java.net.SocketException: Unexpected end of file from server

java.net.SocketException: Unexpected end of file from server
    at sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:792) ~[?:1.8.0_91]
    at sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:647) ~[?:1.8.0_91]
    at sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:2001) ~[?:1.8.0_91]
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:183) ~[?:1.8.0_91]
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153) ~[?:1.8.0_91]
    at com.crt.serviceSupport.common.utils.HttpUtils.sendPostx(HttpUtils.java:315) ~[ServiceSupport-common-1.0.jar:?]
    at com.crt.serviceSupport.service.business.impl.ActivityRecordServiceImpl.invokeCampEvent(ActivityRecordServiceImpl.java:966) ~[ServiceSupport-service-1.0.jar:?]
    at com.crt.serviceSupport.service.business.impl.ActivityRecordServiceImpl.queryUserStateByMobile(ActivityRecordServiceImpl.java:897) ~[ServiceSupport-service-1.0.jar:?]
    at com.crt.serviceSupport.facade.impl.ActivityRecordFacadeImpl.queryUserStateByMobile(ActivityRecordFacadeImpl.java:113) ~[ServiceSupport-service-1.0.jar:?]
    at com.alibaba.dubbo.common.bytecode.Wrapper54.invokeMethod(Wrapper54.java) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.validation.filter.ValidationFilter.invoke(ValidationFilter.java:57) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:70) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:132) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:113) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) ~[dubbo-2.8.4.jar:2.8.4]
    at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) ~[dubbo-2.8.4.jar:2.8.4]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_91]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_91]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]