| /* |
| * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich |
| * 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 |
| * ETSI Plugtest resource |
| * \author |
| * Matthias Kovatsch <kovatsch@inf.ethz.ch> |
| */ |
| |
| #define DEBUG DEBUG_NULL |
| |
| #include <string.h> |
| #include "rest-engine.h" |
| #include "er-coap.h" |
| #include "er-coap-transactions.h" |
| #include "er-coap-separate.h" |
| #include "er-plugtest.h" |
| |
| static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); |
| static void res_resume_handler(void); |
| |
| PERIODIC_RESOURCE(res_plugtest_separate, |
| "title=\"Resource which cannot be served immediately and which cannot be acknowledged in a piggy-backed way\"", |
| res_get_handler, |
| NULL, |
| NULL, |
| NULL, |
| 3 * CLOCK_SECOND, |
| res_resume_handler); |
| |
| /* A structure to store the required information */ |
| typedef struct application_separate_store { |
| /* Provided by Erbium to store generic request information such as remote address and token. */ |
| coap_separate_t request_metadata; |
| /* Add fields for addition information to be stored for finalizing, e.g.: */ |
| char buffer[MAX_PLUGFEST_PAYLOAD]; |
| } application_separate_store_t; |
| |
| static uint8_t separate_active = 0; |
| static application_separate_store_t separate_store[1]; |
| |
| void |
| res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) |
| { |
| coap_packet_t *const coap_req = (coap_packet_t *)request; |
| |
| PRINTF("/separate "); |
| if(separate_active) { |
| PRINTF("REJECTED "); |
| coap_separate_reject(); |
| } else { |
| PRINTF("STORED "); |
| separate_active = 1; |
| |
| /* Take over and skip response by engine. */ |
| coap_separate_accept(request, &separate_store->request_metadata); |
| /* Be aware to respect the Block2 option, which is also stored in the coap_separate_t. */ |
| |
| snprintf(separate_store->buffer, MAX_PLUGFEST_PAYLOAD, |
| "Type: %u\nCode: %u\nMID: %u", coap_req->type, coap_req->code, |
| coap_req->mid); |
| } |
| |
| PRINTF("(%s %u)\n", coap_req->type == COAP_TYPE_CON ? "CON" : "NON", coap_req->mid); |
| } |
| static void |
| res_resume_handler() |
| { |
| if(separate_active) { |
| PRINTF("/separate "); |
| coap_transaction_t *transaction = NULL; |
| if((transaction = coap_new_transaction(separate_store->request_metadata.mid, |
| NULL, |
| &separate_store->request_metadata.addr, |
| separate_store->request_metadata.port))) { |
| PRINTF( |
| "RESPONSE (%s %u)\n", separate_store->request_metadata.type == COAP_TYPE_CON ? "CON" : "NON", separate_store->request_metadata.mid); |
| |
| coap_packet_t response[1]; /* This way the packet can be treated as pointer as usual. */ |
| |
| /* Restore the request information for the response. */ |
| coap_separate_resume(response, &separate_store->request_metadata, CONTENT_2_05); |
| |
| REST.set_header_content_type(response, REST.type.TEXT_PLAIN); |
| coap_set_payload(response, separate_store->buffer, |
| strlen(separate_store->buffer)); |
| |
| /* |
| * Be aware to respect the Block2 option, which is also stored in the coap_separate_t. |
| * As it is a critical option, this example resource pretends to handle it for compliance. |
| */ |
| coap_set_header_block2(response, |
| separate_store->request_metadata.block2_num, 0, |
| separate_store->request_metadata.block2_size); |
| |
| /* Warning: No check for serialization error. */ |
| transaction->packet_len = coap_serialize_message(response, |
| transaction->packet); |
| coap_send_transaction(transaction); |
| /* The engine will clear the transaction (right after send for NON, after acked for CON). */ |
| |
| separate_active = 0; |
| } else { |
| PRINTF("ERROR (transaction)\n"); |
| } |
| } /* if (separate_active) */ |
| } |