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Jordan Whited 685b853763 wgengine/magicsock: fix handling of derp.PeerGoneMessage (#10589) ... The switch in Conn.runDerpReader() on the derp.ReceivedMessage type contained cases other than derp.ReceivedPacket that fell through to writing to c.derpRecvCh, which should only be reached for derp.ReceivedPacket. This can result in the last/previous derp.ReceivedPacket to be re-handled, effectively creating a duplicate packet. If the last derp.ReceivedPacket happens to be a disco.CallMeMaybe it may result in a disco ping scan towards the originating peer on the endpoints contained. The change in this commit moves the channel write on c.derpRecvCh and subsequent select awaiting the result into the derp.ReceivedMessage case, preventing it from being reached from any other case. Explicit continue statements are also added to non-derp.ReceivedPacket cases where they were missing, in order to signal intent to the reader. Fixes #10586 Signed-off-by: Jordan Whited <jordan@tailscale.com>		7 months ago
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batching_conn.go	wgengine/magicsock: improve don't fragment bit set/get support	9 months ago
blockforever_conn.go	wgengine/magicsock: improve don't fragment bit set/get support	9 months ago
debughttp.go	wgengine/magicsock: stop retaining *netmap.NetworkMap	10 months ago
debugknobs.go	wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()	9 months ago
debugknobs_stubs.go	wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()	9 months ago
derp.go	wgengine/magicsock: fix handling of derp.PeerGoneMessage (#10589)	7 months ago
discopingpurpose_string.go	all: update copyright and license headers	1 year ago
endpoint.go	wgengine/magicsock: move trustBestAddrUntil forward on non-disco rx (#10274)	8 months ago
endpoint_default.go	all: adjust some build tags for plan9	10 months ago
endpoint_stub.go	all: adjust some build tags for plan9	10 months ago
endpoint_tracker.go	wgengine/magicsock: only cache N most recent endpoints per-Addr	11 months ago
endpoint_tracker_test.go	wgengine/magicsock: only cache N most recent endpoints per-Addr	11 months ago
magicsock.go	net/netcheck: use DERP frames as a signal for home region liveness	7 months ago
magicsock_default.go	wgengine/magicsock: delete unused stuff	11 months ago
magicsock_linux.go	wgengine/magicsock: simplify tryEnableUDPOffload() (#9872)	8 months ago
magicsock_test.go	cmd/tailscaled,net/tstun: fix data race on start-up in TUN mode	9 months ago
magicsock_unix_test.go	all: update copyright and license headers	1 year ago
peermap.go	wgengine/magicsock: make peerMap also keyed by NodeID	10 months ago
peermtu.go	disco,net/tstun,wgengine/magicsock: probe peer MTU	9 months ago
peermtu_darwin.go	wgengine/magicsock: improve don't fragment bit set/get support	9 months ago
peermtu_linux.go	wgengine/magicsock: improve don't fragment bit set/get support	9 months ago
peermtu_stubs.go	wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()	9 months ago
peermtu_unix.go	wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()	9 months ago
rebinding_conn.go	wgengine/magicsock: improve don't fragment bit set/get support	9 months ago