mirror of
https://github.com/espressif/esp-idf
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40 lines
982 B
C
40 lines
982 B
C
/*
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* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __ESP_NETDB_H__
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#define __ESP_NETDB_H__
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#include "sdkconfig.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Custom getaddrinfo() wrapper for lwIP that handles AF_UNSPEC correctly.
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*
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* Resolves both IPv4 and IPv6 addresses when AF_UNSPEC is specified. Works
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* even if only one protocol (IPv4 or IPv6) is enabled in lwIP. Merges results
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* if both protocols are available.
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*
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* @return 0 on success, or an error code on failure.
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* - `EAI_FAMILY`: Address family not supported.
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*
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* @note Caller must free the result list with freeaddrinfo().
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*
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* @see getaddrinfo(), freeaddrinfo()
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*/
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#if CONFIG_LWIP_USE_ESP_GETADDRINFO
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int esp_getaddrinfo(const char *nodename, const char *servname,
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const struct addrinfo *hints, struct addrinfo **res);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // __ESP_NETDB_H__
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