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Peers: optional latency check with per-peer setting

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The server pings a peer's tunnel address every 30 s and shows the median
of the last 5 minutes in the peer list (with a 1-hour sparkline) and a
24-hour chart on the peer page. Off by default; "active" pings only
while the device sends traffic, "always" keeps the tunnel up.
This commit is contained in:
Daniel Redetzke
2026-10-04 14:28:44 +03:00
parent b0be0b0ceb
commit 7391aac429
14 changed files with 737 additions and 33 deletions
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config.go
+16 -10
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@@ -106,16 +106,19 @@ type ClientDefaults struct {
// Peer is one client. Its private key is never stored: it is shown once when
// the config is issued.
type Peer struct {
ID string `json:"id"`
Name string `json:"name"`
Note string `json:"note"`
Enabled bool `json:"enabled"`
PublicKey string `json:"publicKey"`
PresharedKey string `json:"presharedKey,omitempty"`
IPv4 string `json:"ipv4"`
DNS []string `json:"dns,omitempty"` // nil = server default
AllowedIPs []string `json:"allowedIPs,omitempty"` // nil = server default
Keepalive *int `json:"keepalive,omitempty"` // nil = server default
ID string `json:"id"`
Name string `json:"name"`
Note string `json:"note"`
Enabled bool `json:"enabled"`
PublicKey string `json:"publicKey"`
PresharedKey string `json:"presharedKey,omitempty"`
IPv4 string `json:"ipv4"`
DNS []string `json:"dns,omitempty"` // nil = server default
AllowedIPs []string `json:"allowedIPs,omitempty"` // nil = server default
Keepalive *int `json:"keepalive,omitempty"` // nil = server default
// LatencyCheck says when the server pings the peer through the tunnel:
// "" (off), "active" (while the device sends traffic) or "always".
LatencyCheck string `json:"latencyCheck,omitempty"`
Created time.Time `json:"created"`
ConfigIssued *time.Time `json:"configIssued,omitempty"`
// Setup is a pending one-time setup link. A peer created with a link has
@@ -366,6 +369,9 @@ func (c *Config) validate() error {
if p.Keepalive != nil && (*p.Keepalive < 0 || *p.Keepalive > 3600) {
return fmt.Errorf("peer %q: keepalive must be 0–3600 seconds", p.Name)
}
if !validLatencyCheck(p.LatencyCheck) {
return fmt.Errorf("peer %q: latency check must be off, active or always", p.Name)
}
}
return nil
}