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f9f6bb66fe
Refactor everything around ping / pong handling in ws and h2, so there is instead a protocol-independent validity lws_sul tracking how long it has been since the last exchange that confirms the operation of the network connection in both directions. Clean out periodic role callback and replace the last two role users with discrete lws_sul for each pt.
1.5 KiB
1.5 KiB
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 |
| -v | Connection validity use 3s / 10s instead of default 5m / 5m10s |
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:
...