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f7149e90c2
https://libwebsockets.org/pipermail/libwebsockets/2019-April/007937.html thanks to Bruce Perens for noting it. This doesn't change the intention or status of the CC0 files, they were pure CC0 before (ie, public domain) and they are pure CC0 now. It just gets rid of the (C) part at the top of the dedication which may be read to be a bit contradictory since the purpose is to make it public domain.
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*
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* lws-minimal-ws-client-pmd-bulk
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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 ws client that sends bulk data in multiple
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* ws fragments, in a way compatible with per-message deflate.
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*
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* It shows how to send huge messages without needing a lot of memory.
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*
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* Build and start the minimal-examples/ws-server/minmal-ws-server-pmd-bulk
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* example first. Running this sends a large message to the server and
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* exits.
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*
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* If you give both sides the -n commandline option, it disables permessage-
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* deflate compression extension.
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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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#define LWS_PLUGIN_STATIC
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#include "protocol_lws_minimal_pmd_bulk.c"
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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_PMD_BULK,
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{ NULL, NULL, 0, 0 } /* terminator */
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};
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static int interrupted, options;
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/* pass pointers to shared vars to the protocol */
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static const struct lws_protocol_vhost_options pvo_options = {
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NULL,
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NULL,
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"options", /* pvo name */
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(void *)&options /* pvo value */
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};
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static const struct lws_protocol_vhost_options pvo_interrupted = {
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&pvo_options,
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NULL,
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"interrupted", /* pvo name */
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(void *)&interrupted /* 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_interrupted, /* "child" pvo linked-list */
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"lws-minimal-pmd-bulk", /* protocol name we belong to on this vhost */
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"" /* ignored */
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};
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static const struct lws_extension extensions[] = {
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{
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"permessage-deflate",
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lws_extension_callback_pm_deflate,
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"permessage-deflate"
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"; client_no_context_takeover"
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"; client_max_window_bits"
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},
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{ NULL, NULL, NULL /* terminator */ }
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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 ws client + permessage-deflate + multifragment bulk message\n");
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lwsl_user(" needs minimal-ws-server-pmd-bulk running to communicate with\n");
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lwsl_user(" %s [-n (no exts)] [-c (compressible)]\n", argv[0]);
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memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
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info.port = CONTEXT_PORT_NO_LISTEN;
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info.protocols = protocols;
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info.pvo = &pvo;
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if (!lws_cmdline_option(argc, argv, "-n"))
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info.extensions = extensions;
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info.pt_serv_buf_size = 32 * 1024;
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if (lws_cmdline_option(argc, argv, "-c"))
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options |= 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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while (n >= 0 && !interrupted)
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n = lws_service(context, 1000);
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lws_context_destroy(context);
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lwsl_user("Completed %s\n", interrupted == 2 ? "OK" : "failed");
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return interrupted != 2;
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}
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