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