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The concrete type under the interface is known here since we create the
connection in the same function. Since *net.UDPConn implements
net.PacketConn anyway, returning the concrete type here is more powerful
and less risky than having downstream users cast the value themselves
There should be no code change for downstream users, with the exception
of explicit casts (`udpc := conn.(*net.UDPConn)`), which can simply be
removed
Signed-off-by: Anatole Denis <natolumin@unverle.fr>
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Added a bind to interface functionality.
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Clients without an IP set their source address to 0.0.0.0, so the peer
returned by ReadFrom may not actually be the address to send to.
Clients without an IP should have their response broadcast.
Signed-off-by: Chris Koch <chrisko@google.com>
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Now the CI will also run golangci-lint
Signed-off-by: Andrea Barberio <insomniac@slackware.it>
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Why did I ever think this would work??
Signed-off-by: Christopher Koch <chrisko@google.com>
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Server6 and Server4 had Serve methods that return without reporting an
error, changed in this PR.
Serve now also closes the connection when done.
Signed-off-by: Andrea Barberio <insomniac@slackware.it>
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- Able to send UDP packets before interface is configured.
- Able to use any net.PacketConn.
- RFC2131-compliant retransmission logic.
- Tests.
- Race-condition-averse.
Previous clients (both mine and the ones here) are prone to race
condition errors.
Having one and only one place that calls receive on the socket
"continuously" without having to coordinate hand-offs makes the logic
way easier to follow, and allows for multiple requests in flux at a
time.
Signed-off-by: Christopher Koch <chrisko@google.com>
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