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50 lines
1.4 KiB
C
50 lines
1.4 KiB
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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#include <netdb.h>
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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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{
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struct addrinfo hints_copy = *hints;
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struct addrinfo *res4 = NULL, *res6 = NULL;
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int ret4, ret6;
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if (hints->ai_family == AF_UNSPEC) {
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// Attempt to get IPv4 addresses
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hints_copy.ai_family = AF_INET;
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ret4 = lwip_getaddrinfo(nodename, servname, &hints_copy, &res4);
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// Attempt to get IPv6 addresses
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hints_copy.ai_family = AF_INET6;
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ret6 = lwip_getaddrinfo(nodename, servname, &hints_copy, &res6);
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// Handle results
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if (ret4 != 0 && ret6 != 0) {
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return ret4; // Both calls failed, return the first error code
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}
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*res = res4 ? res4 : res6; // Start with the non-NULL result
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if (res4 && res6) {
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// Append IPv6 list to the end of IPv4 list
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struct addrinfo *last = res4;
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while (last->ai_next) {
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last = last->ai_next;
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}
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last->ai_next = res6;
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}
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return ERR_OK; // Success
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} else if ((hints->ai_family == AF_INET) || (hints->ai_family == AF_INET6)) {
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return lwip_getaddrinfo(nodename, servname, hints, res);
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}
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// Handle unsupported cases
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return EAI_FAMILY;
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}
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