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libwebsockets/minimal-examples/client-server/minimal-ws-proxy
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Andy Green d9f982a055 minimal examples: update for CSP best practices 
1) update the logos to svg

2) add svg icon for strict security policy where used

3) define new vhost option flag to enforce sending CSP headers
   with the result code

4) add vhost option flag to minimal examples to
   enforce sending CSP where applicable

5) Go through all the affecting examples confirming they
   still work

6) add LWS_RECOMMENDED_MIN_HEADER_SPACE constant (currently
   2048) to clarify when we need a buffer to hold headers...
   with CSP the headers have become potentially a lot
   larger.
2018-11-21 17:03:29 +08:00
..
mount-origin minimal examples: update for CSP best practices 2018-11-21 17:03:29 +08:00
CMakeLists.txt refactor: most preparation for -DLWS_ROLE_H1=0 2018-04-27 19:16:50 +08:00
minimal-ws-proxy.c minimal examples: update for CSP best practices 2018-11-21 17:03:29 +08:00
protocol_lws_minimal.c codacy: minor fixes 2018-10-13 08:16:27 +08:00
README.md minimal: refactor directories and add README.md 2018-04-06 10:38:02 +08:00

README.md

lws minimal ws proxy

Build

 $ cmake . && make

Description

This is the same as minimal-ws-server-ring, but with the inclusion of a ws client connection to https://libwebsockets.org using the dumb-increment protocol feeding the ringbuffer.

Each client that connect to this server receives the content that had arrived on the client connection feeding the ringbuffer proxied to their browser window over a ws connection.

Usage

 $ ./lws-minimal-ws-proxy 
[2018/03/14 17:50:10:6938] USER: LWS minimal ws proxy | visit http://localhost:7681
[2018/03/14 17:50:10:6955] NOTICE: Creating Vhost 'default' port 7681, 2 protocols, IPv6 off
[2018/03/14 17:50:10:6955] NOTICE:  Using non-SSL mode
[2018/03/14 17:50:10:7035] NOTICE: created client ssl context for default
[2018/03/14 17:50:11:7047] NOTICE: binding to lws-minimal-proxy
[2018/03/14 17:50:11:7047] NOTICE: lws_client_connect_2: 0x872e60: address libwebsockets.org
[2018/03/14 17:50:12:3282] NOTICE: lws_client_connect_2: 0x872e60: address libwebsockets.org
[2018/03/14 17:50:13:8195] USER: callback_minimal: established

Visit http://localhost:7681 on multiple browser windows

Data received on the remote wss connection is copied to all open browser windows.

A ringbuffer holds up to 8 lines of text in the server, and the browser shows the last 20 lines of received text.