Is there a visual description of how the ktor client pipelin kotlinlang #ktor

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Title

r

ribesg

04/12/2019, 8:05 AM

Is there a visual description of how the ktor client pipelines connect each other, to better know which pipeline I should intercept?

For example, I would like to know what happens if I add an interceptor to the

HttpRequestPipeline.Send

phase. Would my interceptor run before or after the

HttpSendPipeline

? I mean, I know I can find that information from reading the source, but is there a more comprehensive documentation on how all of that works together?

d

Dennis Schröder

04/12/2019, 8:12 AM

Maybe that helps? https://ktor.io/advanced/pipeline.html

r

ribesg

04/12/2019, 8:16 AM

Yeah I read that, but I was wondering if I could do what I want without adding phases. I don’t know, I feel like adding a phase just to intercept it once is “overkill”.

d

Dennis Schröder

04/12/2019, 8:23 AM

Well I don't think you need your own phase. Just Intercept the

call pipeline phase

.

r

ribesg

04/12/2019, 8:28 AM

That still doesn’t tell me if such interceptor would be called before or after the pipeline

In the

HttpRequestPipeline

there’s this:``` /** * Phase for [HttpSend] feature */ val Send = PipelinePhase("Send")```

It doesn’t say how it works

d

Dennis Schröder

04/12/2019, 8:32 AM

Can't you just test it?

r

ribesg

04/12/2019, 8:33 AM

That would just be checking how it works right now, there’s no guarantee it’s not going to change.

As far as I understand, the move from

HttpRequestPipeline

to

HttpSendPipeline

is done with the

HttpSend

feature, which intercepts

HttpRequestPipeline.Send

.

If I add my own interceptor to

HttpRequestPipeline.Send

, I can’t know if it will be called before or after the one from

HttpSend

I think I’ll add phases.

:yes: 1

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