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<h1 class="topictitle1">Example: TI-RPC expert-level service API</h1>
<div><p>This code example illustrates an expert-level service API that
is used in developing TI-RPC services.</p>
<div class="section"><p>The expert level allows the programmer to specify Send and Receive
buffer sizes for services. Calling svc_tli_create() creates the service handle,
but it does not register or bind it with the rpcbind daemon. The programmer
must call svc_reg() before the service works properly. Similar to the intermediate
level, you have the option to use the network selection APIs to retrieve the
transport information for the service.</p>
<div class="note"><span class="notetitle">Note:</span> By using the code example,
you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
<pre>#include &lt;stdio.h&gt;
#include &lt;netconfig.h&gt;
#include &lt;rpc/rpc.h&gt;
#include &lt;errno.h&gt;
#include "myapp.h"
int main(int argc, char *argv[]) {
struct netconfig *nconf; /* pointer to nettype data */
SVCXPRT *svc; /* pointer to service handle */
bool_t rslt; /* return value for svc_reg() */
/* unregister any existing copy of this service */
/* (void)svc_unreg(program, version) */
svc_unreg(PROGNUM, VERSNUM);
/* (struct netconfig *)getnetconfigent(nettype) */
nconf = getnetconfigent(NETTYPE);
/* check for errors calling getnetconfigent() */
if (nconf == (struct netconfig *)NULL) {
/* print error messages and exit */
fprintf(stderr, "Error calling getnetconfigent(%s)\n", NETTYPE);
fprintf(stderr, "errno: %d\n", errno);
return 1;
}
/* (SVCXPRT *)svc_tli_create(filedes, netconfig, bindaddr, sendsz, recvsz) */
svc = svc_tli_create(RPC_ANYFD, nconf, NULL, 0, 0);
/* check for errors calling svc_tli_create() */
if (svc == (SVCXPRT *)NULL) {
/* print error messages and exit */
fprintf(stderr, "Error calling %s.\n", "svc_tli_create");
fprintf(stderr, "errno: %d\n", errno);
return 1;
}
/* (bool_t)svc_reg(svcxprt, prognum, versnum, dispatch, netconf) */
rslt = svc_reg(svc, PROGNUM, VERSNUM, myapp_dispatch, nconf);
/* check for errors calling svc_reg() */
if (rslt == FALSE) {
/* print error messages and exit */
fprintf(stderr, "Error calling svc_reg\n");
fprintf(stderr, "PROG: %lu\nVERS: %lu\tNET: %s\n",
PROGNUM, VERSNUM, NETTYPE);
fprintf(stderr, "errno: %d\n", errno);
return 1;
}
/* this should loop indefinitely waiting for client connections */
svc_run();
/* if we get here, svc_run() returned */
fprintf(stderr, "svc_run() returned. ERROR has occurred.\n");
fprintf(stderr, "errno: %d\n", errno);
/* clean up by unregistering. then, exit */
svc_unreg(PROGNUM, VERSNUM);
return 1;
} /* end of main() */</pre>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahpservicecode.htm" title="Transport independent remote procedure call (TI-RPC) programming provides an effective method for developing distributed client-server based applications on i5/OS.">Examples: Develop service applications based on TI-RPC code</a></div>
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