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/*
* lws-minimal-ws-client-echo
*
* Written in 2010-2019 by Andy Green <andy@warmcat.com>
*
* This file is made available under the Creative Commons CC0 1.0
* Universal Public Domain Dedication.
*
* This demonstrates a ws client that echoes back what it was sent, in a
* way compatible with autobahn -m fuzzingserver
*/
#include <libwebsockets.h>
#include <string.h>
#include <signal.h>
#define LWS_PLUGIN_STATIC
#include "protocol_lws_minimal_client_echo.c"
static struct lws_protocols protocols[] = {
LWS_PLUGIN_PROTOCOL_MINIMAL_CLIENT_ECHO,
LWS_PROTOCOL_LIST_TERM
};
static struct lws_context *context;
static int interrupted, port = 7681, options = 0;
static const char *url = "/", *ads = "localhost", *iface = NULL;
/* pass pointers to shared vars to the protocol */
static const struct lws_protocol_vhost_options pvo_iface = {
NULL,
NULL,
"iface", /* pvo name */
(void *)&iface /* pvo value */
};
static const struct lws_protocol_vhost_options pvo_ads = {
&pvo_iface,
NULL,
"ads", /* pvo name */
(void *)&ads /* pvo value */
};
static const struct lws_protocol_vhost_options pvo_url = {
&pvo_ads,
NULL,
"url", /* pvo name */
(void *)&url /* pvo value */
};
static const struct lws_protocol_vhost_options pvo_options = {
&pvo_url,
NULL,
"options", /* pvo name */
(void *)&options /* pvo value */
};
static const struct lws_protocol_vhost_options pvo_port = {
&pvo_options,
NULL,
"port", /* pvo name */
(void *)&port /* pvo value */
};
static const struct lws_protocol_vhost_options pvo_interrupted = {
&pvo_port,
NULL,
"interrupted", /* pvo name */
(void *)&interrupted /* pvo value */
};
static const struct lws_protocol_vhost_options pvo = {
NULL, /* "next" pvo linked-list */
&pvo_interrupted, /* "child" pvo linked-list */
"lws-minimal-client-echo", /* protocol name we belong to on this vhost */
"" /* ignored */
};
static const struct lws_extension extensions[] = {
{
"permessage-deflate",
lws_extension_callback_pm_deflate,
"permessage-deflate"
"; client_no_context_takeover"
"; client_max_window_bits"
},
{ NULL, NULL, NULL /* terminator */ }
};
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, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
/* for LLL_ verbosity above NOTICE to be built into lws,
* lws must have been configured and built with
* -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
/* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
/* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
/* | LLL_DEBUG */;
if ((p = lws_cmdline_option(argc, argv, "-d")))
logs = atoi(p);
lws_set_log_level(logs, NULL);
lwsl_user("LWS minimal ws client echo + permessage-deflate + multifragment bulk message\n");
lwsl_user(" lws-minimal-ws-client-echo [-n (no exts)] [-u url] [-p port] [-o (once)]\n");
if ((p = lws_cmdline_option(argc, argv, "-u")))
url = p;
if ((p = lws_cmdline_option(argc, argv, "-p")))
port = atoi(p);
if (lws_cmdline_option(argc, argv, "-o"))
options |= 1;
if (lws_cmdline_option(argc, argv, "--ssl"))
options |= 2;
if ((p = lws_cmdline_option(argc, argv, "-s")))
ads = p;
if ((p = lws_cmdline_option(argc, argv, "-i")))
iface = p;
lwsl_user("options %d, ads %s\n", options, ads);
memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
info.port = CONTEXT_PORT_NO_LISTEN;
info.protocols = protocols;
info.pvo = &pvo;
if (!lws_cmdline_option(argc, argv, "-n"))
info.extensions = extensions;
info.pt_serv_buf_size = 32 * 1024;
info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT |
LWS_SERVER_OPTION_VALIDATE_UTF8;
/*
* since we know this lws context is only ever going to be used with
* one client wsis / fds / sockets at a time, let lws know it doesn't
* have to use the default allocations for fd tables up to ulimit -n.
* It will just allocate for 1 internal and 1 (+ 1 http2 nwsi) that we
* will use.
*/
info.fd_limit_per_thread = 1 + 1 + 1;
if (lws_cmdline_option(argc, argv, "--libuv"))
info.options |= LWS_SERVER_OPTION_LIBUV;
else
signal(SIGINT, sigint_handler);
context = lws_create_context(&info);
if (!context) {
lwsl_err("lws init failed\n");
return 1;
}
while (!lws_service(context, 0) && !interrupted)
;
lws_context_destroy(context);
n = (options & 1) ? interrupted != 2 : interrupted == 3;
lwsl_user("Completed %d %s\n", interrupted, !n ? "OK" : "failed");
return n;
}
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