C++ :: Handling Multiple Connections?

following code because i want to handle multiple connection and want to implement in my project

Code:
int newsockfd, pid;
socklen_t clilen;
struct sockaddr_in cli_addr;

[Code]...

My Questions

1. What these lines is doing

Code:
newsockfd = accept(m_sockfd, (struct sockaddr*) &cli_addr, &clilen);

Code:
close(m_sockfd);

Code:
close(newsockfd);

2. And why there is no create(), connect(), read(), write() methods for client