116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
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/******************************************************************************
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*
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* Copyright (c) 2017-2019 by Löwenware Ltd
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* Please, refer LICENSE file for legal information
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*
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******************************************************************************/
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/**
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* @file hello-world.c
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* @author Ilja Kartašov <ik@lowenware.com>
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* @brief AISL usage example: Hello World
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*
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* @see https://lowenware.com/aisl/
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*/
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#include <stdio.h>
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#include <stdlib.h>
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/* Include library meta header */
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#include <aisl/aisl.h>
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#define DEFAULT_HTTP_PORT 8080 /**< Default HTTP server port */
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static bool
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hello_world(aisl_stream_t s)
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{
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aisl_status_t status;
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const char html[] =
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"<html>"
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"<head>"
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"<title>Hello World</title>"
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"</head>"
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"<body>"
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"<h1>Hello World</h1>"
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"<p>Powered by AISL</p>"
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"</body>"
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"</html>";
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status = aisl_response(s, AISL_HTTP_OK, sizeof(html)-1);
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if (status == AISL_SUCCESS)
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{
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if (aisl_write(s, html, sizeof(html)-1) != -1)
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{
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aisl_flush(s);
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}
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else
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aisl_reject(s);
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}
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return true; /**< do not propagate event anymore */
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}
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int
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main(int argc, char ** argv)
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{
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aisl_t aisl; /**< AISL instance pointer */
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aisl_status_t status; /**< AISL status code */
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uint16_t port = 0;
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/* Try to use first argument as a port number */
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if (argc > 1)
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port = strtoll(argv[1], NULL, 10);
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/* Fallback to default if not set or failed */
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if (port == 0)
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port = DEFAULT_HTTP_PORT;
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/* Initialize instance */
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if ( (aisl = aisl_new(NULL)) != NULL )
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{
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if (aisl_listen( aisl, "0.0.0.0", port ) != NULL)
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{
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aisl_callback_t callback = AISL_CALLBACK(hello_world);
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/* Set up request callback */
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status = aisl_set_callback( aisl
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, NULL
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, AISL_EVENT_STREAM_REQUEST
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, callback );
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/* if callback was set, launch application loop */
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if ( status == AISL_SUCCESS )
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{
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fprintf(stdout, "Entering main loop" );
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for(;;)
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{
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status = aisl_run_cycle(aisl);
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if ( status != AISL_SUCCESS )
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aisl_sleep(aisl, 500);
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}
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}
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else
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fprintf(stderr, "Failed to register callback" );
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aisl_free(aisl);
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}
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else
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fprintf(stderr, "Failed to initialize HTTP server" );
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}
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else
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fprintf(stderr, "Failed to initialize AISL");
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(void)argc;
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(void)argv;
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return 0;
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}
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