Codechange: encapsulate reading the size of a Packet

src/network/core/packet.cpp

@@ -230,6 +230,18 @@ bool Packet::HasPacketSizeData() const
 	return this->pos >= sizeof(PacketSize);
 }
 
+/**
+ * Get the number of bytes in the packet.
+ * When sending a packet this is the size of the data up to that moment.
+ * When receiving a packet (before PrepareToRead) this is the allocated size for the data to be read.
+ * When reading a packet (after PrepareToRead) this is the full size of the packet.
+ * @return The packet's size.
+ */
+size_t Packet::Size() const
+{
+	return this->size;
+}
+
 /**
  * Reads the packet size from the raw packet and stores it in the packet->size
  * @return True iff the packet size seems plausible.

src/network/core/packet.h

@@ -77,6 +77,7 @@ public:
 	/* Reading/receiving of packets */
 	bool HasPacketSizeData() const;
 	bool ParsePacketSize();
+	size_t Size() const;
 	void PrepareToRead();
 
 	bool   CanReadFromPacket(size_t bytes_to_read, bool close_connection = false);

src/network/core/udp.cpp

@@ -137,7 +137,7 @@ void NetworkUDPSocketHandler::ReceivePackets()
 
 			/* If the size does not match the packet must be corrupted.
 			 * Otherwise it will be marked as corrupted later on. */
-			if (!p.ParsePacketSize() || nbytes != p.size) {
+			if (!p.ParsePacketSize() || (size_t)nbytes != p.Size()) {
 				DEBUG(net, 1, "received a packet with mismatching size from %s", address.GetAddressAsString().c_str());
 				continue;
 			}