In order to assist folks upgrading we are now going to maintain a
document describing information critical to existing Apache users. Note
that it only lists differences between recent major releases, so
for example, folks using Apache 1.1 or earlier will have to figure out
what changed up to Apache 1.2 before this document can be considered
relevant. Old users could look at the
which tracks code changes.
These are intended to be brief notes, and you should be able to find
more information in either the New Features
document, or in the
Module directive has been changed to the
-DMAXIMUM_DNS definition has been obsoleted by
mod_access enforcing double-reverse DNS lookups
-DSERVER_SUBVERSION=\"string\" compile-time option has
been replaced with the run-time API call
ap_add_version_component(). Compile-time modification of the
server identity by the configuration scripts is no longer supported.
mod_dir has been split into two pieces
mod_browser has been
EXTRA_CFLAGS. This is slower, more information is available
on the performance tuning
page. There is a mild denial of service attack possible with the
default config, but the default config is an order of magnitude faster.
mod_auth_msql has been removed from the distribution.
will add Expires headers to content that does not come from a file
on disk, unless you are using a modification time based setting.
Previously, it would never add an Expires header unless content came
from a file on disk. This could result in Expires headers being added
in places where they were not previously added.
AuthName This and Thatyou will need to change it to
AuthName "This and That"This change was made for consistency in the config language.
Unrecognized method names in the server configuration files will result in the server logging an error message and failing to start. In .htaccess files, unknown methods will cause the server to log an error to its error log and return an 'Internal Server Error' page to the client.
NameVirtualHost directive (one directive per pair).
Previously this support was given implicitly on the "main server
address". Now it has to be explicitly listed so as to avoid many
problems that users had.
Please see the Apache Virtual Host
documentation for further details on configuration.
HostnameLookups defaults to Off.
syntax "allow user-agents" was removed. The replacement is the
more general "allow from env".
TransferLog directive is given then nothing will
(Previously it would default to
ServerType inetd has been deprecated. It still exists,
but bugs are unlikely to be fixed.
httpd_monitor has been deprecated. The replacement is
mod_status and make a request to a URL such as
"nph-" CGIs, which formerly provided a direct socket to the client without any server post-processing, were not fully compatible with HTTP/1.1 or SSL support. As such they would have had to implement the transport details, such as encryption or chunking, in order to work properly in certain situations. Now, the only difference between nph and non-nph scripts is "non-parsed headers".
dbmmanage has been overhauled.
The following changes between the 1.2 and 1.3 API may require slight changes in third party modules not maintained by Apache.
ap_' was globally applied to the following
classes of symbols: Apache provided general functions (e.g.,
ap_cpystrn), public API functions (e.g.,
bgets) and private functions which can't be made static
(because of cross-object usage) but should be (e.g.,
new_connection). For backward source compatibility with
Apache 1.2 a new header file named
compat.h was created which
provides defines for the old symbol names.
You'll either have to
#include compat.h or update the API
symbols you use.
const char *ap_get_server_version().
ap_construct_url prototype change. The second parameter
was previously a
server_rec, it has been changed to
table datatype has been made an opaque type.
Code which assumes a
table is the same as an
array_header will not compile. This is actually a
change to enforce the API the way it was intended, all versions
of Apache have had a
table_elts() function which
is intended for code which needs to access the elements of
a table. The changes required for this are pretty easy, and
work with all versions of Apache.
t is a table. Whenever code refers to
t->elts, replace it with something like this:
Whenever code refers toarray_header *arr = table_elts(t); table_entry *elts = (table_entry *)arr->elts;
arr->nelts. Many examples can be found in
the standard modules, search for