{"result": 60008,"errmsg": "service timeout or request format error,please check and try again"}https://yun.tim.qq.com/v5/tlssmssvr/pullsendstatus?sdkappid=xxxx&random=xxxx&begin_date=2018032200&%20end_date=2018032300&%20sig=xxxxxxxxxxxx&time=152
System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (00000005, 0xFFFDFFFF): Name or service not known at System.Net.Dns.GetHostAddresses(String hostNameOrAddress)
at System.Net.NetworkInformation.Ping