AFNetwork网络框架返回的错误问题

Printing description of error:

Error Domain=NSURLErrorDomain Code=-1003 "未能找到使用指定主机名的服务器。" UserInfo={NSUnderlyingError=0x608000a5ba80 {Error Domain=kCFErrorDomainCFNetwork Code=-1003 "(null)" UserInfo={_kCFStreamErrorCodeKey=100898174, _kCFStreamErrorDomainKey=-1}}, NSErrorFailingURLStringKey=https://mobile.11tohome.com:8443/device/common/get-fresh-notice?appTime=1480901476&token=8552af388f043e8b5d1081531dc4a0e56073b3a3, NSErrorFailingURLKey=https://mobile.11tohome.com:8443/device/common/get-fresh-notice?appTime=1480901476&token=8552af388f043e8b5d1081531dc4a0e56073b3a3, _kCFStreamErrorDomainKey=-1, _kCFStreamErrorCodeKey=100898174, NSLocalizedDescription=未能找到使用指定主机名的服务器。}