Benefits of CICS Web support upgrade to HTTP/1.1

The CICS® Web support upgrade to HTTP/1.1 provides the following benefits:
  • Conditional compliance with the HTTP/1.1 specification (RFC 2616) means that CICS Transaction Server for z/OS®, Version 3 Release 1 can interact easily and correctly with a wider range of services and clients on the Internet.
  • Persistent connections are now the default for connections between CICS and a server or Web client. Persistent connections improve network performance because a new connection does not have to be established for each request.
  • Support for pipelining means that CICS applications can send a sequence of multiple requests to a server, without waiting for an acknowledgement after each item. CICS Web support also ensures correct handling for pipelined requests from a Web client to CICS.
  • Chunked transfer-coding (known as chunking for short) allows dynamically produced content, or a large amount of content, to be transferred in convenient segments, while still enabling the recipient to verify that it has received the complete message. CICS can receive items sent in this way, and a user-written application program can send out items in this way.
  • CICS automatically creates virtual hosts using your URIMAP definitions, enabling you to provide multiple host names at the same IP address.
  • CICS supports requests by Web clients and by CICS applications with all the HTTP methods defined by the HTTP/1.1 specification, and also provides automatic handling and responses for requests from Web clients with OPTIONS and TRACE methods.