diff --git a/main/src/main/java/sd/ExitNodeProcess.java b/main/src/main/java/sd/ExitNodeProcess.java
index b82f275..a5868e5 100644
--- a/main/src/main/java/sd/ExitNodeProcess.java
+++ b/main/src/main/java/sd/ExitNodeProcess.java
@@ -40,6 +40,7 @@ import sd.protocol.SocketConnection;
  */
 public class ExitNodeProcess {
 
+    // --- Configuration and Networking ---
     private final SimulationConfig config;
     private ServerSocket serverSocket;
     
diff --git a/main/src/main/java/sd/protocol/MessageProtocol.java b/main/src/main/java/sd/protocol/MessageProtocol.java
index 715bfc7..9a4ba27 100644
--- a/main/src/main/java/sd/protocol/MessageProtocol.java
+++ b/main/src/main/java/sd/protocol/MessageProtocol.java
@@ -2,7 +2,7 @@ package sd.protocol;
 
 import java.io.Serializable;
 
-import sd.model.MessageType; // Assuming MessageType is in sd.model or sd.protocol
+import sd.model.MessageType; 
 
 /**
  * Contrato para todas as mensagens trocadas no simulador.
diff --git a/main/src/main/java/sd/protocol/SocketConnection.java b/main/src/main/java/sd/protocol/SocketConnection.java
index 58d843e..16dcdd4 100644
--- a/main/src/main/java/sd/protocol/SocketConnection.java
+++ b/main/src/main/java/sd/protocol/SocketConnection.java
@@ -30,9 +30,30 @@ import sd.serialization.SerializerFactory;
  */
 public class SocketConnection implements Closeable {
 
+    // --- Network Resources ---
+
+    /**
+     * The underlying TCP socket used for network communication.
+     */
     private final Socket socket;
+
+    /**
+     * The raw output stream for writing bytes to the network.
+     * Wrapped by {@link DataOutputStream} during message sending.
+     */
     private final OutputStream outputStream;
+
+    /**
+     * The raw input stream for reading bytes from the network.
+     * Wrapped by {@link DataInputStream} during message reception.
+     */
     private final InputStream inputStream;
+
+    // --- Serialization ---
+
+    /**
+     * The serializer strategy used to convert objects to/from byte arrays (e.g., JSON).
+     */
     private final MessageSerializer serializer;
 
     /** Número máximo de tentativas de ligação antes de desistir (Fail-fast). */
@@ -169,7 +190,7 @@ public class SocketConnection implements Closeable {
         }
 
         try {
-            // Lê um prefixo de 4 bytes - indicador de tamanho
+           
             DataInputStream dataIn = new DataInputStream(inputStream);
             int length = dataIn.readInt();