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clientSynchronous.c
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clientSynchronous.c
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#include <mdp.h>
// raspberry endpoint : "tcp://192.168.0.113:5000"
//localhost : "tcp://127.0.0.1:5000"
#define BROKER_ENDPOINT "tcp://127.0.0.1:5000"
#define NUM_CLIENTS 1
#define TYPE_REQUEST 0
static void
client_task(zsock_t *pipe, void *args);
int main(int argc, char *argv[]) {
//int verbose = (argc > 1 && streq (argv[1], "-v"));
zactor_t *clients[NUM_CLIENTS];
int i = 0;
for (; i < NUM_CLIENTS; i++) {
clients[i] = zactor_new(client_task, NULL);
if (zctx_interrupted) {
zclock_log("error signal handled...");
}
}
for (i = 0; i < NUM_CLIENTS; i++) {
zactor_destroy(&clients[i]);
}
zactor_destroy(clients);
return 0;
}
static void
client_task(zsock_t *pipe, void *args) {
mdp_client_t *session2 = mdp_client_new(BROKER_ENDPOINT, 0);
int count; // number of request
zmsg_t *reply = NULL; //reply client will receive
zmsg_t *request = zmsg_new(); // request initialization
int64_t start; //start time to see processing time
int64_t end; //end time
// setting client request string
int length = snprintf( NULL, 0, "%d", TYPE_REQUEST);
char* request_str = malloc( length + 1 );
snprintf( request_str, length + 1, "%d", TYPE_REQUEST );
//start the time
start= zclock_mono();
// send all request without wait the reply==> ZMQ doc calls this Asynchronous Client
for (count = 0; count < 50; count++) {
int succ = zmsg_pushstr(request, request_str); //push the string set before into the request message
// handle error
if (succ == -1) {
puts("ERROR ");
}
//send request to broker for service "coffee" in this case
mdp_client_send(session2, "coffee", &request);
char *command; //command received
char *service; // from which service
zmsg_t *reply2 = mdp_client_recv(session2,&command, &service); //reply if any
//if reply is null, just tell to stdout
if (reply2 == NULL) {
puts("NO REPLY...");
}
zmsg_destroy(&reply2);
// reinitialize request
request = zmsg_new();
}
//dealloc any msg or string
free(request_str);
zmsg_destroy(&request);
zmsg_destroy(&reply);
end = zclock_mono() - start;
//print how many requests client tried to send and how much time has just spent on it
printf("%d requests/replies processed\n", count);
printf("Time for synchronous Client is : %ld ms", end);
mdp_client_destroy(&session2); //destroy and free memory
}