C++ Sockets

Introduction#

This topic will be about modern C++ style Berkeley Socket Programming (This is code for Linux, but easily portable to other platforms)

Sample server code

constexpr const size_t addressSize = sizeof(sockaddr_in);
constexpr const uint16_t defaultPort = 80; // The port you want to use

int serverSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
sockaddr_in serverAddress, clientAddress;

memset(&serverAddress, 0, addressSize);
serverAddress.sin_family = AF_INET;
serverAddress.sin_addr.s_addr = htonl(INADDR_ANY);
serverAddress.sin_port = htons(defaultPort);

bind(serverSocket, (sockaddr*)&serverAddress, addressSize);
listen(serverSocket, SOMAXCONN);

while (true) { // Infinite running app
    std::thread{ // Create new thread for every client
        handleConnection, //Connection handler
        accept(serverSocket, (sockaddr*)&clientAddress, &addressSize) //Client socket
        // Any other parameters for the handler here
    }.detach(); // Detached thread to make resource management easier
}
return 0;