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 a minimal ws server that can cooperate with
10 * other threads cleanly. Two other threads are started, which fill
11 * a ringbuffer with strings at 10Hz.
12 *
13 * The actual work and thread spawning etc are done in the protocol
14 * implementation in protocol_lws_minimal.c.
15 *
16 * To keep it simple, it serves stuff in the subdirectory "./mount-origin" of
17 * the directory it was started in.
18 * You can change that by changing mount.origin.
19 */
20
21 #include <libwebsockets.h>
22 #include <string.h>
23 #include <signal.h>
24 #if defined(WIN32)
25 #define HAVE_STRUCT_TIMESPEC
26 #if defined(pid_t)
27 #undef pid_t
28 #endif
29 #endif
30 #include <pthread.h>
31
32 #define LWS_PLUGIN_STATIC
33 #include "protocol_lws_minimal.c"
34
35 static struct lws_protocols protocols[] = {
36 { "http", lws_callback_http_dummy, 0, 0, 0, NULL, 0 },
37 LWS_PLUGIN_PROTOCOL_MINIMAL,
38 LWS_PROTOCOL_LIST_TERM
39 };
40
41 static int interrupted;
42
43 static const struct lws_http_mount mount = {
44 /* .mount_next */ NULL, /* linked-list "next" */
45 /* .mountpoint */ "/", /* mountpoint URL */
46 /* .origin */ "./mount-origin", /* serve from dir */
47 /* .def */ "index.html", /* default filename */
48 /* .protocol */ NULL,
49 /* .cgienv */ NULL,
50 /* .extra_mimetypes */ NULL,
51 /* .interpret */ NULL,
52 /* .cgi_timeout */ 0,
53 /* .cache_max_age */ 0,
54 /* .auth_mask */ 0,
55 /* .cache_reusable */ 0,
56 /* .cache_revalidate */ 0,
57 /* .cache_intermediaries */ 0,
58 /* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
59 /* .mountpoint_len */ 1, /* char count */
60 /* .basic_auth_login_file */ NULL,
61 };
62
63 /*
64 * This demonstrates how to pass a pointer into a specific protocol handler
65 * running on a specific vhost. In this case, it's our default vhost and
66 * we pass the pvo named "config" with the value a const char * "myconfig".
67 *
68 * This is the preferred way to pass configuration into a specific vhost +
69 * protocol instance.
70 */
71
72 static const struct lws_protocol_vhost_options pvo_ops = {
73 NULL,
74 NULL,
75 "config", /* pvo name */
76 (void *)"myconfig" /* pvo value */
77 };
78
79 static const struct lws_protocol_vhost_options pvo = {
80 NULL, /* "next" pvo linked-list */
81 &pvo_ops, /* "child" pvo linked-list */
82 "lws-minimal", /* protocol name we belong to on this vhost */
83 "" /* ignored */
84 };
85
sigint_handler(int sig)86 void sigint_handler(int sig)
87 {
88 interrupted = 1;
89 }
90
main(int argc,const char ** argv)91 int main(int argc, const char **argv)
92 {
93 struct lws_context_creation_info info;
94 struct lws_context *context;
95 const char *p;
96 int logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
97 /* for LLL_ verbosity above NOTICE to be built into lws,
98 * lws must have been configured and built with
99 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
100 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
101 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
102 /* | LLL_DEBUG */;
103
104 signal(SIGINT, sigint_handler);
105
106 if ((p = lws_cmdline_option(argc, argv, "-d")))
107 logs = atoi(p);
108
109 lws_set_log_level(logs, NULL);
110 lwsl_user("LWS minimal ws server + threads | visit http://localhost:7681\n");
111
112 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
113 info.port = 7681;
114 info.mounts = &mount;
115 info.protocols = protocols;
116 info.pvo = &pvo; /* per-vhost options */
117 info.options =
118 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
119
120 context = lws_create_context(&info);
121 if (!context) {
122 lwsl_err("lws init failed\n");
123 return 1;
124 }
125
126 /* start the threads that create content */
127
128 while (!interrupted)
129 if (lws_service(context, 0))
130 interrupted = 1;
131
132 lws_context_destroy(context);
133
134 return 0;
135 }
136