Function initDisplayNames

control/controlclient/direct.go:1450–1466

initDisplayNames mutates any tailcfg.Nodes in resp to populate their display names, calling InitDisplayNames on each. The magicDNSSuffix used is based on selfNode.

(selfNode tailcfg.NodeView, resp *tailcfg.MapResponse)

//
// The magicDNSSuffix used is based on selfNode.
func initDisplayNames(selfNode tailcfg.NodeView, resp *tailcfg.MapResponse) {
	if resp.Node == nil && len(resp.Peers) == 0 && len(resp.PeersChanged) == 0 {
		// Fast path for a common case (delta updates). No need to compute
		// magicDNSSuffix.
		return
	}
	magicDNSSuffix := netmap.MagicDNSSuffixOfNodeName(selfNode.Name())
	if resp.Node != nil {
		resp.Node.InitDisplayNames(magicDNSSuffix)
	}
	for _, n := range resp.Peers {
		n.InitDisplayNames(magicDNSSuffix)
	}
	for _, n := range resp.PeersChanged {
		n.InitDisplayNames(magicDNSSuffix)
	}
}

// decode JSON decodes the res.Body into v.
func decode(res *http.Response, v any) error {