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- /*
- * server.c
- *
- * Created on: 21 Apr 2020
- * Author: Chris
- */
-
- #include "server.h"
-
- static const char *TAG = "server";
- char cur_value_str[255] = "No measurements yet!";
-
- void server_set_values(int32_t temp_raw, uint32_t pressure_raw, uint32_t humidity_raw,
- int32_t temp2_raw, uint32_t pressure2_raw, uint32_t humidity2_raw)
- {
- sprintf(cur_value_str, "<html><body><p>%d %d %d</p><p>%d %d %d</p></body></html>", temp_raw, pressure_raw, humidity_raw, temp2_raw, pressure2_raw, humidity2_raw);
- }
-
- static esp_err_t get_handler(httpd_req_t *req)
- {
- char* buf;
- size_t buf_len;
-
- /* Get header value string length and allocate memory for length + 1,
- * extra byte for null termination */
- buf_len = httpd_req_get_hdr_value_len(req, "Host") + 1;
- if (buf_len > 1) {
- buf = malloc(buf_len);
- /* Copy null terminated value string into buffer */
- if (httpd_req_get_hdr_value_str(req, "Host", buf, buf_len) == ESP_OK) {
- ESP_LOGI(TAG, "Found header => Host: %s", buf);
- }
- free(buf);
- }
-
- // buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-2") + 1;
- // if (buf_len > 1) {
- // buf = malloc(buf_len);
- // if (httpd_req_get_hdr_value_str(req, "Test-Header-2", buf, buf_len) == ESP_OK) {
- // ESP_LOGI(TAG, "Found header => Test-Header-2: %s", buf);
- // }
- // free(buf);
- // }
- //
- // buf_len = httpd_req_get_hdr_value_len(req, "Test-Header-1") + 1;
- // if (buf_len > 1) {
- // buf = malloc(buf_len);
- // if (httpd_req_get_hdr_value_str(req, "Test-Header-1", buf, buf_len) == ESP_OK) {
- // ESP_LOGI(TAG, "Found header => Test-Header-1: %s", buf);
- // }
- // free(buf);
- // }
-
- // /* Read URL query string length and allocate memory for length + 1,
- // * extra byte for null termination */
- // buf_len = httpd_req_get_url_query_len(req) + 1;
- // if (buf_len > 1) {
- // buf = malloc(buf_len);
- // if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
- // ESP_LOGI(TAG, "Found URL query => %s", buf);
- // char param[32];
- // /* Get value of expected key from query string */
- // if (httpd_query_key_value(buf, "query1", param, sizeof(param)) == ESP_OK) {
- // ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
- // }
- // if (httpd_query_key_value(buf, "query3", param, sizeof(param)) == ESP_OK) {
- // ESP_LOGI(TAG, "Found URL query parameter => query3=%s", param);
- // }
- // if (httpd_query_key_value(buf, "query2", param, sizeof(param)) == ESP_OK) {
- // ESP_LOGI(TAG, "Found URL query parameter => query2=%s", param);
- // }
- // }
- // free(buf);
- // }
-
- /* Set some custom headers */
- // httpd_resp_set_hdr(req, "Custom-Header-1", "Custom-Value-1");
- // httpd_resp_set_hdr(req, "Custom-Header-2", "Custom-Value-2");
-
- /* Send response with custom headers and body set as the
- * string passed in user context*/
- const char* resp_str = cur_value_str;
- httpd_resp_send(req, resp_str, strlen(resp_str));
-
- /* After sending the HTTP response the old HTTP request
- * headers are lost. Check if HTTP request headers can be read now. */
- // if (httpd_req_get_hdr_value_len(req, "Host") == 0) {
- // ESP_LOGI(TAG, "Request headers lost");
- // }
- return ESP_OK;
- }
-
- static httpd_uri_t uri = {
- .uri = "/",
- .method = HTTP_GET,
- .handler = get_handler,
- };
-
- static httpd_handle_t start_webserver(void)
- {
- httpd_handle_t server = NULL;
- httpd_config_t config = HTTPD_DEFAULT_CONFIG();
-
- // Start the httpd server
- ESP_LOGI(TAG, "Starting server on port: '%d'", config.server_port);
- if (httpd_start(&server, &config) == ESP_OK) {
- // Set URI handlers
- ESP_LOGI(TAG, "Registering URI handlers");
- httpd_register_uri_handler(server, &uri);
- return server;
- }
-
- ESP_LOGI(TAG, "Error starting server!");
- return NULL;
- }
-
- static void stop_webserver(httpd_handle_t server)
- {
- // Stop the httpd server
- httpd_stop(server);
- }
-
- static void connect_handler(void* arg, esp_event_base_t event_base,
- int32_t event_id, void* event_data)
- {
- httpd_handle_t* server = (httpd_handle_t*) arg;
- if (*server == NULL) {
- ESP_LOGI(TAG, "Starting webserver");
- *server = start_webserver();
- }
- }
-
- static void disconnect_handler(void* arg, esp_event_base_t event_base,
- int32_t event_id, void* event_data)
- {
- httpd_handle_t* server = (httpd_handle_t*) arg;
- if (*server) {
- ESP_LOGI(TAG, "Stopping webserver");
- stop_webserver(*server);
- *server = NULL;
- }
- }
-
- void init_server()
- {
- start_webserver();
- }
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