[zeromq-dev] Integrating ZeroMQ into existing systems?

[Steven Clark]

Forgive me a simple/stupid question here-

To make use of ZeroMQ, do both ends of a simple network connection
need to be programmed with ZeroMQ, or can one endpoint use ZeroMQ and
the other use low-level (Berkeley-style) sockets?

I have a situation where a device (microcontroller-based) connects
periodically to a TCP server, sends/recvs some data, and disconnects.
The server sends some filtered form of the data to other network
endpoints. Currently everything is written using low-level sockets.
I'd like to switch the server to use ZeroMQ so I can take advantage of
Publisher/Subscriber sockets, etc for the distribution of data from
the server. Should/can I make the link between the device and the
server use ZeroMQ, given that I can't exactly port ZeroMQ to run on
the microcontroller platform?

In the event that I can use it for the device connection, is the PAIR
topology the correct one to use? What happens if the device doesn't
shut down the connection cleanly (which happens fairly often)? Is
there any danger of getting stuck in a FIN_WAIT state?

-Steven