# Library 5.1 Release Notes

If you are reading the text version of this document then you can find a HTML version in

    	Library/User/ReleaseNotes.html

The main features in this release are:

- Full HTTP/1.1 sample implementation
- Advanced use of HTTP/1.1 Pipelining and persistent connections
- Persistent cache manager

The focus for version 5.1 was to implement a high-performance HTTP/1.1 client used as a testbed for the "Network Performance Effects of HTTP/1.1, CSS1, and PNG" paper. Note that this code is sample code so please take it as that and nothing more!

Check out the latest list of public functions

## Release 5.1 February 18 1997

### New Features and APIs

- Added support pipelining
- Support for zlib based decompression in content encoding

### Bugfixes

- A whole bunch of them...