cURL Error Code: 7 cURL Error Message: Failed to connect to 127.0.0.1 port 9200: Connection refused cURL Error Code: 7 cURL Error Message: Failed to connect to 127.0.0.1 port 9200: Connection refused
USB3.0 和 WiFi 的干扰可见官方文档 http://www.usb.org/developers/whitepapers/327216.pdf