JPush 一直是 SocketTimeoutException ？

W/JPush: [ConnectingHelper] Get sis info error - sisHost:113.31.17.108
 java.net.SocketTimeoutException
at libcore.io.IoBridge.maybeThrowAfterRecvfrom(IoBridge.java:594)
at libcore.io.IoBridge.recvfrom(IoBridge.java:552)
at java.net.PlainDatagramSocketImpl.doRecv(PlainDatagramSocketImpl.java:163)
at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:171)
at java.net.DatagramSocket.receive(DatagramSocket.java:274)
at cn.jpush.android.helpers.ConnectingHelper.a(Unknown Source)
at cn.jpush.android.helpers.ConnectingHelper.sendSis(Unknown Source)
at cn.jpush.android.service.k.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: android.system.ErrnoException: recvfrom failed: EAGAIN (Try again)
at libcore.io.Posix.recvfromBytes(Native Method)
at libcore.io.Posix.recvfrom(Posix.java:189)
at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:250)
at libcore.io.IoBridge.recvfrom(IoBridge.java:549)
at java.net.PlainDatagramSocketImpl.doRecv(PlainDatagramSocketImpl.java:163) 
at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:171) 
at java.net.DatagramSocket.receive(DatagramSocket.java:274) 
at cn.jpush.android.helpers.ConnectingHelper.a(Unknown Source) 
at cn.jpush.android.helpers.ConnectingHelper.sendSis(Unknown Source) 
at cn.jpush.android.service.k.run(Unknown Source) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
at java.lang.Thread.run(Thread.java:818) 
07-27 17:14:38.905 27614-31315/com.lion_phonenix.whatsfilm D/JPush: [ConnectingHelper] Open connection with default - ip:113.31.17.106, port:7000
07-27 17:14:39.071 27614-31315/com.lion_phonenix.whatsfilm E/JPush: [ConnectingHelper] Register failed - ret:-996