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/*
This file is part of libmicrohttpd
Copyright (C) 2007, 2008 Christian Grothoff (and other contributing authors)
Copyright (C) 2016-2022 Evgeny Grin (Karlson2k)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file minimal_example.c
* @brief minimal example for how to generate an infinite stream with libmicrohttpd
* @author Christian Grothoff
* @author Karlson2k (Evgeny Grin)
*/
#include "platform.h"
#include <microhttpd.h>
static ssize_t
data_generator (void *cls, uint64_t pos, char *buf, size_t max)
{
(void) cls; /* Unused. Silent compiler warning. */
(void) pos; /* Unused. Silent compiler warning. */
if (max < 80)
return 0;
memset (buf, 'A', max - 1);
buf[79] = '\n';
return 80;
}
static enum MHD_Result
ahc_echo (void *cls,
struct MHD_Connection *connection,
const char *url,
const char *method,
const char *version,
const char *upload_data, size_t *upload_data_size, void **req_cls)
{
static int aptr;
struct MHD_Response *response;
enum MHD_Result ret;
(void) cls; /* Unused. Silent compiler warning. */
(void) url; /* Unused. Silent compiler warning. */
(void) version; /* Unused. Silent compiler warning. */
(void) upload_data; /* Unused. Silent compiler warning. */
(void) upload_data_size; /* Unused. Silent compiler warning. */
if (0 != strcmp (method, "GET"))
return MHD_NO; /* unexpected method */
if (&aptr != *req_cls)
{
/* do never respond on first call */
*req_cls = &aptr;
return MHD_YES;
}
*req_cls = NULL; /* reset when done */
response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
80,
&data_generator, NULL, NULL);
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
return ret;
}
int
main (int argc, char *const *argv)
{
struct MHD_Daemon *d;
int port;
if (argc != 2)
{
printf ("%s PORT\n", argv[0]);
return 1;
}
port = atoi (argv[1]);
if ( (1 > port) || (port > 65535) )
{
fprintf (stderr,
"Port must be a number between 1 and 65535.\n");
return 1;
}
d = MHD_start_daemon (MHD_USE_AUTO | MHD_USE_THREAD_PER_CONNECTION
| MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
(uint16_t) port,
NULL, NULL, &ahc_echo, NULL, MHD_OPTION_END);
if (d == NULL)
return 1;
(void) getc (stdin);
MHD_stop_daemon (d);
return 0;
}
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