diff --git a/src/protocolP2P/Payload.java b/src/protocolP2P/Payload.java
index 990df6b..5f2a3a2 100644
--- a/src/protocolP2P/Payload.java
+++ b/src/protocolP2P/Payload.java
@@ -9,6 +9,9 @@ import protocolP2P.DiscoverRequest;
 import protocolP2P.DiscoverResponse;
 import protocolP2P.Register;
 import protocolP2P.Unregister;
+import protocolP2P.RatioRequest;
+import protocolP2P.RatioResponse;
+import protocolP2P.UpdateRatio;
 import localException.ProtocolError;
 import localException.InternalError;
 import localException.TransmissionError;
@@ -40,6 +43,9 @@ public class Payload {
 		assert requestResponseCode != RequestResponseCode.DISCOVER_RESPONSE || (this instanceof DiscoverResponse) : "DISCOVER_RESPONSE must use DiscoverResponse class";
 		assert requestResponseCode != RequestResponseCode.REGISTER          || (this instanceof Register) : "REGISTER must use Register class";
 		assert requestResponseCode != RequestResponseCode.UNREGISTER        || (this instanceof Unregister) : "UNREGISTER must use Unregister class";
+		assert requestResponseCode != RequestResponseCode.RATIO_REQUEST     || (this instanceof RatioRequest) : "RATIO_REQUEST must use RatioRequest class";
+		assert requestResponseCode != RequestResponseCode.RATIO_RESPONSE    || (this instanceof RatioResponse) : "RATIO_RESPONSE must use RatioResponse class";
+		assert requestResponseCode != RequestResponseCode.UPDATE_RATIO      || (this instanceof UpdateRatio) : "UPDATE_RATIO must use UpdateRatio class";
 		this.requestResponseCode = requestResponseCode;
 		checkRequestResponseCode(); // this can throw InternalError
 	}
@@ -67,6 +73,9 @@ public class Payload {
 		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.DISCOVER_RESPONSE || (this instanceof DiscoverResponse) : "DISCOVER_RESPONSE must use DiscoverResponse class";
 		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.REGISTER          || (this instanceof Register) : "REGISTER must use Register class";
 		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.UNREGISTER        || (this instanceof Unregister) : "UNREGISTER must use Unregister class";
+		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.RATIO_REQUEST     || (this instanceof RatioRequest) : "RATIO_REQUEST must use RatioRequest class";
+		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.RATIO_RESPONSE    || (this instanceof RatioResponse) : "RATIO_RESPONSE must use RatioResponse class";
+		assert RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]) != RequestResponseCode.UPDATE_RATIO      || (this instanceof UpdateRatio) : "UPDATE_RATIO must use UpdateRatio class";
 		requestResponseCode = RequestResponseCode.fromCode(packet[RequestResponseCode.RRCODE_POSITION]);
 		checkRequestResponseCode(); // this can throw InternalError
 	}
@@ -85,6 +94,9 @@ public class Payload {
 		 || (requestResponseCode == RequestResponseCode.DISCOVER_RESPONSE && !(this instanceof DiscoverResponse))
 		 || (requestResponseCode == RequestResponseCode.REGISTER          && !(this instanceof Register))
 		 || (requestResponseCode == RequestResponseCode.UNREGISTER        && !(this instanceof Unregister))
+		 || (requestResponseCode == RequestResponseCode.RATIO_REQUEST     && !(this instanceof RatioRequest))
+		 || (requestResponseCode == RequestResponseCode.RATIO_RESPONSE    && !(this instanceof RatioResponse))
+		 || (requestResponseCode == RequestResponseCode.UPDATE_RATIO      && !(this instanceof UpdateRatio))
 		) {
 			throw new InternalError();
 		}
diff --git a/src/protocolP2P/ProtocolP2PPacketTCP.java b/src/protocolP2P/ProtocolP2PPacketTCP.java
index 708ee38..4eb2bfd 100644
--- a/src/protocolP2P/ProtocolP2PPacketTCP.java
+++ b/src/protocolP2P/ProtocolP2PPacketTCP.java
@@ -18,6 +18,9 @@ import protocolP2P.RequestResponseCode;
 import protocolP2P.LoadRequest;
 import protocolP2P.FileList;
 import protocolP2P.FilePart;
+import protocolP2P.RatioRequest;
+import protocolP2P.RatioResponse;
+import protocolP2P.UpdateRatio;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.Socket;
@@ -141,6 +144,7 @@ public class ProtocolP2PPacketTCP < T extends Payload > extends ProtocolP2PPacke
 				case HASH_RESPONSE:
 				case DISCOVER_RESPONSE:
 				case NOT_A_TRACKER:
+				case RATIO_RESPONSE:
 					// we were expecting a request, but we are receiving a response
 					throw new ProtocolError();
 				default :
@@ -319,6 +323,15 @@ public class ProtocolP2PPacketTCP < T extends Payload > extends ProtocolP2PPacke
 			case DISCOVER_RESPONSE:
 				payload = (Payload) new DiscoverResponse(packet);
 				break;
+			case RATIO_REQUEST:
+				payload = (Payload) new RatioRequest(packet);
+				break;
+			case RATIO_RESPONSE:
+				payload = (Payload) new RatioResponse(packet);
+				break;
+			case UPDATE_RATIO:
+				payload = (Payload) new UpdateRatio(packet);
+				break;
 			default:
 				payload = new Payload(packet); // this can throw TransmissionError
 				break;
diff --git a/src/protocolP2P/ProtocolP2PPacketUDP.java b/src/protocolP2P/ProtocolP2PPacketUDP.java
index a54733b..e7fbbc5 100644
--- a/src/protocolP2P/ProtocolP2PPacketUDP.java
+++ b/src/protocolP2P/ProtocolP2PPacketUDP.java
@@ -19,6 +19,9 @@ import protocolP2P.RequestResponseCode;
 import protocolP2P.LoadRequest;
 import protocolP2P.FileList;
 import protocolP2P.FilePart;
+import protocolP2P.RatioRequest;
+import protocolP2P.RatioResponse;
+import protocolP2P.UpdateRatio;
 import java.net.DatagramPacket;
 import java.net.DatagramSocket;
 import java.net.SocketAddress;
@@ -134,6 +137,7 @@ public class ProtocolP2PPacketUDP < T extends Payload> extends ProtocolP2PPacket
 				case HASH_RESPONSE:
 				case DISCOVER_RESPONSE:
 				case NOT_A_TRACKER:
+				case RATIO_RESPONSE:
 					// we were expecting a request, but we are receiving a response
 					throw new ProtocolError();
 				default :
@@ -304,6 +308,15 @@ public class ProtocolP2PPacketUDP < T extends Payload> extends ProtocolP2PPacket
 			case DISCOVER_RESPONSE:
 				payload = (Payload) new DiscoverResponse(packet);
 				break;
+			case RATIO_REQUEST:
+				payload = (Payload) new RatioRequest(packet);
+				break;
+			case RATIO_RESPONSE:
+				payload = (Payload) new RatioResponse(packet);
+				break;
+			case UPDATE_RATIO:
+				payload = (Payload) new UpdateRatio(packet);
+				break;
 			default:
 				payload = new Payload(packet); // this can throw TransmissionError
 				break;