esp-idf/components/protocomm/include/transports/protocomm_httpd.h

104 lines
3.4 KiB
C

// Copyright 2018 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <protocomm.h>
#define PROTOCOMM_HTTPD_DEFAULT_CONFIG() { \
.port = 80, \
.stack_size = 4096, \
.task_priority = tskIDLE_PRIORITY + 5, \
}
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Config parameters for protocomm HTTP server
*/
typedef struct {
uint16_t port; /*!< Port on which the http server will listen */
/**
* Stack size of server task, adjusted depending
* upon stack usage of endpoint handler
*/
size_t stack_size;
unsigned task_priority; /*!< Priority of server task */
} protocomm_http_server_config_t; /*!< HTTP Server Configuration, if HTTP Server has not been started already */
/** Protocomm HTTPD Configuration Data */
typedef union {
/** HTTP Server Handle, if ext_handle_provided is set to true */
void *handle;
/** HTTP Server Configuration, if a server is not already active */
protocomm_http_server_config_t config;
} protocomm_httpd_config_data_t;
/**
* @brief Config parameters for protocomm HTTP server
*/
typedef struct {
/** Flag to indicate of an external HTTP Server Handle has been provided.
* In such as case, protocomm will use the same HTTP Server and not start
* a new one internally.
*/
bool ext_handle_provided;
/** Protocomm HTTPD Configuration Data */
protocomm_httpd_config_data_t data;
} protocomm_httpd_config_t;
/**
* @brief Start HTTPD protocomm transport
*
* This API internally creates a framework to allow endpoint registration and security
* configuration for the protocomm.
*
* @note This is a singleton. ie. Protocomm can have multiple instances, but only
* one instance can be bound to an HTTP transport layer.
*
* @param[in] pc Protocomm instance pointer obtained from protocomm_new()
* @param[in] config Pointer to config structure for initialising HTTP server
*
* @return
* - ESP_OK : Server started succefully
* - ESP_ERR_INVALID_ARG : Null arguments
* - ESP_ERR_NOT_SUPPORTED : Transport layer bound to another protocomm instance
* - ESP_ERR_INVALID_STATE : Transport layer already bound to this protocomm instance
* - ESP_ERR_NO_MEM : Memory allocation for server resource failed
* - ESP_ERR_HTTPD_* : HTTP server error on start
*/
esp_err_t protocomm_httpd_start(protocomm_t *pc, const protocomm_httpd_config_t *config);
/**
* @brief Stop HTTPD protocomm transport
*
* This API cleans up the HTTPD transport protocomm and frees all the handlers registered
* with the protocomm.
*
* @param[in] pc Same protocomm instance that was passed to protocomm_httpd_start()
*
* @return
* - ESP_OK : Server stopped succefully
* - ESP_ERR_INVALID_ARG : Null / incorrect protocomm instance pointer
*/
esp_err_t protocomm_httpd_stop(protocomm_t *pc);
#ifdef __cplusplus
}
#endif