fully remove ctrl_fd (was uninitialized in server loop) - release

README.md

@@ -71,7 +71,7 @@ NB: You can use the pre-build binaries SqueezeAMP4MBFlash which has all the hard
 - spdif_config: bck=33,ws=25,do=15
 
 ### ESP32-A1S
-Works with [ESP32-A1S](https://docs.ai-thinker.com/esp32-a1s) module that includes audio codec and headset output. You still need to use a demo board like [this](https://www.aliexpress.com/item/4001060963585.html) or an external amplifier if you want direct speaker connection. Note that there is a version with AC101 codec and another one with ES8388 (see below)
+Works with [ESP32-A1S](https://docs.ai-thinker.com/esp32-a1s) module that includes audio codec and headset output. You still need to use a demo board like [this](https://www.aliexpress.com/item/4001060963585.html) or an external amplifier if you want direct speaker connection. Note that there is a version with AC101 codec and another one with ES8388 with probably two variants - these boards are a mess (see below)
 
 The board shown above has the following IO set
 - amplifier: GPIO21
@@ -95,8 +95,10 @@ So a possible config would be
 for AC101
 - dac_config: model=AC101,bck=27,ws=26,do=25,di=35,sda=33,scl=32
  
-for ES8388
+for ES8388 (it seems that there are variants with same version number - a total mess)
 - dac_config: model=ES8388,bck=5,ws=25,do=26,sda=18,scl=23,i2c=16
+or
+- dac_config: model=ES8388,bck=27,ws=25,do=26,sda=33,scl=32,i2c=16
 ### T-WATCH2020 by LilyGo
 This is a fun [smartwatch](http://www.lilygo.cn/prod_view.aspx?TypeId=50036&Id=1290&FId=t3:50036:3) based on ESP32. It has a 240x240 ST7789 screen and onboard audio. Not very useful to listen to anything but it works. This is an example of a device that requires an I2C set of commands for its dac (see below). There is a build-option if you decide to rebuild everything by yourself, otherwise the I2S default option works with the following parameters
 

components/wifi-manager/_esp_httpd_main.c

@@ -80,35 +80,6 @@ static esp_err_t _httpd_server_init(struct httpd_data *hd)
     return ESP_OK;
 }
 
-static void _httpd_process_ctrl_msg(struct httpd_data *hd)
-{
-    struct httpd_ctrl_data msg;
-    int ret = recv(hd->ctrl_fd, &msg, sizeof(msg), 0);
-    if (ret <= 0) {
-        ESP_LOGW(TAG, LOG_FMT("error in recv (%d)"), errno);
-        return;
-    }
-    if (ret != sizeof(msg)) {
-        ESP_LOGW(TAG, LOG_FMT("incomplete msg"));
-        return;
-    }
-
-    switch (msg.hc_msg) {
-    case HTTPD_CTRL_WORK:
-        if (msg.hc_work) {
-            ESP_LOGD(TAG, LOG_FMT("work"));
-            (*msg.hc_work)(msg.hc_work_arg);
-        }
-        break;
-    case HTTPD_CTRL_SHUTDOWN:
-        ESP_LOGD(TAG, LOG_FMT("shutdown"));
-        hd->hd_td.status = THREAD_STOPPING;
-        break;
-    default:
-        break;
-    }
-}
-
 static esp_err_t _httpd_accept_conn(struct httpd_data *hd, int listen_fd)
 {
     /* If no space is available for new session, close the least recently used one */
@@ -164,13 +135,10 @@ static esp_err_t _httpd_server(struct httpd_data *hd)
          * older connections will be closed) */
         FD_SET(hd->listen_fd, &read_set);
     }
-    FD_SET(hd->ctrl_fd, &read_set);
 
-    int tmp_max_fd;
-    httpd_sess_set_descriptors(hd, &read_set, &tmp_max_fd);
-    int maxfd = MAX(hd->listen_fd, tmp_max_fd);
-    tmp_max_fd = maxfd;
-    maxfd = MAX(hd->ctrl_fd, tmp_max_fd);
+    int maxfd;
+    httpd_sess_set_descriptors(hd, &read_set, &maxfd);
+    maxfd = MAX(hd->listen_fd, maxfd);
 
     ESP_LOGD(TAG, LOG_FMT("doing select maxfd+1 = %d"), maxfd + 1);
     int active_cnt = select(maxfd + 1, &read_set, NULL, NULL, NULL);
@@ -180,8 +148,6 @@ static esp_err_t _httpd_server(struct httpd_data *hd)
         return ESP_OK;
     }
 
-    /* Case0: Do we have a control message? */
-
     /* Case1: Do we have any activity on the current data
      * sessions? */
     int fd = -1;