Updating observes from server? about coap-rs

[wuyingfengsui]

Have you try the example? I think it can be work just change the client method get to put

[sheosi]

It might be because client and server are in different threads in the example? I might have to try that.

[sheosi]

Gave it a try, using that same example and changing CoAPClient::get(url) with CoAPClient::put(url, vec![]) gives the same error as before.

[wuyingfengsui]

let response = CoAPClient::put(url, vec![]).unwrap(); works on my computer. Which OS you are using?

[sheosi]

Linux, Fedora 35. You think that might be the cause?

[wuyingfengsui]

Maybe. The error occur on a non-blocking socket. The linux has its' own non-blocking system. Have you try to start the client a little later?

[sheosi]

That was it, adding a barrier (a oneshot channel too, pretty much anything to sync them up) was enough for the example to work. I still think the underlying problem is not resolved, but maybe this could be added as a workaround? It would be useful to have this in an example, as part of the documentation or even inside the library itself (if it makes sense).

[wuyingfengsui]

It relates to the OS type. Only a few of OS has the problem. I will add some comments in the example later.

[sheosi]

Also, add that the thread is mandatory, otherwise it produces an error as well.

[Covertness]

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