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libwebsockets/minimal-examples/raw/minimal-raw-netcat
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
..
CMakeLists.txt minimal-raw-netcat 2018-05-02 08:46:16 +08:00
minimal-raw-netcat.c cc0: align dedication to CC0 FAQ recommended format 2019-05-02 09:29:01 +01:00
README.md minimal-raw-netcat 2018-05-02 08:46:16 +08:00

lws minimal raw netcat

This example shows to to create a "netcat" that copies its stdin to a remote socket and prints what is returned in stdout.

It has some advantage over the real netcat, it will wait 1s after stdin closes to print results that are in flight.

build

 $ cmake . && make

usage

 $ echo -e -n "GET / http/1.1\r\n\r\n"| ./lws-minimal-raw-netcat
[2018/05/02 08:53:53:2665] USER: LWS minimal raw netcat [--server ip] [--port port]
[2018/05/02 08:53:53:2667] NOTICE: Creating Vhost 'default' (no listener), 1 protocols, IPv6 off
[2018/05/02 08:53:53:2703] USER: Starting connect...
[2018/05/02 08:53:53:5644] USER: Connected to libwebsockets.org:80...
[2018/05/02 08:53:53:5645] USER: LWS_CALLBACK_RAW_ADOPT
[2018/05/02 08:53:53:5645] USER: LWS_CALLBACK_RAW_ADOPT_FILE
[2018/05/02 08:53:53:5646] USER: LWS_CALLBACK_RAW_RX_FILE
[2018/05/02 08:53:53:5646] USER: LWS_CALLBACK_RAW_CLOSE_FILE
[2018/05/02 08:53:53:8600] USER: LWS_CALLBACK_RAW_RX (186)
HTTP/1.1 301 Redirect
server: lwsws
Strict-Transport-Security: max-age=15768000 ; includeSubDomains
location: https://libwebsockets.org
content-type: text/html
content-length: 0

Note the example does everything itself, after 5s idle the remote server closes the connection after which the example continues until you ^C it.