C＃使用TCP流发送数据包

Question

I'm trying to send multiple packets from a tcp server to a client using only read and write from the base "Stream" class. The problem is, I don't know what the size of the packet will be (client side). Should I send and int (4 bytes) before each packet so the client can ajust the buffer and receive only the nuber of bytes specified? I feel like there's already something in the tcp protocol that handles that but I can't seem to find it.

Answer 1

The process for what you are wanting to do is called Message Framing and there is no built in mecinism in TcpClient that does this for you. It is the responsibility of the higher level application layer to do it, be it your own code appending the length on the prefix of the message or some other library that handles message framing for you like WCF.

Here is a full example showing a length prefixed implementation like you suggested in your question.