I set up a pipeline of streams connecting to each other like A -> B -> C

put! a value to A derefs to true, but can't take the value from B uisng try-take!. It timeouts.

It confirmed that B is downstream of A. and a quick REPL version works

but not in the app. Anyidea how to debug it ?

i can't even put! and then take! from A itself ?

Sounds like you have a type mismatch

Put! Itself needs to return a boolean but also stick an object into the next stream

Well, a deferred boolean, that is

yeah the weird part is the it derefs to true

That's so you can determine whether the connecting function succeeded in the put or not

it's now 13 days which I'm trying to figure this out

The return value of the put! Is not the object itself

I see, I mean by derefing to true it means that it successfully put the value into stream. right ?

Yes

It's a little weird

I even tried to walk the pipeline using downstream function to confirm the connections,