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.\" @(#)getrpcport.3r   2.2 88/08/02 4.0 RPCSRC; from 1.12 88/02/26 SMI

.\" $FreeBSD: src/lib/libc/rpc/getrpcport.3,v 1.6 1999/08/28 00:00:40 peter Exp $

.\"

.Dd October 6, 1987

.Dt GETRPCPORT 3

.Os

.Sh NAME

.Nm getrpcport

.Nd get RPC port number

.Sh SYNOPSIS

.Ft int

.Fn getrpcport "char *host" "int prognum" "int versnum" "int proto"

.Sh DESCRIPTION

.Fn getrpcport

returns the port number for version

.Fa versnum

of the RPC program

.Fa prognum

running on

.Fa host

and using protocol

.Fa proto .

It returns 0 if it cannot contact the portmapper, or if

.Fa prognum

is not registered.  If

.Fa prognum

is registered but not with version

.Fa versnum ,

it will still return a port number (for some version of the program)

indicating that the program is indeed registered.

The version mismatch will be detected upon the first call to the service.