1 /*
2 * lws-minimal-ws-broker
3 *
4 * Written in 2010-2019 by Andy Green <andy@warmcat.com>
5 *
6 * This file is made available under the Creative Commons CC0 1.0
7 * Universal Public Domain Dedication.
8 *
9 * This demonstrates the most minimal http server you can make with lws,
10 * with an added publish / broker / subscribe ws server.
11 *
12 * To keep it simple, it serves stuff in the subdirectory "./mount-origin" of
13 * the directory it was started in.
14 * You can change that by changing mount.origin.
15 */
16
17 #include <libwebsockets.h>
18 #include <string.h>
19 #include <signal.h>
20
21 #define LWS_PLUGIN_STATIC
22 #include "protocol_lws_minimal.c"
23
24 static struct lws_protocols protocols[] = {
25 { "http", lws_callback_http_dummy, 0, 0, 0, NULL, 0 },
26 LWS_PLUGIN_PROTOCOL_MINIMAL,
27 LWS_PROTOCOL_LIST_TERM
28 };
29
30 static int interrupted;
31
32 static const struct lws_http_mount mount = {
33 /* .mount_next */ NULL, /* linked-list "next" */
34 /* .mountpoint */ "/", /* mountpoint URL */
35 /* .origin */ "./mount-origin", /* serve from dir */
36 /* .def */ "index.html", /* default filename */
37 /* .protocol */ NULL,
38 /* .cgienv */ NULL,
39 /* .extra_mimetypes */ NULL,
40 /* .interpret */ NULL,
41 /* .cgi_timeout */ 0,
42 /* .cache_max_age */ 0,
43 /* .auth_mask */ 0,
44 /* .cache_reusable */ 0,
45 /* .cache_revalidate */ 0,
46 /* .cache_intermediaries */ 0,
47 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
48 /* .mountpoint_len */ 1, /* char count */
49 /* .basic_auth_login_file */ NULL,
50 };
51
sigint_handler(int sig)52 void sigint_handler(int sig)
53 {
54 interrupted = 1;
55 }
56
main(int argc,const char ** argv)57 int main(int argc, const char **argv)
58 {
59 struct lws_context_creation_info info;
60 struct lws_context *context;
61 const char *p;
62 int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
63 /* for LLL_ verbosity above NOTICE to be built into lws,
64 * lws must have been configured and built with
65 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
66 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
67 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
68 /* | LLL_DEBUG */;
69
70 signal(SIGINT, sigint_handler);
71
72 if ((p = lws_cmdline_option(argc, argv, "-d")))
73 logs = atoi(p);
74
75 lws_set_log_level(logs, NULL);
76 lwsl_user("LWS minimal ws broker | visit http://localhost:7681\n");
77
78 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
79 info.port = 7681;
80 info.mounts = &mount;
81 info.protocols = protocols;
82 info.options =
83 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
84
85 context = lws_create_context(&info);
86 if (!context) {
87 lwsl_err("lws init failed\n");
88 return 1;
89 }
90
91 while (n >= 0 && !interrupted)
92 n = lws_service(context, 0);
93
94 lws_context_destroy(context);
95
96 return 0;
97 }
98