Remote server closed the connection

[fortuneyan]

OrientDB Version: 3.2.28

Java Version: 1.8

OS: Linux CentOS 8

orientdb-server-contig.xml configured:

<properties>
           <entry name="network.binary.allowNoToken" value="true"/>
           <entry name="network.token.expireTimeout" value="525600"/>
</properties>

Expected behavior

No need to restart nodejs rest services

Actual behavior

We use orientjs client 3.2.0 connecting to OrientDB3.2.28, "Remote server closed the connection" exception reported after 1 day running.

Exception Log:

SEVER Error reading request [ONetworkProtocolBinary]
java.lang.StringIndexOutOfBoundsException: String index out of range: 1668246834
at java.lang.String.checkBounds(String.java:385)
at java.lang.String.<init>(String.java:425)
at com.orientechnologies.orient.core.serialization.serializer.stream.OStreamSerializerAnyStreamable.fromStream(OStreamSerializerAnyStreamable.java:68)
at com.orientechnologies.orient.client.remote.message.OCommandRequest.read(OCommandRequest.java:70)
at com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.sessionRequest(ONetworkProtocolBinary.java:318)
at com.orientechnologies.orient.server.network.protocol.binary.ONetworkProtocolBinary.execute(ONetworkProtocolBinary.java:238)
at com.orientechnologies.common.thread.OSoftThread.run(OSoftThread.java:68)

After Restart nodejs services, the connections were created successfully.
The services connecting to OrientDB 2.2.37 works well.

Steps to reproduce

Just let services running and wait for more than one day, service will report connection exception "Remote server closed the connection".

[tglman]

Hi,

I've seen similar things in the past, in some cases even independently to the OrientDB code, the network will drop the connection if for a while it was idle(more then a day), at the end the solution I found out was to make sure that the client would have at least some activity every once a while with some artificial request if none were happening for some time(less than a day).