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tailscale/cmd/tailscaled
Josh Bleecher Snyder b3ceca1dd7 wgengine/...: split into multiple receive functions
Upstream wireguard-go has changed its receive model.
NewDevice now accepts a conn.Bind interface.

The conn.Bind is stateless; magicsock.Conns are stateful.
To work around this, we add a connBind type that supports
cheap teardown and bring-up, backed by a Conn.

The new conn.Bind allows us to specify a set of receive functions,
rather than having to shoehorn everything into ReceiveIPv4 and ReceiveIPv6.
This lets us plumbing DERP messages directly into wireguard-go,
instead of having to mux them via ReceiveIPv4.

One consequence of the new conn.Bind layer is that
closing the wireguard-go device is now indistinguishable
from the routine bring-up and tear-down normally experienced
by a conn.Bind. We thus have to explicitly close the magicsock.Conn
when the close the wireguard-go device.

One downside of this change is that we are reliant on wireguard-go
to call receiveDERP to process DERP messages. This is fine for now,
but is perhaps something we should fix in the future.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
4 years ago
..
debug.go Revert "cmd/tailscaled: split package main into main shim + package" 4 years ago
depaware.txt wgengine/...: split into multiple receive functions 4 years ago
install_darwin.go cmd/tailscaled: remove tailscaled binary on uninstall-system-daemon 4 years ago
tailscaled.defaults cmd/tailscaled: rename relaynode reference in defaults file comment 5 years ago
tailscaled.go wgengine/router: move DNS cleanup into the DNS package. 4 years ago
tailscaled.service cmd/tailscaled/tailscaled.service: revert recent hardening for now 4 years ago
tailscaled_notwindows.go Revert "cmd/tailscaled: split package main into main shim + package" 4 years ago
tailscaled_windows.go wgengine: make Tun optional again, default to fake. 4 years ago