Checking whether the underlying client and context have a context and setting one on the context if no timeout set in either

set_timeout.go

	// Set a timeout of 10secs if no timeout in the underlying
	// http client and no timeout set in the context.
	_, ok := ctx.Deadline()
	if c.c.Timeout == 0 && !ok {
		var cancel context.CancelFunc
		ctx, cancel = context.WithTimeout(ctx, time.Second*10)
		defer cancel()
	}