Brad Fitzpatrick
484b7fc9a3
derp, cmd/derper: add frameWatchConns, framePeerPresent for inter-DERP routing
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This lets a trusted DERP client that knows a pre-shared key subscribe
to the connection list. Upon subscribing, they get the current set
of connected public keys, and then all changes over time.
This lets a set of DERP server peers within a region all stay connected to
each other and know which clients are connected to which nodes.
Updates #388
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-06-03 08:03:29 -07:00
Dmitry Adamushko
806645ea0e
derp: prevent readFrame() from reading more than len(b) bytes.
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Signed-off-by: Dmitry Adamushko <da@stablebits.net>
2020-04-10 08:56:23 -07:00
Brad Fitzpatrick
1ab5b31c4b
derp, magicsock: send new "peer gone" frames when previous sender disconnects
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Updates #150 (not yet enabled by default in magicsock)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-03-22 21:00:47 -07:00
Brad Fitzpatrick
6978b93bdd
derp, magicsock: track home (preferred) vs visiting connections for stats
2020-03-05 15:00:56 -08:00
Brad Fitzpatrick
bf704a5218
derp: protocol negotiation, add v2: send src pub keys to clients in packets
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-03-04 09:55:13 -08:00
Brad Fitzpatrick
379a3125fd
derp, wgengine/magicsock: support more than just packets from Client.Recv
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-20 22:08:13 -08:00
Brad Fitzpatrick
88f1cc0c98
derp, cmd/derper: add rate limiting support, add default 5Mbps limit
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-20 15:26:30 -08:00
Brad Fitzpatrick
f029c4c82d
derp: change the protocol framing to always include a length
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Addresses one of crawshaw's TODOs.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-20 13:37:44 -08:00
Brad Fitzpatrick
11048b8932
derp: add docs on current protocol overview, break accept apart a bit
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Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-20 09:57:05 -08:00
Brad Fitzpatrick
259406e797
derp: move away from [32]byte key types
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And some minor cleanup in the process.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-02-17 14:18:09 -08:00
