1 Polipo 0.10 (unreleased):
3 Implemented large buffers for headers larger than a chunk's worth.
4 Made the HTTP parser lax by default (ignores unknown headers).
5 Implemented the infrastructure for local POST requests and
6 implemented a real configuration interface (thanks to Theo Honohan).
7 Made timeouts user-configurable and enforced an invariant between
9 Made logging configurable at runtime (thanks to Frank Behrens).
10 Implemented the infrastructure for asynchronous handling of
12 Implemented the ability to redirect instead of returning an
13 error for forbidden URLs.
14 Implemented support for Squid-style redirectors.
15 Implemented User-configurable uncacheable URLs, analogous to
16 forbidden URLs (thanks to Joachim Haga).
17 Implemented the ability to avoid caching pages with cookies
19 Implemented maxPipelineTrain, which can be used to moderate
20 Polipo's eagerness to pipeline.
21 Unified parentHost and parentPort into parentProxy.
22 Ported Polipo to native Windows (thanks to Dan Kennedy).
23 Implemented disableVia.
24 Implemented SOCKS support.
25 Made disableVia the default.
26 Increased the default value of serverMaxSlots to 8.
27 Made the disk cache code quote all characters except for a
28 small number of ``known safe'' ones. This is an incompatible
29 change to the on-disk format.
30 Changed HTTP parser to pass all Pragma headers to the next
31 hop; this should make some media players work through Polipo.
32 Changed the connection scheduler to avoid pipelining when
33 there are idle connections to a given server.
34 Made Polipo obey parentProxy when tunnelling (proxying https).
35 Changed the default value of allowedPorts to be slightly more
37 Implemented tweakables for selectively disabling parts of the
38 configuration interface. Indexing is now disabled by default.
39 Hide variables containing passwords.
41 2 September 2006: Polipo 0.9.10:
43 Fixed a crash when a client closes a connection at just the
45 Fixed a crash that could happen when a server returned
46 incorrect headers and closed the connection at just the wrong
48 Fixed restarting of connections on a server-side read error;
49 this should avoid the ``connection reset by peer'' problem.
50 Corrected work-around for DNS servers that export both AAAA
52 Fix incorrect error handling when overflowing the buffer when
53 saving an entity to disk.
54 IPv6 tweaks for OpenBSD (thanks to Jun-ichiro itojun Hagino).
55 Fixed incorrect error-handling on failure to parse a date.
56 Fixed a deadlock when a tunnel is shut down and the buffer is
58 Fixed an incorrect use of va_start (guaranteed crash on AMD64).
59 Fixed a possible race condition with a heavily pipelining client.
60 Fixed a crash due to incorrect handling of write errors in POST.
62 23 September 2005: Polipo 0.9.9:
64 Fixed a bug that could cause objects to be incorrectly
65 determined to be dynamic (thanks to Joachim B. Haga).
66 Fixed a bug that could cause the local web server to expose
67 files that are not under the local root (thanks to Wessel
69 Fixed an off-by-one bug when parsing NL-terminated headers.
70 Made Polipo forget about failures when finishing on the client
72 Polipo now sends Host headers even when speaking to an upstream
73 proxy. Some proxies take RFC 2616 literally, and require that
74 (thanks to Zoltan Ivanfi).
75 Fixed some bugs in staleness computation, and implemented
76 server-side max-age directives (oops!) (thanks to Charley Chu).
78 24 January 2005: Polipo 0.9.8:
80 Backported the lax HTTP parser from the head branch.
81 Fixed a race condition that could cause a crash if a single
82 object was being superseded twice at the same time.
83 Fixed an incorrect test that caused Polipo to pipeline to all
84 HTTP/1.1 servers, even when they were determined as broken (thanks
86 Implemented maxPipelineTrain.
87 Tweaked for uclibc (thanks to Detlef Riekenberg).
89 27 December 2004: Polipo 0.9.7:
91 Fixed a possible crash when tunnelling.
92 Fixed spurious updates of object sizes when connection is
94 Fixed parsing of URLs with explicit port number (thanks to
96 Fixed a possible crash when exiting POST in error.
97 Fixed a protocol violation when an empty object is not superseded.
99 31 October 2004: Polipo 0.9.6:
100 Fixed a possible crash in ServeObject.
101 Fixed two possible crashes when relaxTransparency is not false.
102 Modified the config file parser to make it possible to have
103 backslashes in atoms.
104 Fixed a violated invariant (leading to a crash) when
106 Fixed a possible crash in ClientFinish when a pipelined
107 request carries no object.
108 Fixed a bug in handling of client-side Expect: 100-continue
109 (reported by Charley Chu).
110 Fixed a scheduling bug that caused server-side requests to be
111 issued in the order opposite to a client-side pipeline (many
112 thanks to Joachim Haga).
113 Abort when the config file couldn't be parsed (thanks to
115 Fixed error handling in POST and PUT requests, which could
116 cause a crash on an I/O error.
118 17 June 2004: Polipo 0.9.5:
119 Implemented upstream proxy authentication (HTTP Basic only).
120 Fixed a possible crash when unable to schedule servicing a
122 Fixed a possible crash when tunnelling (proxying https).
123 Fixed signedness issues to make allowedClients work on PPC
126 10 May 2004: Polipo 0.9.4:
127 Fixed a bug (introduced in 0.9.3) that could cause a crash
128 when the download of an object was interrupted and then immediately
130 Fixed a bug that could cause stale non-200 repliles to be
132 Fixed compilation on FreeBSD 5.2.1 (from Samuel Tardieu).
133 Fixed definition of *_ROOT in diskcache.c
135 6 April 2004: Polipo 0.9.3:
136 Fix incorrect handling of EPIPE when tunnelling; this could
137 cause crashes if a peer closed a connection when we're
139 Fix a race condition that could cause ``error message lost in
140 transit'' errors if a request was cancelled during connect.
141 Check for exitFlag in workToDo: faster reaction to signals.
143 28 March 2004: Polipo 0.9.2:
144 Fixed a bug that could cause crashes when writing out small
145 objects (thanks to Frank Behrens).
146 Made buffer allocation in httpParseHeaders dynamic.
147 Fixed the declaration of pipelineAdditionalRequests.
148 Fixed a bug that could cause empty directories to be missed
149 when expiring the disk cache.
150 Switched the forbidden file to use extended regexps, the
151 previous usage was non-portable (thanks to Frank Behrens).
153 9 March 2004: Polipo 0.9.1:
154 Fixed a bug that could cause chunked encoding failures when
155 going from a 1.0 server to a 1.1 client.
156 Fixed a bug that prevented comments after some config lines
157 (thanks to Tom Huckstep).
158 Fixed a possible buffer overflow in dnsDecodeReply.
159 Fixed portability to systems where rmdir returns EEXIST
160 instead of ENOTEMPTY.
161 Fixed error handling on fork failures in fillSpecialObject.
162 Fixed handling of EINTR in wait in specialRequestHandler.
163 Fixed a bug that caused objects with no headers to fail.
164 Fixed a minor memory leak in the config file parser.
165 Minor build fixes for NetBSD.
166 Added the 68020 and later to the list of architectures that
167 support unaligned access.
169 18 February 2004: Polipo 0.9:
170 Reworked the DNS code to parse ids even when a reply's qdcount
171 is 0. No longer falls back to gethostbyname when DNS server
173 Made the DNS code parse resolv.conf.
175 11 Feburary 2004: Polipo 0.8.99.3:
176 Minor changes to work around Cygwin mis-design.
177 Fixed printing of n-state variables.
178 Fixed proxyOffline handling.
179 Fixed a bug that would cause errors to be reported with the
181 Fixed a bug that would cause ``object vanished'' errors when
182 using HEAD for revalidation.
183 Fixed a bug that could cause failed requests due to ``client
184 reset connection'' errors.
186 24 January 2004: Polipo 0.8.99.2:
187 Cleaned up authentication.
188 Made authenticated replies cachable in one of the cases allowed
190 Fixed a bug that could, under some circumstances, cause a
191 password-protected object to be cached and returned to a
192 non-authorized client.
193 Implemented 100-continue, controlled by the variable expectContinue.
194 Implemented tristate, 4- and 5-state variables. Split
195 proxyOffline into proxyOffline and relaxTransparency. This is
196 an incompatible change to the config file format.
197 Cleaned up the handling of allowed port ranges. New
198 configuration variable allowedPorts (and new type intlist).
199 Implemented tunnelling through the CONNECT method (https
201 Will now read a request body on error (avoids a deadlock).
202 Reworked the PUT/POST code to read the reply eagerly rather
203 than waiting for the write to finish (avoids writing the full
204 body on error and avoids the same deadlock as above).
205 Made server addresses sticky: will now remember which of a
206 servers addresses worked last time, and use that address first.
208 16 january 2004: Polipo 0.8.99.1:
209 Fixed an expiry bug that caused DNS queries to be repeated on
211 Added the variable ``preciseExpiry'' that prevents trusting
212 the mtime during expiry.
214 14 January 2004: Polipo 0.8.99.0:
215 Implemented IP address-based authentication.
216 Implemented HTTP ``basic'' authentication.
217 Implemented variable body offsets for the on-disk cache; this
218 makes the on-disk cache format incompatible with previous versions.
219 Made the number of server slots configurable.
220 Partially rewrote the disk cache code.
221 Fixed a file descriptor leak in the early error handling code.
222 Fixed a bug in the base64 encoder; this makes the on-disk cache
223 format incompatible with previous versions.
224 Implemented proper reporting for 100-Continue replies
225 (100-Continue is not implemented yet).
226 Made the number of server slots configurable at runtime.
228 9 January 2004: Polipo 0.8.4:
229 Log file is now line buffered.
230 Will reopen the log file on SIGUSR1 and SIGUSR2.
231 censoredHeaders now defaults to none, and censorReferer to 0.
232 Fixed a memory allocation bug that could cause a crash.
234 21 December 2003: Polipo 0.8.3:
235 Fixed a potential buffer overflow on C89 systems in snnprintf.
236 Fixed checking of Via headers.
237 Added configurable log file.
238 Added code to run as a daemon.
239 Made the resolver grok names ending in a ``.''.
240 Changed Makefile to fit Debian better.
242 7 December 2003: Polipo 0.8.2:
243 Implemented a version of fts for SVR4 systems.
244 Implemented a version of mktime_gmt that doesn't use setenv.
245 Fixed code used to determine FQDN.
246 More unaligned access fixes.
247 Disabled queryIPv6 when there is no IPv6 support in kernel.
248 Enabled IPv6 support by default on FreeBSD and NetBSD.
250 2 December 2003: Polipo 0.8.1:
252 Fix a possible crash when doing a POST on a busy server.
253 Fix a possible crash when socket(2) fails; implement switching
254 to a different address when socket(2) fails (e.g. when
255 accessing a double-stack host from an IPv4-only client).
256 Fix a problem with servers stuck in the ``probing'' state.
257 Work around a bug in Konqueror that strips question marks from
259 Fix incorrect error handling when dealing with connection
261 Fix a compile problem in dns.c.
262 Remove dependency on SSL, include MD5 code instead.
263 Fix signedness of s_maxage.
265 23 November 2003: Polipo 0.8:
267 IPv6 support, on both the client and server side, including
268 DNS support and RFC 2732.
269 Reworked the DNS code.
270 Made it possible to compile without any particular resolver
271 and without the on-disk cache.
272 Fixed a problem with the chunking encoder.
273 Made the config file parser grok octal and hex values, allowed
274 colons and tildes in unquoted strings.
275 Implemented tilde expansion in some config variables.
276 Made Polipo slightly less eager to honour range requests for
277 dynamic instances. Marked generated objects as dynamic. These
278 changes should solve some of the problems with PMM.
279 Implemented the If-Range header (on both the client and server
281 Implemented support for range requests smaller than one chunk
282 (and hence for pmmSize being smaller than CHUNK_SIZE).
283 Fixed a bug that caused a deadlock (until a server timeout)
284 when doing a POST/PUT request with no free connection slots.
285 Fixed a problem when diskCacheRoot didn't end in `/'.
286 Fixed a refcounting problem that could cause Polipo to crash
288 Fixed an alignment problem that could cause crashes on
289 architectures that don't like unaligned memory accesses
290 (thanks to Rob Byrnes).
291 Fixed a bug with the disk cache that caused spurious ``disk
292 entry changed behind our back'' warnings (and in principle
293 could cause data corruption, although that's very unlikely).
294 Made opening connections slightly less aggressive -- Polipo
295 would sometimes open two connections where only one was needed.
296 Modified client-side code to notice client shutdowns earlier
297 and notify the server side straight away.
299 7 October 2003: Polipo 0.7
301 Made the Request function a method of objects.
302 Fixed a bug that could sometimes cause data corruption.
303 Fixed a bug that could cause sending of incorrect data to
304 the client on a range request.
305 Fixed POST and PUT requests.
306 Fixed a bug that could sometimes cause a POST request to use a
308 Included code to do poor man's multiplexing.
309 Will now open multiple connections to non-persistent servers.
310 Fixed a bug that could lead to idle connections dying without
312 Fixed probing for pipelining.
313 Actually use the new time function introduced in 0.5.
314 Fixed a bug in strcasecmp_n.
315 ForbiddenFile can now be a directory.
317 26 September 2003: Polipo 0.6
319 Fixed precondition handling.
320 Fixed a bug that could lead to lockups when revalidating an
323 27 June 2003: Polipo 0.5
325 Made the presence of a reader or writer explicit on the client
327 Reworked closing client connections.
328 Reworked reporting of server-side errors.
329 Made buffer allocation lazy; idle clients and servers no
330 longer use up buffers.
331 Reworked UTC time handling to use timegm(3) when available.
333 12 March 2003: Polipo 0.4
335 Implemented expiry of the on-disk cache.
336 Implemented reliable aborting of connections; Polipo should no
337 longer deadlock when a server falls into a black hole.
338 Changed direct reads to be more aggressive by using readv in
340 Changed serving of chunked data to be more eager about
341 serving a chunk's end marker.
342 Implemented better reporting of DNS errors.
343 Fixed a deadlock with pipelining on the client side.
344 Removed most of the remaining copies when reading on the
346 Fixed a bug that caused some headers to disappear in transit.
347 Fixed a possible livelock when reading chunked encoding.
348 Fixed an overflow when pipelining on the server side.
349 Fixed generation of indexes from the on-disk cache.
350 Fixed a DNS crash when falling back on gethostbyname.
352 1 March 2003: Polipo 0.3
354 Implemented retrying of timed-out DNS requests.
355 Implemented configuration mechanisms for case-insensitive
356 atoms, time values and atom lists; censoredHeaders can now be
358 No longer censors User-Agent. Blame Beppe and Alain.
359 Changed the handling of hop-by-hop HTTP headers to deal with
360 multiple Connection headers.
361 Made client-side errors and successful revalidation no longer
362 close the connection.
363 Fixed a bug that caused the allocation of an extraneous 2MB (!)
364 at startup. Polipo can run in 100KB once again.
365 Fixed a refcounting bug and some incorrect frees that could
366 lead to crashes when recovering from a server-side error.
367 Fixed a bug with POST/PUT that could trigger a failed assertion.
368 Made sure that POST/PUT don't get scheduled in multiple pieces.
370 17 February 2003: Polipo 0.2
372 Fixed an incorrect assertion that could cause crashes when the
374 Fixed (hopefully) logic for 304 replies.
375 Minor tweaks to scheduling that cause some speed increase when the
376 client is pipelining and the server is fast.
377 Minor bug fixes and cleanups.
378 Macro-ified do_log and friends.
380 3 February 2003: Polipo 0.1
382 Initial public release.