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
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/*
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* lws-minimal-ws-client
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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 the a minimal ws client using lws.
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*
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* It connects to https://libwebsockets.org/ and makes a
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* wss connection to the dumb-increment protocol there. While
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* connected, it prints the numbers it is being sent by
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* dumb-increment protocol.
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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, rx_seen, test;
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static struct lws *client_wsi;
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static int
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callback_dumb_increment(struct lws *wsi, enum lws_callback_reasons reason,
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void *user, void *in, size_t len)
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{
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switch (reason) {
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/* because we are protocols[0] ... */
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case LWS_CALLBACK_CLIENT_CONNECTION_ERROR:
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lwsl_err("CLIENT_CONNECTION_ERROR: %s\n",
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in ? (char *)in : "(null)");
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client_wsi = NULL;
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break;
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case LWS_CALLBACK_CLIENT_ESTABLISHED:
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lwsl_user("%s: established\n", __func__);
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break;
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case LWS_CALLBACK_CLIENT_RECEIVE:
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lwsl_user("RX: %s\n", (const char *)in);
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rx_seen++;
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if (test && rx_seen == 10)
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interrupted = 1;
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break;
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case LWS_CALLBACK_CLIENT_CLOSED:
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client_wsi = NULL;
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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 const struct lws_protocols protocols[] = {
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{
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"dumb-increment-protocol",
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callback_dumb_increment,
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0,
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0,
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},
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{ NULL, NULL, 0, 0 }
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};
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static void
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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_client_connect_info i;
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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, lws
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* must have been configured with -DCMAKE_BUILD_TYPE=DEBUG
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* 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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test = !!lws_cmdline_option(argc, argv, "-t");
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lws_set_log_level(logs, NULL);
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lwsl_user("LWS minimal ws client rx [-d <logs>] [--h2] [-t (test)]\n");
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT;
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info.port = CONTEXT_PORT_NO_LISTEN; /* we do not run any server */
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info.protocols = protocols;
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#if defined(LWS_WITH_MBEDTLS)
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/*
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* OpenSSL uses the system trust store. mbedTLS has to be told which
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* CA to trust explicitly.
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*/
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info.client_ssl_ca_filepath = "./libwebsockets.org.cer";
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#endif
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/*
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* since we know this lws context is only ever going to be used with
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* one client wsis / fds / sockets at a time, let lws know it doesn't
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* have to use the default allocations for fd tables up to ulimit -n.
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* It will just allocate for 1 internal and 1 (+ 1 http2 nwsi) that we
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* will use.
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*/
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info.fd_limit_per_thread = 1 + 1 + 1;
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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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memset(&i, 0, sizeof i); /* otherwise uninitialized garbage */
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i.context = context;
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i.port = 443;
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i.address = "libwebsockets.org";
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i.path = "/";
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i.host = i.address;
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i.origin = i.address;
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i.ssl_connection = LCCSCF_USE_SSL;
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i.protocol = protocols[0].name; /* "dumb-increment-protocol" */
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i.pwsi = &client_wsi;
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if (lws_cmdline_option(argc, argv, "--h2"))
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i.alpn = "h2";
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lws_client_connect_via_info(&i);
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while (n >= 0 && client_wsi && !interrupted)
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n = lws_service(context, 0);
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lws_context_destroy(context);
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lwsl_user("Completed %s\n", rx_seen > 10 ? "OK" : "Failed");
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return rx_seen > 10;
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}
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