513[ApplicationError] Message: Destination '' does not support REQUEST_STREAM about rsocket-kotlin HOT 5 CLOSED

Hey, looks like you just build empty metadata in request.
It should be:

metadata(RoutingMetadata("subscribe.user"))

instead of:

metadata {
  RoutingMetadata("subscribe.user")
}

when building payload via buildPayload

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Hey @olme04 Thank you for answer
I've checked this way also and having another error

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I see, that you are using composite metadata in setup payload, so looks like your server only supports it.
So you should also use composite metadata (same as you used in setup payload) for requests:

buildPayload {
  compositeMetadata {
    add(RoutingMetadata("subscribe.user"))
  }
  data(ByteReadPacket.Empty)
}

Also, it will be better to change metadata mime type in setup payload to composite metadata:

payloadMimeType = PayloadMimeType(
  data = WellKnownMimeType.ApplicationOctetStream,
  metadata = WellKnownMimeType.MessageRSocketCompositeMetadata
)

I don't now about your server implementation, but this can also affect how it will decode metadata.
In this case, you should also use compositeMetadata builder in all future requests.

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Finally! Thank you
So problem was in wrong mime type for metadata

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I'm glad that I could help you!

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