mirror of
https://github.com/warmcat/libwebsockets.git
synced 2025-03-16 00:00:07 +01:00
06662a64fa
warmcat.com and libwebsockets.org use Let's Encrypt certificates... LE have changed their CA signing arrangements and after 2021-01-12 (the point I renewed the LE server certs and received one signed using the new arrangements) it's required to trust new root certs for the examples to connect to warmcat.com and libwebsockets.org. https://letsencrypt.org/2020/09/17/new-root-and-intermediates.html This updates the in-tree CA copies, the remote policies on warmcat.com have also been updated. Just goes to show for real client infrastructure, you need to run your own CA (that doesn't have to be trusted by anything outside the clients) where you can control the CA lifetime. |
||
|---|---|---|
| .. | ||
| CMakeLists.txt | ||
| libwebsockets.org.cer | ||
| minimal-ws-client.c | ||
| README.md | ||
lws minimal ws client
This connects to libwebsockets.org using the dumb-increment-protocol.
It demonstrates how to use the connection retry and backoff stuff in lws.
build
$ cmake . && make
Commandline Options
| Option | Meaning |
|---|---|
| -d | Set logging verbosity |
| -s | Use a specific server instead of libwebsockets.org, eg --server localhost. Implies LCCSCF_ALLOW_SELFSIGNED |
| -p | Use a specific port instead of 443, eg --port 7681 |
| -j | Allow selfsigned tls cert |
| -k | Allow insecure certs |
| -m | Skip server hostname check |
| -e | Allow expired certs |
| --protocol | Use a specific ws subprotocol rather than dumb-increment-protocol, eg, --protocol myprotocol |
usage
Just run it, it will connect to libwebsockets.org and spew incrementing numbers sent by the server at 20Hz
$ ./lws-minimal-ws-client
[2020/01/22 05:38:47:3409] U: LWS minimal ws client
[2020/01/22 05:38:47:4456] N: Loading client CA for verification ./libwebsockets.org.cer
[2020/01/22 05:38:48:1649] U: callback_minimal: established
[2020/01/22 05:38:48:1739] N:
[2020/01/22 05:38:48:1763] N: 0000: 30 0
[2020/01/22 05:38:48:1765] N:
...
To test against the lws test server instead of libwebsockets.org, run the test server as
$ libwebsockets-test-server -s
and run this test app with
$ ./lws-minimal-ws-client -s localhost -p 7681 -j
You can kill and restart the server to confirm the client connection is re- established if done within the backoff period.