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15 commits

Author SHA1 Message Date
Andy Green
dcaa0013b4 lecp: add CBOR stream parser LECP like JSON LEJP
This provides very memory-efficient CBOR stream parsing
and writing.

The parser  converts pieces of CBOR into callbacks that define
the structure and collate string and blobs into buffer chunks
for extensible and easy access.

It is fragementation-safe and does not need all the CBOR in
the same place at one time, chunks of CBOR are parsed and
discarded as provided.

It does not allocate and just needs a few hundred bytes of
stack for even huge CBOR objects.  Huge strings and blobs
are handled without needing memory to hold them atomically.

Includes ./minimal-examples/api-tests/api-test-lecp that
unit tests it against 82 official example CBORs and
26 additional test vectors from COSE (just checking the CBOR
parsing).

The writing apis allow printf style semantics with a variety
of CBOR-aware %-formats.  The apis write into a context that
manages output buffer usage, if the output buffer fills,
then the apis return with an AGAIN code that lets you issue
and reset the output buffer and repeat the api all to issue
more output.  The subsequent calls can occur much later or
from a different function context, so this is perfect for
WRITEABLE-mediated output from the network parts of lws.

See ./READMEs/README.cbor-lecp.md
2021-08-21 17:44:40 +01:00
Andy Green
2f9bb7a30a tls: JIT Trust
Add support for dynamically determining the CAs needed to validate server
certificates.  This allows you to avoid instantiating > 120 X.509 trusted
CA certs and have them take up heap the whole time.

Works for both openssl and mbedtls.

See READMEs/README.jit-trust.md for the documentation

You likely want the next patch for http redirect enhancements as well.
2021-06-22 15:55:29 +01:00
Andy Green
a12d5ebed6 LICENSE: copy secondary license texts into LICENSE as a convenience 2021-05-04 15:51:45 +01:00
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
26319663f7 license: switch LGPLv2.1+SLE parts to MIT 2019-08-14 10:44:38 +01:00
Andy Green
1f6cbbe7a5 update LICENSE against refactors 2018-05-07 11:27:50 +08:00
Andy Green
4f267c515e clean up top level of project 2017-09-27 08:24:05 +08:00
Juraj Vijtiuk
77a71e94d1 mbedtls: Add mbedTLS wrapper
This wrapper has come from Espressif's esp-idf

https://github.com/espressif/esp-idf/tree/master/components/openssl

under Apache 2.0, at or around commit

3e4627479b6fff6b652de6d2f0302101e51ee5c2
2017-08-28 20:13:58 +08:00
Andy Green
d12b3df953 LICENSE: clarify exceptions also apply to LGPL self-refernences
via Mike Atamas, Counsel for Epic Games
2017-05-19 09:25:54 +08:00
Andy Green
0c984014f0 lwsws license to cc0
https://github.com/warmcat/libwebsockets/issues/629
2016-09-19 19:16:47 +08:00
Andy Green
cd0c696a0d lwsws Libwebsockets Web Server
This makes a start on the LibWebSockets WebServer.

The app cmake build support and JSON config parsing are implemented and
the app can start, create the vhosts, listen and serve file:// mounts on
them.

Signed-off-by: Andy Green <andy@warmcat.com>
2016-03-28 10:49:57 +08:00
Andy Green
ce0326b839 libwebsockets.org url updates
Signed-off-by: Andy Green <andy.green@linaro.org>
2016-02-21 10:42:46 +08:00
Andy Green
083c73e7e9 license clarification and test apps CC zero
Signed-off-by: Andy Green <andy.green@linaro.org>
2016-02-08 08:44:21 +08:00
Andy Green
c11b587aed add static linking exception to LICENSE
Signed-off-by: Andy Green <andy.green@linaro.org>
2013-02-07 23:44:21 +08:00
Andy Green
750200121e add unchanged lgpl 2.1 in LICENSE
Signed-off-by: Andy Green <andy.green@linaro.org>
2013-02-07 23:43:56 +08:00