return err
	}

	// Fill in the scheme if not set, using the port information.
	if err := o.fillScheme(); err != nil {
		return err
	}

	// Fill in HTTP headers
	o.fillHeaders()

	if o.Timeout <= 0 {
		o.Timeout = common.DefaultRequestTimeout
	}

	// Fill the number of calls to make.
	o.fillCallCount()

	// Fill connection parameters based on scheme and workload type.

of the MIME data it processes.

[Reader.NextPart] and [Reader.NextRawPart] limit the number of headers in a
part to 10000 and [Reader.ReadForm] limits the total number of headers in all
FileHeaders to 10000.
These limits may be adjusted with the GODEBUG=multipartmaxheaders=<values>
setting.

Reader.ReadForm further limits the number of parts in a form to 1000.

func reportLabels(rpt *Report, g *graph.Graph, origCount, droppedNodes, droppedEdges int, fullHeaders bool) []string {
	nodeFraction := rpt.options.NodeFraction
	edgeFraction := rpt.options.EdgeFraction
	nodeCount := len(g.Nodes)

	var label []string
	if len(rpt.options.ProfileLabels) > 0 {
		label = append(label, rpt.options.ProfileLabels...)
	} else if fullHeaders || !rpt.options.CompactLabels {
		label = ProfileLabels(rpt)
	}