1 /*
2 * lws-minimal-http-server-eventlib-smp
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 http[s] server that can work with any of the
10 * supported event loop backends, or the default poll() one.
11 *
12 * To keep it simple, it serves stuff from the subdirectory
13 * "./mount-origin" of the directory it was started in.
14 * You can change that by changing mount.origin below.
15 */
16
17 #include <libwebsockets.h>
18 #include <string.h>
19 #include <signal.h>
20
21 #if defined(WIN32)
22 #define HAVE_STRUCT_TIMESPEC
23 #if defined(pid_t)
24 #undef pid_t
25 #endif
26 #endif
27
28 #include <pthread.h>
29
30 #define COUNT_THREADS 8
31
32 static struct lws_context *context;
33 static volatile 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
thread_service(void * threadid)55 void *thread_service(void *threadid)
56 {
57 while (lws_service_tsi(context, 10000,
58 (int)(lws_intptr_t)threadid) >= 0 &&
59 !interrupted)
60 ;
61
62 pthread_exit(NULL);
63
64 return NULL;
65 }
66
signal_cb(void * handle,int signum)67 void signal_cb(void *handle, int signum)
68 {
69 interrupted = 1;
70
71 switch (signum) {
72 case SIGTERM:
73 case SIGINT:
74 break;
75 default:
76 lwsl_err("%s: signal %d\n", __func__, signum);
77 break;
78 }
79 lws_context_destroy(context);
80 }
81
sigint_handler(int sig)82 void sigint_handler(int sig)
83 {
84 signal_cb(NULL, sig);
85 }
86
main(int argc,const char ** argv)87 int main(int argc, const char **argv)
88 {
89 pthread_t pthread_service[COUNT_THREADS];
90 struct lws_context_creation_info info;
91 const char *p;
92 void *retval;
93 int n, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
94 /* for LLL_ verbosity above NOTICE to be built into lws,
95 * lws must have been configured and built with
96 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
97 /* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
98 /* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
99 /* | LLL_DEBUG */;
100
101 if ((p = lws_cmdline_option(argc, argv, "-d")))
102 logs = atoi(p);
103
104 lws_set_log_level(logs, NULL);
105 lwsl_user("LWS minimal http server eventlib SMP | visit http://localhost:7681\n");
106 lwsl_user(" [-s (ssl)] [--uv (libuv)] [--ev (libev)] [--event (libevent)]\n");
107 lwsl_user("WARNING: Not stable, under development!\n");
108
109 memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
110 info.port = 7681;
111 info.mounts = &mount;
112 info.error_document_404 = "/404.html";
113 info.pcontext = &context;
114 info.signal_cb = signal_cb;
115 info.options =
116 LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
117
118 if ((p = lws_cmdline_option(argc, argv, "-t"))) {
119 info.count_threads = (unsigned int)atoi(p);
120 if (info.count_threads < 1 || info.count_threads > LWS_MAX_SMP)
121 return 1;
122 } else
123 info.count_threads = COUNT_THREADS;
124
125 #if defined(LWS_WITH_TLS)
126 if (lws_cmdline_option(argc, argv, "-s")) {
127 info.options |= LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
128 info.ssl_cert_filepath = "localhost-100y.cert";
129 info.ssl_private_key_filepath = "localhost-100y.key";
130 }
131 #endif
132
133 if (lws_cmdline_option(argc, argv, "--uv"))
134 info.options |= LWS_SERVER_OPTION_LIBUV;
135 else
136 if (lws_cmdline_option(argc, argv, "--event"))
137 info.options |= LWS_SERVER_OPTION_LIBEVENT;
138 else
139 if (lws_cmdline_option(argc, argv, "--ev"))
140 info.options |= LWS_SERVER_OPTION_LIBEV;
141 else
142 if (lws_cmdline_option(argc, argv, "--glib"))
143 info.options |= LWS_SERVER_OPTION_GLIB;
144 else
145 signal(SIGINT, sigint_handler);
146
147 context = lws_create_context(&info);
148 if (!context) {
149 lwsl_err("lws init failed\n");
150 return 1;
151 }
152
153 lwsl_notice(" Service threads: %d\n", lws_get_count_threads(context));
154
155 /* start all the service threads */
156
157 for (n = 0; n < lws_get_count_threads(context); n++)
158 if (pthread_create(&pthread_service[n], NULL, thread_service,
159 (void *)(lws_intptr_t)n))
160 lwsl_err("Failed to start service thread\n");
161
162 /* wait for all the service threads to exit */
163
164 while ((--n) >= 0)
165 pthread_join(pthread_service[n], &retval);
166
167 lwsl_notice("%s: calling external context destroy\n", __func__);
168 lws_context_destroy(context);
169
170 return 0;
171 }
172