3 zoom: Torus setting: authenticationMode which may hold values "basic"
8 configure: check for Libxslt support in YAZ and rely on definitions
9 from yaz-config, rather than doing own xslt/xml2 checks.
11 Allow timestamp format for log lines to be given with option -m
12 for metaproxy. Similar to yaz-ztest/GFS option -m.
14 Document log category 'line' for log filter.
16 Solr configuration example in etc/config-solr.xml
18 multi: do not mess with request package. For scan and search,
19 database-names were modified and the request package was left with
20 dangling pointers that caused a log filter to fail (request package
21 inspected after multi was invoked).
23 Documentation: fix id of metaproxy-config ref .
25 Documentation: update for USEMARCON support.
29 record_transform: allow OPACXML to OPAC conversion
31 zoom: document content-proxy
33 zoom: document db parm content-{user,password}, torus_url. Also
34 <torus auth_url="..> which makes zoom operate in authenticated mode
39 zoom: fix http://-check. SRU search broken in 1.3.51.
43 zoom: only append http:// for SRU if not already given . Makes it
44 possible to use https-URLs.
46 Use yazpp 1.4 or later due to new ABI.
48 frontend_net: allow max package size to be specified. Controlled by
49 attribute 'max_recv_bytes' of element 'port'.
53 For most generated diagnostics by filters, typically temporary
54 system error, augment addinfo message with filter name.
56 Add support for CentOS 6 packages.
58 sru_z3950: interpret Z39.50 diagnostics part of Init Response.
60 Add man page for metaproxy-config.
64 zoom: new config element passthru. This defines an element set that is
65 passed verbatim to the backend in pz2 mode.
67 auth_simple: allow both idPass and open auth. Also fix SEGV that could
72 z3950_client: fix string handling for init diagnostics in the case where
75 query_rewrite: no charset conversion for error queries. Avoid performing
76 charset conversion for query conversion errors. The resulting Type-1
77 query is invalid in this case.
81 For graceful stop (SIGUSR1), metaproxy will kill children processes.
83 Log when metaproxy is invoked in test mode (-t).
85 Log PID for each log message.
87 multi: combine both NSDs and multiple NSDs into one (diagnostics).
89 z3950_client: fixup multiple NSD's too. Like surrogate diagnostics,
90 a (backend=target) is appended for each diagnostic so that can be
91 determined the origin of error.
93 multi: hideerrors also in use for present response.
95 Solr example in zoom man page.
97 Fix typo in query_rewrite config example.
99 Log at least first non surrogate diagnostic. Instead of
100 "Z_Records_multipleNSD"
102 multi: Fix check for opt Records in present response. A SEGV could occur
103 if a target did not return records and no diagnostics.
105 --- 1.3.46 2012/09/24
107 Yet another fix for graceful stop.
109 --- 1.3.45 2012/09/12
111 sru_z3950: relay surrogate diagnostics.
113 --- 1.3.44 2012/09/10
115 zoom: Honor extraArgs, strip # in zurl.
117 multi: fix SEGV for scan. Reported by Rustam T. Usmanov.
119 zoom: url_recipe allow %{var[reg]} substitutions.
120 It's like ${var[reg]} but does URI component encoding as well.
122 --- 1.3.43 2012/08/22
124 RPM/Deb: require yazpp 1.3.2, because it fixes a missing close of
125 non-keepalive HTTP sessions.
127 http_file: allow zero size files (bug fix)
129 Fix zoom schema: auth_url is optional
131 --- 1.3.42 2012/08/20
133 zoom: fix un-init memory (could result in SEGV at session close)
135 frontend_net: handle X-Forwarded-For. This is stored in package.origin()
136 and may be used in filters as usual.
138 zoom: authentication via Torus lookup
139 Enabled by new configuration setting: auth_url . If this is defined,
140 the zoom module will contact Torus for auth/IP lookup and that will
141 define realm to be used in session.
143 --- 1.3.41 2012/08/10
145 virt_db: Fix database name - first character we removed by mistake.
146 Bug introduced in 1.3.40.
148 --- 1.3.40 2012/08/06
150 virt_db: Don't use "unix path" as database for Unix sockets.
152 --- 1.3.39 2012/08/02
154 z3950_client: Don't tamper with / in zurl - fixes problems
155 using Unix sockets for backends.
157 session_shared: fix integer overflow problem with hit count.
159 session_shared: avoid long usage of cached queries.
161 zoom: New database argument , torus_url to set URL of Torus
162 record to be fetched.
164 --- 1.3.38 2012/07/04
166 Fixes for 'metaproxy reload' for RPM/Debian packages.
168 zoom: Allow rpn2cql conversion to be augmented with a properties file.
169 Element rpn2cql can be specified per-target for the zoom filter.
171 log: New category "line" which is a single-line log message with
172 most important parts of a HTTP/Z39.50 request/response.
174 --- 1.3.37 2012/06/01
176 frontend_net: add facility to report live statistics about response
177 times and current thread usage. The report is an XML document
178 and is triggered for a specific URL path. This is set by <stat-req>
179 in the configuration of frontend_net. By default this report is
180 disabled (same as empty value for <stat-req>).
182 Fix reload problem in init.d script for RPM/Debian.
183 The '/etc/init.d/metaproxy reload' in some cases would stop but not
184 start metaproxy - effectively stopping the service.
186 Don't display start log message when config testing (-t).
188 zoom: avoid CCL message limit of 1K in ZOOM filter.
190 --- 1.3.36 2012/05/10
192 metaproxy init script reacts to reload which does graceful stop +
193 start and is used by logrorate script.
195 --- 1.3.35 2012/05/09
197 Fixes for Windows compilation.
199 Metaproxy daemon reacts to SIGUSR1 in which case it will leave
200 existing sessions running but terminate the monitor process that is
201 used in keepalive mode.
203 Change start log message to 'metaproxy start'. Was 'Metaproxy start'
204 before. Consistent with 'metaproxy stop' message.
206 zoom: document zoom's proxy_timeout
208 z3950_client: fixup addinfo for init response
210 virt_db: return other diagnostic if init is rejected. Diagnostic 236:
211 "Access to specified database denied" is returned, but only if init
212 response from backend does not carry diagnostics already.
214 multi: relays user info for first rejected target. The other-information
215 field for init response for first rejected target is in common init
216 response. This ensures that some backend init diagnostics are returned to
219 --- 1.3.34 2012/04/25
221 frontend_log: extend logging (when message is given in config).
223 --- 1.3.33 2012/04/25
225 zoom: Fix check for proxy. Use diagnostic 1074 for proxy failures.
227 --- 1.3.32 2012/04/24
229 sru_z3950 filter passes through incoming Z39.50 requests again. Was
230 not handled by mistake in Metaproxy versions 1.3.29, 1.3.30 and 1.3.31.
232 --- 1.3.31 2012/04/24
234 zoom: fixes for retry/proxy failover logic. More logging.
236 --- 1.3.30 2012/04/23
238 zoom: return addinfo="proxy failure" for proxy failures. This also
239 changes the scheme for dealing with proxies a bit. zoom now always
240 do proxy check, even if there's no failover. Fortunately, that's not
243 zoom: Init rejected wo diagnostics maps to Bib-1:1014.
244 Bib-1 1014, "Init/AC: Authentication System error", seems pretty
245 generic. We don't know why the init would fail; IP, user, block IP, etc.
246 sru_z3950 filter maps this to SRU diagnostic 3: "Authentication error".
248 zoom: guess if invalid SRU response was an auth failure
250 session_shared: disable session retry by default . Can be enabled by
251 restart="true" in resultset section.
253 --- 1.3.29 2012/04/18
255 zoom: may read cf-proxy's config settings.
256 This reduces manual configuration of the content proxy server host.
257 The ZOOM module will use the old style session.proxyhost if "server"
258 is given (deprecated) and use the new style proxyhost/session if
259 "config_file" is in use.
261 frontend_net: remove incoming requests that can not be handled
262 Requests in queue for filter frontend_net are removed if client
263 closes connection for the session and request is not yet handled.
265 sru_z3950: serialize requests. This is to ensure that pipelined
266 HTTP requests are handled properly.
268 --- 1.3.28 2012/04/04
270 New class, wrbuf, that wraps YAZ' WRBUF.
272 --- 1.3.27 2012/03/30
274 Metaproxy daemon is now running as user "metaproxy". This user is
275 managed by package maintainer scripts. The user information is stored
276 in /etc/metaproxy/metaproxy.user .
278 --- 1.3.26 2012/03/20
280 New filter, sort, that allows sorting of XML records via Z39.50
283 Filter record_transform: USEMarcon support. For example:
284 <retrieval syntax="usmarc">
285 <backend syntax="unimarc" name="F">
286 <usemarcon stage1="/etc/usemarcon/uni2us/uni2us.ini"/>
290 Filter multi: empty route pattern uses route as default.
292 <target route="z3950.indexdata.com">z3950.indexdata.com</route>
293 may use the shorter notation
294 <target route="z3950.indexdata.com"/>
296 Filter query_rewrite: use config path to locate XSLT.
298 Filter frontend_net: log statistics.
299 If a custom message element in frontend_net configuration it makes
300 the frontend_net filter produce a log entry whenever an operation
301 is completed. The log is always written using yaz_log with the
302 custom message given, the package ID (session ID) , the time
303 the operation has been active (end-to-end) , the threads currently
304 active/total and the size of the request input/output queues.
306 query_rewrite: charset conversion of query terms.
307 This is an optional feature. Enabled by element <charset> in
308 configuration with attribute 'from' and 'to' that specifies
309 from/to encodings. The default 'from' encoding is UTF-8.
311 Filter record_transform: honor piggyback searches.
313 Filter zoom: re-connect when database is reused.
314 Re-connect is necessary if a connection is lost or a timeout occurs.
315 If not, we'll be seeing zero hits, when we shouldn't.
317 --- 1.3.25 2012/02/29
319 zoom: Change scheme for dealing with content proxy URLs. The module
320 now has its own common XSL transform that is enabled by record_xsl
321 attribute in the configuration. This XSL gets parameter cproxyhost
322 that holds the host for the content proxy session . The genearted-url
323 is created only if urlRecipe is enabled. In previous version default
324 value of urlRecipe was ${md-electronic-url}; it is now empty and
325 disabled by default. Also generated-url no longer includes the content
326 proxy host. Content proxying URLs is supposed to the handle in the record_xsl
329 zoom: new setting timeout that specifies timeout for outgoing Z39.50/SRU
330 connections. Default value is 40 (seconds).
332 zoom: tune CCL to Z39.50 diagnostics mapping. Throw Bib-1: 108
333 "Malformed query" for syntax errors and related ones; throw
334 Bib-1: 3 "Unsupported search" for everything else. Details from
335 the CCL parser is provided as additional-info.
337 multi: new setting hideerrors that makes multi only relay diagnostics
338 to a client if all backends fail.
340 --- 1.3.24 2012/02/23
342 zoom: empty ccl_map field-mappings disables CCL map.
344 zoom: fix Explain search that could return error if session was
347 --- 1.3.23 2012/02/10
349 zoom: returns Explain records for database IR-Explain---1. The
350 target profile records are converted to Explain records via XSLT.
352 session_shared: make error recovery configurable. Whether a search
353 is restarted on errors or not, is configurable by attribute "restart"
354 in element "resultset" in configuration.
356 session_shared: only relay init for first request. session_shared, for
357 each backend class, now only relays first init request (rather than all).
358 The module only needs to save init response info once. This avoids the
359 need to check for session max.
361 --- 1.3.22 2012/02/02
363 zoom: fix memory leaks.
365 session_shared: maximum number of sessons is configurable. Default
366 value is 100. Result-sets for backends without named result sets are
367 only re-used if databases is identical for a search. This is under the
368 assumption that performance may suffer for those backends when
369 changing the database for each search.
371 multi: combines diagnostics from all backends. All diagnostics from
372 backends are combined into multiple non-surrogate diagnostics; rather
373 than just one diagnostic from first backend.
375 --- 1.3.21 2011/12/27
377 zoom: relay realm to cproxy parameter file.
379 Configuration: Allow filter collection element inside route. This
380 makes it possible to include multiple filters at once.
382 zoom: nocproxy also disables urlRecipe.
384 --- 1.3.20 2011/12/21
386 zoom: return diagnostic if CQL sortby conv fails. Diagnostic Bib-1 214
387 "Illegal sort relation" is returned. Gets translated to SRU diagnostic
388 90: "Unsupported direction value".
390 zoom: honor database argument nocproxy. This disables creating a content
391 connector session (for non-CF targets, usually) and also relays nocproxy
392 as database argument to a CF target.
394 --- 1.3.19 2011/12/16
396 zoom: Multiple proxy hosts may be given for proxy rich database
397 parameter. List is comma separated.
399 http_file: decodes URI paths properly. Does not return 404: not found
400 if no prefix are matches. Instead packages are passed on.
402 --- 1.3.18 2011/12/08
404 zoom: content-{user,password,proxy} are passed on to content proxy
405 system and takes precedence over user,password,proxy .
407 sru_z3950: SRU extra argument x-log-enable=1 enables a search response
408 with a log element including log material from children filters. At
409 this point, only the zoom filter uses this log facility. It will
410 eventually be used by other filters as well. In particular it might be
411 useful for this feature to track all filters in used during a search.
413 zoom: for x-log-enable=1, APDUs sent by ZOOM C, records as received
414 and queries as they are manipulated are logged.
416 zoom: extend addinfo with native diagnostics. Diagnostics as received
417 by ZOOM C are put into addinfo - including ZOOM, HTTP, SRU and Bib-1
418 diagnostics. This indicates both a backend diagnostic and the original
421 zoom: default urlRecipe value is ${md-electronic-url}
423 zoom: target profile setting sruVersion is recognized.
425 --- 1.3.17 2011/11/17
427 zoom: log target profile record fetched (AKA Torus).
429 --- 1.3.16 2011/11/17
431 Change target profile parameter CfSubDb to CfSubDB.
433 --- 1.3.15 2011/11/12
435 zoom: bug fix: realm was relayed to CF targets by mistake (realm only
436 makes sense to the zoom module itself).
438 --- 1.3.14 2011/11/11
440 zoom: realm may be given as part of database.
442 --- 1.3.13 2011/10/26
444 Fix Origin class assigment method; was removd by mistake in 1.3.12.
446 --- 1.3.12 2011/10/26
448 zoom: database args x-name=value are passed through to backend database.
450 SRU filter: user may specify session ID that is passed to log entries
451 that follows. It is specified by using x-session-id in the SRU arguments.
453 zoom: fix null pointer reference which would occur for bad url parameter
454 inside "torus" or if url was not given.
456 --- 1.3.11 2011/09/09
457 Fix bug in filter session_shared where sessions would not expire
458 properly (session ttl). This in turn could make the target close the
459 connection before expected and session_shared would return diagnostic
460 2: system temporarily available.
462 --- 1.3.10 2011/09/09
464 zoom: new target profile setting: sortmap_field. If sortmap_field is given
465 the field is mapped to the value for the sortmap. Values not matching
466 sortmap_field are passed verbatim.
468 zoom: new target profile setting: sortStrategy. One of: "z3950", "type7",
469 "cql", "sru11" or "embed". The "embed" chooses type-7 or CQL sortby
470 depending on whether RPN or CQL is actually sent to the target.
474 zoom: urlRecipe result is stored in <pz:metadata type="generated-url">.
476 zoom: For content proxy authentication is stored in param name
477 "auth", instead of "authentication".
481 zoom: relay schema in SRU mode. Previously recordSchema was not affected
486 zoom: new target profile element literalTransform that holds XSLT
487 (encoded as string) for target. Only if present and non-zero length it is
488 considered present. This takes precedence over transform.
490 Don't rely on trang anymore for Git checkout builds. Configuration in etc
491 will only be properly validated if trang is available. From now on only
492 relax NC files are bundled with the source dist.
494 Updates to check for Boost unit test (autoconf stuff). On MacOSX this
495 component was not detected when it should be.
499 z3950_client: mark non-surrogate diagnostics from backend.
501 zoom: a proxy may be specified for HTTP fetch of target profiles.
505 Honor piggyback. Makes some SRU targets behave that insist on
506 maximumRecords > 0, but also increases performance.
510 Fix dlpath in installed metaproxy.xml for RPM/Deb package. The
511 file was not update for libdir/metaproxy4 in version 1.3.2.
515 Change location of Metaproxy modules from libdir/metaproxy to
516 libdir/metaproxy4. Directory libdir/metaproxy is also owned by
517 libmetaproxy3 and, thus, should not be used by libmetaproxy4.
519 New facility to dump APDUs from zoom filter. Enabled by
520 <log apdu="true"/> in the zoom filter configuation.
522 zoom filter bug fix: SRU diagnostics received from backend was
523 not properly converted to Bib-1 diagnostics.
525 Package metaproxy depends on libmetaproxy4, same version.
529 zoom: fix a bug WRT passing authentication parameters to backends.
533 Fixes for windows Makefile.
535 --- 1.2.10 2011/07/25
537 Change major version of metaproxy library from 3 to 4. This in turn
538 makes new package names for Debian and RPM.
542 zoom: enable marc-8 encoding by default for usmarc and opac (in pz2
545 zoom: configurable element sets for record transforms.
547 zoom: the target profile based transform is specified by element_transform
548 in element torus of of the ZOOM filter configuration ; default value
549 is "pz2". Target profile based retrieval is specified by element_raw
550 in configuration. It will perform same steps, but omit the XSL transform.
551 Default value is "raw".
553 zoom: element set is omitted if not set in profile. But only if pz2
554 transform is in effect. Previously the default element set was to "F".
556 zoom: For non-CF targets database arguments are parsed. User may supply
557 db,user=myuser&password=mypass for non-CF targets. These values override
558 what's given the authentication from the target profile.
560 session_shared: fix reference to freed memory. Would occur if a search
561 response had non-surrogate diagnostics.
565 Route may be given for each port in frontend_net.
569 Documentation for zoom filter. Local target profiles may be specified.
571 Fixes for zoom filter.
575 First version with zoom filter.
579 Filter z3950_client may be configured to always send a close APDU
580 to backend target when connection/session is closed. This will only
581 happen if close APDU is not already sent. Enabled by configuration
582 for z3950_client (force_close).
584 Filter virt_db and multi: relay close APDU.
586 Filter virt_db and multi: relay init size parameters
587 preferredMessageSize and maximumRecordSize.
589 Filter sru_z3950: increase init sz parameters from 1MB to 10 MB.
593 RPM package for Metaproxy works for both SLES11 and Centos 5.5.
595 metaproxy-config: exec_prefix, libdir, includedir. Use these variables
596 as determined by configure.
598 RPM: Release includes 'indexdata' name. Use indexdata in release name so
599 this package can be distinguished from other vendors.
603 Fix filter multi: relay idAuthentication parameters.
607 Add metaproxy-config for returning compiler flags, libraries.
611 Fix --with-boost=PREFIX .
615 session_shared: fix use of maintenance thread.
617 Introduce 'start' method for filters and routers. It gets called after
618 configure and after fork, but before processing. This changes API -
619 from libmetaproxy2 to libmetaproxy3.
623 session_shared: ensure backend session is closed if init rejected
626 z3950_client: fix NULL ptr reference that could occur if two clients
627 connected concurrently and if max-sockets was in effect.
631 Fix bug 3497 - Metaproxy unstable while stopping.
633 Fix bug 3495 - SEGV in SRU filter.
637 Filter multi throws diagnostic 'Present Out of Range' when
638 appropriate - rather than returning 0 records.
640 Filter virt_db: fix bad result reuse. Could happen if a result
641 was overriden and a backend did not supported named result sets.
645 Filter log: category access logs diagnostics even if searchStatus
646 or presentStatus is 'success'.
650 The SRU to Z39.50 filter does repeated Z39.50 present requests
651 to fetch all records. Needed when a Z39.50 server returns partial
652 results (due to message size limits).
656 Metaproxy now kills all child processes that are spawned by
657 modules (in case of fork, exec).
661 Debian package now installs /etc/metaproxy/metaproxy.xml which
662 includes all XML files /etc/metaproxy/filters-enabled .
663 The include facility uses YAZ' yaz_xml_include_simple (YAZ 4.0.1).
667 Package based on YAZ version 4 and YAZ++ 1.2.0. It now includes a
668 development package to facilitate 3rd party Metaproxy modules.
670 --- 1.0.23 2010/01/04
672 Filter virt_db: Close backend filter session when Init rejected is received
673 from it (in which case it's not really closed yet). This will ensure we don't
674 run out of resources such as FDs in this case.
676 sru_z3950 filter: Accept any database (including those not listed).
678 --- 1.0.22 2009/12/03
680 Prepare for 64-bit YAZ. yazproxy will still work with YAZ++ 1.1.4 or
681 later which means YAZ 3.0.47 or later.
683 --- 1.0.20 2009/11/19
685 For filter virt_db, the database is a glob pattern and the virtual
686 database sections are consulted in the order given.
688 --- 1.0.19 2009/07/08
690 For filter multi, the target (for routing) may be given as a glob-pattern.
692 More documentation for filters virt_db and multi.
694 Update schema to allow for no database in sru_z3950 filter.
696 --- 1.0.18 2009/06/30
698 Added limit filter to put sleep (penalty) for heavy use.
700 Filter frontend_net may be configured to limit the number of new connections
701 from same IP to some value (connect-max).
703 Fixed the load_balance filter.
705 --- 1.0.17 2009/06/16
707 Fix path for metaproxy executable for Debian init.d script.
709 --- 1.0.16 2009/06/10
711 SRU to Z39.50 filter honors x-username and x-password. If only
712 x-username is given that translates to open authentication (Z39.50v2). If
713 both x-username and x-password is present that translates to idPass
714 authentication (Z39.50v3).
716 New facility to change current working directory (-w).
718 Update to upstream skeleton of init.d script. Should fix bug #2619.
720 Filter session_shared now caches records (used to only cache connections
723 Filter session_shared now invalidates a Z39.50 session if a server
724 returns -1 hits. This facility was also part of yazproxy and gets around
725 a bug in Voyager-based Z39.50 servers.
727 --- 1.0.15 2008/11/18
729 Fixed reference counting bug in Z39.50 client module (could cause SEGV).
731 --- 1.0.14 2008/06/09
733 Fixed the value of SRU record schema in searchRetrieve response. It was set
734 to a fixed value of "dc" before.
736 Serialize identical SRU requests. This is useful if HTTP client software
737 fires identical requests against metaproxy.
739 Allow Z39.50 target to be specified for SRU requests by using SRU extra
740 parameter x-target. Allows SRU to contact arbitrary Z39.50 targets and
741 avoid static configuration. This facility is handled by the sru_z3950 module
742 and the z3950_client module.
744 Allow maximum number of sockets to be used for a Z39.50 client by the
745 use of SRU extra parameter x-max-sockets. This facility is handled by the
746 sru_z3950 module and the z3950_client module.
748 --- 1.0.13.1 2008/02/29
750 Simplified check for Boost libraries.
752 --- 1.0.13 2008/02/29
754 First Debian package.
756 The sru_z9350 filter now recognizes SRU parameter z-target as being
757 a ZURL of the form host/database .
759 Mergetype may be specified for filter 'multi'.
761 --- 1.0.12 2007/09/19
763 Fixed problem in Makefile WRT library specifictions. This could produce
764 linker errors (when they should not happen).
766 Fixed bug #1341: MetaProxy returning different results. Problem was that
767 fix-up of record database did not normalize the database name.
769 Documentation updates for Windows compilation.
771 --- 1.0.11 2007/06/14
773 Fixed problem with logfile being truncated.
775 --- 1.0.10 2007/05/23
777 Fixed bug #1136: Access rights not enforced.
779 Extension for log module. The log category 'access' logs more details.
780 New category 'user-access' added which is simlar to 'access' but adds
781 the Z39.50 user as for all entries in a session.
785 Added support for configurable default/force target/vhost for module Z39.50
790 Implemented filter, session_shared, which optimizes usage of Z39.50
791 sessions and result sets.
793 New filter, record_transform, which converts MARC/XML records.
795 New filter, sru_z3950, which converts SRU to Z39.50 packages.
797 New filter, load_balance, in development.
799 New filter, zeerex_xplain.
801 XML framework for config files started.
803 Master RelaxNG Compact schema's are found in xml/schema/*.rnc,
804 RelaxNG XML schemas and XML Schema's are generated from RNC syntax.
805 XML config files are checked against RNG and XML Schema's.
807 XSLT transformation framework added in xml/xslt/*.xsl, consisting mainly of
808 LOC Marc21 stylesheets found at http://www.loc.gov/marcxml/xslt.
809 Added stylesheet explain2cqlpqftxt.xsl which transforms a standard SRU ZeeReX
810 explain record to YAZ CQL-to-PQF text config file.
814 Added 'timeout' setting for filter frontend_net which specifies the number
815 of seconds a session is idle before it is closed. Default timeout is
820 Database name in records returned set for virt_db/multi filters.
822 Filter session_shared now functional.
824 Log filter can be configured to write to a given file using 'filename'
825 element. Also information category can be specified with 'category'. If
826 filename is omitted, the log filter writes to stdout. See etc/config5.xml
831 Fixed compilation on Windows.
835 Added documentation for the hidenavailable option for the multi filter.
839 Fixed bug #573: Hide errors for individual servers. If the element
840 'hideunavailable' is given in the configuration, individual servers
841 being unavailable are hidden (unless all are unavailable).
843 Fixed bug #574: Database names are recognised case-sensitively.
845 Fixed bug #567: Fix up database name in Name-Plus-Record.
847 Fixed bug #568: Update win/makefile for VS 2005.
849 Fixed bug #569: Some options throws unknown exception.
853 More information about virtual hosts. The 'etc' directory is part of the
858 Build instructions for Windows. NMake makefile part of distribution tar.
864 Filters functional: auth_simple, backend_test, frontend_net, http_file,
865 log, multi, query_rewrite, template, virt_db, z3950_client.
867 Filters in development: session_shared.
869 Pseudo-filters: template, dl