Is it possible to enable GZIP compression for the websocket?

[tortmayr]

Discussed in #1236

^{Originally posted by dmm9 February 2, 2024}
I was testing some diagram with a large EMF model. The displayed model consists of 3000+ top-level nodes (i.e. 3000 GNodes direct children of the root), with their corresponding sub-elements (compartments, nodes, labels) and GEdges. When analyzing the network traffic in the browser, it seems the JSON packet for the model is about 7-8 MB size.

The network transfer is one factor delaying the display of the model. I was wondering if there is any option to enable gzip compression on the websocket of the glsp server. A quick search in google points to a compression rate of ~95% for JSON with gzip.