bind() call with AF_INET

With AF_INET, name comprises an IPv4 address and a port number. name is passed in a variable of type struct sockaddr_in (see "sockaddr_in address structure of the AF_INET address family ").

The following program extract illustrates how a name is assigned to a socket.

#include <sys/types.h>
#include <netinet/in.h>
...
struct sockaddr_in sin;
...
/* The statements which supply "sin" with an Internet
   address and a port number must be inserted here.*/ 
...
bind(s, (struct sockaddr *)&sin, sizeof sin);