Add keep-alive timeout parameter

[benaadams]

[muratg]

Yeah, I think we should do this.

cc @lodejard

[muratg]

@benaadams It looks like you're working on this. Looking forward to see the PR!

[cesarblum]

@benaadams Are you working on this? I guess not since it's been 21 days since @muratg's comment 😄 I'll take this if no one's working on it.

[benaadams]

@CesarBS I was quite close with #485 though it needs rebasing; I can finish it of with improves if you can workout #569? Haven't managed to work out what's going on there.

On our priorities, we do need the keep-alive for our production use, so will move onto this now.

[cesarblum]

@benaadams I can't look into #569 immediately, so go ahead with #485 as it is right now.

[DamianEdwards]

post RC2