Apache 2.0 STATUS: Last modified at [$Date: 2000/03/31 02:38:32 $] Release: Vague plan, assuming more features aren't demanded for the 2.0 release 2.0a1 : released March 10, 2000 2.0 : later in 2000 RELEASE SHOWSTOPPERS: * Fix SAFEREAD * Fix lingering close Status: * MPMs should have responsibility for closing sockets and registering the socket cleanup. Stop registering multiple cleanups for each socket. Move socket close code out of http_connection.c and into the MPMs. Status: * Reliable piped logs look broken everywhere. Each MPM includes essentially identical code to ap_register_other_child(), etc. Most of this code can be moved out of the MPMs and into some common file (http_core.c?). Dean says presumably you mean an os-specific file? * DSO hooks registered during the preflight call to ap_read_config are not 'unregistered' during the preflight clean-up. Thus, when Apache comes up, the hook tables contain two entries for each DSO hook, one of which is bogus, leftover from the preflight. * Pipes to CGI scripts are not being timed out Status: code has been added to APR to support timing out pipes. This needs to be used in Apache now. * Put back resource limit code * suEXEC doesn't work Status: Manoj has posted an patch to fix this. <19991103003605.A20612@samosa.mindspring.com> * Win32: Enable the Windows MPM to honor max_requests_per_child Status: Bill will fix this. * Win32: Fix Win9* specific code in the winnt MPM Status: * Win32: Test access logging with multiple threads. Will the native file I/O calls serialize automagically like the CRT calls or do we need to add region locking each time we access the logs? Status: * Win32: Smoke test all ported modules to make sure they work correctly under Windows. Status: * Current 2.0 code is not tested on many Unix platforms. Make 2.0 work on most, if not all the systems 1.3 did Status: Autoconf and APR will get us most of the way there. * The handler hook needs to use the new registration system * Modules. Which modules do not work yet, can we get a list? * We need a thread-safe resolver, at least on Unix. Status: The best known candidate would be something from BIND v9. RELEASE NON-SHOWSTOPPERS BUT WOULD BE REAL NICE TO WRAP THESE UP: * "make distclean" leaves (at least these) turds: lib/.deps lib/apr/.deps lib/apr/shmem/unix/mm/config.log lib/apr/shmem/unix/mm/mm_conf.h lib/apr/shmem/unix/mm/libtool lib/apr/shmem/unix/mm/config.status lib/apr/shmem/unix/mm/Makefile lib/apr/shmem/unix/mm/mm-config main/a modules/.deps modules/mpm/.deps os/.deps * the top-level configure.in appears to use $USE_MAINTAINER_MODE = yes to set -Wall/etc. flags, and the APR configure.in appears to use --with-debug. both seem like more of a hardwired pain compaired to the pre-2.0 method of setting EXTRA_CFLAGS. * Win32: Reuse accept socket after transmitfile/close This is not a bug, but would be nice to get this feature in before ship. * Win32: Enable the winnt MPM to use the new scoreboard API * Win32: Non-blocking CGI pipes * Win32: Graceful restart of a service is broken (code does shutdown then start) * Dynamically loadable MPMs Enable users of the binary distributions of Apache to be able to dynamically load the MPM. Dean says this probably isn't a good idea. For example consider -lpthread, you couldn't have the same core run with pthreads, prefork, and gnu pth without a lot of headaches is my guess. * Platforms that do not support fork (primarily Win32 and AS/400) Consider introducing HAVE_FORK feature macro. Architect start-up code that avoids initializing all the modules in the parent process on platforms that do not support fork. * Clean the code. There are a lot of places we used APR but didn't remove the hacks that were required for the cross-platform code in 1.3. We need to make the code look like APR was supposed to be there. * Go throught the 1.3 Bug DB and research the bugs marked "suspended". People were told these would be considered for inclusion in Apache 2.0, it would be nice to actually do so. * Win32: Migrate the MPM over to use APR thread/process calls. This would eliminate some code in the Win32 branch that essentially duplicates what is in APR. Status: Bill is working on this. * Move I/O layering into APR. * There are still a number of places in the code where we are loosing error status (i.e. throwing away the error returned by a system call and replacing it with a generic error code) * Win32: Implement reliable piped logs on Windows Status: Bill has prototype code (not reliable) in 1.3. Should be much cleaner with APR in 2.0. * Switch to autoconf, et al. for configuration. Status: Manoj has placed an initial version into the 2.0 repository. Todos include: - "make install" should work - a tool to simplfy third-party module building should be written. Something like apxs - Add a lot more checks to satisfy the various platforms, e.g. for threading * Use APR to get rid of more platform dependancies. Status: Ryan Bloom is working on this. * The connection status table is not very efficient. Also, very few stats are exported to the connection status table (easy to fix), and mod_status is ugly. Other bugs that need fixing: * MaxRequestsPerChild measures connections, not requests. Until someone has a better way, we'll probably just rename it "MaxConnectionsPerChild". * Regex containers don't work in an intutive way Status: No one has come up with an efficient way to fix this behavior. Dean has suggested getting rid of regex containers completely. * SIGSEGV on Linux (glibc 2.1.2) isn't caught properly by a sigwaiting thread. We need to work around this, perhaps unless there is hope soon for a fixed glibc. Other features that need writing: * Finish infrastructure in core for async MPMs Status: post 2.0 * TODO in source -- just do an egrep on "TODO" and see what's there Documentation that needs writing: * The concept of MPMs, especially if we ship more than one MPM for a given platform * New directives in the various MPMs and appropriate links from obsolete directives in core.html to the MPM documentation. * Revise manual/stopping.html and the last part of manual/misc/perf-tuning.html to take account of the MPMs. * API documentation Status: Ben Laurie has written some hooks documentation (apache-2.0/htdocs/hooks.html) * Changes since 1.3.9 can be more easily seen in the commitlog file dev.apache.org:/home/cvs/CVSROOT/commitlogs/apache-2.0 which includes some of Roy's comments when the changes were committed in rough change-sets by purpose. Note that the commitlog does not show the contents of new files until later. Available Patches: * Mike Abbott's patches to improve performance Status: These were written for 1.3, and are awaiting a port to 2.0 Open issues: * What do we do about mod_proxy? * Which MPMs will be included with Apache 2.0? * Is conf/highperformance.conf-dist obsolete? It looks obsolete.