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109 commits

Author SHA1 Message Date
Andy Green
3f4623bb36 lws_metrics
There are a few build options that are trying to keep and report
various statistics

 - DETAILED_LATENCY
 - SERVER_STATUS
 - WITH_STATS

remove all those and establish a generic rplacement, lws_metrics.

lws_metrics makes its stats available via an lws_system ops function
pointer that the user code can set.

Openmetrics export is supported, for, eg, prometheus scraping.
2021-03-08 21:47:28 +00:00
Andy Green
d86d2884c8 libevent: use evutil_socket_t 2021-02-17 11:39:15 +00:00
Andy Green
56f7007185 ctest: adapt background script 2021-01-26 07:48:10 +00:00
Andy Green
beacabbdb1 vhost_destroy: refactor 2021-01-22 12:31:15 +00:00
Andy Green
bdf472b411 ctest: add tests for evlib foreign example
This just runs each of the eventlib-foreign cases that are enabled, it doesn't
do a client action during the test yet since that's hard to arrange with ctest,
but it will catch most breakage.

Change the LD_LIBRARY_PATH order when looking for evlib plugins, so that it
searches there first, if given
2021-01-22 12:25:03 +00:00
Christian Fuchs
b961e5f351 eventlib: add sd-event support 2021-01-11 08:12:46 +00:00
Andy Green
52b87c9037 minimal: h-s-form-post: only delete the spa once 2021-01-11 08:12:46 +00:00
Andy Green
c9731c5f17 type comparisons: fixes
This is a huge patch that should be a global NOP.

For unix type platforms it enables -Wconversion to issue warnings (-> error)
for all automatic casts that seem less than ideal but are normally concealed
by the toolchain.

This is things like passing an int to a size_t argument.  Once enabled, I
went through all args on my default build (which build most things) and
tried to make the removed default cast explicit.

With that approach it neither change nor bloat the code, since it compiles
to whatever it was doing before, just with the casts made explicit... in a
few cases I changed some length args from int to size_t but largely left
the causes alone.

From now on, new code that is relying on less than ideal casting
will complain and nudge me to improve it by warnings.
2021-01-05 10:56:38 +00:00
Andy Green
cc5a802b0d glib: workaround old glib without G_SOURCE_FUNC 2021-01-05 09:25:30 +00:00
Andy Green
19935e5861 minimal-h-s-tls: bind to default http-only 2020-12-24 16:14:36 +00:00
Andy Green
1d8be99cff cmake: latest cmake shows dep warnings for scripts < 2.8.12 2020-12-06 19:44:54 +00:00
Andy Green
3952c2598d zip-fops: example: add concompressed mount too 2020-12-01 16:30:19 +00:00
Andy Green
2329dc6968 zip-fops: example: correct zipfile serving path 2020-12-01 15:38:20 +00:00
Andy Green
d41bb16074 docs: force markdown to render correct path 2020-09-16 13:10:23 +01:00
Andy Green
c6c7ab2b44 event libs: default to building as dynamically loaded plugins
Event lib support as it has been isn't scaling well, at the low level
libevent and libev headers have a namespace conflict so they can't
both be built into the same image, and at the distro level, binding
all the event libs to libwebsockets.so makes a bloaty situation for
packaging, lws will drag in all the event libs every time.

This patch implements the plan discussed here

https://github.com/warmcat/libwebsockets/issues/1980

and refactors the event lib support so they are built into isolated
plugins and bound at runtime according to what the application says
it wants to use.  The event lib plugins can be packaged individually
so that only the needed sets of support are installed (perhaps none
of them if the user code is OK with the default poll() loop).  And
dependent user code can mark the specific event loop plugin package
as required so pieces are added as needed.

The eventlib-foreign example is also refactored to build the selected
lib support isolated.

A readme is added detailing the changes and how to use them.

https://libwebsockets.org/git/libwebsockets/tree/READMEs/README.event-libs.md
2020-08-31 16:51:37 +01:00
Andy Green
d98101d1e3 plugins: generalize and provide public api
Move the common plugin scanning dir stuff to be based on lws_dir, which
already builds for windows.  Previously this was done via dirent for unix
and libuv for windows.

Reduce the dl plat stuff to just wrap instantiation and destruction of
dynlibs, establish common code in lib/misc/dir.c for plugin scanning
itself.

Migrate the libuv windows dl stuff to windows-plugins.c, so that he's
available even if later libuv loop support becomes and event lib plugin.

Remove the existing api exports scheme for plugins, just export a const struct
now which has a fixed header type but then whatever you want afterwards depending
on the class / purpose of the plugin.  Place a "class" string in the header so
there can be different kinds of plugins implying different types exported.

Make the plugin apis public and add support for filter by class string, and
per instantation / destruction callbacks so the subclassed header type can
do its thing for the plugin class.  The user provides a linked-list base
for his class of plugins, so he can manage them completely separately and
in user code / user export types.

Rip out some last hangers-on from generic sessions / tables.

This is all aimed at making the plugins support general enough so it can
provide event lib plugins later.
2020-08-31 16:51:37 +01:00
Andy Green
62c328244c cmake: fix things ignoring LWS_WITH_TLS 2020-08-31 16:51:36 +01:00
Andy Green
1ebe27e38f cmake: mark all the subprojects as explicitly C
We don't need a C++ compiler but if we don't spell it out, cmake
assumes it C + C++ compiler needed.
2020-08-31 16:51:36 +01:00
Soumendra Ganguly
beacbbb38c minimal-examples: http-server-dyn: Check if the first part of received url is our mountpoint
In the case of the http-server-dyn example, there is only one protocol.
The mounts will override the area of the url space they are set up for,
and the "gaps" will fall back to the default protocol, which in turn
defaults to protocol[0] at the moment.  So you always get the dyn
protocol action on unknown parts of the URL space.

This solves that behaviour by adding a new protocols[0] that calls
straight through to the default protocol handler lws_callback_http_dummy(),
and moves the dyn handler to be protocols[1].

In addition it shows how to check the url path in the dyn handler for
cases where user code doesn't want to add the second protocol.
2020-07-27 11:53:50 +01:00
Andy Green
da7ef0468b cgi: add spawn reap callback 2020-07-20 06:28:52 +01:00
Andy Green
6ae43ee06e lws_wsi_close: add helper 2020-07-20 06:28:52 +01:00
Sergey Radionov
fbadad7f52 glibc: fixed GSources destroy with non-default main context 2020-07-20 06:27:40 +01:00
Andy Green
dfed547529 glib: stop leaking idle and hrtimer source
This gives a valgrind result for lws-minimal-http-server-event-lib-foreign
that's clean for lws pieces, although glib is always dirty wrt thread local
storage and hashtable.
2020-07-07 11:28:28 +01:00
Andy Green
6747ab830e content_info: make members conditional 2020-06-18 08:29:43 +01:00
Andy Green
b324f0e43b cmake: provide LIBWEBSOCKETS_DEP_LIBS in CONFIG 2020-06-16 19:45:35 +01:00
Andy Green
286cf4357a sul: multiple timer domains
Adapt the pt sul owner list to be an array, and define two different lists,
one that acts like before and is the default for existing users, and another
that has the ability to cooperate with systemwide suspend to restrict the
interval spent suspended so that it will wake in time for the earliest
thing on this wake-suspend sul list.

Clean the api a bit and add lws_sul_cancel() that only needs the sul as the
argument.

Add a flag for client creation info to indicate that this client connection
is important enough that, eg, validity checking it to detect silently dead
connections should go on the wake-suspend sul list.  That flag is exposed in
secure streams policy so it can be added to a streamtype with
"swake_validity": true

Deprecate out the old vhost timer stuff that predates sul.  Add a flag
LWS_WITH_DEPRECATED_THINGS in cmake so users can get it back temporarily
before it will be removed in a v4.2.

Adapt all remaining in-tree users of it to use explicit suls.
2020-06-02 08:37:10 +01:00
Andy Green
b3131fdfdd cmakelist: Augean Stables refactor
Establish a new distributed CMake architecture with CMake code related to
a source directory moving to be in the subdir in its own CMakeLists.txt.
In particular, there's now one in ./lib which calls through to ones
further down the directory tree like ./lib/plat/xxx, ./lib/roles/xxx etc.

This cuts the main CMakelists.txt from 98KB -> 33KB, about a 66% reduction,
and it's much easier to maintain sub-CMakeLists.txt that are in the same
directory as the sources they manage, and conceal all the details that that
level.

Child CMakelists.txt become responsible for:

 - include_directories() definition (this is not supported by CMake
   directly, it passes it back up via PARENT_SCOPE vars in helper
   macros)

 - Addition child CMakeLists.txt inclusion, for example toplevel ->
   role -> role subdir

 - Source file addition to the build

 - Dependent library path resolution... this is now a private thing
   in the child CMakeLists.txt, it just passes back any adaptations
   to include_directories() and the LIB_LIST without filling the
   parent namespace with the details
2020-05-27 08:40:12 +01:00
Andy Green
5623380803 libev: fix destroy path and example typo
https://github.com/warmcat/libwebsockets/issues/1913
2020-05-27 08:40:12 +01:00
Andy Green
9f1d019352 CTest: migrate and deprecate existing selftest scripts
Replace the bash selftest plumbing with CTest.

To use the selftests, build with -DLWS_WITH_MINIMAL_EXAMPLES=1
and `CTEST_OUTPUT_ON_FAILURE=1 make test` or just
`make test`.

To disable tests that require internet access, also give
-DLWS_CTEST_INTERNET_AVAILABLE=0

Remove travis and appveyor scripts on master.

Remove travis and appveyor decals on README.md.
2020-05-11 15:40:13 +01:00
Kyle Greenwell
bebd3f71a6 h2: add prior knowledge support 2020-05-08 18:56:17 +01:00
Andy Green
d3308df40f windows: pthreads
Add support for external pthreads lib on windows and some docs about how to do.

It can build with LWS_WITH_THREADPOOL and LWS_WITH_MINIMAL_EXAMPLES including the
pthreads-dependent ones without warnings or errors on windows platform as well with this.

pthreads_t can be anything, including a struct - not a pointer-to-a-struct
but the struct itself.  These can't be cast to a void * for printing as they can
on linux, where the base type is a pointer.

Let's fix all the usage of those to determine their own thread index in terms
of the meaning to the program rather than as a tid.
2020-04-07 14:05:21 +01:00
Andy Green
954fcf2bc3 windows: clean LWS_WITH_MINIMAL_EXAMPLES warnings
Fix pthreads detection in the minimal examples and add it where needed.
Fix unistd.h include to be conditional on not WIN32

With this, -DLWS_WITH_MINIMAL_EXAMPLES=1 is happy and warning-free
on windows.
2020-04-07 10:09:51 +01:00
Andy Green
e783a6ca6e minimal: rediscover event loop lib paths
Building the examples may face the same situations as building lws with
the same dependencies, bring over the same CMakeLists.txt approach
2020-03-24 18:59:36 +00:00
Andy Green
4f6143fff0 lws logo: update minimal examples 2020-03-06 04:46:39 +00:00
Andy Green
bb1a8d37fb rtos diet: make basic auth support a config option on by default
Remove wrapper content for < tls v1.2
2020-03-04 11:00:04 +00:00
Andy Green
8a7e0edb7d lws_spawn_piped: break out from cgi
The vfork optimized spawn, stdxxx and terminal handling in the cgi
implementation is quite mature and sophisticated, and useful for
other things unrelated to cgi.  Break it out into its own public
api under LWS_WITH_SPAWN, off by default.

Expand it so the parent wsi is optional, and the role and protocol
bindings for stdxxx pipes can be set.  Allow optional sul timeout
and external lws_dll2 owner for extant children.

Remove inline style from minimal http-server-cgi
2020-02-21 17:32:41 +00:00
sergey radionov
c966aae30a event lib: glib: LWS_WITH_GLIB option fixes 2020-02-21 17:32:41 +00:00
Andy Green
af2f1f9a87 event-lib-glib
Adds support for glib event library.
2020-02-21 17:32:41 +00:00
Andy Green
5055096e47 clean: codacy 2020-01-14 10:06:26 +00:00
Andy Green
0bfd39135e cleaning 2020-01-05 22:17:58 +00:00
Andy Green
092ebf9879 cgi: minimal example 2019-11-20 05:20:59 +00:00
Andy Green
0f7f27801e http redirect: 303: force method to GET
This teaches http client stuff how to handle 303 redirects... these
can happen after POST where the server side wants you to come back with
a GET to the Location: mentioned.

lws client will follow the redirect and force GET, this works for both
h1 and h2.  Client protocol handler has to act differently if it finds
it is connecting for the initial POST or the subsequent GET, it can
find out which by checking a new api lws_http_is_redirected_to_get(wsi)
which returns nonzero if in GET mode.

Minimal example for server form-post has a new --303 switch to enable
this behaviour there and the client post example has additions to
check lws_http_is_redirected_to_get().
2019-11-17 10:47:01 +00:00
Andy Green
cc425b1b98 get_peer_simple: add to minimal-http-server-dynamic 2019-10-12 12:41:14 +01:00
Andy Green
6a6f365ce7 semmle: fix warnings
They're all cosmetic or minor js stuff.

Add related shield.io icons to README.
2019-09-22 09:35:07 -07:00
Andy Green
f9f6bb66fe lws_validity: unified connection validity tracking
Refactor everything around ping / pong handling in ws and h2, so there
is instead a protocol-independent validity lws_sul tracking how long it
has been since the last exchange that confirms the operation of the
network connection in both directions.

Clean out periodic role callback and replace the last two role users
with discrete lws_sul for each pt.
2019-09-22 09:35:07 -07:00
Andy Green
ba754c4cb2 h2: unify immortal stream tracking across SSE and ws substreams
It was already correct but add helpers to isolate and deduplicate
processing adding and closing a generically immortal stream.

Change the default 31s h2 network connection timeout to be settable
by .keepalive_timeout if nonzero.

Add a public api allowing a client h2 stream to transition to
half-closed LOCAL (by sending a 0-byte DATA with END_STREAM) and
mark itself as immortal to create a read-only long-poll stream
if the server allows it.

Add a vhost server option flag LWS_SERVER_OPTION_VH_H2_HALF_CLOSED_LONG_POLL
which allows the vhost to treat half-closed remotes as immortal long
poll streams.
2019-09-22 03:08:36 -07:00
Andy Green
c36a1e8ed0 clean: internally use LWS_WITH_CLIENT and _SERVER
Remove some more things in LWS_WITH_SERVER=0 case
2019-08-26 09:58:57 +01:00
Andy Green
26319663f7 license: switch LGPLv2.1+SLE parts to MIT 2019-08-14 10:44:38 +01:00
Andy Green
498a4e2bd7 sul: all timed objects use a single pt sul list
wsi timeout, wsi hrtimer, sequencer timeout and vh-protocol timer
all now participate on a single sorted us list.

The whole idea of polling wakes is thrown out, poll waits ignore the
timeout field and always use infinite timeouts.

Introduce a public api that can schedule its own callback from the event
loop with us resolution (usually ms is all the platform can do).

Upgrade timeouts and sequencer timeouts to also be able to use us resolution.

Introduce a prepared fakewsi in the pt, so we don't have to allocate
one on the heap when we need it.

Directly handle vh-protocol timer if LWS_MAX_SMP == 1
2019-08-09 10:12:09 +01:00
Andy Green
bd36962c17 openssl: add threading apis needed for 1.0.2 and earlier
In later OpenSSL, eg 1.1.1, these apis are NOPs in OpenSSL.
They are required for normal operation with multithreading
on earlier OpenSSL, eg, 1.0.2k
2019-08-02 09:47:23 +01:00