I understand the (delayed) datafeed on port 7879 is similar to the port 30003 output of SBS-1, i.e. it is sending out messages as they were received, but the stream is formatted in XML? Or is this a clocked dump of database data, i.e. not as the messages are received, but let's say a complete dump of all flight data every x seconds?
I have serious doubts that this an efficient way of coding the data. In the London TMA there are up to 2-300 flights transmitting at the same time and XML tags would represent a huge overhead for the data stream. Indeed, for me XML is the most unefficient formatting tool for streaming data.
Any comments?
Is there a data format description available for the XML feed?
Can that be made available here?
Thank you for clarification