FD_SET

typedef struct fd_set {

u_int fd_count; /* how many are SET? */

SOCKET fd_array[FD_SETSIZE]; /* an array of SOCKETs */

} fd_set;

typedef struct fd_set FD_SET;

Element	Usage
fd_count	The number of sockets that are set.
fd_array	An array of the sockets in the set.

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