I'm trying to set a connection timeout before opening a wifi connection. My code is: ``` const uint32_t RESPONSE_TIMEOUT = 30; WiFiClientSecure client; client.setTimeout(RESPONSE_TIMEOUT); if (!client.connect(currentHost.c_str(), port)) { ESP_LOGI(TAG, "Cannot connect to %s", currentHost.c_str()); display(3, " E", "connection lost"); goto failure; } ``` This openes the wifi connection successful, but it logs this error: [E][WiFiClient.cpp:236] setSocketOption(): 1006 : 9 0x1006 is defined as `#define SO_RCVTIMEO 0x1006 /* receive timeout */` but what means error 9 ?