aisl/examples/hello-world.c

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2019-07-13 14:04:06 +02:00
/******************************************************************************
*
* Copyright (c) 2017-2019 by Löwenware Ltd
* Please, refer LICENSE file for legal information
*
******************************************************************************/
/**
* @file hello-world.c
* @author Ilja Kartašov <ik@lowenware.com>
* @brief AISL usage example: Hello World
*
* @see https://lowenware.com/aisl/
*/
#include <stdio.h>
#include <stdlib.h>
/* Include library meta header */
#include <aisl/aisl.h>
static void
hello_world(const struct aisl_evt *evt, void *p_ctx);
static const struct aisl_cfg_srv m_srv[] = {{
.host = "0.0.0.0",
.port = 8080,
.secure = false
}};
static const struct aisl_cfg m_cfg = {
AISL_CFG_DEFAULTS
, .srv = m_srv
, .srv_cnt = sizeof (m_srv) / sizeof (m_srv[0])
, .ssl = NULL
, .ssl_cnt = 0
, .callback = hello_world
, .p_ctx = NULL
};
static void
hello_world(const struct aisl_evt *evt, void *p_ctx)
{
AislStream s;
const char html[] =
"<html>"
"<head>"
"<title>Hello World</title>"
"</head>"
"<body>"
"<h1>Hello World</h1>"
"<p>Powered by AISL</p>"
"</body>"
"</html>";
fprintf(stdout, "Event: %s\n", aisl_event_to_string(evt->code) );
if (evt->code != AISL_EVENT_STREAM_REQUEST)
return;
s = evt->source;
if (aisl_response(s, AISL_HTTP_OK, sizeof (html)-1) == AISL_SUCCESS) {
if (aisl_write(s, html, sizeof (html)-1) != -1) {
aisl_flush(s);
return;
}
}
aisl_reject(s);
(void) p_ctx;
}
int
main(int argc, char **argv)
{
AislInstance aisl; /**< AISL instance pointer */
AislStatus status; /**< AISL status code */
/* Initialize instance */
if ( (aisl = aisl_new(&m_cfg)) != NULL ) {
/* launch application loop */
fprintf(stdout, "Entering main loop\n" );
for(;;) {
status = aisl_run_cycle(aisl);
if ( status != AISL_SUCCESS )
aisl_sleep(aisl, 500);
}
aisl_free(aisl);
} else {
fprintf(stderr, "Failed to initialize AISL\n");
}
return 0;
}