }
-
-        System.out.println("Push onto stack");
-        ids.push(client);
-
-        super.pushWriteBuffer(clientBuffers.pop());
-
         return super.getWriteBuffer();
     }
 
     @Override
     public ByteBuffer popWriteBuffer() throws IOException {
         ByteBuffer b = writeBuffers.removeFirst();
-        if (dataBuffers.isEmpty()) {
-            System.out.println("Nothing left, removing opwrite");
+        if (writeBuffers.isEmpty() && dataBuffers.isEmpty()) {
             removeInterest(SelectionKey.OP_WRITE);
         }
         return b;
diff --git a/Common/src/tk/jackyliao123/proxy/event/EventProcessor.java b/Common/src/tk/jackyliao123/proxy/event/EventProcessor.java
index 30ccdc3..517fe58 100644
--- a/Common/src/tk/jackyliao123/proxy/event/EventProcessor.java
+++ b/Common/src/tk/jackyliao123/proxy/event/EventProcessor.java
@@ -27,6 +27,7 @@ public Selector getSelector() {
     public void process(long timeout) throws IOException {
         selector.select(timeout);
 
+
         Iterator<SelectionKey> keys = selector.selectedKeys().iterator();
         while (keys.hasNext()) {
             SelectionKey key = keys.next();
@@ -85,7 +86,6 @@ public void process(long timeout) throws IOException {
                             }
                         }
                     }
-
                 }
 
                 if (!key.isValid()) {