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fix: Add warning to enable LWIP_NETIF_LOOPBACK to use control socket API

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Closes https://github.com/espressif/esp-idf/issues/13659
This commit is contained in:
Harshit Malpani 2024-05-06 14:17:36 +05:30
parent 856a299ba8
commit eb8dad2fa6
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GPG Key ID: 441A8ACC7853D493
1 changed files with 11 additions and 2 deletions
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13
components/esp_http_server/src/util/ctrl_sock.c
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@ -1,5 +1,5 @@
/*
* SPDX-FileCopyrightText: 2018-2021 Espressif Systems (Shanghai) CO LTD
* SPDX-FileCopyrightText: 2018-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
@ -11,7 +11,7 @@
#include <netinet/in.h>
#include <arpa/inet.h>
#include "sdkconfig.h"
#include "esp_log.h"
#include "ctrl_sock.h"
#if CONFIG_IDF_TARGET_LINUX
@ -22,11 +22,20 @@
#define IPV6_ENABLED CONFIG_LWIP_IPV6
#endif // !CONFIG_IDF_TARGET_LINUX
#if !CONFIG_LWIP_NETIF_LOOPBACK
static const char *TAG = "esp_http_server";
#endif
/* Control socket, because in some network stacks select can't be woken up any
* other way
*/
int cs_create_ctrl_sock(int port)
{
#if !CONFIG_LWIP_NETIF_LOOPBACK
ESP_LOGE(TAG, "Please enable LWIP_NETIF_LOOPBACK for %s API", __func__);
return -1;
#endif
int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (fd < 0) {
return -1;