Program With Dave

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A packet is going to have a single property. We need some way to tell our packet types apart. Even though we are using polymorphism and dot net, we cannot rely on typeof(object) because we will be transferring these objects over the network and reconstructing them on the other side. The computer we are connected to is just going to see a bunch of bytes, with no type information.

So our Packet base class is going to have a built-in, read only value which identifies the type of the packet. You will see this in use later.

Step 4: Add the Packet Type Code member and property. Place this code inside our Packet class.

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        protected int _packetTypeCode = 0;
        public int PacketTypeCode { get { return _packetTypeCode; } }

_packetTypeCode is protected because the child classes who inherit from this protocol will need to be able to set the value. The public property is read-only because we don’t want our clients who use this library to monkey around with our packet data too much!

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This entry was posted on Monday, September 14th, 2009 at 9:46 pm and is filed under CSharp, Dot Net. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.