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.\" @(#)rtime.3n        2.1 88/08/08 4.0 RPCSRC; from 1.5 88/02/08 SMI

.\" $FreeBSD: src/lib/libc/rpc/rtime.3,v 1.4 2000/03/02 09:13:48 sheldonh Exp $

.\"

.TH RTIME 3  "22 November 1987"

.SH NAME

rtime \- get remote time

.SH SYNOPSIS

.nf

.B #include 

.B #include 

.B #include 

.LP

.B int rtime(addrp, timep, timeout)

.B struct sockaddr_in \(**addrp;

.B struct timeval \(**timep;

.B struct timeval \(**timeout;

.fi

.SH DESCRIPTION

.B rtime(\|)

consults the Internet Time Server at the address pointed to by

.I addrp

and returns the remote time in the

.B timeval

struct pointed to by

.IR timep .

Normally, the

.SM UDP

protocol is used when consulting the Time Server.

The

.I timeout

parameter specifies how long the

routine should wait before giving

up when waiting for a reply.  If

.I timeout

is specified as

.SM NULL\s0,

however, the routine will instead use

.SM TCP

and block until a reply is received from the time server.

.LP

The routine returns 0 if it is successful.

Otherwise,

it returns \-1 and

.B errno

is set to reflect the cause of the error.

.SH "SEE ALSO"

.BR timed (8c)