最近极光连接经常提示超时

最近连接时不时的就提示超时，下面是错误log

W/JIGUANG-JCore: [ConnectingHelper] Can not get sis info from host: s.jpush.cn
       java.net.SocketTimeoutException
       at libcore.io.IoBridge.maybeThrowAfterRecvfrom(IoBridge.java:604)
       at libcore.io.IoBridge.recvfrom(IoBridge.java:560)
       at java.net.PlainDatagramSocketImpl.doRecv(PlainDatagramSocketImpl.java:161)
       at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:169)
       at java.net.DatagramSocket.receive(DatagramSocket.java:253)
       at cn.jiguang.b.d.c.a(Unknown Source)
       at cn.jiguang.b.b.g.run(Unknown Source)
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
       at java.lang.Thread.run(Thread.java:838)
       Caused by: libcore.io.ErrnoException: recvfrom failed: EAGAIN (Try again)
       at libcore.io.Posix.recvfromBytes(Native Method)
       at libcore.io.Posix.recvfrom(Posix.java:136)
       at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:164)
       at libcore.io.IoBridge.recvfrom(IoBridge.java:557)
       at java.net.PlainDatagramSocketImpl.doRecv(PlainDatagramSocketImpl.java:161) 
       at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:169) 
       at java.net.DatagramSocket.receive(DatagramSocket.java:253) 
       at cn.jiguang.b.d.c.a(Unknown Source) 
       at cn.jiguang.b.b.g.run(Unknown Source) 
       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
       at java.lang.Thread.run(Thread.java:838)