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chore(vpn/tunnel): sort outgoing fqdns by length #16520

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Feb 11, 2025
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chore(vpn/tunnel): sort outgoing fqdns by length #16520

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chore(vpn/tunnel): sort outgoing fqdns by length
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@ethanndickson
ethanndickson committed Feb 11, 2025
commit 1867c3b2b82b2cb865f3724e37eb34ebe9e146f9
7 changes: 7 additions & 0 deletions vpn/tunnel.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ import (
"net/netip"
"net/url"
"reflect"
"sort"
"strconv"
"sync"
"time"
Expand Down Expand Up @@ -402,6 +403,9 @@ func (u *updater) createPeerUpdateLocked(update tailnet.WorkspaceUpdate) *PeerUp
for name := range agent.Hosts {
fqdn = append(fqdn, name.WithTrailingDot())
}
sort.Slice(fqdn, func(i, j int) bool {
return len(fqdn[i]) < len(fqdn[j])
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Wouldn't a better sort be by the amount of periods?

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Not necessarily? If we have:

dev.wsname.ethan.coder
dev.wsname.me.coder

I'd want the latter to be shown. I guess we could do number of periods AND length?

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Actually, I don't think it's worth doing that. We want the shortest name because that's what looks the best in the UI. With all the hostnames we set currently, the shortest name is always going to have the least periods. If we ever change that, we can revisit this.

})
out.DeletedAgents[i] = &Agent{
Id: tailnet.UUIDToByteSlice(agent.ID),
Name: agent.Name,
Expand All @@ -424,6 +428,9 @@ func (u *updater) convertAgentsLocked(agents []*tailnet.Agent) []*Agent {
for name := range agent.Hosts {
fqdn = append(fqdn, name.WithTrailingDot())
}
sort.Slice(fqdn, func(i, j int) bool {
return len(fqdn[i]) < len(fqdn[j])
})
protoAgent := &Agent{
Id: tailnet.UUIDToByteSlice(agent.ID),
Name: agent.Name,
Expand Down
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