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@ -29,7 +29,8 @@ import (
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// single monotonically increasing integer, rather than the relatively
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// complex x.y.z-xxxxx semver+hash(es). Whenever the client gains a
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// capability or wants to negotiate a change in semantics with the
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// server (control plane), bump this number and document what's new.
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// server (control plane), peers (over PeerAPI), or frontend (over
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// LocalAPI), bump this number and document what's new.
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//
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// Previously (prior to 2022-03-06), it was known as the "MapRequest
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// version" or "mapVer" or "map cap" and that name and usage persists
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@ -90,7 +91,8 @@ type CapabilityVersion int
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// - 51: 2022-11-30: Client understands CapabilityTailnetLockAlpha
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// - 52: 2023-01-05: client can handle c2n POST /logtail/flush
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// - 53: 2023-01-18: client respects explicit Node.Expired + auto-sets based on Node.KeyExpiry
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const CurrentCapabilityVersion CapabilityVersion = 53
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// - 54: 2023-01-19: Node.Cap added, PeersChangedPatch.Cap, uses Node.Cap for ExitDNS before Hostinfo.Services fallback
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const CurrentCapabilityVersion CapabilityVersion = 54
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type StableID string
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@ -199,6 +201,7 @@ type Node struct {
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DERP string `json:",omitempty"` // DERP-in-IP:port ("127.3.3.40:N") endpoint
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Hostinfo HostinfoView
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Created time.Time
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Cap CapabilityVersion `json:",omitempty"` // if non-zero, the node's capability version; old servers might not send
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// Tags are the list of ACL tags applied to this node.
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// Tags take the form of `tag:<value>` where value starts
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@ -1627,6 +1630,7 @@ func (n *Node) Equal(n2 *Node) bool {
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eqCIDRs(n.PrimaryRoutes, n2.PrimaryRoutes) &&
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eqStrings(n.Endpoints, n2.Endpoints) &&
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n.DERP == n2.DERP &&
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n.Cap == n2.Cap &&
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n.Hostinfo.Equal(n2.Hostinfo) &&
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n.Created.Equal(n2.Created) &&
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eqTimePtr(n.LastSeen, n2.LastSeen) &&
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@ -2001,6 +2005,9 @@ type PeerChange struct {
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// region ID is now this number.
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DERPRegion int `json:",omitempty"`
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// Cap, if non-zero, means that NodeID's capability version has changed.
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Cap CapabilityVersion `json:",omitempty"`
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// Endpoints, if non-empty, means that NodeID's UDP Endpoints
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// have changed to these.
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Endpoints []string `json:",omitempty"`
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