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149 lines
3.9 KiB
149 lines
3.9 KiB
/*
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* lws-minimal-ws-server
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*
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* Written in 2010-2019 by Andy Green <andy@warmcat.com>
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*
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* This file is made available under the Creative Commons CC0 1.0
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* Universal Public Domain Dedication.
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*
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* This demonstrates a minimal ws server that can cooperate with
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* other threads cleanly. Two other threads are started, which fill
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* a ringbuffer with strings at 10Hz.
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*
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* The actual work and thread spawning etc are done in the protocol
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* implementation in protocol_lws_minimal.c.
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*
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* To keep it simple, it serves stuff in the subdirectory "./mount-origin" of
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* the directory it was started in.
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* You can change that by changing mount.origin.
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*/
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#include <libwebsockets.h>
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#include <string.h>
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#include <signal.h>
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#include <pthread.h>
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#define LWS_PLUGIN_STATIC
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#include "protocol_lws_minimal.c"
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#define COUNT_THREADS 2
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static struct lws_protocols protocols[] = {
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{ "http", lws_callback_http_dummy, 0, 0 },
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LWS_PLUGIN_PROTOCOL_MINIMAL,
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{ NULL, NULL, 0, 0 } /* terminator */
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};
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static struct lws_context *context;
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static int interrupted;
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static const struct lws_http_mount mount = {
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/* .mount_next */ NULL, /* linked-list "next" */
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/* .mountpoint */ "/", /* mountpoint URL */
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/* .origin */ "./mount-origin", /* serve from dir */
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/* .def */ "index.html", /* default filename */
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/* .protocol */ NULL,
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/* .cgienv */ NULL,
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/* .extra_mimetypes */ NULL,
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/* .interpret */ NULL,
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/* .cgi_timeout */ 0,
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/* .cache_max_age */ 0,
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/* .auth_mask */ 0,
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/* .cache_reusable */ 0,
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/* .cache_revalidate */ 0,
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/* .cache_intermediaries */ 0,
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/* .origin_protocol */ LWSMPRO_FILE, /* files in a dir */
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/* .mountpoint_len */ 1, /* char count */
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/* .basic_auth_login_file */ NULL,
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};
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/*
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* This demonstrates how to pass a pointer into a specific protocol handler
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* running on a specific vhost. In this case, it's our default vhost and
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* we pass the pvo named "config" with the value a const char * "myconfig".
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*
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* This is the preferred way to pass configuration into a specific vhost +
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* protocol instance.
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*/
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static const struct lws_protocol_vhost_options pvo_ops = {
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NULL,
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NULL,
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"config", /* pvo name */
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(void *)"myconfig" /* pvo value */
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};
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static const struct lws_protocol_vhost_options pvo = {
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NULL, /* "next" pvo linked-list */
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&pvo_ops, /* "child" pvo linked-list */
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"lws-minimal", /* protocol name we belong to on this vhost */
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"" /* ignored */
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};
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void *thread_service(void *threadid)
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{
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while (lws_service_tsi(context, 1000,
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(int)(lws_intptr_t)threadid) >= 0 &&
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!interrupted)
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;
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pthread_exit(NULL);
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return NULL;
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}
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void sigint_handler(int sig)
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{
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interrupted = 1;
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}
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int main(int argc, const char **argv)
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{
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int n, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
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pthread_t pthread_service[COUNT_THREADS];
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struct lws_context_creation_info info;
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const char *p;
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void *retval;
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signal(SIGINT, sigint_handler);
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if ((p = lws_cmdline_option(argc, argv, "-d")))
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logs = atoi(p);
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lws_set_log_level(logs, NULL);
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lwsl_user("LWS minimal ws server + threads + smp | visit http://localhost:7681\n");
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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info.port = 7681;
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info.mounts = &mount;
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info.protocols = protocols;
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info.pvo = &pvo; /* per-vhost options */
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info.count_threads = COUNT_THREADS;
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info.options =
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LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
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context = lws_create_context(&info);
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if (!context) {
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lwsl_err("lws init failed\n");
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return 1;
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}
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lwsl_notice(" Service threads: %d\n", lws_get_count_threads(context));
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/* start all the service threads */
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for (n = 0; n < lws_get_count_threads(context); n++)
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if (pthread_create(&pthread_service[n], NULL, thread_service,
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(void *)(lws_intptr_t)n))
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lwsl_err("Failed to start service thread\n");
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/* wait for all the service threads to exit */
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while ((--n) >= 0)
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pthread_join(pthread_service[n], &retval);
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lws_context_destroy(context);
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return 0;
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}
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