sn_coap_header_internal.h

00001 /*
00002  * Copyright (c) 2011-2015 ARM Limited. All rights reserved.
00003  * SPDX-License-Identifier: Apache-2.0
00004  * Licensed under the Apache License, Version 2.0 (the License); you may
00005  * not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  * http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an AS IS BASIS, WITHOUT
00012  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00017 /**
00018  * \file sn_coap_header_internal.h
00019  *
00020  * \brief Header file for CoAP Header part
00021  *
00022  */
00023 
00024 #ifdef __cplusplus
00025 extern "C" {
00026 #endif
00027 
00028 #ifndef SN_COAP_HEADER_INTERNAL_H_
00029 #define SN_COAP_HEADER_INTERNAL_H_
00030 
00031 
00032 /* * * * * * * * * * * */
00033 /* * * * DEFINES * * * */
00034 /* * * * * * * * * * * */
00035 
00036 #define COAP_VERSION                                COAP_VERSION_1 /* Tells which IETF CoAP specification version the CoAP message supports. */
00037 /* This value is written to CoAP message header part. */
00038 
00039 /* CoAP Header defines */
00040 #define COAP_HEADER_LENGTH                          4   /* Fixed Header length of CoAP message as bytes */
00041 #define COAP_HEADER_VERSION_MASK                    0xC0
00042 #define COAP_HEADER_MSG_TYPE_MASK                   0x30
00043 #define COAP_HEADER_TOKEN_LENGTH_MASK               0x0F
00044 #define COAP_HEADER_MSG_ID_MSB_SHIFT                8
00045 
00046 /* CoAP Options defines */
00047 #define COAP_OPTIONS_OPTION_NUMBER_SHIFT            4
00048 
00049 /* * * * * * * * * * * * * * */
00050 /* * * * ENUMERATIONS  * * * */
00051 /* * * * * * * * * * * * * * */
00052 
00053 /* * * * * * * * * * * * * */
00054 /* * * * STRUCTURES  * * * */
00055 /* * * * * * * * * * * * * */
00056 
00057 /**
00058  * \brief This structure is returned by sn_coap_exec() for sending
00059  */
00060 typedef struct sn_nsdl_transmit_ {
00061     sn_nsdl_addr_s         *dst_addr_ptr;
00062 
00063     sn_nsdl_capab_e         protocol;
00064 
00065     uint16_t                packet_len;
00066     uint8_t                *packet_ptr;
00067 } sn_nsdl_transmit_s;
00068 
00069 /* * * * * * * * * * * * * * * * * * * * * * */
00070 /* * * * EXTERNAL FUNCTION PROTOTYPES  * * * */
00071 /* * * * * * * * * * * * * * * * * * * * * * */
00072 extern int8_t           sn_coap_header_validity_check(sn_coap_hdr_s *src_coap_msg_ptr, coap_version_e coap_version);
00073 
00074 #endif /* SN_COAP_HEADER_INTERNAL_H_ */
00075 
00076 #ifdef __cplusplus
00077 }
00078 #endif