PingContext not cancel when ctx deadline

[zjmnssy]

Issue description

when i specially use a unavailable mysql server address to test PingContext, PingContext not cancel when ctx deadline, and every time it will cost 21 seconds when return error of " dial tcp 192.168.31.123:3306: connect: connection refused", but it should return error of "context canceled" after my ctx timeout.

Example code

ctx, cancel := context.WithTimeout(context.Background(), time.Duration(3)*time.Second)
defer cancel()

err = db.PingContext(ctx)
if err != nil {
    return
}

[methane]

Have you tried master branch?

[zjmnssy]

Have you tried master branch?

this is my go mod file, i found PingContext func is in go/src/database/sql/sql.go ， it maybe not because of go-sql-driver problem ?

[methane]

#823 implements Ping but it is not included in 1.4 series and v1.5 is not released yet.
So you need to try master branch, instead of latest release.

[zjmnssy]

#823 implements Ping but it is not included in 1.4 series and v1.5 is not released yet.
So you need to try master branch, instead of latest release.

ok， I will try.

[zjmnssy]

#823 implements Ping but it is not included in 1.4 series and v1.5 is not released yet.
So you need to try master branch, instead of latest release.

ok， I will try.

yes，when use master, the problem not exist, thank you!