1 /*
2 * lws-minimal-ws-server
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 chat 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 const lws_retry_bo_t retry = {
31 .secs_since_valid_ping = 3,
32 .secs_since_valid_hangup = 10,
33 };
34
35 static int interrupted;
36
37 static const struct lws_http_mount mount = {
38 /* .mount_next */ NULL, /* linked-list "next" */
39 /* .mountpoint */ "/", /* mountpoint URL */
40 /* .origin */ "./mount-origin", /* serve from dir */
41 /* .def */ "index.html", /* default filename */
42 /* .protocol */ NULL,
43 /* .cgienv */ NULL,
44 /* .extra_mimetypes */ NULL,
45 /* .interpret */ NULL,
46 /* .cgi_timeout */ 0,
47 /* .cache_max_age */ 0,
48 /* .auth_mask */ 0,
49 /* .cache_reusable */ 0,
50 /* .cache_revalidate */ 0,
51 /* .cache_intermediaries */ 0,
52 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
53 /* .mountpoint_len */ 1, /* char count */
54 /* .basic_auth_login_file */ NULL,
55 };
56
57 #if defined(LWS_WITH_PLUGINS)
58 /* if plugins enabled, only protocols explicitly named in pvo bind to vhost */
59 static struct lws_protocol_vhost_options pvo = { NULL, NULL, "lws-minimal", "" };
60 #endif
61
sigint_handler(int sig)62 void sigint_handler(int sig)
63 {
64 interrupted = 1;
65 }
66
main(int argc,const char ** argv)67 int main(int argc, const char **argv)
68 {
69 struct lws_context_creation_info info;
70 struct lws_context *context;
71 const char *p;
72 int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
73 /* for LLL_ verbosity above NOTICE to be built into lws,
74 * lws must have been configured and built with
75 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
76 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
77 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
78 /* | LLL_DEBUG */;
79
80 signal(SIGINT, sigint_handler);
81
82 if ((p = lws_cmdline_option(argc, argv, "-d")))
83 logs = atoi(p);
84
85 lws_set_log_level(logs, NULL);
86 lwsl_user("LWS minimal ws server | visit http://localhost:7681 (-s = use TLS / https)\n");
87
88 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
89 info.port = 7681;
90 info.mounts = &mount;
91 info.protocols = protocols;
92 info.vhost_name = "localhost";
93 #if defined(LWS_WITH_PLUGINS)
94 info.pvo = &pvo;
95 #endif
96 info.options =
97 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
98
99 #if defined(LWS_WITH_TLS)
100 if (lws_cmdline_option(argc, argv, "-s")) {
101 lwsl_user("Server using TLS\n");
102 info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
103 info.ssl_cert_filepath = "localhost-100y.cert";
104 info.ssl_private_key_filepath = "localhost-100y.key";
105 }
106 #endif
107
108 if (lws_cmdline_option(argc, argv, "-h"))
109 info.options |= LWS_SERVER_OPTION_VHOST_UPG_STRICT_HOST_CHECK;
110
111 if (lws_cmdline_option(argc, argv, "-v"))
112 info.retry_and_idle_policy = &retry;
113
114 context = lws_create_context(&info);
115 if (!context) {
116 lwsl_err("lws init failed\n");
117 return 1;
118 }
119
120 while (n >= 0 && !interrupted)
121 n = lws_service(context, 0);
122
123 lws_context_destroy(context);
124
125 return 0;
126 }
127