kopia lustrzana https://github.com/espressif/esp-idf
97 wiersze
3.1 KiB
C
97 wiersze
3.1 KiB
C
/* Keep Alive engine for wss server example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#pragma once
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#define KEEP_ALIVE_CONFIG_DEFAULT() \
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{ \
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.max_clients = 10, \
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.task_stack_size = 2048, \
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.task_prio = tskIDLE_PRIORITY+1, \
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.keep_alive_period_ms = 5000, \
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.not_alive_after_ms = 10000, \
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}
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struct wss_keep_alive_storage;
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typedef struct wss_keep_alive_storage* wss_keep_alive_t;
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typedef bool (*wss_check_client_alive_cb_t)(wss_keep_alive_t h, int fd);
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typedef bool (*wss_client_not_alive_cb_t)(wss_keep_alive_t h, int fd);
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/**
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* @brief Confiuration struct
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*/
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typedef struct {
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size_t max_clients; /*!< max number of clients */
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size_t task_stack_size; /*!< stack size of the created task */
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size_t task_prio; /*!< priority of the created task */
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size_t keep_alive_period_ms; /*!< check every client after this time */
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size_t not_alive_after_ms; /*!< consider client not alive after this time */
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wss_check_client_alive_cb_t check_client_alive_cb; /*!< callback function to check if client is alive */
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wss_client_not_alive_cb_t client_not_alive_cb; /*!< callback function to notify that the client is not alive */
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void *user_ctx; /*!< user context available in the keep-alive handle */
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} wss_keep_alive_config_t;
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/**
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* @brief Adds a new client to internal set of clients to keep an eye on
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*
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* @param h keep-alive handle
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* @param fd socket file descriptor for this client
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* @return ESP_OK on success
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*/
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esp_err_t wss_keep_alive_add_client(wss_keep_alive_t h, int fd);
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/**
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* @brief Removes this client from the set
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*
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* @param h keep-alive handle
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* @param fd socket file descriptor for this client
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* @return ESP_OK on success
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*/
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esp_err_t wss_keep_alive_remove_client(wss_keep_alive_t h, int fd);
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/**
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* @brief Notify that this client is alive
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*
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* @param h keep-alive handle
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* @param fd socket file descriptor for this client
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* @return ESP_OK on success
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*/
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esp_err_t wss_keep_alive_client_is_active(wss_keep_alive_t h, int fd);
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/**
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* @brief Starts keep-alive engine
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*
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* @param config keep-alive configuration
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* @return keep alive handle
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*/
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wss_keep_alive_t wss_keep_alive_start(wss_keep_alive_config_t *config);
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/**
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* @brief Stops keep-alive engine
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*
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* @param h keep-alive handle
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*/
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void wss_keep_alive_stop(wss_keep_alive_t h);
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/**
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* @brief Sets user defined context
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*
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* @param h keep-alive handle
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* @param ctx user context
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*/
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void wss_keep_alive_set_user_ctx(wss_keep_alive_t h, void *ctx);
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/**
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* @brief Gets user defined context
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*
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* @param h keep-alive handle
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* @return ctx user context
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*/
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void* wss_keep_alive_get_user_ctx(wss_keep_alive_t h);
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