Unisys OS 2200 communications

It is a protected subsystem that provides APIs for programs that wish to communicate directly with the network.

[4] WebTS, the OS 2200 Web Transaction Server, is a full implementation of the HTTP and HTTPS protocol stacks.

Server scripting using Java applets is supported, but the primary usage of WebTS is its full integration with OS 2200 including all security and transaction processing.

Transactions developed for OS 2200 using the DPS display manager, typically require no changes or even recompilation to be fully operational with Web interfaces concurrently with terminals.

Changes to DPS combined with client-side Java applets make everything transparent to the transaction program.