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
29 Two new callbacks are added in protocols[0] that are optional for allowing
30 limited thread access to libwebsockets, LWS_CALLBACK_LOCK_POLL and
31 LWS_CALLBACK_UNLOCK_POLL.
33 If you use them, they protect internal and external poll list changes, but if
34 you want to use external thread access to libwebsocket_callback_on_writable()
35 you have to implement your locking here even if you don't use external
38 If you will use another thread for this, take a lot of care about managing
39 your list of live wsi by doing it from ESTABLISHED and CLOSED callbacks
40 (with your own locking).
47 Extra optional argument to libwebsockets_serve_http_file() allows injecion
48 of HTTP headers into the canned response. Eg, cookies may be added like
49 that without getting involved in having to send the header by hand.
51 A new info member http_proxy_address may be used at context creation time to
52 set the http proxy. If non-NULL, it overrides http_proxy environment var.
55 v1.23-chrome32-firefox24
56 ========================
59 CMakeLists.txt | 573 ++++++++----
60 COPYING | 503 -----------
61 INSTALL | 365 --------
63 README.build | 371 ++------
65 autogen.sh | 1578 ---------------------------------
67 cmake/FindGit.cmake | 163 ++++
68 cmake/FindOpenSSLbins.cmake | 15 +-
69 cmake/UseRPMTools.cmake | 176 ++++
70 config.h.cmake | 25 +-
71 configure.ac | 226 -----
72 cross-arm-linux-gnueabihf.cmake | 28 +
73 lib/Makefile.am | 89 --
74 lib/base64-decode.c | 98 +-
75 lib/client-handshake.c | 123 ++-
76 lib/client-parser.c | 19 +-
77 lib/client.c | 145 ++-
78 lib/daemonize.c | 4 +-
79 lib/extension.c | 2 +-
80 lib/getifaddrs.h | 4 +-
81 lib/handshake.c | 76 +-
82 lib/libwebsockets.c | 491 ++++++----
83 lib/libwebsockets.h | 164 ++--
84 lib/output.c | 214 ++++-
85 lib/parsers.c | 102 +--
86 lib/private-libwebsockets.h | 66 +-
87 lib/server-handshake.c | 5 +-
90 libwebsockets-api-doc.html | 249 +++---
91 libwebsockets.pc.in | 11 -
92 libwebsockets.spec | 14 +-
94 scripts/FindLibWebSockets.cmake | 33 +
95 scripts/kernel-doc | 1 +
96 test-server/Makefile.am | 131 ---
97 test-server/leaf.jpg | Bin 0 -> 2477518 bytes
98 test-server/test-client.c | 78 +-
99 test-server/test-echo.c | 33 +-
100 test-server/test-fraggle.c | 26 +-
101 test-server/test-ping.c | 15 +-
102 test-server/test-server.c | 197 +++-
103 test-server/test.html | 5 +-
104 win32port/win32helpers/gettimeofday.c | 74 +-
105 win32port/win32helpers/websock-w32.h | 6 +-
106 48 files changed, 2493 insertions(+), 4212 deletions(-)
112 - You can now call libwebsocket_callback_on_writable() on http connectons,
113 and get a LWS_CALLBACK_HTTP_WRITEABLE callback, the same way you can
114 regulate writes with a websocket protocol connection.
116 - A new member in the context creation parameter struct "ssl_cipher_list" is
117 added, replacing CIPHERS_LIST_STRING. NULL means use the ssl library
118 default list of ciphers.
120 - Not really an api addition, but libwebsocket_service_fd() will now zero
121 the revents field of the pollfd it was called with if it handled the
122 descriptor. So you can tell if it is a non-lws fd by checking revents
123 after the service call... if it's still nonzero, the descriptor
124 belongs to you and you need to take care of it.
126 - libwebsocket_rx_flow_allow_all_protocol(protocol) will unthrottle all
127 connections with the established protocol. It's designed to be
128 called from user server code when it sees it can accept more input
129 and may have throttled connections using the server rx flow apis
130 while it was unable to accept any other input The user server code
131 then does not have to try to track while connections it choked, this
132 will free up all of them in one call.
134 - there's a new, optional callback LWS_CALLBACK_CLOSED_HTTP which gets
135 called when an HTTP protocol socket closes
137 - for LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION callback, the user_space alloc
138 has already been done before the callback happens. That means we can
139 use the user parameter to the callback to contain the user pointer, and
140 move the protocol name to the "in" parameter. The docs for this
141 callback are also updated to reflect how to check headers in there.
143 - libwebsocket_client_connect() is now properly nonblocking and async. See
144 README.coding and test-client.c for information on the callbacks you
145 can rely on controlling the async connection period with.
147 - if your OS does not support the http_proxy environment variable convention
148 (eg, reportedly OSX), you can use a new api libwebsocket_set_proxy()
149 to set the proxy details inbetween context creation and the connection
150 action. For OSes that support http_proxy, that's used automatically.
155 - the external poll callbacks now get the socket descriptor coming from the
156 "in" parameter. The user parameter provides the user_space for the
157 wsi as it normally does on the other callbacks.
158 LWS_CALLBACK_FILTER_NETWORK_CONNECTION also has the socket descriptor
159 delivered by @in now instead of @user.
161 - libwebsocket_write() now returns -1 for error, or the amount of data
162 actually accepted for send. Under load, the OS may signal it is
163 ready to send new data on the socket, but have only a restricted
164 amount of memory to buffer the packet compared to usual.
170 - libwebsocket_ensure_user_space() is removed from the public api, if you
171 were using it to get user_space, you need to adapt your code to only
172 use user_space inside the user callback.
174 - CIPHERS_LIST_STRING is removed
176 - autotools build has been removed. See README.build for info on how to
177 use CMake for your platform
180 v1.21-chrome26-firefox18
181 ========================
183 - Fixes buffer overflow bug in max frame size handling if you used the
184 default protocol buffer size. If you declared rx_buffer_size in your
185 protocol, which is recommended anyway, your code was unaffected.
187 v1.2-chrome26-firefox18
188 =======================
194 CMakeLists.txt | 544 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
195 LICENSE | 526 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
198 README.build | 258 ++++++++++++++++++++++++++++++++-----
199 README.coding | 52 ++++++++
200 changelog | 136 ++++++++++++++++++++
201 cmake/FindOpenSSLbins.cmake | 33 +++++
202 config.h.cmake | 173 +++++++++++++++++++++++++
203 configure.ac | 22 +++-
204 lib/Makefile.am | 20 ++-
205 lib/base64-decode.c | 2 +-
206 lib/client-handshake.c | 190 +++++++++++-----------------
207 lib/client-parser.c | 88 +++++++------
208 lib/client.c | 384 ++++++++++++++++++++++++++++++-------------------------
209 lib/daemonize.c | 32 +++--
210 lib/extension-deflate-frame.c | 58 +++++----
211 lib/extension-deflate-stream.c | 19 ++-
212 lib/extension-deflate-stream.h | 4 +-
213 lib/extension.c | 11 +-
214 lib/getifaddrs.c | 315 +++++++++++++++++++++++-----------------------
215 lib/getifaddrs.h | 30 ++---
216 lib/handshake.c | 124 +++++++++++-------
217 lib/libwebsockets.c | 736 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------------
218 lib/libwebsockets.h | 237 ++++++++++++++++++++++------------
219 lib/output.c | 192 +++++++++++-----------------
220 lib/parsers.c | 966 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------------------------------------------
221 lib/private-libwebsockets.h | 225 +++++++++++++++++++++------------
222 lib/server-handshake.c | 82 ++++++------
223 lib/server.c | 96 +++++++-------
224 libwebsockets-api-doc.html | 189 ++++++++++++++++++----------
225 libwebsockets.spec | 17 +--
226 test-server/attack.sh | 148 ++++++++++++++++++++++
227 test-server/test-client.c | 125 +++++++++---------
228 test-server/test-echo.c | 31 +++--
229 test-server/test-fraggle.c | 32 ++---
230 test-server/test-ping.c | 52 ++++----
231 test-server/test-server.c | 129 ++++++++++++-------
232 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj | 279 ----------------------------------------
233 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj.filters | 23 +++-
234 41 files changed, 4398 insertions(+), 2219 deletions(-)
240 - lws_get_library_version() returns a const char * with a string like
241 "1.1 9e7f737", representing the library version from configure.ac
242 and the git HEAD hash the library was built from
244 - TCP Keepalive can now optionally be applied to all lws sockets, on Linux
245 also with controllable timeout, number of probes and probe interval.
246 (On BSD type OS, you can only use system default settings for the
247 timing and retries, although enabling it is supported by setting
248 ka_time to nonzero, the exact value has no meaning.)
249 This enables detection of idle connections which are logically okay,
250 but are in fact dead, due to network connectivity issues at the server,
251 client, or any intermediary. By default it's not enabled, but you
252 can enable it by setting a non-zero timeout (in seconds) at the new
253 ka_time member at context creation time.
255 - Two new optional user callbacks added, LWS_CALLBACK_PROTOCOL_DESTROY which
256 is called one-time per protocol as the context is being destroyed, and
257 LWS_CALLBACK_PROTOCOL_INIT which is called when the context is created
258 and the protocols are added, again it's a one-time affair.
259 This lets you manage per-protocol allocations properly including
260 cleaning up after yourself when the server goes down.
265 - libwebsocket_create_context() has changed from taking a ton of parameters
266 to just taking a pointer to a struct containing the parameters. The
267 struct lws_context_creation_info is in libwebsockets.h, the members
268 are in the same order as when they were parameters to the call
269 previously. The test apps are all updated accordingly so you can
270 see example code there.
272 - Header tokens are now deleted after the websocket connection is
273 established. Not just the header data is saved, but the pointer and
274 length array is also removed from (union) scope saving several hundred
275 bytes per connection once it is established
277 - struct libwebsocket_protocols has a new member rx_buffer_size, this
278 controls rx buffer size per connection of that protocol now. Sources
279 for apps built against older versions of the library won't declare
280 this in their protocols, defaulting it to 0. Zero buffer is legal,
281 it causes a default buffer to be allocated (currently 4096)
283 If you want to receive only atomic frames in your user callback, you
284 should set this to greater than your largest frame size. If a frame
285 comes that exceeds that, no error occurs but the callback happens as
286 soon as the buffer limit is reached, and again if it is reached again
287 or the frame completes. You can detect that has happened by seeing
288 there is still frame content pending using
289 libwebsockets_remaining_packet_payload()
291 By correctly setting this, you can save a lot of memory when your
292 protocol has small frames (see the test server and client sources).
294 - LWS_MAX_HEADER_LEN now defaults to 1024 and is the total amount of known
295 header payload lws can cope with, that includes the GET URL, origin
296 etc. Headers not understood by lws are ignored and their payload
297 not included in this.
303 - The configuration-time option MAX_USER_RX_BUFFER has been replaced by a
304 buffer size chosen per-protocol. For compatibility, there's a default
305 of 4096 rx buffer, but user code should set the appropriate size for
308 - LWS_INITIAL_HDR_ALLOC and LWS_ADDITIONAL_HDR_ALLOC are no longer needed
309 and have been removed. There's a new header management scheme that
310 handles them in a much more compact way.
312 - libwebsockets_hangup_on_client() is removed. If you want to close the
313 connection you must do so from the user callback and by returning
316 - libwebsocket_close_and_free_session() is now private to the library code
317 only and not exposed for user code. If you want to close the
318 connection, you must do so from the user callback by returning -1
325 - Cmake project file added, aimed initially at Windows support: this replaces
326 the visual studio project files that were in the tree until now.
328 - CyaSSL now supported in place of OpenSSL (--use-cyassl on configure)
330 - PATH_MAX or MAX_PATH no longer needed
332 - cutomizable frame rx buffer size by protocol
334 - optional TCP keepalive so dead peers can be detected, can be enabled at
335 context-creation time
337 - valgrind-clean: no SSL or CyaSSL: completely clean. With OpenSSL, 88 bytes
338 lost at OpenSSL library init and symptomless reports of uninitialized
339 memory usage... seems to be a known and ignored problem at OpenSSL
341 - By default debug is enabled and the library is built for -O0 -g to faclitate
342 that. Use --disable-debug configure option to build instead with -O4
343 and no -g (debug info), obviously providing best performance and
346 - 1.0 introduced some code to try to not deflate small frames, however this
347 seems to break when confronted with a mixture of frames above and
348 below the threshold, so it's removed. Veto the compression extension
349 in your user callback if you will typically have very small frames.
351 - There are many memory usage improvements, both a reduction in malloc/
352 realloc and architectural changes. A websocket connection now
353 consumes only 296 bytes with SSL or 272 bytes without on x86_64,
354 during header processing an additional 1262 bytes is allocated in a
355 single malloc, but is freed when the websocket connection starts.
356 The RX frame buffer defined by the protocol in user
357 code is also allocated per connection, this represents the largest
358 frame you can receive atomically in that protocol.
360 - On ARM9 build, just http+ws server no extensions or ssl, <12Kbytes .text
361 and 112 bytes per connection (+1328 only during header processing)
364 v1.1-chrome26-firefox18
365 =======================
371 README-test-server | 291 ---
372 README.build | 239 ++
373 README.coding | 138 ++
375 README.test-apps | 272 +++
376 configure.ac | 116 +-
377 lib/Makefile.am | 55 +-
378 lib/base64-decode.c | 5 +-
379 lib/client-handshake.c | 121 +-
380 lib/client-parser.c | 394 ++++
381 lib/client.c | 807 +++++++
382 lib/daemonize.c | 212 ++
383 lib/extension-deflate-frame.c | 132 +-
384 lib/extension-deflate-stream.c | 12 +-
385 lib/extension-x-google-mux.c | 1223 ----------
386 lib/extension-x-google-mux.h | 96 -
387 lib/extension.c | 8 -
388 lib/getifaddrs.c | 271 +++
389 lib/getifaddrs.h | 76 +
390 lib/handshake.c | 582 +----
391 lib/libwebsockets.c | 2493 ++++++---------------
392 lib/libwebsockets.h | 115 +-
394 lib/minilex.c | 440 ++++
395 lib/output.c | 628 ++++++
396 lib/parsers.c | 2016 +++++------------
397 lib/private-libwebsockets.h | 284 +--
398 lib/server-handshake.c | 275 +++
399 lib/server.c | 377 ++++
400 libwebsockets-api-doc.html | 300 +--
402 test-server/Makefile.am | 111 +-
403 test-server/libwebsockets.org-logo.png | Bin 0 -> 7029 bytes
404 test-server/test-client.c | 45 +-
405 test-server/test-echo.c | 330 +++
406 test-server/test-fraggle.c | 20 +-
407 test-server/test-ping.c | 22 +-
408 test-server/test-server-extpoll.c | 554 -----
409 test-server/test-server.c | 349 ++-
410 test-server/test.html | 3 +-
411 win32port/zlib/ZLib.vcxproj | 749 ++++---
412 win32port/zlib/ZLib.vcxproj.filters | 188 +-
413 win32port/zlib/adler32.c | 348 ++-
414 win32port/zlib/compress.c | 160 +-
415 win32port/zlib/crc32.c | 867 ++++----
416 win32port/zlib/crc32.h | 882 ++++----
417 win32port/zlib/deflate.c | 3799 +++++++++++++++-----------------
418 win32port/zlib/deflate.h | 688 +++---
419 win32port/zlib/gzclose.c | 50 +-
420 win32port/zlib/gzguts.h | 325 ++-
421 win32port/zlib/gzlib.c | 1157 +++++-----
422 win32port/zlib/gzread.c | 1242 ++++++-----
423 win32port/zlib/gzwrite.c | 1096 +++++----
424 win32port/zlib/infback.c | 1272 ++++++-----
425 win32port/zlib/inffast.c | 680 +++---
426 win32port/zlib/inffast.h | 22 +-
427 win32port/zlib/inffixed.h | 188 +-
428 win32port/zlib/inflate.c | 2976 +++++++++++++------------
429 win32port/zlib/inflate.h | 244 +-
430 win32port/zlib/inftrees.c | 636 +++---
431 win32port/zlib/inftrees.h | 124 +-
432 win32port/zlib/trees.c | 2468 +++++++++++----------
433 win32port/zlib/trees.h | 256 +--
434 win32port/zlib/uncompr.c | 118 +-
435 win32port/zlib/zconf.h | 934 ++++----
436 win32port/zlib/zlib.h | 3357 ++++++++++++++--------------
437 win32port/zlib/zutil.c | 642 +++---
438 win32port/zlib/zutil.h | 526 ++---
439 69 files changed, 19556 insertions(+), 20145 deletions(-)
444 - libwebsockets_serve_http_file() now takes a context as first argument
446 - libwebsockets_get_peer_addresses() now takes a context and wsi as first
453 - lwsl_...() logging apis, default to stderr but retargetable by user code;
454 may be used also by user code
456 - lws_set_log_level() set which logging apis are able to emit (defaults to
457 notice, warn, err severities), optionally set the emit callback
459 - lwsl_emit_syslog() helper callback emits to syslog
461 - lws_daemonize() helper code that forks the app into a headless daemon
462 properly, maintains a lock file with pid in suitable for sysvinit etc to
465 - LWS_CALLBACK_HTTP_FILE_COMPLETION callback added since http file
466 transfer is now asynchronous (see test server code)
468 - lws_frame_is_binary() from a wsi pointer, let you know if the received
469 data was sent in BINARY mode
475 - libwebsockets_fork_service_loop() - no longer supported (had intractable problems)
476 arrange your code to act from the user callback instead from same
477 process context as the service loop
479 - libwebsockets_broadcast() - use libwebsocket_callback_on_writable[_all_protocol]()
480 instead from same process context as the service loop. See the test apps
483 - x-google-mux() removed until someone wants it
485 - pre -v13 (ancient) protocol support removed
491 - echo test server and client compatible with echo.websocket.org added
493 - many new configure options (see README.build) to reduce footprint of the
494 library to what you actually need, eg, --without-client and
497 - http + websocket server can build to as little as 12K .text for ARM
499 - no more MAX_CLIENTS limitation; adapts to support the max number of fds
500 allowed to the process by ulimit, defaults to 1024 on Fedora and
501 Ubuntu. Use ulimit to control this without needing to configure
502 the library. Code here is smaller and faster.
504 - adaptive ratio of listen socket to connection socket service allows
505 good behaviour under Apache ab test load. Tested with thousands
506 of simultaneous connections
508 - reduction in per-connection memory footprint by moving to a union to hold
509 mutually-exclusive state for the connection
511 - robustness: Out of Memory taken care of for all allocation code now
513 - internal getifaddrs option if your toolchain lacks it (some uclibc)
515 - configurable memory limit for deflate operations
517 - improvements in SSL code nonblocking operation, possible hang solved,
518 some SSL operations broken down into pollable states so there is
519 no library blocking, timeout coverage for SSL_connect
521 - extpoll test server merged into single test server source
523 - robustness: library should deal with all recoverable socket conditions
525 - rx flowcontrol for backpressure notification fixed and implmeneted
526 correctly in the test server
528 - optimal lexical parser added for header processing; all headers in a
529 single 276-byte state table
531 - latency tracking api added (configure --with-latency)
533 - Improved in-tree documentation, REAME.build, README.coding,
534 README.test-apps, changelog
539 v1.0-chrome25-firefox17 (6cd1ea9b005933f)