We've seen an increase in number of socket hangups that are happening recently. Research suggests two routes, the max sockets increase and the newer knox has changes specifically addressing hangups.
Up our max sockets to try and mitigate the socket hang ups
Update knox for socket hangups
For reference on why I made these changes take a look at Automattic/knox#116. maxSockets is referenced as well as a displeasure at the agent in general. Reportedly the new knox version helped with the hangups.