text: /*
   * 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
   *      CoAP implementation for the REST Engine.
   * \author
   *      Matthias Kovatsch <kovatsch@inf.ethz.ch>
   */
  
  #ifndef ER_COAP_ENGINE_H_
  #define ER_COAP_ENGINE_H_
  
  #ifdef CANNOTBUILD
  #include <sys/pt.h>
  #endif
  #include "er-coap.h"
  #include "er-coap-transactions.h"
  #include "er-coap-observe.h"
  #include "er-coap-separate.h"
  #include "er-coap-observe-client.h"
  #include "er-coap-context.h"
  #include "er-coap.h"
  
  #include "rest-engine.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #define SERVER_LISTEN_PORT      UIP_HTONS(COAP_SERVER_PORT)
  
  typedef coap_packet_t rest_request_t;
  typedef coap_packet_t rest_response_t;
  
  void coap_init_engine(void);
  int coap_engine_receive(coap_context_t *coap_context);
  coap_context_t *coap_init_server(uip_ipaddr_t *server_addr,
  				 uint16_t server_port,
  				 uip_ipaddr_t *peer_addr,
  				 uint16_t peer_port);
  void coap_set_service_callback(service_callback_t callback);
  rest_resource_flags_t coap_get_rest_method(void *packet);
  /*---------------------------------------------------------------------------*/
  /*- Client Part -------------------------------------------------------------*/
  /*---------------------------------------------------------------------------*/
  #ifdef CANNOTBUILD
  struct request_state_t {
    struct pt pt;
    struct process *process;
    coap_transaction_t *transaction;
    coap_packet_t *response;
    uint32_t block_num;
  };
  typedef void (*restful_response_handler)(void *response);
  
  PT_THREAD(coap_blocking_request
              (struct request_state_t *state, process_event_t ev,
               coap_context_t *coap_ctx,
              uip_ipaddr_t *remote_ipaddr, uint16_t remote_port,
              coap_packet_t *request,
  			restful_response_handler request_callback));
  #endif
  #define COAP_BLOCKING_REQUEST(server_addr, server_port, request, chunk_handler) \
    { \
      static struct request_state_t request_state; \
      PT_SPAWN(process_pt, &request_state.pt, \
               coap_blocking_request(&request_state, ev, COAP_CONTEXT_NONE, \
                                     server_addr, server_port, \
                                     request, chunk_handler) \
               ); \
    }
  /*---------------------------------------------------------------------------*/
  
  #ifdef __cplusplus
  }
  #endif
  #endif /* ER_COAP_ENGINE_H_ */
  