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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Until we depend on Go 1.16 (which isn't released yet), alias our own
variable to the private member of the net package. This will allow an
easy find replace to make this go away when we eventually switch to
1.16.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Some users report seeing lines like:
> Routine: receive incoming IPv4 - stopped
Popping up unexpectedly. Let's sleep and try again before failing, and
also log the error, and perhaps we'll eventually understand this
situation better in future versions.
Because we have to distinguish between the socket being closed
explicitly and whatever error this is, we bump the module to require Go
1.16.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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If Close is called after ReceiveIPvX, then ReceiveIPvX will block on an
invalid or potentially reused fd.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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SO_REUSEADDR does not make sense for unicast UDP sockets.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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The sticky socket code stays in the device package for now,
as it reaches deeply into the peer list.
This is the first step in an effort to split some code out of
the very busy device package.
Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
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