If I have a `ktor-client` feature that has a `sendPipeline` and a `receivePipeline` intercept. How c...

# ktor

[fkrauthan]

If I have a ktor-client feature that has a sendPipeline and a receivePipeline intercept. How can I pass values from the sendPipeline intercept to the receivePipeline intercept (e.g. a class instance and/or some value)?

[Aleksei Tirman [JB]]

You can use Attributes (the documentation is for the server but the client uses the same interface) to pass a value among pipelines:

val keyForObject = AttributeKey<MyData>("")
client.sendPipeline.intercept(HttpSendPipeline.Before) {
    context.attributes.put(keyForObject, MyData())
}

client.receivePipeline.intercept(HttpReceivePipeline.State) {
    println(context.attributes[keyForObject])
}

[fkrauthan]

Ah cool perfect. And anything can be an attribute? Including class instances?

[Aleksei Tirman [JB]]

Yes.

[fkrauthan]

Cool thank you so much. I'll give it a try