device.Tracker.RunSSDP calls net.ResolveUDPAddr

dns.Listener.Run calls net.ListenPacket

dns.Listener.Run calls net.Listen

dns.Listener.handleQuery calls dns.Client.Exchange, which eventually calls net.Dialer.DialContext

web.Server.renderPage calls template.Template.ExecuteTemplate

web.Server.renderPage calls template.Template.ExecuteTemplate

umberrelay.main calls fmt.Println, which eventually calls x509.HostnameError.Error

web.Server.ListenAndServe calls http.Server.ListenAndServe, which eventually calls x509.Certificate.VerifyHostname

web.Server.ListenAndServe calls http.Server.ListenAndServe, which eventually calls x509.Certificate.Verify

device.Tracker.parseSSDP calls http.ReadRequest, which eventually calls textproto.Reader.ReadMIMEHeader

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5, actions/checkout@v4.1.1, actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff, actions/setup-go@v5.0.0. Actions will be forced to run with Node.js 24 by default starting June 16th, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/