31b2702387
esp_netif_init() returns standard esp_err_t error code (unlike tcpip_adapter init), so shall be checked for the return value Also to make the initialization code more consistent.
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/* Simple HTTP + SSL 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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#include <esp_wifi.h>
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#include <esp_event.h>
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#include <esp_log.h>
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#include <esp_system.h>
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#include <nvs_flash.h>
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#include <sys/param.h>
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#include "esp_netif.h"
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#include "esp_eth.h"
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#include "protocol_examples_common.h"
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#include <esp_https_server.h>
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/* A simple example that demonstrates how to create GET and POST
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* handlers and start an HTTPS server.
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*/
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static const char *TAG = "example";
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/* An HTTP GET handler */
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static esp_err_t root_get_handler(httpd_req_t *req)
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{
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httpd_resp_set_type(req, "text/html");
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httpd_resp_send(req, "<h1>Hello Secure World!</h1>", -1); // -1 = use strlen()
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return ESP_OK;
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}
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static const httpd_uri_t root = {
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.uri = "/",
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.method = HTTP_GET,
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.handler = root_get_handler
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};
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static httpd_handle_t start_webserver(void)
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{
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httpd_handle_t server = NULL;
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// Start the httpd server
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ESP_LOGI(TAG, "Starting server");
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httpd_ssl_config_t conf = HTTPD_SSL_CONFIG_DEFAULT();
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extern const unsigned char cacert_pem_start[] asm("_binary_cacert_pem_start");
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extern const unsigned char cacert_pem_end[] asm("_binary_cacert_pem_end");
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conf.cacert_pem = cacert_pem_start;
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conf.cacert_len = cacert_pem_end - cacert_pem_start;
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extern const unsigned char prvtkey_pem_start[] asm("_binary_prvtkey_pem_start");
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extern const unsigned char prvtkey_pem_end[] asm("_binary_prvtkey_pem_end");
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conf.prvtkey_pem = prvtkey_pem_start;
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conf.prvtkey_len = prvtkey_pem_end - prvtkey_pem_start;
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esp_err_t ret = httpd_ssl_start(&server, &conf);
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if (ESP_OK != ret) {
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ESP_LOGI(TAG, "Error starting server!");
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return NULL;
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}
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// Set URI handlers
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ESP_LOGI(TAG, "Registering URI handlers");
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httpd_register_uri_handler(server, &root);
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return server;
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}
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static void stop_webserver(httpd_handle_t server)
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{
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// Stop the httpd server
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httpd_ssl_stop(server);
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}
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static void disconnect_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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httpd_handle_t* server = (httpd_handle_t*) arg;
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if (*server) {
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stop_webserver(*server);
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*server = NULL;
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}
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}
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static void connect_handler(void* arg, esp_event_base_t event_base,
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int32_t event_id, void* event_data)
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{
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httpd_handle_t* server = (httpd_handle_t*) arg;
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if (*server == NULL) {
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*server = start_webserver();
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}
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}
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void app_main(void)
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{
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static httpd_handle_t server = NULL;
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ESP_ERROR_CHECK(nvs_flash_init());
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ESP_ERROR_CHECK(esp_netif_init());
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ESP_ERROR_CHECK(esp_event_loop_create_default());
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/* Register event handlers to start server when Wi-Fi or Ethernet is connected,
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* and stop server when disconnection happens.
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*/
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#ifdef CONFIG_EXAMPLE_CONNECT_WIFI
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP, &connect_handler, &server));
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ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, WIFI_EVENT_STA_DISCONNECTED, &disconnect_handler, &server));
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#endif // CONFIG_EXAMPLE_CONNECT_WIFI
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#ifdef CONFIG_EXAMPLE_CONNECT_ETHERNET
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ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_ETH_GOT_IP, &connect_handler, &server));
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ESP_ERROR_CHECK(esp_event_handler_register(ETH_EVENT, ETHERNET_EVENT_DISCONNECTED, &disconnect_handler, &server));
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#endif // CONFIG_EXAMPLE_CONNECT_ETHERNET
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/* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.
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* Read "Establishing Wi-Fi or Ethernet Connection" section in
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* examples/protocols/README.md for more information about this function.
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*/
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ESP_ERROR_CHECK(example_connect());
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}
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