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libwebsockets/minimal-examples/raw/minimal-raw-netcat
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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
minimal-raw-netcat.c type comparisons: fixes 2021-01-05 10:56:38 +00:00
README.md minimal-raw-netcat 2018-05-02 08:46:16 +08:00

README.md

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.