correct handling of keep-alive

[mcollina]

correct handling of keep-alive

[adamvr]

Since this library is so low level, I've left this kind of plumbing in the hands of users (cf. mqtt-growl). It's super boilerplatey if you want to use the library for standard stuff though, you have to handle pingreq/resps, qos, and connection/connacks manually, so I'm currently hacking on a higher level api for it. Check back soon!

[adamvr]

It might also be worth noting that some brokers (I'm thinking of mosquitto in particular) add a grace period on top of the keepalive before the broker cuts the connection. This is why you might see in some places pingreq periods equal to the keepalive.

[mcollina]

I know I need to implement it on top of that, but it might be tricky for beginners.
An high level API will be awesome.