diff --git a/includes/client.hpp b/includes/client.hpp
index a82ab1a..eb1dd7d 100644
--- a/includes/client.hpp
+++ b/includes/client.hpp
@@ -8,8 +8,13 @@
 class Client : public Sock {
 
 public:
-	Client() {}
+	/* Default constructor - Does nothing */
+	Client() {};
 
+	/* Destructor - defined in client.cpp */
+	~Client();
+
+	/* Normal constructor that calls the parent constructor to set the given values */
 	Client(int ip_ver, char protocol, const char* address, int port) : Sock(ip_ver, protocol, address, port) {}
 
 	void create_socket() override;
@@ -17,5 +22,8 @@ public:
 	void sendAll(std::string to_send);
 
 	std::string recvAll();
+
+	/* Return the type of socket */
+	int get_type() override;
 };
 #endif
diff --git a/includes/server.hpp b/includes/server.hpp
index b5a45a7..0c70665 100644
--- a/includes/server.hpp
+++ b/includes/server.hpp
@@ -7,6 +7,10 @@ It inherits from the 'Sock' class. */
 
 class Server : public Sock {
 
+private:
+	/* Address of the peer/client */
+	std::string peer_addr;
+
 public:
 	/* Constructors */
 	Server() {}
@@ -29,5 +33,11 @@ public:
 
 	/* Receive data from peer socket */
 	std::string recvAll();
+
+	/* Return the address of the peer */
+	std::string get_peer_addr();
+
+	/* Return the type of socket */
+	int get_type() override;
 };
 #endif
diff --git a/includes/sock.hpp b/includes/sock.hpp
index d25e656..9cd6e94 100644
--- a/includes/sock.hpp
+++ b/includes/sock.hpp
@@ -4,8 +4,13 @@
 #include <string>
 #include <sys/socket.h>
 
+/* Global constants - can be used by children classes as return values, and by any clients to check what type the socket is of */
+const int SOCK_CLIENT = 'C';
+const int SOCK_SERVER = 'S';
+
+/* Abstract class for a Socket. 'Client' and 'Server' derive from
+this class, and extend the functions defined here. */
 class Sock {
-/* Define a parent class of client and server, that can be used in main.cpp, instead of defining a client and server. This will allow me to create a struct for Mode, that can store either a client or a server, depending on what mode the game is in. */
 protected:
 	int ip_ver;
 	char protocol;
@@ -13,8 +18,10 @@ protected:
 	int sock_fd;
 	std::string address;
 	struct sockaddr* dest;
+	socklen_t addrlen;
+	int other_socket; // The peer socket (the client if this socket is a server, and the server if this socket is a client) */
 
-	void create_socket();
+	virtual void create_socket();
 
 
 public:
@@ -24,14 +31,18 @@ public:
 	/* Regular constructor - defined in sock.cpp */
 	Sock(int ip_ver, char protocol, const char* address, int port);
 
-	/* Method to send data in 'to_send' to the destination - defined in sock.cpp */
+	/* Method to send data in 'to_send' through the 'other_socket' socket */
 	void sendAll(std::string to_send);
 
-	/* Method to receive data sent to socket - defined in sock.cpp */
+	/* Method to receive data sent to the 'other_socket' socket */
 	std::string recvAll();
 
-	/* Returns socket identifier - defined in sock.cpp */
+	/* Returns socket identifier */
 	int getSockFD();
+
+	/* This is a pure virtual function (AKA an abstract function). It's purpose
+	is to be redefined by the children classes (client and server). */
+	virtual int get_type() = 0;
 };
 
 #endif