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Revision as of 15:15, 26 March 2020 by Duggabe (talk | contribs) (add note about IP addresses)
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Sink the contents of a stream to a ZMQ PUSH socket.

This block acts a a streaming sink for a GNU Radio flowgraph and writes its contents to a ZMQ PUSH socket. A PUSH socket will round-robin send its messages to each connected ZMQ PULL socket, either another gr-zeromq source block or a regular, non-GNU Radio ZMQ socket.


(R): Run-time adjustable

ZMQ socket address specifier. The format of the address is tcp://*:port where * should be for localhost.
Note: If the Source and Sink blocks are on two different computers on the same LAN, then the IP and port number of the Sink block must be specified on each end of that connection. For example, if the Sink is on IP and the Source is on IP, both Source and Sink blocks must specify the Sink IP and port (
Receive timeout in milliseconds, default is 100ms.
Pass Tags
Whether sink will serialize and pass tags over the link.
High Watermark
High Watermark to configure the socket to (-1 => zmq's default)

Example Flowgraph

Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.

Source Files

C++ files
Header files
Public header files
Block definition