freebsd man page for rtime

RTIME(3)						   BSD Library Functions Manual 						  RTIME(3)

NAME
     rtime -- get remote time

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #include <sys/time.h>
     #include <netinet/in.h>

     int
     rtime(struct sockaddr_in *addrp, struct timeval *timep, struct timeval *timeout);

DESCRIPTION
     The rtime() function consults the Internet Time Server at the address pointed to by addrp and returns the remote time in the timeval struct
     pointed to by timep.  Normally, the UDP protocol is used when consulting the Time Server.	The timeout argument specifies how long the rou-
     tine should wait before giving up when waiting for a reply.  If timeout is specified as NULL, however, the routine will instead use TCP and
     block until a reply is received from the time server.

RETURN VALUES
     The rtime() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
     the error.

SEE ALSO
     timed(8)

BSD
								 November 22, 1987							       BSD