Dear All, 

Did you have any idea of the following message? I'm confirm APM agent has connected to Application Manager Server port 9090 already.

[APM_Insight_services_starter][WARNING]: Could not able to connect with server which receives metrics. Will try to reconnect after 15 minute(s). IO Error occurred.

java.net.SocketException: A system call received a parameter that is not valid. (Read failed)

        at java.net.SocketInputStream.socketRead0(Native Method)

        at java.net.SocketInputStream.socketRead(SocketInputStream.java:127)

        at java.net.SocketInputStream.read(SocketInputStream.java:182)

        at java.net.SocketInputStream.read(SocketInputStream.java:152)

        at com.manageengine.org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:136)

        at com.manageengine.org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:152)

        at com.manageengine.org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:270)

        at com.manageengine.org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)

        at com.manageengine.org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)

        at com.manageengine.org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)

        at com.manageengine.org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161)

        at com.manageengine.org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153)

        at com.manageengine.org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)

        at com.manageengine.org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)

        at com.manageengine.org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254)

        at com.manageengine.org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)

        at com.manageengine.org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)

        at com.manageengine.org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)

        at com.manageengine.org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)

        at com.manageengine.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)

        at com.manageengine.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)

        at com.manageengine.apminsight.agent.service.JavaAgentService.sendData(JavaAgentService.java:444)

        at com.manageengine.apminsight.agent.service.JavaAgentService.sendDataToServer(JavaAgentService.java:397)

        at com.manageengine.apminsight.agent.service.JavaAgentService.connect(JavaAgentService.java:231)

        at com.manageengine.apminsight.agent.service.JavaAgentService.init(JavaAgentService.java:118)

        at com.manageengine.apminsight.agent.JavaAgent$1.run(JavaAgent.java:146)

        at java.lang.Thread.run(Thread.java:811)