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libwebsockets/minimal-examples/secure-streams/minimal-secure-streams-server/README.md
Andy Green 7eb36102a9 ss: server: h1, h2, ws basic support 
Add initial support for defining servers using Secure Streams
policy and api semantics.

Serving h1, h2 and ws should be functional, the new minimal
example shows a combined http + SS server with an incrementing
ws message shown in the browser over tls, in around 200 lines
of user code.

NOP out anything to do with plugins, they're not currently used.

Update the docs correspondingly.
2020-07-27 12:05:24 +01:00

4.3 KiB
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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