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tsnet: add CertDomains helper (#7533)

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Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali 2023-03-11 13:12:57 -08:00 committed by GitHub
parent e109cf9fdd
commit 958c89470b
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2 changed files with 18 additions and 0 deletions
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2
tsnet/example/tsnet-funnel/tsnet-funnel.go
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@ -34,6 +34,8 @@ func main() {
} }
defer ln.Close() defer ln.Close()
fmt.Printf("Listening on https://%v\n", s.CertDomains()[0])
err = http.Serve(ln, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { err = http.Serve(ln, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, "<html><body><h1>Hello, internet!</h1>") fmt.Fprintln(w, "<html><body><h1>Hello, internet!</h1>")
})) }))

16
tsnet/tsnet.go
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@ -26,6 +26,7 @@ import (
"sync" "sync"
"time" "time"
"golang.org/x/exp/slices"
"tailscale.com/client/tailscale" "tailscale.com/client/tailscale"
"tailscale.com/control/controlclient" "tailscale.com/control/controlclient"
"tailscale.com/envknob" "tailscale.com/envknob"
@ -366,11 +367,26 @@ func (s *Server) doInit() {
} }
} }
// CertDomains returns the list of domains for which the server can
// provide TLS certificates. These are also the DNS names for the
// Server.
// If the server is not running, it returns nil.
func (s *Server) CertDomains() []string {
nm := s.lb.NetMap()
if nm == nil {
return nil
}
return slices.Clone(nm.DNS.CertDomains)
}
// TailscaleIPs returns IPv4 and IPv6 addresses for this node. If the node // TailscaleIPs returns IPv4 and IPv6 addresses for this node. If the node
// has not yet joined a tailnet or is otherwise unaware of its own IP addresses, // has not yet joined a tailnet or is otherwise unaware of its own IP addresses,
// the returned ip4, ip6 will be !netip.IsValid(). // the returned ip4, ip6 will be !netip.IsValid().
func (s *Server) TailscaleIPs() (ip4, ip6 netip.Addr) { func (s *Server) TailscaleIPs() (ip4, ip6 netip.Addr) {
nm := s.lb.NetMap() nm := s.lb.NetMap()
if nm == nil {
return
}
for _, addr := range nm.Addresses { for _, addr := range nm.Addresses {
ip := addr.Addr() ip := addr.Addr()
if ip.Is6() { if ip.Is6() {