https://tomcat.apache.org/tomcat-9.0-doc/api/org/apache/tomcat/util/net/SocketWrapperBase.OperationState.html
SocketWrapperBase.OperationState (Apache Tomcat 9.0.118 API Documentation)
declaration: package: org.apache.tomcat.util.net, class: SocketWrapperBase, class: OperationState
apache tomcatoperationstateapidocumentation