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 *
11 * To keep it simple, it serves stuff in the subdirectory "./mount-origin" of
12 * the directory it was started in.
13 * You can change that by changing mount.origin.
14 */
15
16 #include <libwebsockets.h>
17 #include <string.h>
18 #include <signal.h>
19
20 #define LWS_PLUGIN_STATIC
21 #include "protocol_lws_minimal.c"
22
23 static struct lws_protocols protocols[] = {
24 { "http", lws_callback_http_dummy, 0, 0, 0, NULL, 0 },
25 LWS_PLUGIN_PROTOCOL_MINIMAL,
26 LWS_PROTOCOL_LIST_TERM
27 };
28
29 static int interrupted;
30
31 static const struct lws_http_mount mount = {
32 /* .mount_next */ NULL, /* linked-list "next" */
33 /* .mountpoint */ "/", /* mountpoint URL */
34 /* .origin */ "./mount-origin", /* serve from dir */
35 /* .def */ "index.html", /* default filename */
36 /* .protocol */ NULL,
37 /* .cgienv */ NULL,
38 /* .extra_mimetypes */ NULL,
39 /* .interpret */ NULL,
40 /* .cgi_timeout */ 0,
41 /* .cache_max_age */ 0,
42 /* .auth_mask */ 0,
43 /* .cache_reusable */ 0,
44 /* .cache_revalidate */ 0,
45 /* .cache_intermediaries */ 0,
46 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
47 /* .mountpoint_len */ 1, /* char count */
48 /* .basic_auth_login_file */ NULL,
49 };
50
51 static const struct lws_extension extensions[] = {
52 {
53 "permessage-deflate",
54 lws_extension_callback_pm_deflate,
55 "permessage-deflate"
56 "; client_no_context_takeover"
57 "; client_max_window_bits"
58 },
59 { NULL, NULL, NULL /* terminator */ }
60 };
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 + permessage-deflate | visit http://localhost:7681\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.extensions = extensions;
93 info.options =
94 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
95
96 context = lws_create_context(&info);
97 if (!context) {
98 lwsl_err("lws init failed\n");
99 return 1;
100 }
101
102 while (n >= 0 && !interrupted)
103 n = lws_service(context, 0);
104
105 lws_context_destroy(context);
106
107 return 0;
108 }
109