113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* A simple asynchronous XML-RPC client written in C, as an example of
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Xmlrpc-c asynchronous RPC facilities. This is the same as the
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simpler synchronous client xmlprc_sample_add_client.c, except that
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it adds 3 different pairs of numbers with the summation RPCs going on
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simultaneously.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <xmlrpc-c/base.h>
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#include <xmlrpc-c/client.h>
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#include "config.h" /* information about this build environment */
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#define NAME "Xmlrpc-c Asynchronous Test Client"
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#define VERSION "1.0"
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static void
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die_if_fault_occurred (xmlrpc_env *env) {
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if (env->fault_occurred) {
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fprintf(stderr, "Something failed. %s (XML-RPC fault code %d)\n",
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env->fault_string, env->fault_code);
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exit(1);
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}
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}
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static void
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handle_sample_add_response(const char * const server_url,
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const char * const method_name,
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xmlrpc_value * const param_array,
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void * const user_data ATTR_UNUSED,
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xmlrpc_env * const faultP,
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xmlrpc_value * const resultP) {
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xmlrpc_env env;
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xmlrpc_int addend, adder;
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/* Initialize our error environment variable */
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xmlrpc_env_init(&env);
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/* Our first four arguments provide helpful context. Let's grab the
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addends from our parameter array.
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*/
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xmlrpc_decompose_value(&env, param_array, "(ii)", &addend, &adder);
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die_if_fault_occurred(&env);
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printf("RPC with method '%s' at URL '%s' to add %d and %d "
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"has completed\n", method_name, server_url, addend, adder);
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if (faultP->fault_occurred)
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printf("The RPC failed. %s", faultP->fault_string);
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else {
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xmlrpc_int sum;
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xmlrpc_read_int(&env, resultP, &sum);
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die_if_fault_occurred(&env);
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printf("The sum is %d\n", sum);
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}
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}
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int
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main(int const argc,
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const char ** const argv ATTR_UNUSED) {
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char * const url = "http://localhost:8080/RPC2";
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char * const methodName = "sample.add";
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xmlrpc_env env;
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xmlrpc_int adder;
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if (argc-1 > 0) {
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fprintf(stderr, "This program has no arguments\n");
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exit(1);
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}
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/* Initialize our error environment variable */
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xmlrpc_env_init(&env);
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/* Create the Xmlrpc-c client object */
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xmlrpc_client_init2(&env, XMLRPC_CLIENT_NO_FLAGS, NAME, VERSION, NULL, 0);
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die_if_fault_occurred(&env);
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for (adder = 0; adder < 3; ++adder) {
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printf("Making XMLRPC call to server url '%s' method '%s' "
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"to request the sum "
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"of 5 and %d...\n", url, methodName, adder);
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/* request the remote procedure call */
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xmlrpc_client_call_asynch(url, methodName,
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handle_sample_add_response, NULL,
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"(ii)", (xmlrpc_int32) 5, adder);
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die_if_fault_occurred(&env);
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}
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printf("RPCs all requested. Waiting for & handling responses...\n");
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/* The following is what calls handle_sample_add_response() (3 times) */
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xmlrpc_client_event_loop_finish_asynch();
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printf("All RPCs finished.\n");
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/* Destroy the Xmlrpc-c client object */
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xmlrpc_client_cleanup();
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return 0;
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}
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