What to do when "Socket temporarily available"

[rgbkrk]

Context: I'm running a ZeroMQ Dealer and sending a message that the Router (written with pyzmq) can't consume. When the dealer does a receive, I get this error:

{ Error: Socket temporarily unavailable
    at Session.sendOnControl (/Users/kylek/code/src/github.com/rgbkrk/zeromq-new-for-nteract/session.js:50:49)
    at process._tickCallback (internal/process/next_tick.js:68:7) errno: 35, code: 'EAGAIN' }

My understanding is that the socket is timing out. I can code around this, but I'm curious if I should be looking at this differently.