mirror of
https://github.com/warmcat/libwebsockets.git
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c9731c5f17
This is a huge patch that should be a global NOP. For unix type platforms it enables -Wconversion to issue warnings (-> error) for all automatic casts that seem less than ideal but are normally concealed by the toolchain. This is things like passing an int to a size_t argument. Once enabled, I went through all args on my default build (which build most things) and tried to make the removed default cast explicit. With that approach it neither change nor bloat the code, since it compiles to whatever it was doing before, just with the casts made explicit... in a few cases I changed some length args from int to size_t but largely left the causes alone. From now on, new code that is relying on less than ideal casting will complain and nudge me to improve it by warnings.
140 lines
3.9 KiB
C
140 lines
3.9 KiB
C
/*
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* lws-minimal-http-server-smp
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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 multithreaded http server you can make with lws.
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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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* Also for simplicity the number of threads is set in the code... note that
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* the real number of threads possible is decided by the LWS_MAX_SMP that lws
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* was configured with, by default that is 1. Lws will limit the number of
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* requested threads to the number possible.
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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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#if defined(WIN32)
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#define HAVE_STRUCT_TIMESPEC
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#if defined(pid_t)
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#undef pid_t
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#endif
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#endif
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#include <pthread.h>
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#define COUNT_THREADS 8
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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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void *thread_service(void *threadid)
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{
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while (lws_service_tsi(context, 10000,
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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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lws_cancel_service(context);
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}
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int main(int argc, const char **argv)
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{
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pthread_t pthread_service[COUNT_THREADS];
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struct lws_context_creation_info info;
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void *retval;
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const char *p;
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int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
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/* for LLL_ verbosity above NOTICE to be built into lws,
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* lws must have been configured and built with
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* -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
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/* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
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/* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
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/* | LLL_DEBUG */;
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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 http server SMP | visit http://127.0.0.1:7681\n");
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signal(SIGINT, sigint_handler);
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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.options =
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LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
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if ((p = lws_cmdline_option(argc, argv, "-t"))) {
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info.count_threads = (unsigned int)atoi(p);
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if (info.count_threads < 1 || info.count_threads > LWS_MAX_SMP)
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return 1;
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} else
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info.count_threads = COUNT_THREADS;
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#if defined(LWS_WITH_TLS)
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if (lws_cmdline_option(argc, argv, "-s")) {
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info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT | LWS_SERVER_OPTION_REQUIRE_VALID_OPENSSL_CLIENT_CERT;
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info.ssl_cert_filepath = "localhost-100y.cert";
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info.ssl_private_key_filepath = "localhost-100y.key";
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}
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#endif
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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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