1
0
Fork 0
mirror of https://github.com/warmcat/libwebsockets.git synced 2025-03-16 00:00:07 +01:00
Commit graph

96 commits

Author SHA1 Message Date
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
Andy Green
da444d04d1 lws_time_in_microseconds: export
Rename time_in_microseconds() and export the internal
api as lws_time_in_microseconds()
2018-10-14 06:15:36 +08:00
Andy Green
33a6034875 codacy: minor fixes 2018-10-13 08:16:27 +08:00
Andy Green
95f3eb2980 plat: ENOTCONN 2018-09-11 18:27:59 +08:00
Andy Green
d58828692e http: compression methods
Add generic http compression layer eanbled at cmake with LWS_WITH_HTTP_STREAM_COMPRESSION.

This is wholly a feature of the HTTP role (used by h1 and h2 roles) and doesn't exist
outside that context.

Currently provides 'deflate' and 'br' compression methods for server side only.

'br' requires also -DLWS_WITH_HTTP_BROTLI=1 at cmake and the brotli libraries (available in
your distro already) and dev package.

Other compression methods can be added nicely using an ops struct.

The built-in file serving stuff will use this is the client says he can handle it, and the
mimetype of the file either starts with "text/" (html and css etc) or is the mimetype of
Javascript.

zlib allocates quite a bit while in use, it seems to be around 256KiB per stream.  So this
is only useful on relatively strong servers with lots of memory.  However for some usecases
where you are serving a lot of css and js assets, it's a nice help.

The patch performs special treatment for http/1.1 pipelining, since the compression is
performed on the fly the compressed content-length is not known until the end.  So for h1
only, chunked transfer-encoding is automatically added so pipelining can continue of the
connection.

For h2 the chunking is neither supported nor required, so it "just works".

User code can also request to add a compression transform before the reply headers were
sent using the new api

LWS_VISIBLE int
lws_http_compression_apply(struct lws *wsi, const char *name,
			   unsigned char **p, unsigned char *end, char decomp);

... this allows transparent compression of dynamically generated HTTP.  The requested
compression (eg, "deflate") is only applied if the client headers indicated it was
supported, otherwise it's a NOP.

Name may be NULL in which case the first compression method in the internal table at
stream.c that is mentioned as acceptable by the client will be used.

NOTE: the compression translation, same as h2 support, relies on the user code using
LWS_WRITE_HTTP and then LWS_WRITE_HTTP_FINAL on the last part written.  The internal
lws fileserving code already does this.
2018-09-02 14:43:05 +08:00
Andy Green
90e6e65bff partial: replace ad-hoc code with a wsi buflist_out
Various kinds of input stashing were replaced with a single buflist before
v3.0... this patch replaces the partial send arrangements with its own buflist
in the same way.

Buflists as the name says are growable lists of allocations in a linked-list
that take care of book-keeping what's added and removed (even if what is
removed is less than the current buffer on the list).

The immediate result is that we no longer have to freak out if we had a partial
buffered and new output is coming... we can just pile it on the end of the
buflist and keep draining the front of it.

Likewise we no longer need to be rabid about reporting multiple attempts to
send stuff without going back to the event loop, although not doing that
will introduce inefficiencies we don't have to term it "illegal" any more.

Since buflists have proven reliable on the input side and the logic for dealing
with truncated "non-network events" was already there this internal-only change
should be relatively self-contained.
2018-08-20 12:02:26 +08:00
Frank May
2cddfc963b windows: fix timeout between writes on Windows
After servicing a writable socket, we need to set timeout_ms
to zero. This makes WSAWaitForMultipleEvents() return immediately
after checking events.
2018-08-19 06:44:19 +08:00
Frank May
248826d7fc windows: Remove useless code
WSASetEvent(pt->events) just makes WSAWaitForMultipleEvents()
return, it will not set LWS_POLLOUT in pfd->revents and thus
has IMHO no effect. If WSAWaitForMultipleEvents() will set
LWS_POLLOUT it will also signal the event automatically.
2018-08-19 06:44:03 +08:00
Frank May
e17820cf67 windows: fix possible crash
Checking for (!wsi) does not make sense, if wsi is
dereferenced in the line above.
2018-08-19 06:43:49 +08:00
Andy Green
d461f46a97 libwebsockets.h: clean out some boilerplate better put in core/private.h
https://github.com/warmcat/libwebsockets/issues/1370
2018-08-16 19:10:32 +08:00
Andy Green
69d9cf2e6b coverity: cleanup 2018-08-14 08:00:30 +08:00
Andy Green
cfeb196479 client: SMP: associate client with tsi of thread creating client connection
1) This moves the service tid detection stuff from context to pt.

2) If LWS_MAX_SMP > 1, a default pthread tid detection callback is provided
   on the dummy callback.  Callback handlers that call through to the dummy
   handler will inherit this.  It provides an int truncation of the pthread
   tid.

3) If there has been any service calls on the service threads, the pts now
   know the low sizeof(int) bytes of their tid.  When you ask for a client
   connection to be created, it looks through the pts to see if the calling
   thread is a pt service thread.  If so, the new client is set to use the
   same pt as the caller.
2018-08-14 08:00:30 +08:00
shinny-chengzhi
5740356d9a Fix I/O hang after received a large deflate frame
When a large deflate frame been received, WSAEnumNetworkEvents will indicate the socket is ready to read. And because the frame is compressed, it may not be consumed entirely(not all bytes ready to receive have been received), since WSAEnumNetworkEvents is edge triggered, and the socket read buffer never been drained, WSAEnumNetworkEvents will never indicate the socket is ready to read again. What here need is level trigger behavior, thus add additional recv with empty buffer to reset edge status.
2018-07-11 15:14:01 +08:00
Andy Green
f2f96857d6 fd_cloexec: add and use lws_open wrapper and lws_plat_apply_FD_CLOEXEC() on cgi 2018-06-23 12:56:21 +08:00
Andy Green
df1d60fc1a plat: refactor private headers and split files
Also remove LWS_VISIBLE that are not necessary from plat apis
2018-06-20 16:41:27 +08:00