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tailcfg: add MapRequest.ReadOnly and OmitPeers; remove DebugForceDisco

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DebugForceDisco was a development & safety knob during the the transition
to discovery. It's no longer needed.

Add MapRequest.ReadOnly to prevent clients needing to do two
peer-spamming MapRequest at start-up.

This only adds the field, not the use of the field. (The control server
needs to support it first.)

Updates tailscale/corp#557

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2020-09-17 11:28:09 -07:00
committed by Brad Fitzpatrick
parent c41947903a
commit 904a91038a
2 changed files with 32 additions and 30 deletions
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18
tailcfg/tailcfg.go
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@@ -452,11 +452,19 @@ type MapRequest struct {
Stream bool // if true, multiple MapResponse objects are returned
Hostinfo *Hostinfo
// DebugForceDisco is a temporary flag during the deployment
// of magicsock active discovery. It says that that the client
// has environment variables explicitly turning discovery on,
// so control should not disable it.
DebugForceDisco bool `json:"debugForceDisco,omitempty"`
// ReadOnly is whether the client just wants to fetch the
// MapResponse, without updating their Endpoints. The
// Endpoints field will be ignored and LastSeen will not be
// updated and peers will not be notified of changes.
//
// The intended use if for clients to discover the DERP map at
// start-up before their first real endpoint update.
ReadOnly bool `json:",omitempty"`
// OmitPeers is whether the client is okay with the Peers list
// being omitted in the response. (For example, a client on
// start up using ReadOnly to get the DERP map.)
OmitPeers bool `json:",omitempty"`
}
// PortRange represents a range of UDP or TCP port numbers.