## require socket to be configured (and connected?) by socket creator

[brianc]

require socket to be configured (and connected?) by socket creator

I’ll try to get around to expanding on this later, but in short:

• new config option socketOptions: {keepAlive, keepAliveInitialDelay [sic], …}
• default socket is new net.Socket({noDelay: true, ...socketOptions}).connect(…)
• if socket is passed, no further initialization

(see compatibility issues with Cloudflare sockets, for one; this single change might be enough to allow generic stream to be passed as socket?)

Originally posted by @charmander in #3598 (comment)