Data transfer over sockets[TCP] how to pack multiple integer in c/c++ and transfer the data with send() recv()?

Question

I\'m making a small client/server based game, on linux in c/c++ and I need to send the player turn to the server.

Here is my problem.

I want to send two integer

Answer 1

The issue is that TCP is a continuous stream, with no concept of the start or end of a ”message” because it is not message-based.

Most times, people use a very simple ”framing protocol” whereby you always send a 4-byte header on every transfer which tells the recipient how many bytes to read, then you send that many bytes as your message.

Use htonl() to send the 4-byte header in network byte order then you will be interoperable. There is a very similar example here.