Object Technology Licensing Corporation

Taligent, Inc.

Taligeni, Inc.

Christopher E Pettus

David B Goldsmith

Christina E Warren

Amy M Goldsmith

Donald R Loomis

On a multi-node client server network, a client node obtains access to remote services by means of a communications directory service located in each node of the network. The communications directory service includes a tree structure to which existing directory services and other network services can be added. The tree structure has a plurality of nodes each of which includes specific methods that query and browse the associated directory service if such actions are supported by the underlying service. The communications directory service further includes shared libraries which store a service object associated with each service offered on the network. The service object, in turn, includes the service exchange address and communication link configuration information. A client desiring to access a remote service retrieves the appropriate service object from the communications directory service and uses the service object to set up the communications path.

Object-oriented distributed communications directory system

Remote procedure call (RPC) objects are provided in both a client node and a server node of a client-server network for invoking and responding to service requests generated by calls to local service objects. Specifically, the RPC objects comprise a &ldquo;caller&rdquo; object which, once instantiated, accepts service requests from client objects. A service request made by calling a function in the local service object is automatically routed by the caller object to a local service program if the requests can be serviced locally, or to a remote server node if the appropriate service program is located on the remote node. The RPC objects also include a &ldquo;dispatcher&rdquo; object which is located at the remote service node and receives incoming service requests. The service requests are actually satisfied by means of service functions which are part of service objects in the server node, but these latter service functions are associated with the local service objects by means of a &ldquo;dictionary&rdquo; located in the dispatcher object. In some cases, a service located at a remote node may itself need data or functions which, in turn, reside at other nodes. In this case, the dispatcher object is provided with additional &ldquo;sub-objects&rdquo; or &ldquo;child&rdquo; objects which include their own dispatcher objects. In this manner, incoming requests directed to the &ldquo;parent&rdquo; dispatcher object are forwarded to the child dispatcher objects for service.

Distributed object networking service

Object-oriented distributed communications directory service

Remote procedure call (RPC) objects are provided in both a client node and a server node of a client-server network for invoking and responding to service requests generated by calls to local service objects. Specifically, the RPC objects comprise a 'caller' object which, once instantiated, accepts service requests from client objects. A service request made by calling a function in the local service object is automatically routed by the caller object to a local service program if the requests can be serviced locally, or to a remote server node if the appropriate service program is located on the remote node. The RPC objects also include a 'dispatcher' object which is located at the remote service node and receives incoming service requests. The service requests are actually satisfied by means of service functions which are part of service objects in the server node, but these latter service functions are associated with the local service objects by means of a 'dictionary' located in the dispatcher object. In some cases, a service located at a remote node may itself need data or functions which, in turn, reside at other nodes. In this case, the dispatcher object is provided with additional 'sub-objects' or 'child' objects which include their own dispatcher objects. In this manner, incoming requests directed to the 'parent' dispatcher object are forwarded to the child dispatcher objects for service.

Authentication of users with dynamically configurable protocol stack

Novel object-oriented client-server facility (CSF) and networking service facility (NSF) interfaces implement communication between application programs residing in client and server nodes of a distributed services network. The CSF interface includes remote procedure call (RPC) objects for invoking and responding to service requests at the nodes, and application programming interface (API) objects for transporting those requests between the nodes. However, the API objects only provide communication transports within a node. Accordingly, the API and RPC objects interact with dynamically-configurable protocol stacks within the NSF interfaces to complete the transport mechanism needed by an application program on the client node when accessing services on a remote server node.

Object-oriented network protocol configuration system utilizing a

System for activating new service in client server network by

Client server system and method of operation including a dynamically

Novel object-oriented client-server facility (CSF) and networking service facility (NSF) interfaces implement communication between application programs residing in client and server nodes of a distributed services network. The CSF interface includes remote procedure call (RPC) objects for invoking and responding to service requests at the nodes, and application programming interface (API) objects for transporting those requests between the nodes. However, the API objects only provide communication transports within a node. Accordingly, the API and RPC objects interact with dynamically-configurable protocol stacks within the NSF interfaces to complete the transport mechanism needed by an application program on the client node when accessing services on a remote server node. A preferred embodiment provides an efficient way to perform object operations in a broadcast fashion over a communication network and ensures the receipt and execution of the operation by each target of the broadcast.

Object-oriented networking system with dynamically configurable

A client-server facility (CSF) interface and networking service facility (NSF) interface implement communication between application programs residing in client and server nodes of a distributed services network. The CSF interface includes remote procedure call (RPC) objects for invoking and responding to service requests at the nodes, and application programming interface (API) objects for transporting those requests between the nodes. However, the API objects only provide communication transports within a node. Accordingly, the API and RPC objects interact with dynamically-configurable protocol stacks within the NSF interfaces to complete the transport mechanism needed by an application program on the client node when accessing services on a remote server node.

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San Francisco, CA, United States of America

Christopher E Pettus