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libwebsockets/minimal-examples/ws-client/minimal-ws-client-ping
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Andy Green 0fb976837b tls certs: update warmcat.com and libwebsockets.org public certs 
Old certs were getting near the end of their life and we switched the
server to use letsencrypt.  The root and intermediate needed for the
mbedtls case changed accordingly
2019-09-22 03:08:36 -07:00
..
CMakeLists.txt clean: internally use LWS_WITH_CLIENT and _SERVER 2019-08-26 09:58:57 +01:00
libwebsockets.org.cer tls certs: update warmcat.com and libwebsockets.org public certs 2019-09-22 03:08:36 -07:00
minimal-ws-client-ping.c sul: all timed objects use a single pt sul list 2019-08-09 10:12:09 +01:00
README.md minimal-ws-client: fix couple of breakages 2018-12-17 19:09:13 +08:00

README.md

lws minimal ws client PING

This connects to libwebsockets.org using the lws-mirror-protocol.

It then sends a ws PING every 5s and records any PONG coming back.

build

 $ cmake . && make

Commandline Options

Option Meaning
-d Set logging verbosity
--server Use a specific server instead of libwebsockets.org, eg --server localhost. Implies LCCSCF_ALLOW_SELFSIGNED
--port Use a specific port instead of 443, eg --port 7681
-z Send zero-length pings for testing
--protocol Use a specific ws subprotocol rather than lws-mirror-protocol, eg, --protocol myprotocol

usage

Just run it, wait for the connect and then there will be PINGs sent at 5s intervals.

 $ ./lws-minimal-ws-client-ping
[2018/05/09 16:55:03:1160] USER: LWS minimal ws client PING
[2018/05/09 16:55:03:1379] NOTICE: Creating Vhost 'default' (serving disabled), 1 protocols, IPv6 off
[2018/05/09 16:55:03:1715] NOTICE: client loaded CA for verification ./libwebsockets.org.cer
[2018/05/09 16:55:03:1717] NOTICE: created client ssl context for default
[2018/05/09 16:55:04:8332] USER: callback_minimal_broker: established
[2018/05/09 16:55:09:8389] USER: Sending PING 10...
[2018/05/09 16:55:10:1491] USER: LWS_CALLBACK_CLIENT_RECEIVE_PONG
[2018/05/09 16:55:10:1494] NOTICE: 
[2018/05/09 16:55:10:1514] NOTICE: 0000: 70 69 6E 67 20 62 6F 64 79 21                      ping body!      
[2018/05/09 16:55:10:1515] NOTICE: 
...