Fix connected to be wrongly reported in WiFiClient

Author: me-no-dev

libraries/WiFi/src/WiFiClient.cpp

@@ -438,23 +438,9 @@ uint8_t WiFiClient::connected()
  if (_connected) {
  uint8_t dummy;
  int res = recv(fd(), &dummy, 0, MSG_DONTWAIT);
- if (res < 0) {
- switch (errno) {
- case ENOTCONN:
- case EPIPE:
- case ECONNRESET:
- case ECONNREFUSED:
- case ECONNABORTED:
- _connected = false;
- break;
- default:
- _connected = true;
- break;
- }
- } else if(res == 0){
+ if (res <= 0 && errno != EWOULDBLOCK) {
  _connected = false;
- } else {
- _connected = true;
+ log_i("Disconnected: RES: %d, ERR: %d", res, errno);
  }
  }
  return _connected;