fixed content type for dynamic resources, added for test modem command

with callback

src/FileServer.c

@@ -70,6 +70,10 @@ static esp_err_t set_content_type_from_file(httpd_req_t *req,
     {
         return httpd_resp_set_type(req, "font/woff2");
     }
+    else if (IS_FILE_EXT(filename, ".json"))
+    {
+        return httpd_resp_set_type(req, "application/json");
+    }
     /* This is a limited set only */
     /* For any other type always set as plain text */
     return httpd_resp_set_type(req, "text/plain");

src/GSMTransport.c

@@ -331,9 +331,15 @@ void ModemSendAT(char *cmd, char *resp, int timeout)
     ESP_LOGI(TAG, "Response:%s", resp);
 }
 
+esp_err_t cmd_cb(uint8_t* data, int len)
+{
+    ESP_LOGI(TAG, "Response:%*s", len, data);
+    return ESP_OK;
+}
+
 void ModemSendSMS(void)
 {
-
+esp_modem_command(dce, "atd", &cmd_cb, 3000);
 }
 
 #endif

src/HTTPServer.c

@@ -147,6 +147,10 @@ static esp_err_t set_content_type_from_file(httpd_req_t *req,
     {
         return httpd_resp_set_type(req, "font/woff2");
     }
+    else if (IS_FILE_EXT(filename, ".json"))
+    {
+        return httpd_resp_set_type(req, "application/json");
+    }
     /* This is a limited set only */
     /* For any other type always set as plain text */
     return httpd_resp_set_type(req, "text/plain");