all: use strs.CutPrefix and strs.CutSuffix more

Updates places where we use HasPrefix + TrimPrefix to use the combined
function.

Updates #5309

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
This commit is contained in:
Mihai Parparita
2022-11-18 10:13:14 -08:00
committed by Mihai Parparita
parent 41e1d336cc
commit 33520920c3
14 changed files with 46 additions and 34 deletions

View File

@@ -78,7 +78,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/util/lineread from tailscale.com/hostinfo+
tailscale.com/util/mak from tailscale.com/syncs
tailscale.com/util/singleflight from tailscale.com/net/dnscache
L tailscale.com/util/strs from tailscale.com/hostinfo
tailscale.com/util/strs from tailscale.com/hostinfo+
W 💣 tailscale.com/util/winutil from tailscale.com/hostinfo+
tailscale.com/version from tailscale.com/derp+
tailscale.com/version/distro from tailscale.com/hostinfo+

View File

@@ -17,6 +17,7 @@ import (
"tailscale.com/derp/derphttp"
"tailscale.com/types/key"
"tailscale.com/types/logger"
"tailscale.com/util/strs"
)
func startMesh(s *derp.Server) error {
@@ -50,8 +51,7 @@ func startMeshWithHost(s *derp.Server, host string) error {
}
var d net.Dialer
var r net.Resolver
if port == "443" && strings.HasSuffix(host, ".tailscale.com") {
base := strings.TrimSuffix(host, ".tailscale.com")
if base, ok := strs.CutSuffix(host, ".tailscale.com"); ok && port == "443" {
subCtx, cancel := context.WithTimeout(ctx, 2*time.Second)
defer cancel()
vpcHost := base + "-vpc.tailscale.com"