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#include <libwebsockets.h>
#include <string.h>
#include <signal.h>
#if defined(WIN32)
#define HAVE_STRUCT_TIMESPEC
#if defined(pid_t)
#undef pid_t
#endif
#endif
static int nclients = 11;
unsigned char msg[LWS_PRE+128];
static int message_delay = 500000; // microseconds
static int connection_delay = 100000; // microseconds
static struct lws_context *context;
static const char *server_address = "localhost", *pro = "lws-minimal";
static int interrupted = 0, port = 7681, ssl_connection = 0;
static int connect_client()
{
struct lws_client_connect_info i;
memset(&i, 0, sizeof(i));
i.context = context;
i.port = port;
i.address = server_address;
i.path = "/";
i.host = i.address;
i.origin = i.address;
i.ssl_connection = ssl_connection;
i.protocol = pro;
i.local_protocol_name = pro;
//usleep(connection_delay);
lwsl_notice("%s: connection %s:%d\n", __func__, i.address, i.port);
if (!lws_client_connect_via_info(&i)) return 1;
return 0;
}
static int
callback(struct lws *wsi, enum lws_callback_reasons reason,
void *user, void *in, size_t len)
{
int m= 0, n = 0;
short r;
#if defined(_DEBUG) && !defined(LWS_WITH_NO_LOGS)
size_t remain;
int first = 0, final = 0;
#endif
//lwsl_notice("callback called with reason %d\n", reason);
switch (reason) {
case LWS_CALLBACK_PROTOCOL_INIT:
for (n = 0; n < nclients; n++)
connect_client();
break;
case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
lwsl_err("CLIENT_CONNECTION_ERROR: %s\n", in ? (char *)in :
"(null)");
if(--nclients == 0) interrupted = 1;
break;
/* --- client callbacks --- */
case LWS_CALLBACK_CLIENT_ESTABLISHED:
lws_callback_on_writable(wsi);
lwsl_user("%s: established connection, wsi = %p\n",
__func__, wsi);
break;
case LWS_CALLBACK_CLIENT_CLOSED:
lwsl_user("%s: CLOSED\n", __func__);
if(--nclients == 0) interrupted = 1;
break;
case LWS_CALLBACK_CLIENT_WRITEABLE:
m = lws_write(wsi, msg + LWS_PRE, 128, LWS_WRITE_TEXT);
if (m < 128) {
lwsl_err("sending message failed: %d < %d\n", m, n);
return -1;
}
/*
* Schedule the timer after minimum message delay plus the
* random number of centiseconds.
*/
if (lws_get_random(lws_get_context(wsi), &r, 2) == 2) {
n = message_delay + 10000*(r % 100);
lwsl_debug("set timer on %d usecs\n", n);
lws_set_timer_usecs(wsi, n);
}
break;
case LWS_CALLBACK_TIMER:
// Let the main loop know we want to send another message to the
// server
lws_callback_on_writable(wsi);
break;
case LWS_CALLBACK_CLIENT_RECEIVE:
#if defined(_DEBUG) && !defined(LWS_WITH_NO_LOGS)
first = lws_is_first_fragment(wsi);
final = lws_is_final_fragment(wsi);
remain = lws_remaining_packet_payload(wsi);
lwsl_debug("LWS_CALLBACK_RECEIVE: len = %lu, first = %d, "
"final = %d, remains = %lu\n",
(unsigned long)len, first, final,
(unsigned long)remain);
#endif
break;
case LWS_CALLBACK_WS_PEER_INITIATED_CLOSE:
lwsl_notice("server initiated connection close: len = %lu, "
"in = %s\n", (unsigned long)len, (char*)in);
return 0;
default:
break;
}
return lws_callback_http_dummy(wsi, reason, user, in, len);
}
static const struct lws_protocols protocols[] = {
{ "spam-rx-tx", callback, 4096, 4096, 0, NULL, 0 },
LWS_PROTOCOL_LIST_TERM
};
static void
sigint_handler(int sig)
{
interrupted = 1;
}
int main(int argc, const char **argv)
{
struct lws_context_creation_info info;
const char *p;
int n = 0, logs =
LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
#ifndef WIN32
srandom((unsigned int)time(0));
#endif
memset(msg, 'x', sizeof(msg));
signal(SIGINT, sigint_handler);
if (lws_cmdline_option(argc, argv, "-d"))
logs |= LLL_INFO | LLL_DEBUG;
lws_set_log_level(logs, NULL);
memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
info.port = CONTEXT_PORT_NO_LISTEN; /* we do not run any server */
info.protocols = protocols;
#if defined(LWS_WITH_MBEDTLS) || defined(USE_WOLFSSL)
/*
* OpenSSL uses the system trust store. mbedTLS has to be told which
* CA to trust explicitly.
*/
info.client_ssl_ca_filepath = "./libwebsockets.org.cer";
#endif
if ((p = lws_cmdline_option(argc, argv, "-h"))) {
server_address = p;
}
if ((p = lws_cmdline_option(argc, argv, "-s"))) {
ssl_connection |=
LCCSCF_USE_SSL |
LCCSCF_ALLOW_SELFSIGNED |
LCCSCF_SKIP_SERVER_CERT_HOSTNAME_CHECK;
}
if ((p = lws_cmdline_option(argc, argv, "-p"))) {
port = atoi(p);
if (port > 65535 || port < 0)
return 1;
}
if ((p = lws_cmdline_option(argc, argv, "-n"))) {
n = atoi(p);
if (n < 1)
n = 1;
if (n > LWS_MAX_SMP)
n = LWS_MAX_SMP;
if (n < nclients)
nclients = n;
lwsl_notice("Start test clients: %d\n", nclients);
}
if ((p = lws_cmdline_option(argc, argv, "-c"))) {
connection_delay = atoi(p);
lwsl_notice("Connection delay: %d\n", connection_delay);
}
if ((p = lws_cmdline_option(argc, argv, "-m"))) {
message_delay = atoi(p);
lwsl_notice("Message delay: %d\n", connection_delay);
}
info.fd_limit_per_thread = (unsigned int)(1 + nclients + 1);
context = lws_create_context(&info);
if (!context) {
lwsl_err("lws init failed\n");
return 1;
}
while (n >= 0 && !interrupted)
n = lws_service(context, 0);
lwsl_notice("%s: exiting service loop. n = %d, interrupted = %d\n",
__func__, n, interrupted);
lws_context_destroy(context);
return 0;
}
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