Godeps/_workspace/src/gopkg.in/mgo.v2/session.go
func DialWithTimeout(url string, timeout time.Duration) (*Session, error) {
	info, err := ParseURL(url)
	if err != nil {
		return nil, err
	}
	info.Timeout = timeout
	return DialWithInfo(info)
}
func DialWithTimeout(url string, timeout time.Duration) (*Session, error) {
	info, err := ParseURL(url)
	if err != nil {
		return nil, err
	}
	info.Timeout = timeout
	return DialWithInfo(info)
}
// DialWithTimeout works like Dial, but uses timeout as the amount of time to
// wait for a server to respond when first connecting and also on follow up
// operations in the session. If timeout is zero, the call may block
// forever waiting for a connection to be made.
//
// See SetSyncTimeout for customizing the timeout for the session.