Merge branch 'bugfix/fix_resetting_redirect_counter' into 'master'

fix: reset redirect counter for using same handler

Closes IDFGH-12636 and IDFGH-12667

See merge request espressif/esp-idf!30395

components/esp_http_client/esp_http_client.c

@@ -962,9 +962,19 @@ esp_err_t esp_http_client_set_redirection(esp_http_client_handle_t client)
     return err;
 }
 
+esp_err_t esp_http_client_reset_redirect_counter(esp_http_client_handle_t client)
+{
+    if (client == NULL) {
+        return ESP_ERR_INVALID_ARG;
+    }
+    client->redirect_counter = 0;
+    return ESP_OK;
+}
+
 static esp_err_t esp_http_check_response(esp_http_client_handle_t client)
 {
     if (client->response->status_code >= HttpStatus_Ok && client->response->status_code < HttpStatus_MultipleChoices) {
+        client->redirect_counter = 0;
         return ESP_OK;
     }
     if (client->redirect_counter >= client->max_redirection_count) {

components/esp_http_client/include/esp_http_client.h

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -36,7 +36,7 @@ typedef enum {
     HTTP_EVENT_ERROR = 0,       /*!< This event occurs when there are any errors during execution */
     HTTP_EVENT_ON_CONNECTED,    /*!< Once the HTTP has been connected to the server, no data exchange has been performed */
     HTTP_EVENT_HEADERS_SENT,     /*!< After sending all the headers to the server */
-    HTTP_EVENT_HEADER_SENT = HTTP_EVENT_HEADERS_SENT, /*!< This header has been kept for backward compatability
+    HTTP_EVENT_HEADER_SENT = HTTP_EVENT_HEADERS_SENT, /*!< This header has been kept for backward compatibility
                                                            and will be deprecated in future versions esp-idf */
     HTTP_EVENT_ON_HEADER,       /*!< Occurs when receiving each header sent from the server */
     HTTP_EVENT_ON_DATA,         /*!< Occurs when receiving data from the server, possibly multiple portions of the packet */
@@ -125,7 +125,7 @@ typedef enum {
 typedef enum {
     HTTP_AUTH_TYPE_NONE = 0,    /*!< No authention */
     HTTP_AUTH_TYPE_BASIC,       /*!< HTTP Basic authentication */
-    HTTP_AUTH_TYPE_DIGEST,      /*!< HTTP Disgest authentication */
+    HTTP_AUTH_TYPE_DIGEST,      /*!< HTTP Digest authentication */
 } esp_http_client_auth_type_t;
 
 /**
@@ -249,7 +249,7 @@ esp_http_client_handle_t esp_http_client_init(const esp_http_client_config_t *co
  *             must be set while making a call to esp_http_client_init() API.
  *             You can do any amount of calls to esp_http_client_perform while using the same esp_http_client_handle_t. The underlying connection may be kept open if the server allows it.
  *             If you intend to transfer more than one file, you are even encouraged to do so.
- *             esp_http_client will then attempt to re-use the same connection for the following transfers, thus making the operations faster, less CPU intense and using less network resources.
+ *             esp_http_client will then attempt to reuse the same connection for the following transfers, thus making the operations faster, less CPU intense and using less network resources.
  *             Just note that you will have to use `esp_http_client_set_**` between the invokes to set options for the following esp_http_client_perform.
  *
  * @note       You must never call this function simultaneously from two places using the same client handle.
@@ -612,7 +612,7 @@ esp_http_client_transport_t esp_http_client_get_transport_type(esp_http_client_h
  * @brief      Set redirection URL.
  *             When received the 30x code from the server, the client stores the redirect URL provided by the server.
  *             This function will set the current URL to redirect to enable client to execute the redirection request.
- *             When `disable_auto_redirect` is set, the client will not call this function but the event `HTTP_EVENT_REDIRECT` will be dispatched giving the user contol over the redirection event.
+ *             When `disable_auto_redirect` is set, the client will not call this function but the event `HTTP_EVENT_REDIRECT` will be dispatched giving the user control over the redirection event.
  *
  * @param[in]  client  The esp_http_client handle
  *
@@ -622,6 +622,18 @@ esp_http_client_transport_t esp_http_client_get_transport_type(esp_http_client_h
  */
 esp_err_t esp_http_client_set_redirection(esp_http_client_handle_t client);
 
+/**
+ * @brief      Reset the redirection counter.
+ *             This is useful to reset redirect counter in cases where the same handle is used for multiple requests.
+ *
+ * @param[in]  client  The esp_http_client handle
+ *
+ * @return
+ *     - ESP_OK
+ *     - ESP_ERR_INVALID_ARG
+ */
+esp_err_t esp_http_client_reset_redirect_counter(esp_http_client_handle_t client);
+
 /**
  * @brief      On receiving a custom authentication header, this API can be invoked to set the
  *             authentication information from the header. This API can be called from the event
@@ -676,7 +688,7 @@ int esp_http_client_read_response(esp_http_client_handle_t client, char *buffer,
 /**
  * @brief       Process all remaining response data
  *              This uses an internal buffer to repeatedly receive, parse, and discard response data until complete data is processed.
- *              As no additional user-supplied buffer is required, this may be preferrable to `esp_http_client_read_response` in situations where the content of the response may be ignored.
+ *              As no additional user-supplied buffer is required, this may be preferable to `esp_http_client_read_response` in situations where the content of the response may be ignored.
  *
  * @param[in]  client  The esp_http_client handle
  * @param      len     Length of data discarded

components/esp_http_server/src/util/ctrl_sock.c

@@ -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;