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Command: rtime | Section: 3 | Source: Digital UNIX | File: rtime.3.gz
rtime(3) Library Functions Manual rtime(3)
NAME
rtime - get remote time
SYNOPSIS
#include <sys/types.h>
#include <sys/time.h>
#include <netinet/in.h>
int rtime(addrp, timep, timeout)
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 consult-
ing the Time Server. The timeout parameter 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.
The routine returns 0 if it is successful. Otherwise, it returns -1 and
errno is set to reflect the cause of the error.
RELATED INFORMATION
timed(8), timedc(8) delim off
rtime(3)