1 /*
2 * lws-minimal-ws-proxy
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 websocket proxy distributing what is received on a
11 * dumb-increment wss connection to https://libwebsockets.org to all
12 * browsers connected to this server.
13 *
14 * To keep it simple, it serves stuff in the subdirectory "./mount-origin" of
15 * the directory it was started in.
16 * You can change that by changing mount.origin.
17 */
18
19 #include <libwebsockets.h>
20 #include <string.h>
21 #include <signal.h>
22
23 #define LWS_PLUGIN_STATIC
24 #include "protocol_lws_minimal.c"
25
26 static struct lws_protocols protocols[] = {
27 { "http", lws_callback_http_dummy, 0, 0, 0, NULL, 0},
28 LWS_PLUGIN_PROTOCOL_MINIMAL,
29
30 LWS_PROTOCOL_LIST_TERM
31 };
32
33 static int interrupted;
34
35 static const struct lws_http_mount mount = {
36 /* .mount_next */ NULL, /* linked-list "next" */
37 /* .mountpoint */ "/", /* mountpoint URL */
38 /* .origin */ "./mount-origin", /* serve from dir */
39 /* .def */ "index.html", /* default filename */
40 /* .protocol */ NULL,
41 /* .cgienv */ NULL,
42 /* .extra_mimetypes */ NULL,
43 /* .interpret */ NULL,
44 /* .cgi_timeout */ 0,
45 /* .cache_max_age */ 0,
46 /* .auth_mask */ 0,
47 /* .cache_reusable */ 0,
48 /* .cache_revalidate */ 0,
49 /* .cache_intermediaries */ 0,
50 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
51 /* .mountpoint_len */ 1, /* char count */
52 /* .basic_auth_login_file */ NULL,
53 };
54
sigint_handler(int sig)55 void sigint_handler(int sig)
56 {
57 interrupted = 1;
58 }
59
main(int argc,const char ** argv)60 int main(int argc, const char **argv)
61 {
62 struct lws_context_creation_info info;
63 struct lws_context *context;
64 const char *p;
65 int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
66 /* for LLL_ verbosity above NOTICE to be built into lws,
67 * lws must have been configured and built with
68 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
69 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
70 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
71 /* | LLL_DEBUG */;
72
73 signal(SIGINT, sigint_handler);
74
75 if ((p = lws_cmdline_option(argc, argv, "-d")))
76 logs = atoi(p);
77
78 lws_set_log_level(logs, NULL);
79 lwsl_user("LWS minimal ws proxy | visit http://localhost:7681\n");
80
81 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
82 info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT |
83 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
84 info.port = 7681;
85 info.mounts = &mount;
86 info.protocols = protocols;
87
88 context = lws_create_context(&info);
89 if (!context) {
90 lwsl_err("lws init failed\n");
91 return 1;
92 }
93
94 while (n >= 0 && !interrupted)
95 n = lws_service(context, 0);
96
97 lws_context_destroy(context);
98
99 return 0;
100 }
101