93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
#include "jannex/jannex.h"
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#include <esp_http_server.h>
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static const char *TAG = "api_start";
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static esp_err_t 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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{
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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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{
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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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{
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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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{
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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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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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{
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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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{
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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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{
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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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{
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ESP_LOGI(TAG, "Found URL query => %s", buf);
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char param[EXAMPLE_HTTP_QUERY_KEY_MAX_LEN], dec_param[EXAMPLE_HTTP_QUERY_KEY_MAX_LEN] = {0};
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/* Get value of expected key from query string */
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if (httpd_query_key_value(buf, "start", param, sizeof(param)) == ESP_OK)
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{
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ESP_LOGI(TAG, "Found URL query parameter => query1=%s", param);
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// example_uri_decode(dec_param, param, strnlen(param, EXAMPLE_HTTP_QUERY_KEY_MAX_LEN));
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ESP_LOGI(TAG, "Decoded query parameter => %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 = (const char *)req->user_ctx;
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httpd_resp_send(req, resp_str, HTTPD_RESP_USE_STRLEN);
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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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{
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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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httpd_uri_t api_start = {
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.uri = "/start",
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.method = HTTP_GET,
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.handler = handler,
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/* Let's pass response string in user
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* context to demonstrate it's usage */
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.user_ctx = "Starting!"}; |