KVM Agent Server Client Shared Memory Synchronization
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Solution Overview
Problem
In terminal server environments, securely and timely updating the graphical display for remote clients is challenging due to information being passed across user session boundaries, leading to issues with data transmission and synchronization.
Innovation Solution
Implementing a KVM agent server/client system with shared memory, synchronized via token passing or other operations, using FIFO pipes, sockets, files, and semaphores to facilitate faster and error-free transfer of display data, allowing protocol-independent communication between the agent server and client.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent instances of applications are implemented to satisfy remote client demands, then client service capability is improved, but secure and synchronous updating of graphical display becomes difficult
Solution Approach 1:
The patent introduces a window server as an intermediary component that mediates between multiple application instances and client sessions. The window server maintains a centralized representation of the graphical display and controls access to it, ensuring that display updates are synchronized and secure across multiple clients while allowing each application instance to operate independently.
2Ease of operation
If graphical data is transmitted via window server across user session boundaries, then display information is made accessible, but information security deteriorates due to unauthorized access
Solution Approach 1:
The patent implements local quality control by associating each graphical display element with specific access permissions and session identifiers. The window server evaluates the origin and destination of each display update, applying different security rules based on the local context of the transaction, thereby allowing legitimate cross-session updates while blocking unauthorized access.
3Speed
If display data transfer speed is increased, then user experience is improved, but data transmission errors may increase
Solution Approach 1:
The patent implements continuous data transfer mechanisms where the window server maintains persistent connections and buffered data streams between application instances and client sessions. This allows display data to be transmitted continuously at high speeds without interruption, while built-in error checking and correction protocols ensure data integrity throughout the continuous transmission process.
Data Source
AI summary
Methods, apparatus, systems and computer program product for updating a user session in a terminal server environment. Transfer of display data corresponding to an updated user interface can occur via a memory shared between an agent server and an agent client in a terminal server environment. Access to the shared memory can be synchronized via token passing or other operation to prevent simultaneous access to the shared memory. Token sharing and synchronized input/output can be performed using FIFOs, sockets, files, semaphores and the like, allowing communications between the agent server and agent client communications to adapt to different operating system architecture.