111 lines
4.3 KiB
C
111 lines
4.3 KiB
C
/*
|
|
* Copyright (c) 2014, Lars Schmertmann <SmallLars@t-online.de>.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the Institute nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Example resource
|
|
* \author
|
|
* Lars Schmertmann <SmallLars@t-online.de>
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "rest-engine.h"
|
|
#include "er-coap-block1.h"
|
|
#include "er-coap-separate.h"
|
|
#include "er-coap-transactions.h"
|
|
|
|
static void res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset);
|
|
SEPARATE_RESOURCE(res_b1_sep_b2, "title=\"Block1 + Separate + Block2 demo\"", NULL, res_post_handler, NULL, NULL, NULL);
|
|
|
|
#define MAX_DATA_LEN 256
|
|
|
|
static uint8_t big_msg[MAX_DATA_LEN];
|
|
static size_t big_msg_len = 0;
|
|
static coap_separate_t request_metadata;
|
|
|
|
static void
|
|
res_post_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset)
|
|
{
|
|
/* Example allows only one request on time. There are no checks for multiply access !!! */
|
|
if(*offset == 0) {
|
|
/* Incoming Data */
|
|
if(coap_block1_handler(request, response, big_msg, &big_msg_len, MAX_DATA_LEN)) {
|
|
/* More Blocks will follow. Example waits for
|
|
* the last block and stores data into big_msg.
|
|
*/
|
|
return;
|
|
}
|
|
/* Last block was received. */
|
|
coap_separate_accept(request, &request_metadata);
|
|
|
|
/* Need Time for calculation now */
|
|
int i;
|
|
for(i = 0; i <= 4096; i++) {
|
|
printf("\r%4u\r", i);
|
|
}
|
|
printf("\n");
|
|
|
|
/* Send first block */
|
|
coap_transaction_t *transaction = NULL;
|
|
if((transaction = coap_new_transaction(request_metadata.mid, &request_metadata.addr, request_metadata.port))) {
|
|
coap_packet_t resp[1]; /* This way the packet can be treated as pointer as usual. */
|
|
|
|
/* Restore the request information for the response. */
|
|
coap_separate_resume(resp, &request_metadata, CONTENT_2_05);
|
|
|
|
/* Set payload and block info */
|
|
coap_set_payload(resp, big_msg, big_msg_len > request_metadata.block2_size ? request_metadata.block2_size : big_msg_len);
|
|
if(big_msg_len > request_metadata.block2_size) {
|
|
coap_set_header_block2(resp, 0, 1, request_metadata.block2_size);
|
|
}
|
|
|
|
/* Warning: No check for serialization error. */
|
|
transaction->packet_len = coap_serialize_message(resp, transaction->packet);
|
|
coap_send_transaction(transaction);
|
|
}
|
|
} else {
|
|
/* request for more blocks */
|
|
if(*offset >= big_msg_len) {
|
|
coap_set_status_code(response, BAD_OPTION_4_02);
|
|
coap_set_payload(response, "BlockOutOfScope", 15);
|
|
return;
|
|
}
|
|
|
|
memcpy(buffer, big_msg + *offset, 32);
|
|
if(big_msg_len - *offset < preferred_size) {
|
|
preferred_size = big_msg_len - *offset;
|
|
*offset = -1;
|
|
} else {
|
|
*offset += preferred_size;
|
|
}
|
|
coap_set_payload(response, buffer, preferred_size);
|
|
}
|
|
}
|