Dont know if this is right, but the pkt handlers at least can be picked up now.

src/main/java/net/runelite/deob/Field.java

@@ -26,6 +26,7 @@ public class Field
 	private String name;
 	private Type type;
 	private Attributes attributes;
+	public boolean packetHandler;
 
 	Field(Fields fields, DataInputStream is) throws IOException
 	{

src/main/java/net/runelite/deob/attributes/code/instructions/If.java

@@ -86,12 +86,26 @@ public abstract class If extends Instruction implements JumpingInstruction, Comp
 		
 		ins.pop(one, two);
 		
-		Frame other = frame.dup();
+		Field f1 = getComparedField(ins);
-		other.created = this;
+		if (f1 != null && f1.getName().equals("field289"))
-		other.forking = ins;
+		{
-		other.jump(ins, to);
+			int i =5;
+		}
+//		if (f1 != null && f1.packetHandler)
+//		{
+//			assert this instanceof IfICmpNe;
+//			
+//			frame.jump(ins, to);
+//		}
+//		else
+		{
+			Frame other = frame.dup();
+			other.created = this;
+			other.forking = ins;
+			other.jump(ins, to);
 
-		ins.branch(other);
+			ins.branch(other);
+		}
 		
 		frame.addInstructionContext(ins);
 	}
@@ -112,14 +126,20 @@ public abstract class If extends Instruction implements JumpingInstruction, Comp
 	@Override
 	public void map(ParallelExecutorMapping mapping, InstructionContext ctx, InstructionContext other)
 	{
-		Frame branch1 = ctx.getBranches().get(0),
+		assert ctx.getBranches().size() == other.getBranches().size();
-			branch2 = other.getBranches().get(0);
 		
-		assert branch1.other == null;
+		// can be empty for packet handlers
-		assert branch2.other == null;
+		if (!ctx.getBranches().isEmpty())
+		{
+			Frame branch1 = ctx.getBranches().get(0),
+				branch2 = other.getBranches().get(0);
 
-		branch1.other = branch2;
+			assert branch1.other == null;
-		branch2.other = branch1;
+			assert branch2.other == null;
+
+			branch1.other = branch2;
+			branch2.other = branch1;
+		}
 		
 		this.mapArguments(mapping, ctx, other);
 	}
@@ -173,6 +193,12 @@ public abstract class If extends Instruction implements JumpingInstruction, Comp
 		assert f1.getType().equals(f2.getType());
 		
 		mapping.map(f1, f2);
+		
+		if (f1.packetHandler && f2.packetHandler)
+		{
+			mapping.packetHandler1.add(this);
+			mapping.packetHandler2.add((If) other.getInstruction());
+		}
 	}
 	
 	private Field getComparedField(InstructionContext ctx)

src/main/java/net/runelite/deob/deobfuscators/rename/ParallelExecutorMapping.java

@@ -7,6 +7,7 @@ import java.util.Map;
 import net.runelite.deob.ClassGroup;
 import net.runelite.deob.Field;
 import net.runelite.deob.Method;
+import net.runelite.deob.attributes.code.instructions.If;
 
 public class ParallelExecutorMapping
 {
@@ -15,6 +16,8 @@ public class ParallelExecutorMapping
 	//private List<Object> order = new ArrayList<>();
 	public Method m1, m2;
 	public boolean crashed;
+	public List<If> packetHandler1 = new ArrayList<>();
+	public List<If> packetHandler2 = new ArrayList<>();
 	
 	public ParallelExecutorMapping(ClassGroup group, ClassGroup group2)
 	{

src/main/java/net/runelite/deob/execution/ParallellMappingExecutor.java

@@ -29,7 +29,7 @@ public class ParallellMappingExecutor
 		++count;
 		
 
-		if (count == 65925)
+		if (count == 26)
 		{
 			int i = 5;
 		}
@@ -70,8 +70,9 @@ public class ParallellMappingExecutor
 //			assert f2.returnTo == null;
 			
 			// XXX I dont know if this is right! only helps a few fields.
-			popStack(f1);
+			// XXX if a frame exits from a jump loop it would step out which might be bad
-			popStack(f2);
+			//popStack(f1);
+			//popStack(f2);
 			
 			e.frames.remove(f1);
 			e2.frames.remove(f2);
@@ -304,9 +305,9 @@ public class ParallellMappingExecutor
 //		if (!f.getInstructions().isEmpty())
 //			return f;
 //		
-//		InstructionContext i = f.getInstructions().get(f.getInstructions().size() - 1);
+		InstructionContext i = f.getInstructions().get(f.getInstructions().size() - 1);
-//		if (!(i.getInstruction() instanceof ReturnInstruction))
+		if (!(i.getInstruction() instanceof ReturnInstruction))
-//			return f;
+			return f;
 		
 		Frame r = popStackForce(f);
 		

src/test/java/net/runelite/deob/deobfuscators/rename/MapStaticTest.java

@@ -479,7 +479,8 @@ public class MapStaticTest
 		for (Field f : exported)
 		{
 			Field other = (Field) mapping.get(f);
-			System.out.println(f + " " + other);
+			if (other == null)
+				System.out.println("missing " + f + " " + other);
 			if (other != null) ++mapped;
 			else ++not;
 		}
@@ -512,4 +513,33 @@ public class MapStaticTest
 		}
 		return list;
 	}
+	
+	@Test
+	public void testPackets() throws IOException
+	{
+		ClassGroup group1 = JarUtil.loadJar(new File(JAR1));
+		ClassGroup group2 = JarUtil.loadJar(new File(JAR2));
+		
+		group1.findClass("client").findField("field446").packetHandler = true;
+		group2.findClass("client").findField("field324").packetHandler = true;
+	
+		Method m1 = group1.findClass("client").findMethod("vmethod3096");
+		Method m2 = group2.findClass("client").findMethod("vmethod2975");
+		
+		ParallelExecutorMapping mappings = MappingExecutorUtil.map(m1, m2);
+		
+		System.out.println("BEGIN OF MAPPING");
+		for (Object o : mappings.getMap().keySet())
+		{
+			Object value = mappings.get(o);
+			System.out.println(o + " <-> " + value);
+		}
+		System.out.println("END OF MAPPINGS " + mappings.getMap().size());
+		
+		System.out.println(mappings.packetHandler1.size() + " vs " + mappings.packetHandler2.size() + " handlers");
+		
+		// I think because this is an array store
+		//Object other = mappings.get(group1.findClass("class136").findField("field2098"));
+		//Assert.assertNotNull(other);
+	}
 }