Varnish 2.1.5 released

Kristian Lyngstol kristian at
Thu Jan 27 14:40:00 CET 2011

We are pleased to announce Varnish 2.1.5, a bug fix and feature release
in the Varnish 2.1 series. The most notable changes are:

* Two bugs relating to Content-Length and possible duplication of
  Content-Length headers have been resolved.

* Support for bourn-like "here"-documents in the command line interface,
  allowing <<__EOF__ and similar schemes.

* Fixed an issue with  re-using connections after Chunked-Encoding.

* Fix a bug that would inflate the "lost header" count and could cause
  problems during heavy traffic over a single connection, typically seen by
  load testing.

* Use the time of cache-insertion for "If-Modified-Since" requests if a
  "Last-Modified" header isn't provided by the backend.

* Merge multi-line Vary and Cache-Control headers from clients, which
  Google Chromium seem to split up.

* Various build fixes and documentation improvements

* Various bug fixes.

This is a summary of the changes, please see the changelog for a fuller

The release can be downloaded from

Kristian Lyngstøl, on behalf of the Varnish Developers

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