mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
498a4e2bd7
wsi timeout, wsi hrtimer, sequencer timeout and vh-protocol timer all now participate on a single sorted us list. The whole idea of polling wakes is thrown out, poll waits ignore the timeout field and always use infinite timeouts. Introduce a public api that can schedule its own callback from the event loop with us resolution (usually ms is all the platform can do). Upgrade timeouts and sequencer timeouts to also be able to use us resolution. Introduce a prepared fakewsi in the pt, so we don't have to allocate one on the heap when we need it. Directly handle vh-protocol timer if LWS_MAX_SMP == 1
148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/*
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* lws-minimal-http-server-form-get
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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 http server that performs a form GET with a couple
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* of parameters. It dumps the parameters to the console log and redirects
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* to another page.
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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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static int interrupted;
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static const char * param_names[] = {
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"text1",
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"send"
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};
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static int
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callback_http(struct lws *wsi, enum lws_callback_reasons reason, void *user,
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void *in, size_t len)
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{
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uint8_t buf[LWS_PRE + LWS_RECOMMENDED_MIN_HEADER_SPACE],
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*start = &buf[LWS_PRE], *p = start,
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*end = &buf[sizeof(buf) - 1];
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const char *val;
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int n;
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switch (reason) {
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case LWS_CALLBACK_HTTP:
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if (!lws_hdr_total_length(wsi, WSI_TOKEN_GET_URI))
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/* not a GET */
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break;
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lwsl_err("%s: %s\n", __func__, (const char *)in);
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if (strcmp((const char *)in, "/form1"))
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/* not our form URL */
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break;
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/* we just dump the decoded things to the log */
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for (n = 0; n < (int)LWS_ARRAY_SIZE(param_names); n++) {
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val = lws_get_urlarg_by_name(wsi, param_names[n],
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(char *)buf, sizeof(buf));
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if (!val)
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lwsl_user("%s: undefined\n", param_names[n]);
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else
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lwsl_user("%s: (len %d) '%s'\n", param_names[n],
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(int)strlen((const char *)buf),buf);
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}
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/*
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* Our response is to redirect to a static page. We could
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* have generated a dynamic html page here instead.
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*/
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if (lws_http_redirect(wsi, HTTP_STATUS_MOVED_PERMANENTLY,
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(unsigned char *)"after-form1.html",
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16, &p, end) < 0)
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return -1;
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break;
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default:
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break;
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}
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return lws_callback_http_dummy(wsi, reason, user, in, len);
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}
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static struct lws_protocols protocols[] = {
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{ "http", callback_http, 0, 0 },
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{ NULL, NULL, 0, 0 } /* terminator */
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};
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/* default mount serves the URL space from ./mount-origin */
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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 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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struct lws_context_creation_info info;
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struct lws_context *context;
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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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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 http server GET | 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.protocols = protocols;
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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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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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while (n >= 0 && !interrupted)
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n = lws_service(context, 0);
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lws_context_destroy(context);
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return 0;
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}
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