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//
// Copyright 2017 Garrett D'Amore <garrett@damore.org>
// Copyright 2017 Capitar IT Group BV <info@capitar.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "convey.h"
#include "nng.h"
#include <string.h>
static int nclients = 200;
static char *addr = "inproc:///atscale";
void
serve(void *arg)
{
nng_socket rep = *(nng_socket *) arg;
nng_msg * msg;
for (;;) {
if (nng_recvmsg(rep, &msg, 0) != 0) {
nng_close(rep);
return;
}
if (nng_sendmsg(rep, msg, 0) != 0) {
nng_close(rep);
return;
}
}
}
int
openclients(nng_socket *clients, int num)
{
int rv;
int i;
uint64_t t;
for (i = 0; i < num; i++) {
if ((rv = nng_req_open(&clients[i])) != 0) {
printf("open #%d: %s\n", i, nng_strerror(rv));
return (rv);
}
t = 100000; // 100ms
rv = nng_setopt(clients[i], NNG_OPT_RCVTIMEO, &t, sizeof(t));
if (rv != 0) {
printf(
"setopt(RCVTIMEO) #%d: %s\n", i, nng_strerror(rv));
return (rv);
}
t = 100000; // 100ms
rv = nng_setopt(clients[i], NNG_OPT_SNDTIMEO, &t, sizeof(t));
if (rv != 0) {
printf(
"setopt(SNDTIMEO) #%d: %s\n", i, nng_strerror(rv));
return (rv);
}
rv = nng_dial(clients[i], addr, NULL, NNG_FLAG_SYNCH);
if (rv != 0) {
printf("dial #%d: %s\n", i, nng_strerror(rv));
return (rv);
}
}
return (0);
}
int
transact(nng_socket *clients, int num)
{
nng_msg *msg;
int rv;
int i;
for (i = 0; i < num; i++) {
if ((rv = nng_msg_alloc(&msg, 0)) != 0) {
printf("alloc #%d: %s\n", i, nng_strerror(rv));
return (rv);
}
if ((rv = nng_sendmsg(clients[i], msg, 0)) != 0) {
nng_msg_free(msg);
printf("sendmsg #%d: %s", i, nng_strerror(rv));
return (rv);
}
if ((rv = nng_recvmsg(clients[i], &msg, 0)) != 0) {
printf("recvmsg #%d: %s", i, nng_strerror(rv));
return (rv);
}
nng_msg_free(msg);
}
return (0);
}
void
closeclients(nng_socket *clients, int num)
{
int i;
nng_usleep(1000);
for (i = 0; i < num; i++) {
if (clients[i] > 0) {
nng_close(clients[i]);
}
}
}
Main({
nng_socket *clients;
void * server;
int * results;
int depth = 256;
nng_socket rep;
clients = calloc(nclients, sizeof(nng_socket));
results = calloc(nclients, sizeof(int));
if ((nng_rep_open(&rep) != 0) ||
(nng_setopt(rep, NNG_OPT_RCVBUF, &depth, sizeof(depth)) != 0) ||
(nng_setopt(rep, NNG_OPT_SNDBUF, &depth, sizeof(depth)) != 0) ||
(nng_listen(rep, addr, NULL, NNG_FLAG_SYNCH) != 0) ||
(nng_thread_create(&server, serve, &rep) != 0)) {
fprintf(stderr, "Unable to set up server!\n");
exit(1);
}
Test("Scalability", {
Convey("We can handle many many clients", {
int i;
So(openclients(clients, nclients) == 0);
So(transact(clients, nclients) == 0);
for (i = 0; i < nclients; i++) {
So(nng_close(clients[i]) == 0);
}
});
});
});
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