9 POST method is supported
11 The protocol 0 / HTTP callback can now get two new kinds of callback,
12 LWS_CALLBACK_HTTP_BODY (in and len are a chunk of the body of the HTTP request)
13 and LWS_CALLBACK_HTTP_BODY_COMPLETION (the expected amount of body has arrived
14 and been passed to the user code already). These callbacks are used with the
15 post method (see the test server for details).
17 The period between the HTTP header completion and the completion of the body
18 processing is protected by a 5s timeout.
20 The chunks are stored in a malloc'd buffer of size protocols[0].rx_buffer_size.
23 New server option you can enable from user code
24 LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT allows non-SSL connections to
25 also be accepted on an SSL listening port. It's disabled unless you enable
32 Extra optional argument to libwebsockets_serve_http_file() allows injecion
33 of HTTP headers into the canned response. Eg, cookies may be added like
34 that without getting involved in having to send the header by hand.
38 v1.23-chrome32-firefox24
39 ========================
42 CMakeLists.txt | 573 ++++++++----
43 COPYING | 503 -----------
44 INSTALL | 365 --------
46 README.build | 371 ++------
48 autogen.sh | 1578 ---------------------------------
50 cmake/FindGit.cmake | 163 ++++
51 cmake/FindOpenSSLbins.cmake | 15 +-
52 cmake/UseRPMTools.cmake | 176 ++++
53 config.h.cmake | 25 +-
54 configure.ac | 226 -----
55 cross-arm-linux-gnueabihf.cmake | 28 +
56 lib/Makefile.am | 89 --
57 lib/base64-decode.c | 98 +-
58 lib/client-handshake.c | 123 ++-
59 lib/client-parser.c | 19 +-
60 lib/client.c | 145 ++-
61 lib/daemonize.c | 4 +-
62 lib/extension.c | 2 +-
63 lib/getifaddrs.h | 4 +-
64 lib/handshake.c | 76 +-
65 lib/libwebsockets.c | 491 ++++++----
66 lib/libwebsockets.h | 164 ++--
67 lib/output.c | 214 ++++-
68 lib/parsers.c | 102 +--
69 lib/private-libwebsockets.h | 66 +-
70 lib/server-handshake.c | 5 +-
73 libwebsockets-api-doc.html | 249 +++---
74 libwebsockets.pc.in | 11 -
75 libwebsockets.spec | 14 +-
77 scripts/FindLibWebSockets.cmake | 33 +
78 scripts/kernel-doc | 1 +
79 test-server/Makefile.am | 131 ---
80 test-server/leaf.jpg | Bin 0 -> 2477518 bytes
81 test-server/test-client.c | 78 +-
82 test-server/test-echo.c | 33 +-
83 test-server/test-fraggle.c | 26 +-
84 test-server/test-ping.c | 15 +-
85 test-server/test-server.c | 197 +++-
86 test-server/test.html | 5 +-
87 win32port/win32helpers/gettimeofday.c | 74 +-
88 win32port/win32helpers/websock-w32.h | 6 +-
89 48 files changed, 2493 insertions(+), 4212 deletions(-)
95 - You can now call libwebsocket_callback_on_writable() on http connectons,
96 and get a LWS_CALLBACK_HTTP_WRITEABLE callback, the same way you can
97 regulate writes with a websocket protocol connection.
99 - A new member in the context creation parameter struct "ssl_cipher_list" is
100 added, replacing CIPHERS_LIST_STRING. NULL means use the ssl library
101 default list of ciphers.
103 - Not really an api addition, but libwebsocket_service_fd() will now zero
104 the revents field of the pollfd it was called with if it handled the
105 descriptor. So you can tell if it is a non-lws fd by checking revents
106 after the service call... if it's still nonzero, the descriptor
107 belongs to you and you need to take care of it.
109 - libwebsocket_rx_flow_allow_all_protocol(protocol) will unthrottle all
110 connections with the established protocol. It's designed to be
111 called from user server code when it sees it can accept more input
112 and may have throttled connections using the server rx flow apis
113 while it was unable to accept any other input The user server code
114 then does not have to try to track while connections it choked, this
115 will free up all of them in one call.
117 - there's a new, optional callback LWS_CALLBACK_CLOSED_HTTP which gets
118 called when an HTTP protocol socket closes
120 - for LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION callback, the user_space alloc
121 has already been done before the callback happens. That means we can
122 use the user parameter to the callback to contain the user pointer, and
123 move the protocol name to the "in" parameter. The docs for this
124 callback are also updated to reflect how to check headers in there.
126 - libwebsocket_client_connect() is now properly nonblocking and async. See
127 README.coding and test-client.c for information on the callbacks you
128 can rely on controlling the async connection period with.
130 - if your OS does not support the http_proxy environment variable convention
131 (eg, reportedly OSX), you can use a new api libwebsocket_set_proxy()
132 to set the proxy details inbetween context creation and the connection
133 action. For OSes that support http_proxy, that's used automatically.
138 - the external poll callbacks now get the socket descriptor coming from the
139 "in" parameter. The user parameter provides the user_space for the
140 wsi as it normally does on the other callbacks.
141 LWS_CALLBACK_FILTER_NETWORK_CONNECTION also has the socket descriptor
142 delivered by @in now instead of @user.
144 - libwebsocket_write() now returns -1 for error, or the amount of data
145 actually accepted for send. Under load, the OS may signal it is
146 ready to send new data on the socket, but have only a restricted
147 amount of memory to buffer the packet compared to usual.
153 - libwebsocket_ensure_user_space() is removed from the public api, if you
154 were using it to get user_space, you need to adapt your code to only
155 use user_space inside the user callback.
157 - CIPHERS_LIST_STRING is removed
159 - autotools build has been removed. See README.build for info on how to
160 use CMake for your platform
163 v1.21-chrome26-firefox18
164 ========================
166 - Fixes buffer overflow bug in max frame size handling if you used the
167 default protocol buffer size. If you declared rx_buffer_size in your
168 protocol, which is recommended anyway, your code was unaffected.
170 v1.2-chrome26-firefox18
171 =======================
177 CMakeLists.txt | 544 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
178 LICENSE | 526 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
181 README.build | 258 ++++++++++++++++++++++++++++++++-----
182 README.coding | 52 ++++++++
183 changelog | 136 ++++++++++++++++++++
184 cmake/FindOpenSSLbins.cmake | 33 +++++
185 config.h.cmake | 173 +++++++++++++++++++++++++
186 configure.ac | 22 +++-
187 lib/Makefile.am | 20 ++-
188 lib/base64-decode.c | 2 +-
189 lib/client-handshake.c | 190 +++++++++++-----------------
190 lib/client-parser.c | 88 +++++++------
191 lib/client.c | 384 ++++++++++++++++++++++++++++++-------------------------
192 lib/daemonize.c | 32 +++--
193 lib/extension-deflate-frame.c | 58 +++++----
194 lib/extension-deflate-stream.c | 19 ++-
195 lib/extension-deflate-stream.h | 4 +-
196 lib/extension.c | 11 +-
197 lib/getifaddrs.c | 315 +++++++++++++++++++++++-----------------------
198 lib/getifaddrs.h | 30 ++---
199 lib/handshake.c | 124 +++++++++++-------
200 lib/libwebsockets.c | 736 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------------
201 lib/libwebsockets.h | 237 ++++++++++++++++++++++------------
202 lib/output.c | 192 +++++++++++-----------------
203 lib/parsers.c | 966 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------------------------------------------
204 lib/private-libwebsockets.h | 225 +++++++++++++++++++++------------
205 lib/server-handshake.c | 82 ++++++------
206 lib/server.c | 96 +++++++-------
207 libwebsockets-api-doc.html | 189 ++++++++++++++++++----------
208 libwebsockets.spec | 17 +--
209 test-server/attack.sh | 148 ++++++++++++++++++++++
210 test-server/test-client.c | 125 +++++++++---------
211 test-server/test-echo.c | 31 +++--
212 test-server/test-fraggle.c | 32 ++---
213 test-server/test-ping.c | 52 ++++----
214 test-server/test-server.c | 129 ++++++++++++-------
215 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj | 279 ----------------------------------------
216 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj.filters | 23 +++-
217 41 files changed, 4398 insertions(+), 2219 deletions(-)
223 - lws_get_library_version() returns a const char * with a string like
224 "1.1 9e7f737", representing the library version from configure.ac
225 and the git HEAD hash the library was built from
227 - TCP Keepalive can now optionally be applied to all lws sockets, on Linux
228 also with controllable timeout, number of probes and probe interval.
229 (On BSD type OS, you can only use system default settings for the
230 timing and retries, although enabling it is supported by setting
231 ka_time to nonzero, the exact value has no meaning.)
232 This enables detection of idle connections which are logically okay,
233 but are in fact dead, due to network connectivity issues at the server,
234 client, or any intermediary. By default it's not enabled, but you
235 can enable it by setting a non-zero timeout (in seconds) at the new
236 ka_time member at context creation time.
238 - Two new optional user callbacks added, LWS_CALLBACK_PROTOCOL_DESTROY which
239 is called one-time per protocol as the context is being destroyed, and
240 LWS_CALLBACK_PROTOCOL_INIT which is called when the context is created
241 and the protocols are added, again it's a one-time affair.
242 This lets you manage per-protocol allocations properly including
243 cleaning up after yourself when the server goes down.
248 - libwebsocket_create_context() has changed from taking a ton of parameters
249 to just taking a pointer to a struct containing the parameters. The
250 struct lws_context_creation_info is in libwebsockets.h, the members
251 are in the same order as when they were parameters to the call
252 previously. The test apps are all updated accordingly so you can
253 see example code there.
255 - Header tokens are now deleted after the websocket connection is
256 established. Not just the header data is saved, but the pointer and
257 length array is also removed from (union) scope saving several hundred
258 bytes per connection once it is established
260 - struct libwebsocket_protocols has a new member rx_buffer_size, this
261 controls rx buffer size per connection of that protocol now. Sources
262 for apps built against older versions of the library won't declare
263 this in their protocols, defaulting it to 0. Zero buffer is legal,
264 it causes a default buffer to be allocated (currently 4096)
266 If you want to receive only atomic frames in your user callback, you
267 should set this to greater than your largest frame size. If a frame
268 comes that exceeds that, no error occurs but the callback happens as
269 soon as the buffer limit is reached, and again if it is reached again
270 or the frame completes. You can detect that has happened by seeing
271 there is still frame content pending using
272 libwebsockets_remaining_packet_payload()
274 By correctly setting this, you can save a lot of memory when your
275 protocol has small frames (see the test server and client sources).
277 - LWS_MAX_HEADER_LEN now defaults to 1024 and is the total amount of known
278 header payload lws can cope with, that includes the GET URL, origin
279 etc. Headers not understood by lws are ignored and their payload
280 not included in this.
286 - The configuration-time option MAX_USER_RX_BUFFER has been replaced by a
287 buffer size chosen per-protocol. For compatibility, there's a default
288 of 4096 rx buffer, but user code should set the appropriate size for
291 - LWS_INITIAL_HDR_ALLOC and LWS_ADDITIONAL_HDR_ALLOC are no longer needed
292 and have been removed. There's a new header management scheme that
293 handles them in a much more compact way.
295 - libwebsockets_hangup_on_client() is removed. If you want to close the
296 connection you must do so from the user callback and by returning
299 - libwebsocket_close_and_free_session() is now private to the library code
300 only and not exposed for user code. If you want to close the
301 connection, you must do so from the user callback by returning -1
308 - Cmake project file added, aimed initially at Windows support: this replaces
309 the visual studio project files that were in the tree until now.
311 - CyaSSL now supported in place of OpenSSL (--use-cyassl on configure)
313 - PATH_MAX or MAX_PATH no longer needed
315 - cutomizable frame rx buffer size by protocol
317 - optional TCP keepalive so dead peers can be detected, can be enabled at
318 context-creation time
320 - valgrind-clean: no SSL or CyaSSL: completely clean. With OpenSSL, 88 bytes
321 lost at OpenSSL library init and symptomless reports of uninitialized
322 memory usage... seems to be a known and ignored problem at OpenSSL
324 - By default debug is enabled and the library is built for -O0 -g to faclitate
325 that. Use --disable-debug configure option to build instead with -O4
326 and no -g (debug info), obviously providing best performance and
329 - 1.0 introduced some code to try to not deflate small frames, however this
330 seems to break when confronted with a mixture of frames above and
331 below the threshold, so it's removed. Veto the compression extension
332 in your user callback if you will typically have very small frames.
334 - There are many memory usage improvements, both a reduction in malloc/
335 realloc and architectural changes. A websocket connection now
336 consumes only 296 bytes with SSL or 272 bytes without on x86_64,
337 during header processing an additional 1262 bytes is allocated in a
338 single malloc, but is freed when the websocket connection starts.
339 The RX frame buffer defined by the protocol in user
340 code is also allocated per connection, this represents the largest
341 frame you can receive atomically in that protocol.
343 - On ARM9 build, just http+ws server no extensions or ssl, <12Kbytes .text
344 and 112 bytes per connection (+1328 only during header processing)
347 v1.1-chrome26-firefox18
348 =======================
354 README-test-server | 291 ---
355 README.build | 239 ++
356 README.coding | 138 ++
358 README.test-apps | 272 +++
359 configure.ac | 116 +-
360 lib/Makefile.am | 55 +-
361 lib/base64-decode.c | 5 +-
362 lib/client-handshake.c | 121 +-
363 lib/client-parser.c | 394 ++++
364 lib/client.c | 807 +++++++
365 lib/daemonize.c | 212 ++
366 lib/extension-deflate-frame.c | 132 +-
367 lib/extension-deflate-stream.c | 12 +-
368 lib/extension-x-google-mux.c | 1223 ----------
369 lib/extension-x-google-mux.h | 96 -
370 lib/extension.c | 8 -
371 lib/getifaddrs.c | 271 +++
372 lib/getifaddrs.h | 76 +
373 lib/handshake.c | 582 +----
374 lib/libwebsockets.c | 2493 ++++++---------------
375 lib/libwebsockets.h | 115 +-
377 lib/minilex.c | 440 ++++
378 lib/output.c | 628 ++++++
379 lib/parsers.c | 2016 +++++------------
380 lib/private-libwebsockets.h | 284 +--
381 lib/server-handshake.c | 275 +++
382 lib/server.c | 377 ++++
383 libwebsockets-api-doc.html | 300 +--
385 test-server/Makefile.am | 111 +-
386 test-server/libwebsockets.org-logo.png | Bin 0 -> 7029 bytes
387 test-server/test-client.c | 45 +-
388 test-server/test-echo.c | 330 +++
389 test-server/test-fraggle.c | 20 +-
390 test-server/test-ping.c | 22 +-
391 test-server/test-server-extpoll.c | 554 -----
392 test-server/test-server.c | 349 ++-
393 test-server/test.html | 3 +-
394 win32port/zlib/ZLib.vcxproj | 749 ++++---
395 win32port/zlib/ZLib.vcxproj.filters | 188 +-
396 win32port/zlib/adler32.c | 348 ++-
397 win32port/zlib/compress.c | 160 +-
398 win32port/zlib/crc32.c | 867 ++++----
399 win32port/zlib/crc32.h | 882 ++++----
400 win32port/zlib/deflate.c | 3799 +++++++++++++++-----------------
401 win32port/zlib/deflate.h | 688 +++---
402 win32port/zlib/gzclose.c | 50 +-
403 win32port/zlib/gzguts.h | 325 ++-
404 win32port/zlib/gzlib.c | 1157 +++++-----
405 win32port/zlib/gzread.c | 1242 ++++++-----
406 win32port/zlib/gzwrite.c | 1096 +++++----
407 win32port/zlib/infback.c | 1272 ++++++-----
408 win32port/zlib/inffast.c | 680 +++---
409 win32port/zlib/inffast.h | 22 +-
410 win32port/zlib/inffixed.h | 188 +-
411 win32port/zlib/inflate.c | 2976 +++++++++++++------------
412 win32port/zlib/inflate.h | 244 +-
413 win32port/zlib/inftrees.c | 636 +++---
414 win32port/zlib/inftrees.h | 124 +-
415 win32port/zlib/trees.c | 2468 +++++++++++----------
416 win32port/zlib/trees.h | 256 +--
417 win32port/zlib/uncompr.c | 118 +-
418 win32port/zlib/zconf.h | 934 ++++----
419 win32port/zlib/zlib.h | 3357 ++++++++++++++--------------
420 win32port/zlib/zutil.c | 642 +++---
421 win32port/zlib/zutil.h | 526 ++---
422 69 files changed, 19556 insertions(+), 20145 deletions(-)
427 - libwebsockets_serve_http_file() now takes a context as first argument
429 - libwebsockets_get_peer_addresses() now takes a context and wsi as first
436 - lwsl_...() logging apis, default to stderr but retargetable by user code;
437 may be used also by user code
439 - lws_set_log_level() set which logging apis are able to emit (defaults to
440 notice, warn, err severities), optionally set the emit callback
442 - lwsl_emit_syslog() helper callback emits to syslog
444 - lws_daemonize() helper code that forks the app into a headless daemon
445 properly, maintains a lock file with pid in suitable for sysvinit etc to
448 - LWS_CALLBACK_HTTP_FILE_COMPLETION callback added since http file
449 transfer is now asynchronous (see test server code)
451 - lws_frame_is_binary() from a wsi pointer, let you know if the received
452 data was sent in BINARY mode
458 - libwebsockets_fork_service_loop() - no longer supported (had intractable problems)
459 arrange your code to act from the user callback instead from same
460 process context as the service loop
462 - libwebsockets_broadcast() - use libwebsocket_callback_on_writable[_all_protocol]()
463 instead from same process context as the service loop. See the test apps
466 - x-google-mux() removed until someone wants it
468 - pre -v13 (ancient) protocol support removed
474 - echo test server and client compatible with echo.websocket.org added
476 - many new configure options (see README.build) to reduce footprint of the
477 library to what you actually need, eg, --without-client and
480 - http + websocket server can build to as little as 12K .text for ARM
482 - no more MAX_CLIENTS limitation; adapts to support the max number of fds
483 allowed to the process by ulimit, defaults to 1024 on Fedora and
484 Ubuntu. Use ulimit to control this without needing to configure
485 the library. Code here is smaller and faster.
487 - adaptive ratio of listen socket to connection socket service allows
488 good behaviour under Apache ab test load. Tested with thousands
489 of simultaneous connections
491 - reduction in per-connection memory footprint by moving to a union to hold
492 mutually-exclusive state for the connection
494 - robustness: Out of Memory taken care of for all allocation code now
496 - internal getifaddrs option if your toolchain lacks it (some uclibc)
498 - configurable memory limit for deflate operations
500 - improvements in SSL code nonblocking operation, possible hang solved,
501 some SSL operations broken down into pollable states so there is
502 no library blocking, timeout coverage for SSL_connect
504 - extpoll test server merged into single test server source
506 - robustness: library should deal with all recoverable socket conditions
508 - rx flowcontrol for backpressure notification fixed and implmeneted
509 correctly in the test server
511 - optimal lexical parser added for header processing; all headers in a
512 single 276-byte state table
514 - latency tracking api added (configure --with-latency)
516 - Improved in-tree documentation, REAME.build, README.coding,
517 README.test-apps, changelog
522 v1.0-chrome25-firefox17 (6cd1ea9b005933f)