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libwebsockets/minimal-examples/secure-streams/minimal-secure-streams-server
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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
..
CMakeLists.txt cmake: latest cmake shows dep warnings for scripts < 2.8.12 2020-12-06 19:44:54 +00:00
main.c ss: multipart without processing 2020-08-11 11:07:13 +01:00
README.md ss: server: h1, h2, ws basic support 2020-07-27 12:05:24 +01:00
ss-client.c type comparisons: fixes 2021-01-05 10:56:38 +00:00
ss-server.c type comparisons: fixes 2021-01-05 10:56:38 +00:00

README.md

lws minimal secure streams server

The application sets up a tls + ws server on https://localhost:7681

It does it using Secure Streams... information about how the server should operate is held in JSON policy in main.c

Visiting the server in a modern browser will fetch some html + JS, the JS will create a ws link back to the server and the server will spam an incrementing number that is displayed in the browser every 100ms.

The app also has a SS client that works, but it's disabled by default since we're interested in server.

build

 $ cmake . && make

usage

Commandline option Meaning
-d Debug verbosity in decimal, eg, -d15 
[2020/07/27 10:51:04:8994] U: LWS Secure Streams Server
[2020/07/27 10:51:04:9440] N: LWS: 4.0.99-v4.0.0-245-ge6eb4417a, loglevel 1031
[2020/07/27 10:51:04:9444] N: NET CLI SRV H1 H2 WS MQTT SS-JSON-POL SSPROX ASYNC_DNS IPv6-absent
[2020/07/27 10:51:05:1685] N: lws_adopt_descriptor_vhost2: wsi 0x5317d30, vhost system ss_handle (nil)
[2020/07/27 10:51:05:1753] N: lws_adopt_descriptor_vhost2: wsi 0x53182c0, vhost system ss_handle (nil)
[2020/07/27 10:51:05:2129] N: lws_ss_policy_parser_cb: server 'self_localhost' keep 52 0x5318cc0
[2020/07/27 10:51:05:2134] N: lws_ss_policy_parser_cb: server 'self_localhost_key' keep 53 0x5318cf8
[2020/07/27 10:51:05:2192] N: lws_ss_policy_ref_trust_store: le_via_isrg trust store initial 'isrg_root_x1'
[2020/07/27 10:51:05:7804] N: smd_cb: creating server stream
[2020/07/27 10:51:05:7851] N:  Vhost 'myserver' using TLS mode
[2020/07/27 10:51:05:8660] N:  SSL ECDH curve 'prime256v1'
[2020/07/27 10:51:06:1035] N:    vhost myserver: cert expiry: 729599d
[2020/07/27 10:51:06:1039] N: lws_ss_create: created server myserver
[2020/07/27 10:51:11:8650] N: lws_adopt_descriptor_vhost2: wsi 0x5b046e0, vhost myserver ss_handle 0x56e2be0
[2020/07/27 10:51:11:8672] U: myss_srv_state: 0x5b52f60 LWSSSCS_CREATING, ord 0x0
[2020/07/27 10:51:11:8693] U: myss_srv_state: 0x5b52f60 LWSSSCS_CONNECTING, ord 0x0
[2020/07/27 10:51:11:8696] U: myss_srv_state: 0x5b52f60 LWSSSCS_CONNECTED, ord 0x0
[2020/07/27 10:51:11:9743] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_CREATING, ord 0x0
[2020/07/27 10:51:11:9747] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_CONNECTING, ord 0x0
[2020/07/27 10:51:11:9747] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_CONNECTED, ord 0x0
[2020/07/27 10:51:12:0192] U: myss_srv_state: 0x5bad0a0 LWSSSCS_CREATING, ord 0x0
[2020/07/27 10:51:12:0193] U: myss_srv_state: 0x5bad0a0 LWSSSCS_CONNECTING, ord 0x0
[2020/07/27 10:51:12:0194] U: myss_srv_state: 0x5bad0a0 LWSSSCS_CONNECTED, ord 0x0
[2020/07/27 10:51:12:0306] N: secstream_h1: LWS_CALLBACK_HTTP
[2020/07/27 10:51:12:0329] U: myss_srv_state: 0x5bad0a0 LWSSSCS_SERVER_TXN, ord 0x0
[2020/07/27 10:51:12:0481] N: lws_h2_ws_handshake: Server SS 0x5ba2bd0 .wsi 0x5ba27b0 switching to ws protocol
[2020/07/27 10:51:12:0484] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_SERVER_UPGRADE, ord 0x0
[2020/07/27 10:51:12:0541] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_CONNECTED, ord 0x0
[2020/07/27 10:51:12:1222] U: myss_srv_state: 0x5bd1100 LWSSSCS_CREATING, ord 0x0
[2020/07/27 10:51:12:1222] U: myss_srv_state: 0x5bd1100 LWSSSCS_CONNECTING, ord 0x0
[2020/07/27 10:51:12:1223] U: myss_srv_state: 0x5bd1100 LWSSSCS_CONNECTED, ord 0x0
[2020/07/27 10:51:12:1242] N: lws_h2_ws_handshake: Server SS 0x5bd1100 .wsi 0x5bd0ce0 switching to ws protocol
[2020/07/27 10:51:12:1243] U: myss_srv_state: 0x5bd1100 LWSSSCS_SERVER_UPGRADE, ord 0x0
[2020/07/27 10:51:12:1246] U: myss_srv_state: 0x5bd1100 LWSSSCS_CONNECTED, ord 0x0
^C[2020/07/27 10:51:15:2809] U: myss_srv_state: 0x5bad0a0 LWSSSCS_DISCONNECTED, ord 0x0
[2020/07/27 10:51:15:2838] U: myss_srv_state: 0x5bad0a0 LWSSSCS_DESTROYING, ord 0x0
[2020/07/27 10:51:15:2938] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_DISCONNECTED, ord 0x0
[2020/07/27 10:51:15:2946] U: myss_srv_state: 0x5ba2bd0 LWSSSCS_DESTROYING, ord 0x0
[2020/07/27 10:51:15:2952] U: myss_srv_state: 0x5bd1100 LWSSSCS_DISCONNECTED, ord 0x0
[2020/07/27 10:51:15:2953] U: myss_srv_state: 0x5bd1100 LWSSSCS_DESTROYING, ord 0x0
[2020/07/27 10:51:15:2960] U: myss_srv_state: 0x5b52f60 LWSSSCS_DISCONNECTED, ord 0x0
[2020/07/27 10:51:15:2961] U: myss_srv_state: 0x5b52f60 LWSSSCS_DESTROYING, ord 0x0
[2020/07/27 10:51:15:3042] U: myss_srv_state: 0x56e2be0 LWSSSCS_DESTROYING, ord 0x0
[2020/07/27 10:51:15:3378] U: Completed: OK