PingContext only times out after a second

[kaihendry]

Issue description

Fails to time out after two seconds, however does after one second.
https://media.dev.unee-t.com/2018-09-05/pingcontext.mp4

Example code

https://media.dev.unee-t.com/2018-09-05/main.go

Configuration

99ff426

go version go1.11 linux/amd64

5.7.12-log MySQL Community Server (GPL) which is actually AWS Aurora

Archlinux

This might be related: https://stackoverflow.com/a/52178849/4534

[methane]

#705 or #778 may solve it.

[kardianos]

Yes, either #705 or #778 should solve this. This will allow passing though the context (with correct tmeout) to the initial dial function. In this case no connections have been established from the pool until PingContext is called, thus it is dialing initially.

[methane]

Fixed by #941