mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
47e10ab200
This builds on the new dbus role support to provide a minimal example proxy between ws and dbus. A client app is provided that asks the proxy to connect to libwebsockets.org and proxy the drawing data from the mirror example there back to the dbus client using dbus messages.
101 lines
2.6 KiB
C
101 lines
2.6 KiB
C
/*
|
|
* lws-minimal-dbus-ws-proxy
|
|
*
|
|
* Copyright (C) 2018 Andy Green <andy@warmcat.com>
|
|
*
|
|
* This file is made available under the Creative Commons CC0 1.0
|
|
* Universal Public Domain Dedication.
|
|
*
|
|
* This demonstrates a minimal session dbus server that uses the lws event loop,
|
|
* and allows proxying ws client connections via DBUS.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <signal.h>
|
|
|
|
#include <libwebsockets.h>
|
|
#include <libwebsockets/lws-dbus.h>
|
|
|
|
#define LWS_PLUGIN_STATIC
|
|
#include "protocol_lws_minimal_dbus_ws_proxy.c"
|
|
|
|
static int interrupted;
|
|
static struct lws_protocols protocols[] = {
|
|
LWS_PLUGIN_PROTOCOL_MINIMAL_DBUS_WSPROXY,
|
|
{ NULL, NULL, 0, 0 } /* terminator */
|
|
};
|
|
|
|
/*
|
|
* we pass the dbus address to connect to proxy with from outside the
|
|
* protocol plugin... eg if built as a plugin for lwsws, you would instead
|
|
* set this pvo in the lwsws JSON config.
|
|
*/
|
|
|
|
static const struct lws_protocol_vhost_options pvo_ads = {
|
|
NULL,
|
|
NULL,
|
|
"ads", /* pvo name */
|
|
(void *)"unix:abstract=org.libwebsockets.wsclientproxy" /* pvo value */
|
|
};
|
|
|
|
static const struct lws_protocol_vhost_options pvo = {
|
|
NULL, /* "next" pvo linked-list */
|
|
&pvo_ads, /* "child" pvo linked-list */
|
|
"lws-minimal-dbus-wsproxy", /* protocol name we belong to on this vhost */
|
|
"" /* ignored */
|
|
};
|
|
|
|
void sigint_handler(int sig)
|
|
{
|
|
interrupted = 1;
|
|
}
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
static struct lws_context *context;
|
|
struct lws_context_creation_info info;
|
|
const char *p;
|
|
int n = 0, 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 */ /* | LLL_THREAD */;
|
|
|
|
signal(SIGINT, sigint_handler);
|
|
|
|
if ((p = lws_cmdline_option(argc, argv, "-d")))
|
|
logs = atoi(p);
|
|
|
|
lws_set_log_level(logs, NULL);
|
|
lwsl_user("LWS DBUS ws client proxy\n");
|
|
|
|
memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
|
|
info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
|
|
info.port = CONTEXT_PORT_NO_LISTEN;
|
|
info.ws_ping_pong_interval = 30;
|
|
info.protocols = protocols;
|
|
info.pvo = &pvo;
|
|
|
|
context = lws_create_context(&info);
|
|
if (!context) {
|
|
lwsl_err("lws init failed\n");
|
|
return 1;
|
|
}
|
|
|
|
/* lws event loop (default poll one) */
|
|
|
|
while (n >= 0 && !interrupted)
|
|
n = lws_service(context, 1000);
|
|
|
|
lws_context_destroy(context);
|
|
|
|
lwsl_notice("Exiting cleanly\n");
|
|
|
|
return 0;
|
|
}
|