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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/ipv6_stack/include/dns6_api.h')
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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/ipv6_stack/include/dns6_api.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/ipv6_stack/include/dns6_api.h new file mode 100644 index 0000000..0f6ecd9 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/ipv6_stack/include/dns6_api.h @@ -0,0 +1,173 @@ +/** + * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA + * + * 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, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, 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 Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA 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. + * + */ +/** @file dns6_api.h + * + * @defgroup iot_dns6 DNS Application Interface for Nordic's IPv6 stack + * @ingroup iot_sdk_stack + * @{ + * @brief Domain Name System module provides implementation of DNS6 service. + * + */ + +#ifndef DNS6_H__ +#define DNS6_H__ + +#include "sdk_config.h" +#include "sdk_common.h" +#include "ipv6_api.h" +#include "iot_timer.h" + +#ifdef __cplusplus +extern "C" { +#endif + +/** @brief DNS Server parameter. */ +typedef struct +{ + ipv6_addr_t addr; /**< The IPv6 address of the DNS Server. */ + uint16_t port; /**< The default UDP port of the DNS Server. */ +} dns6_server_param_t; + + +/**@brief Initialization parameters type. */ +typedef struct +{ + uint16_t local_src_port; /**< The local UDP port for reception the DNS responses. */ + dns6_server_param_t dns_server; /**< Parameters of the DNS Server. */ +} dns6_init_t; + + +/** + * @brief DNS event receive callback. + * + * @details API used to notify the application of DNS Response on specific hostname or of an error + * during resolving process. The process_result parameter indicates whether the DNS module + * was successfully processed. If the received DNS Response is malformed in a way that + * allow to assign response with specific callback (e.g. timeout occurs or hostname is not + * found), information about error is still notified to the application. The application + * should check process_result and number of IPv6 address before reading them. + * + * @param[in] process_result Notifies the application if the DNS module was processed successfully + * or if an error occurred, for example DNS server is unreachable. + * @param[in] p_hostname Identifies hostname (URL string) that was requested to bee resolved, + * e.g. "example.com". + * @param[in] p_addr Pointer to the IPv6 addresses being resolved for given hostname. In + * case addr_count variable is 0, p_addr gets NULL value and should not + * be used. + * @param[in] addr_count Number of IPv6 addresses being successfully resolved. + * + * @retval None. + */ +typedef void (* dns6_evt_handler_t) (uint32_t process_result, + const char * p_hostname, + ipv6_addr_t * p_addr, + uint16_t addr_count); + +/** + * @brief Function for initializing DNS6 module. + * + * @param[in] p_dns_init Initialization structure for DNS client. Should not be NULL. + * + * @note DNS protocol module uses UDP transport layer, therefore one UDP socket is allocated + * inside function and uses for further communication. + * + * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason + * for failure. + */ +uint32_t dns6_init(const dns6_init_t * p_dns_init); + + +/** + * @brief Function for uninitializing DNS6 module. + * + * @note Apart of DNS specific functionality, function frees previously allocated UDP socket. + * Function removes any pending queries from the sending queue, so registered user + * callbacks will not be executed. + * + * @retval NRF_SUCCESS on successful execution of procedure, else an error code indicating reason + * for failure. + */ +uint32_t dns6_uninit(void); + + +/** + * @brief Function for querying given URL string to DNS server, in order to get IPv6 address of + * given hostname. + * + * @param[in] p_hostname Identifies hostname (URL string) to be find, e.g. "example.com". Should + * not be NULL. + * @param[in] evt_handler Callback that is called once response is received, timeout occurred or + * internal error was detected. Should not be NULL. + * + * @note Function sends DNS Query to DNS Server to obtain all AAAA records (with IPv6 address) + * assigned to given hostname. In case DNS Server replies with more that one AAAA records + * DNS module call user defined evt_handler with addr_count indicates number of addresses. + * + * @retval NRF_SUCCESS on successful execution of procedure. + * @retval IOT_DNS6_ERR_BASE | NRF_ERROR_NO_MEM if there is no place in pending queries' queue. + * @retval IOT_PBUFFER_ERR_BASE | NRF_ERROR_NO_MEM if there is no memory for hostname allocation. + * @retval NRF_ERROR_MEMORY_MANAGER_ERR_BASE | NRF_ERROR_NO_MEM if there is no memory for packet allocation. + * @retval UDP_INTERFACE_NOT_READY if interface is not ready for sending packets e.g. interface is + * down. + * @retval Other errors indicates reason of failure. + */ +uint32_t dns6_query(const char * p_hostname, dns6_evt_handler_t evt_handler); + + +/**@brief Function for performing retransmissions of DNS queries. + * + * @note DNS module implements the retransmission mechanism by invoking this function periodically. + * So that method has to be added to IoT Timer client list and has to be called with minimum of + * DNS6_RETRANSMISSION_INTERVAL resolution. + * + * @param[in] wall_clock_value The value of the wall clock that triggered the callback. + * + * @retval None. + */ +void dns6_timeout_process(iot_timer_time_in_ms_t wall_clock_value); + + +#ifdef __cplusplus +} +#endif + +#endif //DNS6_H__ + +/**@} */ |