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libwebsockets/minimal-examples/raw/minimal-raw-fallback-http-server
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Andy Green f7149e90c2 cc0: align dedication to CC0 FAQ recommended format 
https://libwebsockets.org/pipermail/libwebsockets/2019-April/007937.html

thanks to Bruce Perens for noting it.

This doesn't change the intention or status of the CC0 files, they were
pure CC0 before (ie, public domain) and they are pure CC0 now.  It just
gets rid of the (C) part at the top of the dedication which may be read
to be a bit contradictory since the purpose is to make it public domain.
2019-05-02 09:29:01 +01:00
..
mount-origin adopt: allow associated accepted vhost connections to specific role 2018-12-01 11:05:59 +08:00
CMakeLists.txt adopt: allow associated accepted vhost connections to specific role 2018-12-01 11:05:59 +08:00
localhost-100y.cert adopt: allow associated accepted vhost connections to specific role 2018-12-01 11:05:59 +08:00
localhost-100y.key adopt: allow associated accepted vhost connections to specific role 2018-12-01 11:05:59 +08:00
minimal-raw-fallback-http-server.c cc0: align dedication to CC0 FAQ recommended format 2019-05-02 09:29:01 +01:00
README.md role: raw-proxy 2018-12-01 11:05:59 +08:00

README.md

lws minimal raw fallback http server

This is the same as the minimal http server, with one difference... if you connect to localhost:7681 with something that doesn't send recognizable http, then the connection will be switched to a raw-skt role and bind to a protocol that echoes anything sent back to the sender.

build

 $ cmake . && make

usage

Commandline option Meaning
-d Debug verbosity in decimal, eg, -d15
-s Configure the server for tls / https and LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT
-h (needs -s) Configure the vhost also for LWS_SERVER_OPTION_ALLOW_HTTP_ON_HTTPS_LISTENER, allowing http service on tls port (caution... it's insecure then)
-u (needs -s) Configure the vhost also for LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS, so the server issues a redirect to https to clients that attempt to connect to a server configured for tls with http. 
 $ ./lws-minimal-raw-fallback-http-server
[2018/11/29 14:27:34:3014] USER: LWS minimal raw fallback http server | visit http://localhost:7681
[2018/11/29 14:27:34:3243] NOTICE: Creating Vhost 'default' port 7681, 1 protocols, IPv6 off

Visit http://127.0.0.1:7681

This allows testing of various combinations of special features for unexpected content on an http(s) listening socket.

cmdline args http://127.0.0.1:7681 https://127.0.0.1:7681 ssh -p7681 127.0.0.1 flags
none served no tls echos hello LWS_SERVER_OPTION_FALLBACK_TO_APPLY_LISTEN_ACCEPT_CONFIG
-s echos http GET served echos hello LWS_SERVER_OPTION_FALLBACK_TO_APPLY_LISTEN_ACCEPT_CONFIG, LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT
-s -h served served echos hello LWS_SERVER_OPTION_FALLBACK_TO_APPLY_LISTEN_ACCEPT_CONFIG, LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT, LWS_SERVER_OPTION_ALLOW_HTTP_ON_HTTPS_LISTENER
-s -u redirected to https served echos hello LWS_SERVER_OPTION_FALLBACK_TO_APPLY_LISTEN_ACCEPT_CONFIG, LWS_SERVER_OPTION_ALLOW_NON_SSL_ON_SSL_PORT, LWS_SERVER_OPTION_REDIRECT_HTTP_TO_HTTPS