7 1) lws now exposes his internal platform file abstraction in a way that can be
8 both used by user code to make it platform-agnostic, and be overridden or
9 subclassed by user code. This allows things like handling the URI "directory
10 space" as a virtual filesystem that may or may not be backed by a regular
11 filesystem. One example use is serving files from inside large compressed
12 archive storage without having to unpack anything except the file being
15 The test server shows how to use it, basically the platform-specific part of
16 lws prepares a file operations structure that lives in the lws context.
18 Helpers are provided to also leverage these platform-independent file handling
21 static inline lws_filefd_type
22 lws_plat_file_open(struct lws *wsi, const char *filename,
23 unsigned long *filelen, int flags)
25 lws_plat_file_close(struct lws *wsi, lws_filefd_type fd)
27 static inline unsigned long
28 lws_plat_file_seek_cur(struct lws *wsi, lws_filefd_type fd, long offset)
31 lws_plat_file_read(struct lws *wsi, lws_filefd_type fd, unsigned long *amount,
32 unsigned char *buf, unsigned long len)
35 lws_plat_file_write(struct lws *wsi, lws_filefd_type fd, unsigned long *amount,
36 unsigned char *buf, unsigned long len)
38 The user code can also override or subclass the file operations, to either
39 wrap or replace them. An example is shown in test server.
41 A wsi can be associated with the file activity, allowing per-connection
42 authentication and state to be used when interpreting the file request.
44 2) A new API void * lws_wsi_user(struct lws *wsi) lets you get the pointer to
45 the user data associated with the wsi, just from the wsi.
53 - lws_callback_on_writable_all_protocol(const struct lws_protocols *protocol)
54 - lws_callback_all_protocol(const struct lws_protocols *protocol)
55 - lws_rx_flow_allow_all_protocol(lws_rx_flow_allow_all_protocol)
57 Now take an additional pointer to the lws_context in their first argument.
59 The reason for this change is struct lws_protocols has been changed to remove
60 members that lws used for private storage: so the protocols struct in now
61 truly const and may be reused serially or simultaneously by different contexts.
65 LWS_VISIBLE LWS_EXTERN int
66 lws_add_http_header_by_name(struct lws_context *context,
68 const unsigned char *name,
69 const unsigned char *value,
73 LWS_VISIBLE LWS_EXTERN int
74 lws_finalize_http_header(struct lws_context *context,
78 LWS_VISIBLE LWS_EXTERN int
79 lws_add_http_header_by_token(struct lws_context *context,
81 enum lws_token_indexes token,
82 const unsigned char *value,
86 LWS_VISIBLE LWS_EXTERN int
87 lws_add_http_header_content_length(struct lws_context *context,
89 unsigned long content_length,
92 LWS_VISIBLE LWS_EXTERN int
93 lws_add_http_header_status(struct lws_context *context, struct lws *wsi,
94 unsigned int code, unsigned char **p,
97 LWS_VISIBLE LWS_EXTERN int
98 lws_serve_http_file(struct lws_context *context, struct lws *wsi,
99 const char *file, const char *content_type,
100 const char *other_headers, int other_headers_len);
101 LWS_VISIBLE LWS_EXTERN int
102 lws_serve_http_file_fragment(struct lws_context *context, struct lws *wsi);
104 LWS_VISIBLE LWS_EXTERN int
105 lws_return_http_status(struct lws_context *context, struct lws *wsi,
106 unsigned int code, const char *html_body);
108 LWS_VISIBLE LWS_EXTERN int
109 lws_callback_on_writable(const struct lws_context *context, struct lws *wsi);
111 LWS_VISIBLE LWS_EXTERN void
112 lws_get_peer_addresses(struct lws_context *context, struct lws *wsi,
113 lws_sockfd_type fd, char *name, int name_len,
114 char *rip, int rip_len);
116 LWS_VISIBLE LWS_EXTERN int
117 lws_read(struct lws_context *context, struct lws *wsi,
118 unsigned char *buf, size_t len);
120 no longer require their initial struct lws_context * parameter.
122 3) Several older apis start with libwebsocket_ or libwebsockets_ while newer ones
123 all begin lws_. These apis have been changed to all begin with lws_.
125 To convert, search-replace
127 - libwebsockets_/lws_
129 - struct\ libwebsocket/struct\ lws
131 4) context parameter removed from user callback.
133 Since almost all apis no longer need the context as a parameter, it's no longer
134 provided at the user callback directly.
136 However if you need it, for ALL callbacks wsi is valid and has a valid context
137 pointer you can recover using lws_get_context(wsi).
140 v1.5-chrome47-firefox41
141 =======================
146 LWS_CALLBACK_CLIENT_CONNECTION_ERROR may provide an error string if in is
147 non-NULL. If so, the string has length len.
149 LWS_SERVER_OPTION_PEER_CERT_NOT_REQUIRED is available to relax the requirement
150 for peer certs if you are using the option to require client certs.
152 LWS_WITHOUT_BUILTIN_SHA1 cmake option forces lws to use SHA1() defined
153 externally, eg, byOpenSSL, and disables build of libwebsockets_SHA1()
156 v1.4-chrome43-firefox36
157 =======================
162 There's a new member in the info struct used to control context creation,
163 ssl_private_key_password, which allows passing into lws the passphrase on
166 There's a new member in struct protocols, id, which is ignored by lws but can
167 be used by the user code to mark the selected protocol by user-defined version
168 or capabliity flag information, for the case multiple versions of a protocol are
171 int lws_is_ssl(wsi) added to allow user code to know if the connection was made
172 over ssl or not. If LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT is used, both
173 ssl and non-ssl connections are possible and may need to be treated differently
176 int lws_partial_buffered(wsi) added... should be checked after any
177 libwebsocket_write that will be followed by another libwebsocket_write inside
178 the same writeable callback. If set, you can't do any more writes until the
179 writeable callback is called again. If you only do one write per writeable callback,
182 HTTP2-related: HTTP2 changes how headers are handled, lws now has new version-
183 agnositic header creation APIs. These do the right thing depending on each
184 connection's HTTP version without the user code having to know or care, except
185 to make sure to use the new APIs for headers (test-server is updated to use
186 them already, so look there for examples)
188 The APIs "render" the headers into a user-provided buffer and bump *p as it
189 is used. If *p reaches end, then the APIs return nonzero for error.
191 LWS_VISIBLE LWS_EXTERN int
192 lws_add_http_header_status(struct libwebsocket_context *context,
193 struct libwebsocket *wsi,
198 Start a response header reporting status like 200, 500, etc
200 LWS_VISIBLE LWS_EXTERN int
201 lws_add_http_header_by_name(struct libwebsocket_context *context,
202 struct libwebsocket *wsi,
203 const unsigned char *name,
204 const unsigned char *value,
209 Add a header like name: value in HTTP1.x
211 LWS_VISIBLE LWS_EXTERN int
212 lws_finalize_http_header(struct libwebsocket_context *context,
213 struct libwebsocket *wsi,
217 Finish off the headers, like add the extra \r\n in HTTP1.x
219 LWS_VISIBLE LWS_EXTERN int
220 lws_add_http_header_by_token(struct libwebsocket_context *context,
221 struct libwebsocket *wsi,
222 enum lws_token_indexes token,
223 const unsigned char *value,
228 Add a header by using a lws token as the name part. In HTTP2, this can be
229 compressed to one or two bytes.
235 protocols struct member no_buffer_all_partial_tx is removed. Under some
236 conditions like rewriting extension such as compression in use, the built-in
237 partial send buffering is the only way to deal with the problem, so turning
238 it off is deprecated.
244 HTTP2-related: API libwebsockets_serve_http_file() takes an extra parameter at
247 int other_headers_len)
249 If you are providing other headers, they must be generated using the new
250 HTTP-version-agnostic APIs, and you must provide the length of them using this
251 additional parameter.
253 struct lws_context_creation_info now has an additional member
254 SSL_CTX *provided_client_ssl_ctx you may set to an externally-initialized
255 SSL_CTX managed outside lws. Defaulting to zero keeps the existing behaviour of
256 lws managing the context, if you memset the struct to 0 or have as a filescope
257 initialized struct in bss, no need to change anything.
260 v1.3-chrome37-firefox30
261 =======================
264 CMakeLists.txt | 447 +++--
268 cmake/LibwebsocketsConfig.cmake.in | 17 +
269 cmake/LibwebsocketsConfigVersion.cmake.in | 11 +
270 config.h.cmake | 18 +
271 cross-ming.cmake | 31 +
272 cross-openwrt-makefile | 91 +
273 lib/client-handshake.c | 205 ++-
274 lib/client-parser.c | 58 +-
275 lib/client.c | 158 +-
276 lib/context.c | 341 ++++
277 lib/extension-deflate-frame.c | 2 +-
278 lib/extension.c | 178 ++
279 lib/handshake.c | 287 +---
280 lib/lextable.h | 338 ++++
282 lib/libwebsockets.c | 2089 +++--------------------
283 lib/libwebsockets.h | 253 ++-
284 lib/lws-plat-unix.c | 404 +++++
285 lib/lws-plat-win.c | 358 ++++
286 lib/minilex.c | 530 +++---
287 lib/output.c | 445 ++---
288 lib/parsers.c | 682 ++++----
289 lib/pollfd.c | 239 +++
290 lib/private-libwebsockets.h | 501 +++++-
291 lib/server-handshake.c | 274 +--
292 lib/server.c | 858 ++++++++--
293 lib/service.c | 517 ++++++
295 lib/ssl-http2.c | 78 +
296 lib/ssl.c | 571 +++++++
297 test-server/attack.sh | 101 +-
298 test-server/test-client.c | 9 +-
299 test-server/test-echo.c | 17 +-
300 test-server/test-fraggle.c | 7 -
301 test-server/test-ping.c | 12 +-
302 test-server/test-server.c | 330 ++--
303 test-server/test.html | 4 +-
304 win32port/client/client.vcxproj | 259 ---
305 win32port/client/client.vcxproj.filters | 39 -
306 .../libwebsocketswin32.vcxproj.filters | 93 -
307 win32port/server/server.vcxproj | 276 ---
308 win32port/server/server.vcxproj.filters | 51 -
309 win32port/win32helpers/gettimeofday.h | 59 +-
310 win32port/win32helpers/netdb.h | 1 -
311 win32port/win32helpers/strings.h | 0
312 win32port/win32helpers/sys/time.h | 1 -
313 win32port/win32helpers/unistd.h | 0
314 win32port/win32helpers/websock-w32.c | 104 --
315 win32port/win32helpers/websock-w32.h | 62 -
316 win32port/win32port.sln | 100 --
317 win32port/zlib/gzio.c | 3 +-
318 55 files changed, 6779 insertions(+), 5059 deletions(-)
324 POST method is supported
326 The protocol 0 / HTTP callback can now get two new kinds of callback,
327 LWS_CALLBACK_HTTP_BODY (in and len are a chunk of the body of the HTTP request)
328 and LWS_CALLBACK_HTTP_BODY_COMPLETION (the expected amount of body has arrived
329 and been passed to the user code already). These callbacks are used with the
330 post method (see the test server for details).
332 The period between the HTTP header completion and the completion of the body
333 processing is protected by a 5s timeout.
335 The chunks are stored in a malloc'd buffer of size protocols[0].rx_buffer_size.
338 New server option you can enable from user code
339 LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT allows non-SSL connections to
340 also be accepted on an SSL listening port. It's disabled unless you enable
344 Two new callbacks are added in protocols[0] that are optional for allowing
345 limited thread access to libwebsockets, LWS_CALLBACK_LOCK_POLL and
346 LWS_CALLBACK_UNLOCK_POLL.
348 If you use them, they protect internal and external poll list changes, but if
349 you want to use external thread access to libwebsocket_callback_on_writable()
350 you have to implement your locking here even if you don't use external
353 If you will use another thread for this, take a lot of care about managing
354 your list of live wsi by doing it from ESTABLISHED and CLOSED callbacks
355 (with your own locking).
357 If you configure cmake with -DLWS_WITH_LIBEV=1 then the code allowing the libev
358 eventloop instead of the default poll() one will also be compiled in. But to
359 use it, you must also set the LWS_SERVER_OPTION_LIBEV flag on the context
360 creation info struct options member.
362 IPV6 is supported and enabled by default except for Windows, you can disable
363 the support at build-time by giving -DLWS_IPV6=, and disable use of it even if
364 compiled in by making sure the flag LWS_SERVER_OPTION_DISABLE_IPV6 is set on
365 the context creation info struct options member.
367 You can give LWS_SERVER_OPTION_DISABLE_OS_CA_CERTS option flag to
368 guarantee the OS CAs will not be used, even if that support was selected at
371 Optional "token limits" may be enforced by setting the member "token_limits"
372 in struct lws_context_creation_info to point to a struct lws_token_limits.
373 NULL means no token limits used for compatibility.
379 Extra optional argument to libwebsockets_serve_http_file() allows injecion
380 of HTTP headers into the canned response. Eg, cookies may be added like
381 that without getting involved in having to send the header by hand.
383 A new info member http_proxy_address may be used at context creation time to
384 set the http proxy. If non-NULL, it overrides http_proxy environment var.
386 Cmake supports LWS_SSL_CLIENT_USE_OS_CA_CERTS defaulting to on, which gets
387 the client to use the OS CA Roots. If you're worried somebody with the
388 ability to forge for force creation of a client cert from the root CA in
389 your OS, you should disable this since your selfsigned $0 cert is a lot safer
393 v1.23-chrome32-firefox24
394 ========================
397 CMakeLists.txt | 573 ++++++++----
398 COPYING | 503 -----------
399 INSTALL | 365 --------
401 README.build | 371 ++------
402 README.coding | 63 ++
403 autogen.sh | 1578 ---------------------------------
405 cmake/FindGit.cmake | 163 ++++
406 cmake/FindOpenSSLbins.cmake | 15 +-
407 cmake/UseRPMTools.cmake | 176 ++++
408 config.h.cmake | 25 +-
409 configure.ac | 226 -----
410 cross-arm-linux-gnueabihf.cmake | 28 +
411 lib/Makefile.am | 89 --
412 lib/base64-decode.c | 98 +-
413 lib/client-handshake.c | 123 ++-
414 lib/client-parser.c | 19 +-
415 lib/client.c | 145 ++-
416 lib/daemonize.c | 4 +-
417 lib/extension.c | 2 +-
418 lib/getifaddrs.h | 4 +-
419 lib/handshake.c | 76 +-
420 lib/libwebsockets.c | 491 ++++++----
421 lib/libwebsockets.h | 164 ++--
422 lib/output.c | 214 ++++-
423 lib/parsers.c | 102 +--
424 lib/private-libwebsockets.h | 66 +-
425 lib/server-handshake.c | 5 +-
428 libwebsockets-api-doc.html | 249 +++---
429 libwebsockets.pc.in | 11 -
430 libwebsockets.spec | 14 +-
432 scripts/FindLibWebSockets.cmake | 33 +
433 scripts/kernel-doc | 1 +
434 test-server/Makefile.am | 131 ---
435 test-server/leaf.jpg | Bin 0 -> 2477518 bytes
436 test-server/test-client.c | 78 +-
437 test-server/test-echo.c | 33 +-
438 test-server/test-fraggle.c | 26 +-
439 test-server/test-ping.c | 15 +-
440 test-server/test-server.c | 197 +++-
441 test-server/test.html | 5 +-
442 win32port/win32helpers/gettimeofday.c | 74 +-
443 win32port/win32helpers/websock-w32.h | 6 +-
444 48 files changed, 2493 insertions(+), 4212 deletions(-)
450 - You can now call libwebsocket_callback_on_writable() on http connectons,
451 and get a LWS_CALLBACK_HTTP_WRITEABLE callback, the same way you can
452 regulate writes with a websocket protocol connection.
454 - A new member in the context creation parameter struct "ssl_cipher_list" is
455 added, replacing CIPHERS_LIST_STRING. NULL means use the ssl library
456 default list of ciphers.
458 - Not really an api addition, but libwebsocket_service_fd() will now zero
459 the revents field of the pollfd it was called with if it handled the
460 descriptor. So you can tell if it is a non-lws fd by checking revents
461 after the service call... if it's still nonzero, the descriptor
462 belongs to you and you need to take care of it.
464 - libwebsocket_rx_flow_allow_all_protocol(protocol) will unthrottle all
465 connections with the established protocol. It's designed to be
466 called from user server code when it sees it can accept more input
467 and may have throttled connections using the server rx flow apis
468 while it was unable to accept any other input The user server code
469 then does not have to try to track while connections it choked, this
470 will free up all of them in one call.
472 - there's a new, optional callback LWS_CALLBACK_CLOSED_HTTP which gets
473 called when an HTTP protocol socket closes
475 - for LWS_CALLBACK_FILTER_PROTOCOL_CONNECTION callback, the user_space alloc
476 has already been done before the callback happens. That means we can
477 use the user parameter to the callback to contain the user pointer, and
478 move the protocol name to the "in" parameter. The docs for this
479 callback are also updated to reflect how to check headers in there.
481 - libwebsocket_client_connect() is now properly nonblocking and async. See
482 README.coding and test-client.c for information on the callbacks you
483 can rely on controlling the async connection period with.
485 - if your OS does not support the http_proxy environment variable convention
486 (eg, reportedly OSX), you can use a new api libwebsocket_set_proxy()
487 to set the proxy details in between context creation and the connection
488 action. For OSes that support http_proxy, that's used automatically.
493 - the external poll callbacks now get the socket descriptor coming from the
494 "in" parameter. The user parameter provides the user_space for the
495 wsi as it normally does on the other callbacks.
496 LWS_CALLBACK_FILTER_NETWORK_CONNECTION also has the socket descriptor
497 delivered by @in now instead of @user.
499 - libwebsocket_write() now returns -1 for error, or the amount of data
500 actually accepted for send. Under load, the OS may signal it is
501 ready to send new data on the socket, but have only a restricted
502 amount of memory to buffer the packet compared to usual.
508 - libwebsocket_ensure_user_space() is removed from the public api, if you
509 were using it to get user_space, you need to adapt your code to only
510 use user_space inside the user callback.
512 - CIPHERS_LIST_STRING is removed
514 - autotools build has been removed. See README.build for info on how to
515 use CMake for your platform
518 v1.21-chrome26-firefox18
519 ========================
521 - Fixes buffer overflow bug in max frame size handling if you used the
522 default protocol buffer size. If you declared rx_buffer_size in your
523 protocol, which is recommended anyway, your code was unaffected.
525 v1.2-chrome26-firefox18
526 =======================
532 CMakeLists.txt | 544 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
533 LICENSE | 526 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
536 README.build | 258 ++++++++++++++++++++++++++++++++-----
537 README.coding | 52 ++++++++
538 changelog | 136 ++++++++++++++++++++
539 cmake/FindOpenSSLbins.cmake | 33 +++++
540 config.h.cmake | 173 +++++++++++++++++++++++++
541 configure.ac | 22 +++-
542 lib/Makefile.am | 20 ++-
543 lib/base64-decode.c | 2 +-
544 lib/client-handshake.c | 190 +++++++++++-----------------
545 lib/client-parser.c | 88 +++++++------
546 lib/client.c | 384 ++++++++++++++++++++++++++++++-------------------------
547 lib/daemonize.c | 32 +++--
548 lib/extension-deflate-frame.c | 58 +++++----
549 lib/extension-deflate-stream.c | 19 ++-
550 lib/extension-deflate-stream.h | 4 +-
551 lib/extension.c | 11 +-
552 lib/getifaddrs.c | 315 +++++++++++++++++++++++-----------------------
553 lib/getifaddrs.h | 30 ++---
554 lib/handshake.c | 124 +++++++++++-------
555 lib/libwebsockets.c | 736 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--------------------------------------
556 lib/libwebsockets.h | 237 ++++++++++++++++++++++------------
557 lib/output.c | 192 +++++++++++-----------------
558 lib/parsers.c | 966 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------------------------------------------
559 lib/private-libwebsockets.h | 225 +++++++++++++++++++++------------
560 lib/server-handshake.c | 82 ++++++------
561 lib/server.c | 96 +++++++-------
562 libwebsockets-api-doc.html | 189 ++++++++++++++++++----------
563 libwebsockets.spec | 17 +--
564 test-server/attack.sh | 148 ++++++++++++++++++++++
565 test-server/test-client.c | 125 +++++++++---------
566 test-server/test-echo.c | 31 +++--
567 test-server/test-fraggle.c | 32 ++---
568 test-server/test-ping.c | 52 ++++----
569 test-server/test-server.c | 129 ++++++++++++-------
570 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj | 279 ----------------------------------------
571 win32port/libwebsocketswin32/libwebsocketswin32.vcxproj.filters | 23 +++-
572 41 files changed, 4398 insertions(+), 2219 deletions(-)
578 - lws_get_library_version() returns a const char * with a string like
579 "1.1 9e7f737", representing the library version from configure.ac
580 and the git HEAD hash the library was built from
582 - TCP Keepalive can now optionally be applied to all lws sockets, on Linux
583 also with controllable timeout, number of probes and probe interval.
584 (On BSD type OS, you can only use system default settings for the
585 timing and retries, although enabling it is supported by setting
586 ka_time to nonzero, the exact value has no meaning.)
587 This enables detection of idle connections which are logically okay,
588 but are in fact dead, due to network connectivity issues at the server,
589 client, or any intermediary. By default it's not enabled, but you
590 can enable it by setting a non-zero timeout (in seconds) at the new
591 ka_time member at context creation time.
593 - Two new optional user callbacks added, LWS_CALLBACK_PROTOCOL_DESTROY which
594 is called one-time per protocol as the context is being destroyed, and
595 LWS_CALLBACK_PROTOCOL_INIT which is called when the context is created
596 and the protocols are added, again it's a one-time affair.
597 This lets you manage per-protocol allocations properly including
598 cleaning up after yourself when the server goes down.
603 - libwebsocket_create_context() has changed from taking a ton of parameters
604 to just taking a pointer to a struct containing the parameters. The
605 struct lws_context_creation_info is in libwebsockets.h, the members
606 are in the same order as when they were parameters to the call
607 previously. The test apps are all updated accordingly so you can
608 see example code there.
610 - Header tokens are now deleted after the websocket connection is
611 established. Not just the header data is saved, but the pointer and
612 length array is also removed from (union) scope saving several hundred
613 bytes per connection once it is established
615 - struct libwebsocket_protocols has a new member rx_buffer_size, this
616 controls rx buffer size per connection of that protocol now. Sources
617 for apps built against older versions of the library won't declare
618 this in their protocols, defaulting it to 0. Zero buffer is legal,
619 it causes a default buffer to be allocated (currently 4096)
621 If you want to receive only atomic frames in your user callback, you
622 should set this to greater than your largest frame size. If a frame
623 comes that exceeds that, no error occurs but the callback happens as
624 soon as the buffer limit is reached, and again if it is reached again
625 or the frame completes. You can detect that has happened by seeing
626 there is still frame content pending using
627 libwebsockets_remaining_packet_payload()
629 By correctly setting this, you can save a lot of memory when your
630 protocol has small frames (see the test server and client sources).
632 - LWS_MAX_HEADER_LEN now defaults to 1024 and is the total amount of known
633 header payload lws can cope with, that includes the GET URL, origin
634 etc. Headers not understood by lws are ignored and their payload
635 not included in this.
641 - The configuration-time option MAX_USER_RX_BUFFER has been replaced by a
642 buffer size chosen per-protocol. For compatibility, there's a default
643 of 4096 rx buffer, but user code should set the appropriate size for
646 - LWS_INITIAL_HDR_ALLOC and LWS_ADDITIONAL_HDR_ALLOC are no longer needed
647 and have been removed. There's a new header management scheme that
648 handles them in a much more compact way.
650 - libwebsockets_hangup_on_client() is removed. If you want to close the
651 connection you must do so from the user callback and by returning
654 - libwebsocket_close_and_free_session() is now private to the library code
655 only and not exposed for user code. If you want to close the
656 connection, you must do so from the user callback by returning -1
663 - Cmake project file added, aimed initially at Windows support: this replaces
664 the visual studio project files that were in the tree until now.
666 - CyaSSL now supported in place of OpenSSL (--use-cyassl on configure)
668 - PATH_MAX or MAX_PATH no longer needed
670 - cutomizable frame rx buffer size by protocol
672 - optional TCP keepalive so dead peers can be detected, can be enabled at
673 context-creation time
675 - valgrind-clean: no SSL or CyaSSL: completely clean. With OpenSSL, 88 bytes
676 lost at OpenSSL library init and symptomless reports of uninitialized
677 memory usage... seems to be a known and ignored problem at OpenSSL
679 - By default debug is enabled and the library is built for -O0 -g to faclitate
680 that. Use --disable-debug configure option to build instead with -O4
681 and no -g (debug info), obviously providing best performance and
684 - 1.0 introduced some code to try to not deflate small frames, however this
685 seems to break when confronted with a mixture of frames above and
686 below the threshold, so it's removed. Veto the compression extension
687 in your user callback if you will typically have very small frames.
689 - There are many memory usage improvements, both a reduction in malloc/
690 realloc and architectural changes. A websocket connection now
691 consumes only 296 bytes with SSL or 272 bytes without on x86_64,
692 during header processing an additional 1262 bytes is allocated in a
693 single malloc, but is freed when the websocket connection starts.
694 The RX frame buffer defined by the protocol in user
695 code is also allocated per connection, this represents the largest
696 frame you can receive atomically in that protocol.
698 - On ARM9 build, just http+ws server no extensions or ssl, <12Kbytes .text
699 and 112 bytes per connection (+1328 only during header processing)
702 v1.1-chrome26-firefox18
703 =======================
709 README-test-server | 291 ---
710 README.build | 239 ++
711 README.coding | 138 ++
713 README.test-apps | 272 +++
714 configure.ac | 116 +-
715 lib/Makefile.am | 55 +-
716 lib/base64-decode.c | 5 +-
717 lib/client-handshake.c | 121 +-
718 lib/client-parser.c | 394 ++++
719 lib/client.c | 807 +++++++
720 lib/daemonize.c | 212 ++
721 lib/extension-deflate-frame.c | 132 +-
722 lib/extension-deflate-stream.c | 12 +-
723 lib/extension-x-google-mux.c | 1223 ----------
724 lib/extension-x-google-mux.h | 96 -
725 lib/extension.c | 8 -
726 lib/getifaddrs.c | 271 +++
727 lib/getifaddrs.h | 76 +
728 lib/handshake.c | 582 +----
729 lib/libwebsockets.c | 2493 ++++++---------------
730 lib/libwebsockets.h | 115 +-
732 lib/minilex.c | 440 ++++
733 lib/output.c | 628 ++++++
734 lib/parsers.c | 2016 +++++------------
735 lib/private-libwebsockets.h | 284 +--
736 lib/server-handshake.c | 275 +++
737 lib/server.c | 377 ++++
738 libwebsockets-api-doc.html | 300 +--
740 test-server/Makefile.am | 111 +-
741 test-server/libwebsockets.org-logo.png | Bin 0 -> 7029 bytes
742 test-server/test-client.c | 45 +-
743 test-server/test-echo.c | 330 +++
744 test-server/test-fraggle.c | 20 +-
745 test-server/test-ping.c | 22 +-
746 test-server/test-server-extpoll.c | 554 -----
747 test-server/test-server.c | 349 ++-
748 test-server/test.html | 3 +-
749 win32port/zlib/ZLib.vcxproj | 749 ++++---
750 win32port/zlib/ZLib.vcxproj.filters | 188 +-
751 win32port/zlib/adler32.c | 348 ++-
752 win32port/zlib/compress.c | 160 +-
753 win32port/zlib/crc32.c | 867 ++++----
754 win32port/zlib/crc32.h | 882 ++++----
755 win32port/zlib/deflate.c | 3799 +++++++++++++++-----------------
756 win32port/zlib/deflate.h | 688 +++---
757 win32port/zlib/gzclose.c | 50 +-
758 win32port/zlib/gzguts.h | 325 ++-
759 win32port/zlib/gzlib.c | 1157 +++++-----
760 win32port/zlib/gzread.c | 1242 ++++++-----
761 win32port/zlib/gzwrite.c | 1096 +++++----
762 win32port/zlib/infback.c | 1272 ++++++-----
763 win32port/zlib/inffast.c | 680 +++---
764 win32port/zlib/inffast.h | 22 +-
765 win32port/zlib/inffixed.h | 188 +-
766 win32port/zlib/inflate.c | 2976 +++++++++++++------------
767 win32port/zlib/inflate.h | 244 +-
768 win32port/zlib/inftrees.c | 636 +++---
769 win32port/zlib/inftrees.h | 124 +-
770 win32port/zlib/trees.c | 2468 +++++++++++----------
771 win32port/zlib/trees.h | 256 +--
772 win32port/zlib/uncompr.c | 118 +-
773 win32port/zlib/zconf.h | 934 ++++----
774 win32port/zlib/zlib.h | 3357 ++++++++++++++--------------
775 win32port/zlib/zutil.c | 642 +++---
776 win32port/zlib/zutil.h | 526 ++---
777 69 files changed, 19556 insertions(+), 20145 deletions(-)
782 - libwebsockets_serve_http_file() now takes a context as first argument
784 - libwebsockets_get_peer_addresses() now takes a context and wsi as first
791 - lwsl_...() logging apis, default to stderr but retargetable by user code;
792 may be used also by user code
794 - lws_set_log_level() set which logging apis are able to emit (defaults to
795 notice, warn, err severities), optionally set the emit callback
797 - lwsl_emit_syslog() helper callback emits to syslog
799 - lws_daemonize() helper code that forks the app into a headless daemon
800 properly, maintains a lock file with pid in suitable for sysvinit etc to
803 - LWS_CALLBACK_HTTP_FILE_COMPLETION callback added since http file
804 transfer is now asynchronous (see test server code)
806 - lws_frame_is_binary() from a wsi pointer, let you know if the received
807 data was sent in BINARY mode
813 - libwebsockets_fork_service_loop() - no longer supported (had intractable problems)
814 arrange your code to act from the user callback instead from same
815 process context as the service loop
817 - libwebsockets_broadcast() - use libwebsocket_callback_on_writable[_all_protocol]()
818 instead from same process context as the service loop. See the test apps
821 - x-google-mux() removed until someone wants it
823 - pre -v13 (ancient) protocol support removed
829 - echo test server and client compatible with echo.websocket.org added
831 - many new configure options (see README.build) to reduce footprint of the
832 library to what you actually need, eg, --without-client and
835 - http + websocket server can build to as little as 12K .text for ARM
837 - no more MAX_CLIENTS limitation; adapts to support the max number of fds
838 allowed to the process by ulimit, defaults to 1024 on Fedora and
839 Ubuntu. Use ulimit to control this without needing to configure
840 the library. Code here is smaller and faster.
842 - adaptive ratio of listen socket to connection socket service allows
843 good behaviour under Apache ab test load. Tested with thousands
844 of simultaneous connections
846 - reduction in per-connection memory footprint by moving to a union to hold
847 mutually-exclusive state for the connection
849 - robustness: Out of Memory taken care of for all allocation code now
851 - internal getifaddrs option if your toolchain lacks it (some uclibc)
853 - configurable memory limit for deflate operations
855 - improvements in SSL code nonblocking operation, possible hang solved,
856 some SSL operations broken down into pollable states so there is
857 no library blocking, timeout coverage for SSL_connect
859 - extpoll test server merged into single test server source
861 - robustness: library should deal with all recoverable socket conditions
863 - rx flowcontrol for backpressure notification fixed and implmeneted
864 correctly in the test server
866 - optimal lexical parser added for header processing; all headers in a
867 single 276-byte state table
869 - latency tracking api added (configure --with-latency)
871 - Improved in-tree documentation, REAME.build, README.coding,
872 README.test-apps, changelog
877 v1.0-chrome25-firefox17 (6cd1ea9b005933f)