I've a hard time getting started with libwebsockets

[ju-emb]

Sorry, that's not an issue to libwebsockets, but to me.

libwebsockets is very well thought and made. Congrats and thanks for that.

3 days I'm browsing examples, compile run and try them ...
Since I'm new to websockets I got a far understanding of it.

The issue I have is, get started writing a server that responds to an existing client.
The client app is artisan-scope sending some JSON requests and expecting an answer.

I tried to use the echo server example to get connected to the client and hoped I can see what the client is sending.
I got connected, but I'm to stupid to filter out the data coming from the client.

any hint's how I can do that.

Since libwebsockets does a lot in the background and uses mostly it's own types for variables and functions, I've no clue how to get to see what I want to see.

My understanding so far is, I have to implement the protocol the client comes with.
I have to get the data he send, and I have to respond the requests.

Now I need to see:
What protocol the client comes with. So I can implement that protocol
Need to extract the JSON data he send in order to respond to them.

Now my question
What's the "libwebsocket-way" to do that

thanks for your patience
Ju

[lws-team]

This is doing things in http or ws? I presume it is ws but you don't actually say.

It sounds like you just want to look at https://github.com/warmcat/libwebsockets/tree/main/minimal-examples-lowlevel/ws-server/minimal-ws-server

Modify https://github.com/warmcat/libwebsockets/blob/main/minimal-examples-lowlevel/ws-server/minimal-ws-server/protocol_lws_minimal.c to match what your existing client will connect to including the ws protocol name.

Modify LWS_CALLBACK_RECEIVE in the protocol to dump what it is sending, what to do about the protocol sending depends on the required rules for the protocol of when to send stuff.

[ju-emb]

Hi Andy,

sorry for late answering, and thanks for the pointer.
I had to ventilate my brain a bit after digging through all that code.
I'll have a look at that examples and follow your suggestion.

again thanks and keep up with the great work

ju