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wgengine/magicsock: add debug envknob for injecting an endpoint

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For testing. Lee wants to play with 'AWS Global Accelerator Custom
Routing with Amazon Elastic Kubernetes Service'. If this works well
enough, we can promote it.

Updates #12578

Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-07-08 07:21:21 -07:00
committed by Brad Fitzpatrick
parent d2fef01206
commit 42dac7c5c2
4 changed files with 34 additions and 1 deletions
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6
wgengine/magicsock/magicsock.go
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@@ -919,6 +919,12 @@ func (c *Conn) determineEndpoints(ctx context.Context) ([]tailcfg.Endpoint, erro
}
}
// Temporarily (2024-07-08) during investigations, allow setting
// a pretend endpoint for testing NAT traversal scenarios.
// TODO(bradfitz): probably promote this to the config file.
// https://github.com/tailscale/tailscale/issues/12578
addAddr(pretendpoint(), tailcfg.EndpointExplicitConf)
// Update our set of endpoints by adding any endpoints that we
// previously found but haven't expired yet. This also updates the
// cache with the set of endpoints discovered in this function.