cmd/strelaysrv: Increase default strelaysrv network buffer size (fixes #7514) (#7517)
cmd/strelaysrv: Increase default strelaysrv network buffer size (fixes #7514) (#7517)

Increases throughput at the cost of more memory per connection

syncthing/syncthing,wweich/syncthing,wweich/syncthing,syncthing/syncthing,syncthing/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing,wweich/syncthing,syncthing/syncthing