# ZMQ stream

Images from a simple ZMQ server, e.g. lavuezmqstreamfromtango SERVER. It is used to send `post-processed images`

The ZMQ Stream image source frame contains the following fields:

- ZMQ Server: selects the zmq server host and zmq data port. Moreover the user can also select
  the required zmq topic and ZMQ HWM (how many images is in buffer), i.e. host:port[/topic[/HWM]]
- DataSource: name of zmq topic. Possible datasources can be predefined in the configuration or sent in ZMQ metadata.
- Status: shows the connection status. It also displays a port of ZMQ security stream if it is enabled.
- Start/Stop button to launch or interrupt image querying

The ZMQ Stream metadata part can also contain other informations like axes labels or axes start position and scale.