[zeromq-dev] Publish / Subscribe vs Multicast

[Brian Granger]

Martin,

> Anyway, the principle holds. Use ZMQ_UPSTREAM socket to get messages
> from the previous object, use ZMQ_DOWNSTREAM to send them further on.

I think the docs for ZMQ_UPSTREAM and ZMQ_DOWNSTREAM may have a typo
that is confusing:

For *both* ZMQ_UPSTREAM and ZMQ_DOWNSTREAM say that

"Send function is not implemented for this socket type."

Doesn't one of these need to have recv?

Cheers,

Brian

Socket to receive messages from up the stream. Messages are
fair-queued from among all the connected peers. Send function is not
implemented for this socket type.

Compatible peer sockets: ZMQ_DOWNSTREAM.

ZMQ_DOWNSTREAM

Socket to send messages down stream. Messages are load-balanced among
all the connected peers. Send function is not implemented for this
socket type.

Compatible peer sockets: ZMQ_UPSTREAM.


-- 
Brian E. Granger, Ph.D.
Assistant Professor of Physics
Cal Poly State University, San Luis Obispo
bgranger at calpoly.edu
ellisonbg at gmail.com