The client entity uses the test() function to call the Ping and Pong methods in a different sequence and/or at different times (depending on the utilized policy family).
The implementation of the test() function is contained in a test.c file. There is a separate test.c file for each policy family utilized in the example.
For more details on initialization of transport to the server, use of a proxy object and interface methods and the purpose of the ping.idl.h file, see the comments to the client.c file in the echo example.
client.c
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <assert.h>
#include <coresrv/nk/transport-kos.h>
#include <coresrv/sl/sl_api.h>
#include "ping.idl.h"
/* Implementation of the test() function is contained in the test.c file. */
void test(struct IPing *proxy);
uint32_t ping(struct IPing *proxy, uint32_t value)
{
/* Request and response structures */
struct IPing_Ping_req req;
struct IPing_Ping_res res;
req.value = value;
/*Call IPing_Ping interface method. */
if (IPing_Ping(proxy, &req, NULL, &res, NULL) == rcOk)
{
fprintf(stderr, "Client: Ping(%d), result = %d\n", (int) value, (int) res.result);
value = res.result;
}
else
fprintf(stderr, "Client: Ping(%d), failed\n", (int) value);
return value;
}
uint32_t pong(struct IPing *proxy, uint32_t value)
{
/* Request and response structures */
struct IPing_Pong_req req;
struct IPing_Pong_res res;
req.value = value;
/* Call IPing_Pong interface method. */
if (IPing_Pong(proxy, &req, NULL, &res, NULL) == rcOk)
{
fprintf(stderr, "Client: Pong(%d), result = %d\n", (int) value, (int) res.result);
value = res.result;
}
else
fprintf(stderr, "Client: Pong(%d), failed\n", (int) value);
return value;
}
int main(int argc, const char *argv[])
{
NkKosTransport transport;
struct IPing_proxy proxy;
fprintf(stderr, "Hello I'm client\n");
/* Get client IPC handle of
* "server_connection". */
Handle handle = ServiceLocatorConnect("server_connection");
assert(handle != INVALID_HANDLE);
/* Initialize transport to server. */
NkKosTransport_Init(&transport, handle, NK_NULL, 0);
/* Get ping_comp.ping_impl interface ID. */
nk_iid_t riid = ServiceLocatorGetRiid(handle, "ping_comp.ping_impl");
assert(riid != INVALID_RIID);
/* Initialize proxy object. */
IPing_proxy_init(&proxy, &transport.base, riid);
/* Call Ping and Pong methods in adifferent sequence and/or at different times (depending on utilized policy family). */
test(&proxy.base);
return EXIT_SUCCESS;
}
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