The Squid HTTP Proxy team is very pleased to announce the availability of the Squid-3.2.8 release! This release is a bug fix release resolving a number of bugs found in the prior releases. Some major changes to be aware of: * Fixed several major crashes when opening server connections These issues affected upstream connections when the client aborted early or timed out waiting for the final stages of HTTP transaction to complete. The messages noting orphan connections are also silenced. * Cache object size options have been redesigned In previous versions the interaction of maximum_object_size, maximum_object_size_in_memory, and cache_dir max-size=N options was a little confusing and in some configurations would incorrectly cause objects not to cache at all. The parameters for maximum stored object size limits in Squid are: - cache_dir max-size=N options are the authoritive setting for what size may be stored in that cache directory. - the maximum_object_size directive is only the default value for any cache_dir where max-size= parameter is not set explicitly. - maximum_object_size_in_memory is the equivalent to a max-size=N option for the cache_mem RAM cache. - maximum object size cached by Squid is the size of the largest size limit from any cache_dir or memory cache. No configuration changes are required to take advantage of this update. However, the caching behaviour of some configurations may alter visibly. * All Squid-2.7 directives are now accepted by Squid-3. Previously leaving a number of Squid-2.7 directives in squid.conf would cause Squid-3 to halt on startup citing Bungled squid.conf. From this release all directive names supported by Squid-2.7 and 2.6 are accepted by the Squid-3. This does not mean their features are supported, just that the squid.conf from most Squid-2.7 installations can be used to start a Squid-3 without encountering Bungled errors. Running squid -k parse before starting Squid after any upgrade is still the recommended process. It will highlight any issues that need manual attention. The outstanding list of Squid-2.7 features still missing from Squid-3 can be found in the release notes. * tcp_outgoing_tos bug fixes The tcp_outgoing_tos directive was not being used correctly on CONNECT tunnels and the _tos and _mark directives were not using X-Forwarded-For indirect client IP correctly in their ACL tests. These isues are now fully resolved. * Various bugs in diskd and rock storage types Rock DB cache was being cleared if squid -z was run over an existing and perfectly valid cache. The operation of -z is that it will create (only) a directory structure if missing, or in the case of UFS any missing parts of the whole structure. It will not validate nor repair other types of damage. The SHM buffer regression on caches using diskd is fixed. If you are encountering any of these SHM messages in 3.2.7 (only) they are a sign of disk files not being closed properly. * cache_peer persistent connections upgrade In previous Squid the persistent connections to cache_peer servers has not been very efficient, to the point that on some peers the keep-alive feature of HTTP was not working at all. This release contains a small redesign on the persistent connection re-use decisions which greatl reduces the FD required for upstream peers and allows those connections to make full use of keep-alive. No configuration changes are required to take advantage of this update. See the ChangeLog for the full list of changes in this and earlier releases. Users of Squid-3.2.7 with diskd encountering SHM messages are urged to upgrade to this release as soon as possible. All users of Squid-3.2 are encouraged to upgrade to the 3.3 series stable release as soon as possible. Please remember to run "squid -k parse" when testing upgrade to a new version of Squid. It will audit your configuration files and report any identifiable issues the new release will have in your installation before you "press go". We are still removing the infamous "Bungled Config" halting points and adding checks, so if something is not identified please report it. Please refer to the release notes at http://www.squid-cache.org/Versions/v3/3.2/RELEASENOTES.html when you are ready to make the switch to Squid-3.2 Upgrade tip: "squid -k parse" is starting to display even more useful hints about squid.conf changes. This new release can be downloaded from our HTTP or FTP servers http://www.squid-cache.org/Versions/v3/3.2/ ftp://ftp.squid-cache.org/pub/squid/ ftp://ftp.squid-cache.org/pub/archive/3.2/ or the mirrors. For a list of mirror sites see http://www.squid-cache.org/Download/http-mirrors.html http://www.squid-cache.org/Download/mirrors.html If you encounter any issues with this release please file a bug report. http://bugs.squid-cache.org/ Amos Jeffries
