Hello everyone. I'm implementing a debug view in my app and i need to intercept all the Http respons...

# ktor

[Lucca Beurmann]

Hello everyone. I'm implementing a debug view in my app and i need to intercept all the Http responses to list them in this view. The information i want to save are: status code, headers, timestamp and the response body (as plain text), how could i do this?

[SOLVED ✅ ]

[Lucca Beurmann]

I tried using this responseValidator inside my HttpResponseValidator but whenever i try to use response.body a json serialization error is thrown

[Lucca Beurmann]

Update: I moved this listener implementation to the ResponseObserver plugin but the problem remains

[Lucca Beurmann]

image.png

[Lucca Beurmann]

Nevermind, bodyAsText is working as expected when used inside ResponseObserver

[Sylvain Bécuwe]

Hello, the problem with ‘ResponseObserver’ is that it only treats response. I’m trying to install a plug-in that reads both request and response for logging purpose, such as Zalando’logbook-ktor-client plugin.
However it seems really tricky to read request/réponse inside custom plugin and the only way I found was to use the ‘split’ method from the unmodified ‘content’ in the ‘HttpResponse’ object.
The problem with that too is that ‘content’ is an internal API..
So what is the official way to read bodies inside custom plugin? The official documentation only mention headers, etc.. but not body.

[Lucca Beurmann]

Good to know

[Lucca Beurmann]

But my use case only requires response level logs

[Sylvain Bécuwe]

Yep I will probably open a thread about this on Monday

[Lucca Beurmann]

Hey, I'm pretty sure it's possible to read the request using the Response Observer

[Lucca Beurmann]

The OnResponse callback provides an instance of HttpResponse , and this class has a member named request

[Lucca Beurmann]

Isn't this what you looking for?

[Sylvain Bécuwe]

Hmm interesting. But is the observer called if you don’t receive the response ? (When it times out for example)

[Sylvain Bécuwe]

Also an inconvenient I can see is that the log timestamps will be the same for both request and response unless there’s a way to retrieve the request’s call timestamp

[Lucca Beurmann]

I believe time outs are handled by ktor with internal exceptions so it shouldn't be a problema