tree 8b3f349bd47edcbf5462dcac9e83ed05c324ea80
parent 81521ed850899792dc0118fd4ccded4058895962
author Willy Tarreau <w@1wt.eu> 1530290522 +0200
committer Willy Tarreau <w@1wt.eu> 1532010222 +0200
encoding latin1

MAJOR: start to change buffer API

This is intentionally the minimal and safest set of changes, some cleanups
area still required. These changes are quite tricky and cannot be
independantly tested, so it's important to keep this patch as bisectable
as possible.

buf_empty and buf_wanted were changed and are now exactly similar since
there's no <p> member in the structure anymore. Given that no test is
ever made in the code to check that buf == &buf_wanted, it may be possible
that we don't need to have two anymore, unless some buf_empty tests have
precedence. This will have to be investigated.

A significant part of this commit affects the HTTP compression code,
which used to deeply manipulate the input and output buffers without
any reasonable solution for a better abstraction. For this reason, if
any regression is met and designates this patch as the culprit, it is
important to run tests which specifically involve compression or which
definitely don't use it in order to spot the issue.

Cc: Olivier Houchard <ohouchard@haproxy.com>