rpc_clnt_calls.3n (2010 09)

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rpc_clnt_calls(3N) rpc_clnt_calls(3N)

NAME

rpc_clnt_calls: clnt_call(), clnt_freeres(), clnt_geterr(), clnt_perrno(), clnt_perror(), clnt_sperrno(),

clnt_sperror(), rpc_broadcast(), rpc_broadcast_exp(), rpc_call() - library routines for client side calls

SYNOPSIS

#include <rpc/rpc.h>

enum clnt_stat clnt_call(CLIENT *

clnt , const rpcproc_t procnum ,

const xdrproc_t inproc , const caddr_t in

, const xdrproc_t outproc ,

caddr_t out, const struct timeval tout );

bool_t clnt_freeres(CLIENT *

clnt , const xdrproc_t

outproc , caddr_t out );

void clnt_geterr(const CLIENT *

clnt , struct rpc_err *

errp );

void clnt_perrno(const enum clnt_stat

stat );

void clnt_perror(const CLIENT *

clnt , const char *

s);

char *clnt_sperrno(const enum clnt_stat

stat );

char *clnt_sperror(const CLIENT *

clnt , const char *

s);

enum clnt_stat rpc_broadcast(const rpcprog_t

prognum,

const rpcvers_t versnum , const rpcproc_t procnum,

const xdrproc_t inproc , const caddr_t in,

const xdrproc_t outproc , caddr_t out,

const resultproc_t eachresult , const char *nettype );

enum clnt_stat rpc_broadcast_exp(const rpcprog_t

prognum,

const rpcvers_t versnum , const rpcproc_t procnum,

const xdrproc_t xargs ,

caddr_t argsp , const xdrproc_t xresults , caddr_t resultsp ,

const resultproc_t eachresult , const int inittime ,

const int waittime , const char *nettype );

enum clnt_stat rpc_call(const char *

host , const rpcprog_t prognum,

const rpcvers_t versnum , const rpcproc_t procnum, const xdrproc_t inproc ,

const char *in, const xdrproc_t outproc , char *out, const char *

nettype );

DESCRIPTION

RPC library routines allow C language programs to make procedure calls on other machines across the

network. First, the client calls a procedure to send a request to the server. Upon receipt of the request,

the server calls a dispatch routine to perform the requested service, and then sends back a reply.

The

clnt_call(), rpc_call(), and rpc_broadcast()

routines handle the client side of the pro-

cedure call. The remaining routines deal with error handling.

Some of the routines take a

CLIENT handle as one of the parameters. A CLIENT handle can be created

by an RPC creation routine such as clnt_create() (see rpc_clnt_create(3N)).

These routines are safe for use in multithreaded applications.

CLIENT

handles can be shared between

threads, however in this implementation requests by different threads are serialized (that is, the ﬁrst

request will receive its results before the second request is sent).

The HP-UX implementation of RPC only supports the X/Open Transport Interface (XTI). Applications

that are written using the Transport Layer Interface (TLI) and wish to use RPC, must convert their appli-

cation to XTI.

Routines

See rpc (3N) for the deﬁnition of the

CLIENT data structure.

enum clnt_stat clnt_call()

A function macro that calls the remote procedure procnum associated with the client handle, clnt,

which is obtained with an RPC client creation routine such as clnt_create() (see

rpc_clnt_create(3N)). The parameter inproc is the XDR function used to encode the procedure’s

parameters, and outproc is the XDR function used to decode the procedure’s results. in is the

address of the procedure’s argument(s), and out is the address of where to place the result(s). tout is

the time allowed for results to be returned, which is overridden by a time-out set explicitly through

clnt_control() (see rpc_clnt_create(3N)).

HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1

Summary of content (4 pages)

PAGE 1
rpc_clnt_calls(3N) rpc_clnt_calls(3N) NAME rpc_clnt_calls: clnt_call(), clnt_freeres(), clnt_geterr(), clnt_perrno(), clnt_perror(), clnt_sperrno(), clnt_sperror(), rpc_broadcast(), rpc_broadcast_exp(), rpc_call() - library routines for client side calls SYNOPSIS #include
PAGE 2
rpc_clnt_calls(3N) rpc_clnt_calls(3N) If the remote call succeeds, the status returned is RPC_SUCCESS. Otherwise, an appropriate status is returned. bool_t clnt_freeres() A function macro that frees any data allocated by the RPC/XDR system when it decoded the results of an RPC call. The parameter out is the address of the results, and outproc is the XDR routine describing the results. This routine returns 1 if the results were successfully freed; otherwise it returns 0.
PAGE 3
rpc_clnt_calls(3N) rpc_clnt_calls(3N) enum clnt_stat rpc_call() Calls the remote procedure associated with prognum , versnum , and procnum on the machine, host . The parameter inproc is used to encode the procedure’s parameters, and outproc is used to decode the procedure’s results. in is the address of the procedure’s argument(s), and out is the address of where to place the result(s). nettype can be any of the values listed on rpc (3N).
PAGE 4
(Notes) A (Notes) rA 4 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010