Fix Client returning disconnected because of VFS errors

Author: me-no-dev

libraries/WiFi/src/WiFiClient.cpp

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