Situation: Writing a CIDER middleware, trying to `transport/send` a response message via the standard bencode transport. The response message has a non-bencodable item outside of the :value slot.

Expected behavior: `transport/send` will bubble up the IllegalArgumentException thrown in c.t.n.bencode/write-bencode due to the non-bencodable item.

Actual behavior: `transport/send` silently fails and hangs. No response is sent over the wire (verified by monitoring communication going across nREPL's port). No exception is bubbled up to the CIDER middleware. Subsequent calls to nREPL (to evaluate code for example) do not return. Once an interrupt is sent, the subsequent calls do return correct values, but the non-bencodable response never appears.

I'm guessing there's some relationship to NREPL-30 (http://dev.clojure.org/jira/browse/NREPL-30)? Please see CIDER-nREPL issue #332 for further info as well. Let me know if there's anything I can do to debug this issue better.

Thanks for your help,
Sanjay