4 (development since 1.1....)
9 - lws_get_library_version() returns a const char * with a string like
10 "1.1 9e7f737", representing the library version from configure.ac
11 and the git HEAD hash the library was built from
13 - TCP Keepalive can now optionally be applied to all lws sockets, on Linux
14 also with controllable timeout, number of probes and probe interval.
15 (On BSD type OS, you can only use system default settings for the
16 timing and retries, although enabling it is supported by setting
17 ka_time to nonzero, the exact value has no meaning.)
18 This enables detection of idle connections which are logically okay,
19 but are in fact dead, due to network connectivity issues at the server,
20 client, or any intermediary. By default it's not enabled, but you
21 can enable it by setting a non-zero timeout (in seconds) at the new
22 ka_time member at context creation time.
24 - Two new optional user callbacks added, LWS_CALLBACK_PROTOCOL_DESTROY which
25 is called one-time per protocol as the context is being destroyed, and
26 LWS_CALLBACK_PROTOCOL_INIT which is called when the context is created
27 and the protocols are added, again it's a one-time affair.
28 This lets you manage per-protocol allocations properly including
29 cleaning up after yourself when the server goes down.
34 - libwebsocket_create_context() has changed from taking a ton of parameters
35 to just taking a pointer to a struct containing the parameters. The
36 struct lws_context_creation_info is in libwebsockets.h, the members
37 are in the same order as when they were parameters to the call
38 previously. The test apps are all updated accordingly so you can
39 see example code there.
41 - Header tokens are now deleted after the websocket connection is
42 established. Not just the header data is saved, but the pointer and
43 length array is also removed from (union) scope saving several hundred
44 bytes per connection once it is established
46 - struct libwebsocket_protocols has a new member rx_buffer_size, this
47 controls rx buffer size per connection of that protocol now. Sources
48 for apps built against older versions of the library won't declare
49 this in their protocols, defaulting it to 0. Zero buffer is legal,
50 it causes a default buffer to be allocated (currently 4096)
52 If you want to receive only atomic frames in your user callback, you
53 should set this to greater than your largest frame size. If a frame
54 comes that exceeds that, no error occurs but the callback happens as
55 soon as the buffer limit is reached, and again if it is reached again
56 or the frame completes. You can detect that has happened by seeing
57 there is still frame content pending using
58 libwebsockets_remaining_packet_payload()
60 By correctly setting this, you can save a lot of memory when your
61 protocol has small frames (see the test server and client sources).
63 - LWS_MAX_HEADER_LEN now defaults to 1024 and is the total amount of known
64 header payload lws can cope with, that includes the GET URL, origin
65 etc. Headers not understood by lws are ignored and their payload
72 - The configuration-time option MAX_USER_RX_BUFFER has been replaced by a
73 buffer size chosen per-protocol. For compatibility, there's a default
74 of 4096 rx buffer, but user code should set the appropriate size for
77 - LWS_INITIAL_HDR_ALLOC and LWS_ADDITIONAL_HDR_ALLOC are no longer needed
78 and have been removed. There's a new header management scheme that
79 handles them in a much more compact way.
85 - Cmake project file added, aimed initially at Windows support: this replaces
86 the visual studio project files that were in the tree until now.
88 - PATH_MAX or MAX_PATH no longer needed
90 - cutomizable frame rx buffer size by protocol
92 - By default debug is enabled and the library is built for -O0 -g to faclitate
93 that. Use --disable-debug configure option to build instead with -O4
94 and no -g (debug info), obviously providing best performance and
97 - 1.0 introduced some code to try to not deflate small frames, however this
98 seems to break when confronted with a mixture of frames above and
99 below the threshold, so it's removed. Veto the compression extension
100 in your user callback if you will typically have very small frames.
102 - There are many memory usage improvements, both a reduction in malloc/
103 realloc and architectural changes. A websocket connection now
104 consumes only 296 bytes with SSL or 272 bytes without on x86_64,
105 during header processing an additional 1262 bytes is allocated in a
106 single malloc, but is freed when the websocket connection starts.
107 The RX frame buffer defined by the protocol in user
108 code is also allocated per connection, this represents the largest
109 frame you can receive atomically in that protocol.
112 v1.1-chrome26-firefox18
113 =======================
119 README-test-server | 291 ---
120 README.build | 239 ++
121 README.coding | 138 ++
123 README.test-apps | 272 +++
124 configure.ac | 116 +-
125 lib/Makefile.am | 55 +-
126 lib/base64-decode.c | 5 +-
127 lib/client-handshake.c | 121 +-
128 lib/client-parser.c | 394 ++++
129 lib/client.c | 807 +++++++
130 lib/daemonize.c | 212 ++
131 lib/extension-deflate-frame.c | 132 +-
132 lib/extension-deflate-stream.c | 12 +-
133 lib/extension-x-google-mux.c | 1223 ----------
134 lib/extension-x-google-mux.h | 96 -
135 lib/extension.c | 8 -
136 lib/getifaddrs.c | 271 +++
137 lib/getifaddrs.h | 76 +
138 lib/handshake.c | 582 +----
139 lib/libwebsockets.c | 2493 ++++++---------------
140 lib/libwebsockets.h | 115 +-
142 lib/minilex.c | 440 ++++
143 lib/output.c | 628 ++++++
144 lib/parsers.c | 2016 +++++------------
145 lib/private-libwebsockets.h | 284 +--
146 lib/server-handshake.c | 275 +++
147 lib/server.c | 377 ++++
148 libwebsockets-api-doc.html | 300 +--
150 test-server/Makefile.am | 111 +-
151 test-server/libwebsockets.org-logo.png | Bin 0 -> 7029 bytes
152 test-server/test-client.c | 45 +-
153 test-server/test-echo.c | 330 +++
154 test-server/test-fraggle.c | 20 +-
155 test-server/test-ping.c | 22 +-
156 test-server/test-server-extpoll.c | 554 -----
157 test-server/test-server.c | 349 ++-
158 test-server/test.html | 3 +-
159 win32port/zlib/ZLib.vcxproj | 749 ++++---
160 win32port/zlib/ZLib.vcxproj.filters | 188 +-
161 win32port/zlib/adler32.c | 348 ++-
162 win32port/zlib/compress.c | 160 +-
163 win32port/zlib/crc32.c | 867 ++++----
164 win32port/zlib/crc32.h | 882 ++++----
165 win32port/zlib/deflate.c | 3799 +++++++++++++++-----------------
166 win32port/zlib/deflate.h | 688 +++---
167 win32port/zlib/gzclose.c | 50 +-
168 win32port/zlib/gzguts.h | 325 ++-
169 win32port/zlib/gzlib.c | 1157 +++++-----
170 win32port/zlib/gzread.c | 1242 ++++++-----
171 win32port/zlib/gzwrite.c | 1096 +++++----
172 win32port/zlib/infback.c | 1272 ++++++-----
173 win32port/zlib/inffast.c | 680 +++---
174 win32port/zlib/inffast.h | 22 +-
175 win32port/zlib/inffixed.h | 188 +-
176 win32port/zlib/inflate.c | 2976 +++++++++++++------------
177 win32port/zlib/inflate.h | 244 +-
178 win32port/zlib/inftrees.c | 636 +++---
179 win32port/zlib/inftrees.h | 124 +-
180 win32port/zlib/trees.c | 2468 +++++++++++----------
181 win32port/zlib/trees.h | 256 +--
182 win32port/zlib/uncompr.c | 118 +-
183 win32port/zlib/zconf.h | 934 ++++----
184 win32port/zlib/zlib.h | 3357 ++++++++++++++--------------
185 win32port/zlib/zutil.c | 642 +++---
186 win32port/zlib/zutil.h | 526 ++---
187 69 files changed, 19556 insertions(+), 20145 deletions(-)
192 - libwebsockets_serve_http_file() now takes a context as first argument
194 - libwebsockets_get_peer_addresses() now takes a context and wsi as first
201 - lwsl_...() logging apis, default to stderr but retargetable by user code;
202 may be used also by user code
204 - lws_set_log_level() set which logging apis are able to emit (defaults to
205 notice, warn, err severities), optionally set the emit callback
207 - lwsl_emit_syslog() helper callback emits to syslog
209 - lws_daemonize() helper code that forks the app into a headless daemon
210 properly, maintains a lock file with pid in suitable for sysvinit etc to
213 - LWS_CALLBACK_HTTP_FILE_COMPLETION callback added since http file
214 transfer is now asynchronous (see test server code)
216 - lws_frame_is_binary() from a wsi pointer, let you know if the received
217 data was sent in BINARY mode
223 - libwebsockets_fork_service_loop() - no longer supported (had intractable problems)
224 arrange your code to act from the user callback instead from same
225 process context as the service loop
227 - libwebsockets_broadcast() - use libwebsocket_callback_on_writable[_all_protocol]()
228 instead from same process context as the service loop. See the test apps
231 - x-google-mux() removed until someone wants it
233 - pre -v13 (ancient) protocol support removed
239 - echo test server and client compatible with echo.websocket.org added
241 - many new configure options (see README.build) to reduce footprint of the
242 library to what you actually need, eg, --without-client and
245 - http + websocket server can build to as little as 12K .text for ARM
247 - no more MAX_CLIENTS limitation; adapts to support the max number of fds
248 allowed to the process by ulimit, defaults to 1024 on Fedora and
249 Ubuntu. Use ulimit to control this without needing to configure
250 the library. Code here is smaller and faster.
252 - adaptive ratio of listen socket to connection socket service allows
253 good behaviour under Apache ab test load. Tested with thousands
254 of simultaneous connections
256 - reduction in per-connection memory footprint by moving to a union to hold
257 mutually-exclusive state for the connection
259 - robustness: Out of Memory taken care of for all allocation code now
261 - internal getifaddrs option if your toolchain lacks it (some uclibc)
263 - configurable memory limit for deflate operations
265 - improvements in SSL code nonblocking operation, possible hang solved,
266 some SSL operations broken down into pollable states so there is
267 no library blocking, timeout coverage for SSL_connect
269 - extpoll test server merged into single test server source
271 - robustness: library should deal with all recoverable socket conditions
273 - rx flowcontrol for backpressure notification fixed and implmeneted
274 correctly in the test server
276 - optimal lexical parser added for header processing; all headers in a
277 single 276-byte state table
279 - latency tracking api added (configure --with-latency)
281 - Improved in-tree documentation, REAME.build, README.coding,
282 README.test-apps, changelog
287 v1.0-chrome25-firefox17 (6cd1ea9b005933f)