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114 commits

Author SHA1 Message Date
Andy Green
fdf8a5f931 lws_mutex
Add a simple platform wrapper around OS mutexes.
*nix and windows == pthreads
freertos = SemaphoreHandle
2020-06-16 19:45:35 +01:00
Andy Green
e9b3898c99 spawn: retry when last stdwsi close may not be immediately followed by reapable process 2020-06-04 10:12:08 +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
911898ad70 windows: recent win10 support Unix Domain
Allow selection of Unix Domain Sockets on windows since it is supported
for the last couple of years on windows 10

https://devblogs.microsoft.com/commandline/af_unix-comes-to-windows/

... if only they could add a full set of posix pieces to go with it
(and abstract namespace UDS which doesn't work apparently) so that
the parts dealing with uid / gid don't have to be disabled.
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
71f6f9a1f9 win: deal with FD_CONNECT better
POSIX connect() specifies it will signal POLLOUT available when
the connect result is available.  But windows has some non-posix
nonsense.

Improve the plat support to simulate the missing POLLOUT.
2020-05-27 08:40:12 +01:00
Andy Green
36ec353dac client: allow setting overall connect timeout from vh init
Add a member to the vh init struct allowing control of the overall
connection wait introduced in an earlier patch.  Set it to 20s
by default.


The timeout_secs member controls the individual DNS result
connect timeout and is reduced to 5s by default.
2020-05-26 17:05:39 +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
Andy Green
3d995cf7c5 fds: add sanity checks 2020-05-05 06:34:58 +01:00
Andy Green
c95706a17f ntpclient: add plat-specific init with env var LWS_NTP_SERVER able to set it on unix and windows
Trying to use a remote pool is very variable with CI, the builder can
force a local ntpd this way cleanly.

When enabled all the test apps use ntpclient, so this lets us tell them all to
go to the local ntpd in one hit.
2020-04-25 15:11:21 +01:00
Andy Green
8299bd4191 windows: async dns find DNS server using modern api 2020-04-17 12:39:53 +01:00
Andy Green
a8ad5068e4 windows: fix service for udp and pending tls delays
UDP: call to recv() in there for unknown reasons was trashing udp

delays: pending tls (where data is buffered and no pending POLLIN)
was not reflected in forcing the wait to 0 properly.
2020-04-17 12:39:53 +01:00
Andy Green
63c8a23776 lws_spawn: windows
Move the unix spawn.c from lib/misc through to lib/plat/unix, and
add an implementation for windows in lib/plat/windows
2020-04-13 19:29:09 +01:00
Andy Green
ff53a89db2 windows: async dns: fix typo 2020-04-10 17:49:19 +01:00
Andy Green
1a8833dcfd windows: ipv6 compile fix
Via turtiain

https://github.com/warmcat/libwebsockets/issues/1880
2020-04-07 10:09:00 +01:00
Andy Green
be32d0554e mbedtls: attempt to remove dependency on net_sockets.c
The mbedtls openssl wrapper wants to use exports from mbedtls' net_sockets.c,
but this is only supposed to work on *nix and windows.  Typically people
are using mbedtls on RTOS type platforms and to use it, net_sockets.c
needs some hacking.

Try to avoid that situation by porting the two exports we need into the
lws plat code and call from the wrapper.
2020-03-27 13:24:44 +00:00
Andy Green
d88d41090e cleaning: windows 2020-03-04 12:17:49 +00:00
Andy Green
157acfc906 windows: clean type warnings
There are some minor public api type improvements rather than cast everywhere
inside lws and user code to work around them... these changed from int to
size_t

 - lws_buflist_use_segment() return
 - lws_tokenize_t .len and .token_len
 - lws_tokenize_cstr() length
 - lws_get_peer_simple() namelen
 - lws_get_peer_simple_fd() namelen, int fd -> lws_sockfd_type fd
 - lws_write_numeric_address() len
 - lws_sa46_write_numeric_address() len

These changes are typically a NOP for user code
2020-01-11 14:04:50 +00:00
Andy Green
86fe71fdf3 lws_get_random: change length to size_t for coverity 2020-01-11 07:58:37 +00:00
Andy Green
0bfd39135e cleaning 2020-01-05 22:17:58 +00:00
Andy Green
08fac7a1f7 unix: sul schedule rename internal api and call regardless of existing timeout
Pre-sul, checking for interval to next pending scheduled event was expensive and
iterative, so the service avoided it if the wait was already 0.

With sul though, the internal "check" function also services ripe events and
removes them, and finding the interval to the next one is really cheap.

Rename the "check" function to __lws_sul_service_ripe() to make it clear it's
not just about returning the interval to the next pending one.  And call it
regardless of if we already decided we are not going to wait in the poll.

After https://github.com/warmcat/libwebsockets/pull/1745
2019-11-01 07:07:33 +00:00
Kristján Valur Jónsson
7e150b2188 windows: service: do sul check and service regardless of service timeout 2019-11-01 06:45:51 +00:00
Kristján Valur Jónsson
9ef5cbee01 Use IPPROTO_TCP if getprotobyname("tcp") fails. 2019-10-28 13:20:43 +00:00
Kristján Valur Jónsson
c50479d021 Improve logging when setting sock opts on windows 2019-10-27 16:38:02 +00:00
Kristján Valur Jónsson
f5ccdd1825 windows: clean warnings around int usage
Change all plat instances of lws_plat_setnonblocking() to use lws_sockfd_type
2019-10-23 06:39:35 +01:00
Kristján Valur Jónsson
afb7b30f0d windows: LWS_EXTERN must be 'extern' if not building DLL
if it is simply empty, header declarations of externally defined arrays will fail.
2019-10-23 06:33:22 +01:00
Andy Green
3c95483518 adopt: udp iface and AF_PACKET 2019-10-12 12:41:14 +01:00
Andy Green
a97347a18e service: resurrect timeout_ms being -1 as return immediately
There's no longer any reason to come out of sleep for periodic service
which has been eliminated by lws_sul.

With event libs, there is no opportunity to do it anyway since their
event loop is atomic and makes callbacks and sleeps until it is stopped.

But some users are relying on the old poll() service loop as
glue that's difficult to replace.  So for now help that happen by
accepting the timeout_ms of -1 as meaning sample poll and service
what's there without any wait.
2019-09-22 03:08:36 -07:00
Andy Green
c591e1adfc asynchronous dns for ipv4 and ipv6
This adds the option to have lws do its own dns resolution on
the event loop, without blocking.  Existing implementations get
the name resolution done by the libc, which is blocking.  In
the case you are opening client connections but need to carefully
manage latency, another connection opening and doing the name
resolution becomes a big problem.

Currently it supports

 - ipv4 / A records
 - ipv6 / AAAA records
 - ipv4-over-ipv6 ::ffff:1.2.3.4 A record promotion for ipv6
 - only one server supported over UDP :53
 - nameserver discovery on linux, windows, freertos

It also has some nice advantages

 - lws-style paranoid response parsing
 - random unique tid generation to increase difficulty of poisoning
 - it's really integrated with the lws event loop, it does not spawn
   threads or use the libc resolver, and of course no blocking at all
 - platform-specific server address capturing (from /etc/resolv.conf
   on linux, windows apis on windows)
 - it has LRU caching
 - piggybacking (multiple requests before the first completes go on
   a list on the first request, not spawn multiple requests)
 - observes TTL in cache
 - TTL and timeout use lws_sul timers on the event loop
 - ipv6 pieces only built if cmake LWS_IPV6 enabled
2019-09-19 06:54:53 +01:00
Andy Green
a20fa90cfe sul: remove NULL service calls from all plats 2019-09-06 15:30:51 +01:00
Andy Green
d7f0521aeb private.h: rename to contain dir
Having unique private header names is a requirement of a particular
platform build system it's desirable to work with
2019-08-15 10:49:52 +01:00
Andy Green
26319663f7 license: switch LGPLv2.1+SLE parts to MIT 2019-08-14 10:44:38 +01:00
Andy Green
2fc35ef6bd stats: move to pt and improve presentation 2019-08-12 06:18:04 +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
fed78bef42 sequencer: upgrade timeout to use us
Adapt service loops and event libs to use microsecond waits
internally, for hrtimer and sequencer.  Reduce granularity
according to platform / event lib wait.

Add a helper so there's a single place to extend it.
2019-08-08 09:45:09 +01:00
hjfbswb
119fddbacb solve compilation problems on vs2012 2019-08-01 18:05:30 +01:00
Jim Borden
477d50bf56 Add locking into the cancellation process
To avoid racing on the set and reset of interrupt_requested
2019-06-25 12:08:49 +01:00
Jim Borden
1979bd8cc9 Make the Windows pipe more responsive
Otherwise it often forgets to inform about event loop interrupts.  Add a flag to the per thread context, set it in the signal function, then check / reset it in the service method.
2019-06-25 12:08:39 +01:00
Andy Green
80135635bb permissions: adapt drop permissions plat function to do uid and gid lookup separately 2019-05-02 09:28:25 +01:00
Andy Green
9e347e66ce plugins: remove requirement for libuv on unix 2019-05-02 09:28:16 +01:00
Kieran
a92cf6533f windows: fix build on VS2017 WIN10 2019-04-02 07:52:39 +08:00
Andy Green
ce1f395ead context: add info members to drop privileges using user and group name strings
Up until now if you wanted to drop privs, a numeric uid and gid had to be
given in info to control post-init permissions... this adds info.username
and info.groupname where you can do the same using user and group names.

The internal plat helper lws_plat_drop_app_privileges() is updated to directly use
context instead of info both ways it can be called, and to be able to return fatal
errors.

All failures to lookup non-0 or -1 uid or gid names from uid, or to look up
uid or gid from username or groupnames given, get an err message and fatal exit.
2019-03-26 14:54:49 +08:00
Andy Green
9c7162f253 windows: prepare for udp 2019-03-14 21:52:53 +08:00
Andy Green
f8cd973f85 mingw: windows: make minimal examples build 2019-03-10 08:02:02 +08:00
Andy Green
09fe212432 bzero: replace all with memset
lws_explicit_bzero() is available if the goal is to have volatile zeroing.
2019-03-10 08:02:02 +08:00
Andy Green
c741f71465 adopt: force incoming fd to nonblocking
Incoming fds muct be nonblocking for any event loop... add a platform
api to do that and call it during adopt.
2019-03-10 08:02:02 +08:00
Andy Green
84a57540ab LWS_WITH_NETWORK: cmake option for no network code 2019-01-13 07:54:57 +08:00
Bitomaxsp
b4161f5e97 windows: socket keepalive valid is ms
https://github.com/warmcat/libwebsockets/issues/1477
2019-01-13 07:54:56 +08:00
John Kamp
30315ec688 windows: proposed fix for CANCELLED
https://github.com/warmcat/libwebsockets/issues/1291
2018-12-07 21:13:19 +08:00
Andy Green
cdd8ad702c bind: treat EADDRINUSE as fatal
The retry stuff for bind failures is actually aimed at the scenarios the interface
either doesn't exist yet, or is not configured enough (having an IP) to be bindable yet.

This patch treats EADDRINUSE as fatal at vhost init.
2018-11-22 17:58:30 +08:00