The ServletEndpointContext provides an endpoint context maintained by the underlying servlet container based JAX-RPC runtime system. For service endpoints deployed on a servlet container based JAX-RPC runtime system, the context parameter in the ServiceLifecycle.init method is required to be of the Java type javax.xml.rpc.server.ServletEndpointContext.

A servlet container based JAX-RPC runtime system implements the ServletEndpointContext interface. The JAX-RPC runtime system is required to provide appropriate session, message context, servlet context and user principal information per method invocation on the endpoint class.