Web and EJB Containers
Containersprovide runtime support for application components. Application components use
theprotocols and methods of the container to access other application components and services
providedby the server. The Enterprise Server provides an application client container, an
appletcontainer, a Web container, and an EJB container. For a diagram that shows the
containers,see the section “Enterprise Server Overview” on page 23.
Thischapter describes the following containers:
■“TheSIP Servlet Container” on page 93
■“TheWeb Container” on page 95
■“TheEJB Container” on page 95

The SIP Servlet Container

EnterpriseServer provides the SIP Servlet container that hosts SIP-compliant applications.
Featuresof this container include the following:
■Providesa network end point to listen to SIP requests.
■Providesan environment to host and manage the lifecycle of SIP Servlets.
■Decideswhat applications to host in which order.
■Supportsthe Secure SIP protocol, SIPS over the transport layer protocol TLS.
■UsesGrizzly NIO framework for server side socket listeners.
■ImplementsDigest Authentication for security.
■SupportsCall Flow. Call Flow is the feature that allows application developers and
ApplicationServer administrators to monitor the behavior of the deployed applications.
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